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Luftfahrtgeschichte: Bibliography of Aeronautics 1920-1921 von Paul Brockett

» Übersicht zur Literatur der Luftfahrtgeschichte

Bibliography of Aeronautics
Die umfangreiche und international angelegte Bibliographie zur Luftfahrtgeschichte, die unter dem Titel "Bibliography of Aeronautics" vom US-amerikanischen Autor Paul Brockett verfaßt und über die Smithsonian Institution ("Smithsonian") herausgegeben bzw. über die Smithsonian Institution Libraries veröffentlicht wurde, umfaßt im vierten Band eine Bestandsaufnahme der internationalen Luftfahrtliteratur im Zeitraum von 1920 bis 1921.

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BIBLIOGRAPHY OF AERONAUTICS

1920-1921

By PAUL BROCKETT Smithsonian Institution

in

INTRODUCTION.

This work covers the literature published from January 1, 1920, to December 31, 1921, and continues the work of the Smithsonian Institution issued as Volume 55 of the Smithsonian Miscellaneous Collections, which covered the material published prior to June 30, 1909, and the work of the National Advisory Committee for Aeronautics as published in the Bibliography of Aeronautics for the years 1909 to 1916 and 1917 to 1919,.

As in the Smithsonian volume and in the Bibliography of Aeronautics for the years 1909 to 1916 and 1917 to 1919, citations of the publications of all nations have been included in the languages in which these publications originally appeared. The arrangement is in dictionary form with author and subject entry and one alphabetical arrangement. Detail iti the matter of subject reference has been omitted on account of the cost of presentation, but an attempt has been made to give sufficient cross reference for research in special lines.

The National Advisory Committee for Aeronautics will next present a bibliography for the year 1922.

Joseph S. Ames, Chairman Executive Committee National Advisory Committee for Aeronautics.

December 9, 1924.

v

ABBREVIATIONS.

Aer. Eng. Suppl. The Aeroplane...........The Aeroplane- . . . Aeronautical Engineering Supplement to The Aeroplane, London.

Aeron. Journ..............................Aeronautical Journal, London.

Amer. Mach..............................American Machinist, New York.

Amer. Gas Eng. Journ....................American Gas Engineering Journal, New-York.

Aut. Eng.................................Automotive Engineering, New York.

Ann. Soc. Met. France....................Annuaire, Société Météorologique de

France, Paris.

Automobile-Automotive Ind...............The Automobile and Automotive Industries, New York.

Aviat. Aer. Eng..........................Aviation and Aeronautical Engineering,

New York.

Bull. Aero-Club Suisse....................Bulletin, Aero Club Suisse, Berne.

Bull. Exper. Depart. Airplane Eng. Div____The Bulletin of the Experimental Department, Airplane Engineering Division, U. S. A., Dayton, Ohio.

Bull. Soc. Enc. Ind. Nat...................Bulletin de la Société d'Encouragement

pour l'Industrie Nationale, Paris.

Deutsche Luftf. Zeitschr...................Deutsche Luftfahrer Zeitschrift, Berlin.

Electr. Railw. Journ......................Electric Railway Journal, New York.

Journ. Amer. Soc. Mech. Eng..............Journal of the American Society of Mechanical Engineers, New York.

Journ. Amer. Water Works Ass'n...........Journal of the American Water Works

Association, Baltimore.

Journ. Inst. Electrical Engineers...........Journal of the Institute of Electrical Engineers, New York.

Journ. Frankl. Inst.......................Journal of the Franklin Institute, Philadelphia.

Journ. Mil. Serv. Inst......................Journal of the Military Service Institution, Governors Island, New York.

Journ. Roy. Soc. Arts.......................Journal of the Royal Society of Arts,

London.

Journ. Soc. Automotive Engineers.........Journal of the Society of Automotive

Engineers, New York.

Journ. United States Art...................Journal of the United States Artillery;

Fortress Monroe, Va.

La Conq. l'Air.............................La Conquête de l'Air, Brussels.

Pop. Mech...............................Popular Mechanics, Chicago.

Pop. Sei. Monthly.........................Popular Science Monthly, New York.

Proc. Amer. Inst. Electr. Eng.............Proceedings of the American Society of

Electrical Engineers, New York.

Quart. Journ. Roy. Met. Soc..............Quarterly Journal of the Royal Meteorological Society, London.

Rev. Gen. Seien..........................Revue General Scientifique, Paris.

vn

vm

ABBREVIATIONS.

Riv. Ital. Aeron....................

Scient. Amer........................

Scient. Amer. Monthly...............

Scient. Amer. Suppl................

Techn. Berichte....................

Tech. Rept. Advis. Com. Aeronautics

Zeitschr. Flugt. Motorluftsch........

Zeit. Österr. Ing. Arch. Ver..........

Rivista Italiana Aeronautica. Scientific American, New York. . Scientific American Monthly, New York. Scientific American Supplement, New York.

Technische Berichte, Charlottenburg.

Technical Report of the Advisory Committee on Aeronautics, London.

Zeitschrift für Flugtechnik und Motorluftschiffahrt, Berlin.

.Wien.

BIBLIOGRAPHY OF AERONAUTICS 1920-1921, INCLUSIVE

By Paul Brockett

A.

A. B. C. A. B. C. aero engines.

Aeronautics, Vol. 18, No. 330 (Feb. 12,1920), London, p. 144, ill.

- A. B. C. engine data.

Aeronautics, Vol. 18. No. 377 (Apr. 1, 1920). London, p. 279, ill.

"A Merchant." The stresses in the undercarriage of an aeroplane. Flight, Vol. 12, No. 15 (Apr. 8, 1920), London, pp. 398-399.

Abeelen. Naar aanleiding van de waterstaatsbegrooting.

Vliegveld, 5. jaarg., No. 23 (5 nov. 1921), Amsterdam, pp. 310-312.

Abel, Georg. Die ärztlichen Sicherheitsmassnahmen beim Personenluftverkehr. Luftweg, Jahrg. 4, Hefte. 46-47 (2. Dez. 1920), Berlin, pp. 5-6.

Abell, C. F. Airship engines.

Automotive Industries, Vol. 42 (Apr. 15, 1920), New York, p. 901.

—— Airship machinery, past experience and future requirements. Aeron. Journ., Vol. 24, No. 113 (May 1920), London, pp. 250-26S.

Aeronautics, Vol. 18, Nos. 335-337 (Mar. 18-Apr. 1,1920), London, pp. 244, 260-261, 273-275. . Flight, Vol. 12, No. 13 (Mar. 25,1920), London, pp. 352-353.

Aberdeen. See Bombing: Bombing at Aberdeen.

Acampora, Lxjigi. The study of a steam turbine for airplanes.

Aviation, Vol. 9, No. 8 (Nov. 8,1920), New York, pp. 261-262.

Accelerations. See Searle, G. F. C, and F. A. Lindemann: Preliminary report ou measurements of accelerations on aeroplanes in flight.

Accelerometer. Notes on the theory of the accelerometer.

Aeronautics, Vol. 19, No. 355 (Aug. 5, 1920), London, p. 120. National Advisory Committee for Aeronautics.

- The theory of the accelerometer.

Journ. Soc. Aut. Eng., Vol. 7, No. 2 (Aug. 1920), New York, p. 189.

-— See Norton, Frederick Harwood, and Edward P. Warner: Accelerometer design.

- See Warner, Edward P.: Notes on the theory of the accelerometer.

Accessories. Aero accessories at Olympia.

Flight, Vol. 12, No. 29 (July 15, 1920), London, pp. 771-779, ‘11.

Accidents. Accidents.

Report of the Aeronautical Research Committee for the year 1920-21, H. M. Stationery Office, Cmd. 1458, London, 1921, 51-52.

- Accidents by air and .rail.

Aeronautics, Vol. 19, No. 364 (Oct. 7, 1920), London, pp. 249-250.

-—■ Accidents in commercial aviation.

Aerial Age, Vol. 14, No. 8 (Oct. 31,1921), New York, pp. 175-176.

Accidents. Aerial stunts and public safety.

Scient. Amer., Vol. 123 (Sept. 18, 1920), New York, p. 272.

- An analysis of aircraft accidents.

Aviation, Vol. 11, No. 13 (Sept. 26, 1921), New York, pp. 371-372.

- Aviation becoming safer.

Automotive Industries, Vol. 42 (Feb. 5, 1920), Now York, pp. 412-413.

- Casualties in the air service.

The Aeroplane, Vol. 18, No. 1 (Jan. 7, 1920), London, p. 16.

- Catástrofe aérea en el Perú.

Tohtli, año 5, Núm. 3 (oct. 1920), México, p. 134.

- The cause of some unexplained accidents.

Tñe Aeroplane, Vol. 18, No. 25 (June 23,1920), London, pp. 1202,1204.

- Desastre aéreo en Inglaterra.

Tohtli, año 5, Num. 4 (nov.-dic. 1920), México, p. 217

- Mortality statistics of the air.

Automotive Industries, Vol. 42 (Jan. 15, 1920), New York, pp. 190-191.

- To render travel safe by air.

Scient. Amer., Vol. 123 (Sept. 25, 1920), New York, p. 290.

- A table of accidents.

Aeronautics, Vol. 20, n. s., No. 393 (Apr. 28,1921), London, p. 291.

- Three fatal accidents.

The Aeroplane, Vol. 20, No. 10 (Apr. 20, 1921), London, p. 367.

- Die Ursache des Bitterfelder Ballonunglücks.

111. Flug-Woche, 3. Jahrg., 20. Heft (28. Sept. 1921), Leipzig, pp. 409-410.

- Les victimes de la double catastrophe du 7 septembre 1920.

Suisse Aérienne, 2" année, No. 20 (30 oct. 1920), Berne, pp. 305, ill.

- See Imbrecq, J.: Jurisprudence. Accidents et compagnies d'assurances.

- See Saladin, Raymond: La catastrophe du Grand-Montrouge.

- -See Wild. R. K. Bagnall: Safety in flight.

- See Verneuil: L'auto inflammation ....

Acbland, P. D. Aircraft in the east.

Flight, No. 631, Vol. 13, No. 4 (Jan. 27, 1921), London, p. 63.

- Communications in the east. Their expansion by means of aircraft.

Aeronautics, Vol. 20, n. s., No. 380 (Jan. 27, 1921), London, p. 66.

- Trans-Continental flying.

Aeron. Journ., Vol. 24, No. 114 (June 1920), London, pp. 273-293.

Aeronautics, Vol. 18, Nos. 340-341 (Apr. 22-29, 1920), London, pp. 326-329, 342-344.

Flight, Vol. 12, No. 16 (Apr. 15,1920), London, pp. 425-426.

Acetylene. See Flying boats: Acetylene-welded flying boat carries 10 tons.

\costa. See Pulitzer race: The second annual Pulitzer race at Omaha. Won Acosta on the Curtiss-Navy racer.

Acrobatics. L'acrobatie aérienne.

Suisse Aérienne, 2e année, No. 17 (10 sept. 1920), Berne, pp. 250-251.

Addems. The Addems compressed-air model.

Aerial Age, Vol. 13,fNo. 13 (June 6, 1921), New York, p. 305, ill.

Adler, E. E. Routine operations on judgment day.

U. S. Air Service, Vol. 3, No. 3 (Apr. 1920), New York, pp. 17-19, 25, ill.

Adriatic. Airplane communication services in the Adriatic.

Automotive Manufacturer, Vol. 62, No. 1 (Apr. 1920), New York, p. 16.

- SeeK., B.D.: Aviation in the lower Adriatic. August, 1916, to October, 1917.

Advertising. How it will pay to advertise in the air.

Naviator, Vol. 1, No. 37 (Dec. 4, 1920), Pensacola, Fla., p. 2.

- The possibilities of aerial advertising.

Naviator, Vol. 1, No. 5 (Mar. 13,1920), Pensacola, Fla., p. 5.

- See Updegraff, R. R.: Airplane and advertising of the future.

Advisory Committee for Aeronautics.

Flight, Vol. 12, No. 17 (Apr. 22,1920), London, pp. 439-442.

—— Advisory Committee report for 1919-20.

Aeronautics, Vol. 18, No. 341 (Apr. 29, 1920), London, p. 348. Flight, No. 634, Vol. 13, No. 7 (Feb. 17,1921), London, p. 116.

- Aeronautics. Technical report of the Advisory Committee for Aeronautics for

the year 1915-16 (with appendices).

London, H. M. Stationery Office, 1920, pp. 610, ill., diagrs.

The appendices, 93 in number, include papers on aerodynamics, models, wings, parts, stability, propellers, design, construction, engines, seaplanes, fabrics, dopes, varnishes, instruments, etc.

- The final report of the National Advisory Committee.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 7 (Feb. 16, 1921), London, pp. 157-158.

- The Report of the Advisory Committee for Aeronautics.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 18 (May 5, 1920), London, p. 908.

- Report of Advisory Committee for Aeronautics for the year 1919-20.

Aeronautics, Vol. 20, n. s., No. 383 (Feb. 17, 1921), London, pp. 110-112,135-136, 169-170, 188189, 207-209, 240.

- Technical report of the Advisory Committee for Aeronautics for the year 1916-17

(with appendices). Vol. I.

London, H. M. Stationery Office, 1920, pp. x, 371, ill., diagrs.

The appendices, 43 in number, include papers on aerodynamics, experiments on models of aeroplanes, bodies and controls, parts, struts, wires, stability, and airscrews.

—— Technical report of the Advisory Committee for Aeronautics for the year 1916-17 (with appendices). Vol. II.

London, H. M. Stationery Office, 1920, pp. i-ix, 372-771, ill., diagr.

The appendices, 49 in number, include papers on aeroplane design, engines, radiators, magnetos, construction, seaplane floats, fabrics, dopes, varnishes, hydrogen, instruments, and meteorology.

- Technical Report of the Advisory Committee for Aeronautics for the year

1917-18 (with appendices). Vol. I. General questions, airships and model aeroplane research.

London, H. M. Stationery Office, 1921, pp. xiv, 276, [xvl-xiii, 111., diagrs. Includes 39 technical reports and memoranda dealing with aerodynamics, wind channels, models, wings, tests on biplanes and triplanes, aeroplane bodies, fins, rudders, struts, and parts.

- Technical Report of the Advisory Committee for Aeronautics for the year

1917-18 (with appendices). Vol. II. Airscrews and full scale work on aeroplanes.

London, H. M. Stationery Office, 1921, pp. xiv, 277-762, [xv]-xxiii, ill., diagrs. Includes 43 technical reports and memoranda dealing with airscews, bodies, engine gearing, shafts, helicopters, aeroplanes, etc.

- Technical Report of the Advisory Committee for Aeronautics for 1917-18.

Vol. III. Strength of construction.

London, H. M. Stationery Office, 1921, pp. xiv, 763-1191, xv-xl, ill.

This volume consists of 50 technical reports and memoranda dealing with seaplanes, fabrics, and instruments. The main subdivisions are: Strength of construction—(1) the stresses in loaded aeroplane structures; (2) the use of soap films for stress computation; (3) experiments on timber: Seaplane floats and flying-boat hulls, aeroplane fabrics, aluminum alloy sheet for aeroplane wings, permeability of fabrics and dopes to hydrogen, meteorology, etc.

Advisory Committee for Aeronautics. See Glazebrook, Richard T.: Some points of importance in the work of the Advisory Committee for Aeronautics.

- See Subsidies: Civil aviation subsidies. Recommendation of the Advisory

Committee.

Advisory Committee on Civil Aviation. Government assistance for the development of civil aviation.

Flight, Vol. 12, No. 27 (July 1, 1920), London, pp. 685-690.

Aerial cruiser.

Scient. Amer., Vol. 123 (Oct. 16, 1920), New York, p. 400, ill.

Aerial derby. Aerial derby.

Aeronautics, Vol. 19, Nos. 353-354 (July 22-July 29, 1920), London, pp. 68-69, 95, map.

- Around the world aerial derby.

Illustrated World, Vol. 33 (June 1920), Chicago, pp. 679-680, map.

- Blaze air course round the world. Nations all aid commission circling globe

to prepare route for the first aerial derby.

Naviator, Vol. 1, No. 21 (July 10,1920), Pensacola, Fia., pp. 1, 4, 8.

■- Committee organizing first aerial derby around the world receive cordial reception in France.

Aerial Age, Vol. 11, No. 14 (June 14, 1920), New York, pp. 469-470.

- Le derby aérien autour du monde.

Suisse Aérienne, 2e année, Nos. 9-10, (mai 1920), Berne, pp. 138-142. ill. t

- First aerial derby around the world.

Bulletin, Pan American Union, Vol. 50 (May 1920), Washington, D. C, pp. 532-541.

- Rout mapped for long aerial derby.

Naviator, Vol. 1, No. 25 (Aug. 7, 1920), Pensacola, Fia., p. 1.

- Special commission organizing the first aerial derby around the world under

the rules of the Federation Aéronautique Internationale.

Bulletins 1-10, [each published in different country], 1919-1920, paged separately.

World aerial derby plans progressing.

Flying, Vol. 9, No. 12 (Jan. 1921), New York, p. 729.

- World welcomes commission organizing first aerial derby around the world.

Flying, Vol. 9, No. 12 (Jan. 1921), New York, pp. 732-734; Vol. 10, Nos. 1-4 (Feb.-May) pp. 28-30, 67-69, 107-109, 116, 147-149.

Aerial League of America. The Aerial League of America's stupendous campaign to popularize aeronautics, establish airports, and extend the aerial mail service by organizing a unit in every community, university, and organization.

Aerial Age, Vol. 12, No. 5 (Oct. 11, 1920), New York, pp. 143-146.

Flying, Vol. 9, No. 9 (Oct. 1920), New York, pp. 569-571.

- 55,000 contest for designs for aeroplanes capable of carrying twenty, fifty, one

hundred, one hundred and fifty, and two hundred tons of useful load planned by the Aerial League of America.

Aerial Age, Vol. 12, Nos. 4-5 (Oct. 4-11,1920), New York, pp. 101-102, 121, 133.

- $1,000 "Aviette" challenge trophy offered by Aerial League of America to

popularize new sport.

Aerial Age, Vol. 11, No. 10 (May 17, 1920), New York, p. 325.

Aerial League of the World. Aerial League of the World organized. Aerial Age, Vol. 11, No. 24 (Aug. 23,1920), New York, pp. 797, 810. Flying, Vol. 9, No. 8 (Sept. 1920), New York, pp. 528-529.

Aerial League of the world. Aerial League of the World. Bulletin, No. 1- , Aug. 13,1920-No. 1 autographed typewritten copy.

- World-wide league to promote flying.

Literary Digest, Vol. 67 (Oct. 9,1920), New York, p. 82.

Aerial patrol. Capturing bandits on the wing.

Illustrated World, Vol. 34 (Dec. 1920), Chicago, p. 625, ill.

- La police aérienne en Amérique.

La Conq. l'air, 3" année, No. 4 (15 fevr. 1920), Bruxelles, pp. 46, ill.

Aerial routes. America's first model airway map.

Journ. Soc. Aut. Eng., Vol. 8, No. 4 (Apr. 1921), New York, p. 330.

- Les transports aériens entre Paris et Londres.

Génie Civil, T. 76, (26 juin 1920), Paris, pp. 577-578.

Aerial transport. The state of aerial transport.

Aeronautics, Vol. 19, No. 374 (Dec. 16, 1920), London, pp. 427-428.

Aerial Transport Corporation. Air transport plans complete.

Naviator, Vol. 1, No. 22 (July 17,1920), Pensacola, Eia., p. 1.

Aerial year book. Aerial year book and who's who in the air, 1920. London, Cross Atlantic Newspaper Service, 1920, pp. 328.

Ae-2.01. The "Ae-2.01" chaser biplane.

Flight, No. 648, Vol. 13, No. 21 (May 26,1921), London, pp. 361-362, ill.

Aéro-Club de Belgique. Le XXe anniversaire de la Fondation de l'Aéro-Club de Belgique.

L'Aérophile, 29« année, Nos. 1-2 (l«-15jan. 1921), Paris, pp. 23-24.

Aero Club de France. The Aé. C. F. grand prix.

Flight, No. 629, Vol. 13, No. 2 (Jan. 13,1921), London, p. 29, map.

-- Bulletin officiel de l'aéro club de France

L'Aérophile, 28« année, Nos. 3/4, 5/6, (1«'-15 fév.-l«-15 mar., 1920) Paris, pp. 62-63, 84-93.

L'Aérophile, 29« année, Nos. 1-24 (l«r-15 jan.-l«-15 déc. 1921), Paris.

-- Fête aérostatique du 4 juin au Parc de l'Aé. C. F. Sous la présidence de M.

Laurent Eynac.

L'Aérophile, 29= année. Nos. 11-12 (1«'-15 juin 1921), Paris, pp. 180-182, ill.

- La fête de l'Aéro-Club.

Vie Aérienne, 5« année, No. 1 (5 août 1920), Paris, p. 11, ill.

-- La fête du 10 juillet au Parc de l'Aéro-Club.

L'Aérophile, 28« année, Nos. 13-14 (1«-15 juil. 1920), Paris, pp. 218-221, ‘11.

- Grand prix de l'Aéro-Club de France. [100,000 francs.]

L'Aérophile, 29« année, Nos. 1-12 (l«'-15jan.-l"-15 juin, 1921), Paris, pp. 21, 66,130,162-163, Aéronautique, 3« année, No. 26 (juil. 1921), Paris, pp. 274-275, ‘11.

Aero Club of America. A. C. A. members form committee to fight schemers' ruse to get control of club.

Aerial Age, Vol. 11, No. 22 (Aug. 9,1920), New York, pp. 733-734.

- Aero Club and Flying Club merge.

Aircraft Journal, Vol. 7, No. 8 (Aug. 23, 1920), New York, pp. 3-4.

- Court of Appeals and Federal decisions support contentions in A. C. A. case.

Aerial Age/Vol. 12, Nos. 5-6 (Oct. 11-18, 1920), New York, pp. 154-155, 166.

--Courts asked for injunction to help Aero Club maintain its national leadership.

Aerial Age, Vol. 11, No. 20 (July 26, 1920), New York, pp. 671-673, 688-689.

Flying, Vol. 9, No. 7-9, (Aug.-Oct. 1920), New York, pp. 452-463,512-522,534,582-589.

Aero Club of America. Evidence of conspiracy to destroy Aero Club of America submitted to the Supreme Court of New York.

Aerial Age, Vol. 11, No. 21 (Aug. 2, 1920), New York, pp. 703-705, 720.

- Evidence of vicious conspiracy to destroy Aero Club of America submitted to

the Supreme Court.

Aerial Age, Vol. 11, Nos. 22, 24-25 (Aug. 9, 23, 30,1920), New York, pp. 734-735,745-746, 751, 798-799, 817, 830-831, 842, 848-849.

- Purposes of irregular meeting of A. C. A., called for August 16, violate New York

State laws.

Aerial Age, Vol. 11, No. 23 (Aug. 16, 1920), New York, pp. 765-767, 784.

- "Uphold the law, foster aeronautic activities" keynote of meeting of the Aero

Club of America.

Aerial Age, Vol. 11, No. 26 (Sept. 6, 1920), New York, pp. 863-864, 871, 874.

--See Prizes: Applications for sanction made to A. C. A. for three aerial contests

with over $100,000 in prizes.

Aero-Club von Deutschland. Gesetze betr. die Luftfahrt. Bd. ii. Berlin, Gustav Braunbeck.

Reviewed in: Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 10 (31. Mai 1920), Berlin, p. 146.

Aero clubs. Active aero clubs.

Aviation, Vol. 10, No. 13 (Mar. 28, 1921), New York, pp. 404-405.

Aero 201. A new single-seater scout.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 14 (Apr. 6, 1921), London, p. 330, diagr.

Aerodrome. Aerodrome list amendments.

Aeronautics, Vol. 19, No. 360, 362 (Sept. 9, 23, 1920), London, pp. 203, 231.

- Les aérodromes de l'état pour l'aviation civile.

Aéronautique, 3» année, No. 22 (mars 1921), Paris, pp. 125-126.

- Aerodromes for civil use.

Aeronautics, Vol. 18, No. 328, 341 (Jan. 29, Apr. 29, 1920), London, pp. 105, 352; Vol. 19. No. 355 (Aug. 5, 1920), pp. 121-123.

- Flying clubs and municipal aerodromes.

Aeronautics, Vol. 19, No. 370 (Nov. 18, 1920), London, pp. 353-354.

- On safety, comfort, and economy—II.

The Aeroplane, Vol. 19, No. 8 (Aug. 25,1920), London, pp. 399-400.

- Radio marker for aerodromes.

Aviation, Vol. 7, No. 12 (Jan. 15,1920), New York, p. 530.

- See Gundry, P. G.: The effect of temperature and altitude of aerodrome in the

taking off of aeroplanes.

Aerodynamic balance. See Zahm, Albert Francis: Bifllar windbalance.

Aerodynamic stability. See Taylor, G. I.: The Wilbur Wright lecture. Scientific methods in aeronautics.

Aerodynamical laboratories. Aerotechnical institute of St. Cyr, new apparatus for testing mechanical conditions governing the flight of airplanes.

Scient. Amer. Monthly, Vol. 2 (Nov. 1920), New York, pp. 260-263, ill.

- The new aerodynamic laboratory at St. Cyr.

Aviation, Vol. 9, No. 4 (Sept. 15, 1920), New York, p. 120, ill.

Aerodynamics. Aerodynamische Eigenschaften dicker Profile.

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., 1920, pp. 315-317, 325-330, ill.

Aerodynamics. Aerodynamics.

Report of the Aeronautica Research Committee for the year 1920-21, H. M. Stationery Office Cmd. 1458, London, 1921, pp. 17-26.

- Experimental aerodynamic data.

Aerial Age, Vol. 13, No. 16 (June 27,1921), New York p. 374.

--New lifting element.

Scient. Amer. Monthly, Vol. 2 (Nov. 1920), New York, p. 285, diagr.

- Report of the committee on aerodynamics.

National Advisory Committee for Aeronautics 1920, Washington, 1921, pp. 22-28.

- See Alayrac: Un livre ....

- See Bairstow, Leonard: Applied aerodynamics.

- See Bothezat, Georges de: Sur le rendement d'un tunnel aérodynamique.

- See Caldwell, F. W., and E. N. Fales: Wind-tunnel studies in aerodynamic

phenomena at high speed.

- See Chassex, Louis: Vérification en vol des lois aérodynamiques.

- See Eiffel: Etudes sur l'aéronautique faites au laboratoire aérodynamique

Eiffel, de 1915 â 1918.

-• See Eiffel, G.: Résumé des principaux travaux exécutés pendant la guerre au

laboratoire aérodynamique Eiffel.

■-• See Fales, E. N.: Le tunnel de MacCook Field.

- See Gates, S. B.: The full scale determination of the pitching moment of a

biplane.

- See Goldenberg, V. : Les données expérimentales de l'aérodynamique.

- See Guidoni, A.: Aerodynamics at very high speed.

- See Levy, EL: Scale effects in relation to aerodynamics.

- See Mallock, A.: Eddies and the diffusion of momentum.

- See Margoulis, W.: L'Aérodynamique expérimentale en 1920.

- See Munk, Max Michael: The drag of Zeppelin airships.

- See Munk, Max Michael: The minimum induced drag of aerofoils.

- See Munk, Max Michael: Some new aerodynamical relations.

- See National Advisory Committee for Aeronautics: Aerodynamic characteristics of aerofoils.

- See Nayler, J. L., and R. A. Frazer: Vortex motion.

- See Norton, Frederick Harwood, and Edmund Turney Allen: Control in circling flight.

- See Norton, Frederick Harwood: Practical stability and controllability of airplanes.

- See Norton, Frederick Harwood: The pressure distribution over the horizontal

tail surfaces of an airplane.

- See Pannell, J. R.: Experiments on the resistance of spheres.

- See Pigeaud: Toegepaste aerodynamica.

- See Prandtl, L.: Standardization and aerodynamics.

Aerodynamics. See Rayleigh: On the suggested analogy between the conduction of heat and momentum during the turbulent motion of a fluid.

- See Reif, E. F., and C. H. Powell: Tests on smooth and stranded wires inclined

to the wind direction, and a comparison of results on stranded wires in air and water.

- See Robin, Ch.: L'avion-laboratoire.

- See St. Cyr: Aerotechnical Institute of St. Cyr.

,- See Taylor, G. I.: Observations and speculations on the nature of turbulen

motion.

—■— See Taylor, G. I.: Pressure distribution round a cylinder.

- See Thomson, G. P.: Applied aerodynamics.

—— See Toussaint, A.: Lea experiences aerodynamiques en vraie grandeur.

Aerodynamische Versuchsanstalt zu Göttingen. Ergebnisse ....

Noted in Zeitschr. Flugt. Motorluftsch, 12. Jahrg., 17. Holt. (15 Sept. 1921). München, p. 266.

Aerofoils. Absolute coefficients and the graphical representation of aerofoil characteristics.

Aerial Age, Vol. 13, No. 19 (July 18,1921), New York, pp. 441-443.

- Aerofoil development.

Aerial Age, Vol. 13, No. 6 (Apr. 18,1921), New York, p. 123.

- Properties of aerofoil sections.

Aerial Age, Vol. 13, No. 11 (May 23, 1921), New York, p. 246.

- The theory of aerofoils.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 20 (May 18,1921), London, p. 468.

- Report of wind tunnel test on U. S. A. aerofoils 25, 26, 27, 28, 29.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 49 (May 12,1920), Washington, Government Printing Office, pp. 19.

——- See Bothezat, George de: An introduction to the study of the laws of air resistance of aerofoils.

- See Clark: Two new Clark aerofoils.

- See Diehl, Walter S.: The variation of aerofoil lift and drag coefficients with

changes in size and speed.

- See Gerhardt, W. F.: The resistance of aerofoils.

- See Lachmann: The Lachmann aerofoil.

- See Münk, Max Michael: The minimum induced drag of aerofoils.

- See National Advisory Committee for Aeronautics: Aerodynamic characteristics of aerofoils—II.

- See Norton, Frederick Harwood: The aerodynamic properties of thick aerofoils

suitable for internal bracing.

- See Thorn, Alexander: The correction of aerofoil characteristics for scale effect.

- See Wragg: "Wragg" adjustable compound aerofoil.

Aerograjphy. See McAdie, Alexander: The principles of aerography. Aerology. See Ferguson, S. P.: New aerological apparatus.

- See Schools: Meteorology and aerology schools.

Aeromarine. The aeromarine air yacht.

Aeronautics, Vol. 19, No. 355 (Aug. 5, 1920), London, p. 115, ill.

•- Aeromarine airways show safe operation.

Aviation, Vol. 11, No. 22 (Nov. 28, 1921), New York, pp. 622-023, ill.

•- Aeromarine flying boat.

Aeronautics, Vol. 18, No. 332 (Feb. 26, 1920), London, p. 174, ill.

- Aeromarine flying boats at the New York Aero Show.

Flight, Vol. 12, No. 13 (Mar. 25, 1920), London, pp. 339-340, ill.

•- Aeromarine flying yacht is christened. Largest American type of seaplane for

commercial purposes makes maiden flight.

Aircraft Journal, Vol. 7, No. 1 (July 5,1920), New York, pp. 3-5, ill.

- An aeromarine limousine flying boat.

Flight, Vol. 12, No. 32 (Aug. 5, 1920), London, p. 865, ill.

- Aeromarine Model 40 hull test.

Aviation, Vol. 9, No. 4 (Sept. 15,1920), New York, pp. 115-118, ill., diagr.

- Aeromarine pioneering.

Aviation, Vol. 11, No. 14 (Oct. 3, 1921), New York, pp. 392-394.

■- An aeromarine record.

Aerial Age, Vol. 14, No. 1 (Sept. 12,1921), New York, p. 6.

- Test of aeromarine model 40 wing structure.

Aviation, Vol. 9, No. 9 (Nov. 15, 1920), New York, pp. 291-294, ill.

■- See Klemin, Alexander: Plant of the Aeromarine Plane and Motor Co.

- See Zimmermann, Paul G.: The Aeromarine Model 40 flying boat.

Aeromarine Plane and Motor Company. The log of an aeromarine; a modern adventure in pathflnding.

New York, The Schilling Press (Inc.), 1920, pp. 34, iU.

Aeronautical Chamber of Commerce of America. Organization.

Automotive Industries, Vol. 45, No. — (Dec. 29,1921), New York, p. 1296.

Aeronautical Digest. Official bulletin of the World's Board of Aeronautical Commissioners.

New York, Aeronautical Digest Publishing Corporation, Vol. 1, No. 1 (Oct. 1921), pp. [2]; No. 2 [Nov.], pp. 8.

From 192L-22 Official Bulletin of the World's Board of Aeronautical Commissioners.

Aeronautical directory of the world.

London, Pub.for the proprietorsbythe Aeroplane & General PublishingCo. (Ltd.), 1920--Aeronautical Research Committee. The effect of the lag of the downwash on the longitudinal stability of an aeroplane and on the rotary derivative Mq.

Reportsand Memoranda, No. 718 (Feb. 1921), London, His Majesty's Stationery Offices.

- Future of the Aeronautical Research Committee.

Flight, Vol. 12, No. 19 (May 6, 1920), London, p. 498.

- The internal-combustion turbine.

Engine Sub-Committee Reports, No. 54 (Sept. 1920), London.

- (M. 1). Report on aluminum alloy rivets.

Aeronautical Research Committee. Reports and memoranda, No. 731 (May 1921), London, H. M. Stationery Office.

- Note on the comparison of metals as aeroplane structural materials.

Aeronautical Research Committee, Reports and memoranda, No. 729 (Oct. 1920), London, H. M. Stationery Office.

- The report of the Aeronautical Research Committee.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 10 (Sept. 7, 1921), London, pp. 215-216 .

44430—25-2

Aeronautical Research Committee. Reports and memoranda:—691. TheWasp-Avro "Fireproof" installation.

London, H. M. Stationery Office, December, 1920, ill.

-- Reports and memoranda:—697. The attachment of wooden airscrew blades to

metal centers.

London, H. M. Stationery Office, September, 1920, ill.

- Reports and memoranda:—710. Summary of the present state of knowledge

with regard to stability and control of aeroplanes.

London, H. M. Stationery Office, December, 1920.

- Reports of the Aeronautical Research Committee for the year 1920-21.

H. M. Stationery Office, Cmd. 1450, London, 1921, pp. 52.

Supplements. Committee reports on: Aerodynamics, engines, meteorology, fire prevention, materials and chemistry, fabrics and dopes, accidents. Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 9 (Aug. 31, 1921), London, p. 198.

- See Great Britain: Advisory Committee reports.

Aeronautics. L'aéronautique au parlement.

L'Aéronautique, 2« année, no. 14 (juil. 1920), Paris, pp. 49-51.

- Making some progress in aeronautics.

Automotive Manufacturer, Vol. 62, No. 5 (Aug. 1920), New York, p. 22.

- The review of the year [1919].

Aeroplane, Vol. 18, Nos. 1-2 (Jan. 7-Jan. 14, 1920), London, pp. 4-6, 70-76.

- See Turner, C. C: L'aéronautique enchaînée.

AÉROPHiLE. Notre vingt-neuvième année.

L'Aérophile, 29« année, Nos. 1-2 (Î^-ISjan. 1921), Paris, p. 4.

Aeroplanes. Comparison of the flying qualities of single and twin engine aeroplanes.

Aerial Age, Vol. 12, No. 19 (Jan. 17, 1921), New York, p. 494.

-— Light aeroplanes built with veneer.

Aerial Age, Vol. 13, No. 19 (July 18,1921), New York, p. 449.

—<— On ten years of "The Aeroplane."

The Aeroplane, Vol. 20, No. 23 (June 8,1921), London, pp. 517-518.

- Report of the scale effect subcommittee on the relation between model tests

and the full-scale performance of aeroplanes.

Tech. Report Advisory Committee Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 535-575,ill.

Aerostatic pressure. See McAdie, A.: Gravity and aerostatic pressure on fast ships and airplanes.

Aerostation. Adelantos de la aerostación.

Aire, Mar y Tierra, año 2, Num. 14 (mayo 1920), Madrid, p. 273.

- See Ansermier, L.: L'Aérostation militaire à travers les âges.

Africa. Attempts to fly the length of Africa halted by ants.

Literary Digest, Vol. 65 (June 19, 1920), New York, pp. 99-102.

- Guide aérien de l'Afrique du Nord, publié sous la direction et avec le concours

du Sous-Secrétariat de l'Aéronautique et des Transports Aériens . . . Introduction de M. P.-E. Flandin.

Paris, Librairie Aéronatique, 1921, pp. 100, ill.

- Lineas aéreas en África.

Aire, Mar y Tierra, año 2, Num. 19 (oct. 1920), Madrid, p. 596.

- La ruta aérea transafricana: el itinerario de El Cairo al cabo de Buena Esperanza.

Aire, Mar y Tierra, año 2, Num. 10 (enero 1920), Madrid p, 32.

Africa. Trans-African flight attempts reveal aviation handicaps.

Automotive Industries, Vol. 42 (Apr. 1, 1920), Now York, pp. 822-823.

--See Avions: L'emploi des avions en Afrique pour les recherches d'ordre scientifique.

- See Effendi: East African aeroplane work.

-- See Engines: High-compression engines and the African air lines.

- See "Tail-skid": South African flying.

- See Turner, C. C: Les voyages aériens le Caire-le Cap; deux cas de sabotage.

- See Walmsley, Leo: Flying and sport in East Africa.

Agnew, P. G. See Dickinson, Hobert Cutter, F. B. Silsbee, and Agnew: Methods for testing spark plugs.

Agriculture. Bee farmer uses airplane.

Scient. Amer., Vol. 121 (Dec. 27, 1919) New York, p. 639.

- Farmers to solve H. C. L. by aviation.

Aerial Age, Vol. 12, No. 12 (Nov. 29, 1920), New York, p. 321.

- Raiding outlaw cotton fields by airplane.

Literary Digest, Vol. 63 (Dec. 20,1919), New York, p. 28, ill.

- See Taylor, Bennett Ross: Agricultural possibilities of aviation fields.

Ahlborn, Fr. Der Segelflug.

München, R. Oldenbourg, 1921, Heft 5 der Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt.

Reviewed in: Zeitcshr. Flugt. Motorluftsch., 12. Jahrg., 21. Heft (15. Nov. 1921), München, pp. 320-321.

- Zur Methode des Segelfluges.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 23. Heft (15. Dez. 1921), München, pp. 337-338.

Aichi, Keiichi. On the distribution of the wind velocity when the abnormal propagation of sound occurs.

Physieo-mathematical Society of Japan, Proceedings, Vol. 2,1920, pp. 63-69.

Ailerons. See Irving, H. B.: Design of aeroplane control surfaces with special references to wing ailerons.

Aimé, Emmanuel. Aviateurs contemporains. Laurent Eynac et Pierre-Étienne Flandin.

L'Aérophile, 29» année, Nos. 23-24 (1«-15 dec. 1921), Paris, pp. 353-354, ports.

L'Air. L'Aéronautique française en 1921. Paris, [1921], pp. [1061.

Air. Air Rodeo at Daugherty Field.

The Ace, Vol. 3, No. 2 (Nov. 1921), Los Angeles, pp. 3-4.

- See Jacquerod, M. A.: Recherches négatives sur un nouveau constituant de

l'air atmosphérique.

Air Board. See Canada.

Air code. National Bank of Commerce favors air code.

Aviation, Vol. 11, No. 21 (Nov. 21,1921), New York, p. 600.

Air Conference. The Air Conference.

Aerial Age, Vol. 14, No. 15 (Dec. 19, 1921), New York, p. 352.

- Air Conference, 1920.

Aeronautics, Vol. 19, No. 362 (Sept. 23, 1920), London, p. 223.

Flight, Vol. 12, Nos. 39, 42 (Sept. 23, Oct. 14, 1920), London, pp. 1012, 1074-10S8, ill.

Air Conference. Air Conference, Oct. 12-15.

Engineer, Vol. 130 (Oct. 15-29,1920), London, pp. 372, 406-408, 431-433. Engineering, Vol. 110 (Oct. 15-22,1920), London, pp. 512-515,528-532.

- The Air Conference. The operation of civil aircraft.

Aeronautics, Vol. 19, No. 366 (Oct. 21,1920), London, pp. 284-285, 290-292.

•- The forthcoming Air Conference.

Flight, No. 676, Vol. 13, No. 49 (Dec. 8,1921), London, p. 814.

- The next Air Conference.

The Aeroplane, Vol. 21, No. 23 (Dec. 7,1921), London, pp. 559-560.

- Proceedings of the Air Conference, 1920, with appendices . . .

London, Printed and pub. by H. M. Stationery Office, 1920, pp. 144, tabl., charts. Great Britain, Parliamentary Papers by Command, Cmd. 1157.

- See An ex-pilot: Post impressions of the Air Conference.

- See Civil aviation: The Air Conference. The operation of civil aircraft.

- See Insurance: Aircraft insurance and the Air Conference.

- See S., W. H.: Technical matters at the Air Conference, 1920.

- See Service aviation: The Air Conference. Aspects of service aviation.

•- See Waddon: The Air Conference visit to Waddon.

Air defense. Senators urge nation to save millions by increasing air defense over sea. Aviation, Vol. 11, No. 8 (Aug. 22,1921), New York, pp. 223-224.

Air drive. See Propellers: Air drive for motor cars.

Air estimates. The air estimates discussion.

Flight, No. 637, Vol. 13, No. 10 (Mar. 10,1921), London, pp. 163-164.

- Air estimates for 1921.

The Aeroplane, Vol. 20, No. 1 (Jan. 5,1921), London, p. 21.

• •- The air estimates, 1921-22.

The Aeroplane, Vol. 20, No. 9 (Mar. 2,1921), London, p. 202.

Flight, No. 636-637, Vol. 13, No. 9,10 (Mar. 3,10,1921), London, pp. 149, 176-178.

■- The air estimates, 1921-22.—II.

Aeroplane, Vol. 20, No. 10 (Mar. 9,1921), London, pp. 222-227, 246-250, 272.

- On the air estimates.

The Aeroplane, Vol. 20, No. 17 (Apr. 27, 1921), London, pp. 385-390.

Air force. Auxiliary aids to the air force.

The Aeroplane, Vol. 21, No. 20 (Nov. 16,1921), London, pp. 457-461.

- United air force—pro and con.

Aviation, Vol. 10, No. 7 (Feb. 14,1921), New York, pp. 196-198.

- See Dryden, H. L.: Air forces on circular cylinders, axes normal to the wind,

with special reference to dynamical similarity.

Air liner. See JL-6: The log of an aluminum air liner in first passenger flight, New York to Chicago; the JL-6 German metal monoplane beats the Twentieth Century Limited by 12 hours.

Air lines. Air lines of to-day. Time-tables of the various services.

Flight, No. 662, Vol. 13, No. 35 (Sept. 1, 1921), London, pp. 585-587, map.

Air mail service. United States air mail service. Pilots' directions New York-San Francisco route. Distances, landmarks, compass course, emergency and regular landing fields, with service and communication facilities at principal points on route.

Post Office Department. Washington, Government Printing Office, 1921, pp. 70.

Air mail service. See Mail: Air mail service.

Air Ministry. Air Ministry acquire short "Silver Streak."

Flight, No. 635, Vol. 13, No. 8 (Feb. 24, 1921), London, p. 127, ill.

- The Air Ministry and Government control of aviation.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 8 (Feb. 23, 1921), London, pp. 181-184.

- The Air Ministry and the airship schemes.

The Aeroplane, Vol. 21, No. 4 (July 27, 1921), London, pp. 70-71.

——■ The Air Ministry appropriation account, 1919-20.

The Aeroplane, Vol. 20, No. 16 (Apr. 20, 1921), London, p. 367.

- The Air Ministry competition at Martlesham. A brief log of the progress made.

Flight, Vol. 12, No. 34 (Aug. 19,1920), London, p. 910.

- The Air Ministry competition at Martlesham. Several tests still to be made by

large machines.

Flight, Vol. 12, No. 35 (Aug. 26, 1920), London, p. 930.

- The Air Ministry competition at Martlesham. Some notes on the machines

entered.

Flight, Vol. 12, No. 32 (Aug. 5, 1020), London, pp. 855-861, ill.

- Air Ministry competition, 1920. Memories of 1912.

Aeronautics, Vol. 19, No. 355 (Aug. 5, 1920), London, pp. 111-113, map.

- Air Ministry competition, 1920. Table of data regarding amphibians, arranged

alphabetically.

Aeronautics, Vol. 19, No. 365 (Oct. 14, 1920), London, p. 278.

—— The Air Ministry competition results.

The Aeroplane, Vol. 19, No. 14 (Oct. 6, 1920), London, p. 626.

- Air Ministry competitions, 1920.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 17 (Apr. 28, 1920), London, pp. 859-866; Vol. 19, No. 11,15 (Sept. 15, Oct. 13,1920), London, pp. 520, 644. Aeronautics, Vol. 19, No. 353, 360 (July, Sept. 9,1920), London, pp, 83-84, 202. Aeroplane, Vol. 19, No. 8 (Aug. 25,1920), London, pp. 400-403.

Flight, Vol. 12, No. 17, 30 (Apr. 22, July 22,1920), London, pp. 445-446; Vol. 13, No. 2 (Jan. 13, 1921), pp. 25, 819-821, diagr.

■- Air Ministry competitions, 1920. Table of data regarding the large and small

aeroplanes, arranged alphabetically in each class.

Aeronautics, Vol. 19, No. 360 (Sept. 9, 1920), London, p. 202.

Flight, Vol. 12, Nos. 37, 41 (Sept. 9, Oct. 7, 1920), London, pp. 971, 1060.

- Air Ministry competitions, 1920. The official list of awards.

Flight, Vol. 12, No. 41 (Oct. 7,1920), London, p. 1054.

■-• Air Ministry conference.

Aeronautics, Vol. 20, n. s., No. 387 (Mar. 17, 1921), London, p. 179.

—— The Air Ministry exhibits.

Flight, Vol. 12, No. 29 (July 15,1920), London, pp. 707-769, ill.

- Air Ministry expenditures.

Flight, No. 643, Vol. 13, No. 16 (Apr. 21, 1921), London, pp. 268, 270.

- Air Ministry notice to ground engineers.

Aer. Eng. Suppl. The Aoroplane, Vol. 20, No. 1 (Jan. 5,1921), London, p. 14.

- Air Ministry notices.

Aeronautics, Vol. 20, n. s., Nos. 378-402 (Jan. 13-Juno 30, 1921), London, pp. 34-35, 51-52, 172-174, 192, 211-212, 2G7, 287, 327, 367, 458-160, 483-481; Vol. 21, Nos. 404, 40.5 (July 14, 21) pp. 34, 54-55.

Flight, Nos. 628,641,643, Vol. 13, Nos. 1,11,16 (Jan. 6, Apr. 7,21,1921), London, pp. 8,219, 278.

Air Ministry. The Air Ministry seaplane (amphibian) competition.

Flight, Vol. 12, Nos. 36-42 (Sept. 2-Oct. 14, 1920), London, pp. 947-950, ill., 972-975, 1000, 1013-1021, 1041, 1073.

- Air Ministry subsidies for civil aviation.

Flight, No. 629, Vol. 13, No. 2 (Jan. 13,1921), London, p. 22.

- Air Ministry tests of new machines.

Flight, Vol. 12, No. 3 (Jan. 15,1920), London, p. 71.

- The cross-channel air services. Subsidy revised and extended.

Flight, No. 652, Vol. 13, No. 25 (June 23,1921), London, p. 419.

•- The future of the Air Ministry.

Aeronautics, Vol. 20, n. s., No. 383 (Feb. 17,1921), London, p. 107.

■- Meteorological Office, Air Ministry. Advisory Committee on Atmospheric Pollution. Report on observations in the year ending Mar. 31, 1921. Forming the seventh report of the committee for the investigation of atmospheric pollution. London, His Majesty's Stationery Office, 1922, M. O. 249, pp. 31, diagrs.

- The new régime at the Air Ministry.

Flight, No. 641, Vol. 13, No. 14 (Apr. 7,1921), London, pp. 235-236.

- The official report on the Air Ministry competitions, 1920.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 3 (Jan. 19,1921), London, pp. 59-60.

■- On the "Times" and the Air Ministry.

The Aeroplane, Vol. 20, No. 15 (Apr. 13,1921), London, pp. 341-344.

- Report on Air Ministry competitions, 1920.

Aeronautics, Vol. 20, n. s., No. 378 (Jan. 13,1921), London, p. 23.

■- The subsidy regulations.

Flight, No. 652, Vol. 13, No. 25 (June 23,1921), London, pp. 415-416.

- See Air conference: The forthcoming air conference.

■- See Great Britain: British Ministry announces plan for airship development.

•- See Great Britain: Progress of civil aviation.

■- See Richardson, Lewis F.: Cracker balloons for signaling temperature.

- See Richardson, Lewis F.: Lizard balloons for signaling; the ratio of pressure

to temperature.

•- See Safety tank: The Air Ministry safety tank competition.

Air navigation. Air navigation directions—1. Air navigation acts, 1911-1919.

Aeronautics, Vol. 20, n. s., Nos. 398-400 (June 2-16, 1921), London, pp. 402, 422-423, 442-444.

Air ordinances. See Laws and regulations.

Air resistance. See Jacob, L.: La résistance de l'air et l'expérience. Les conséquences.

Air routes. From New York to Nome and Siberia by air.

Literary Digest, Vol. 66 (Sept. 11, 1920), New York, pp. 92-96.

- See Commercial aeronautics.

•- See Commercial aeronautics: Mapping air-routes for commercial flying.

- See Hicks, C: Empire building by air: Cairo to the Cape.

- See Lighthouses: La balisage lumineux des routes aériennes pour la navigation

nocturne.

- See Winters, S. R.: America's first model airway.

Aih Service. Air Service, air force, and air power.

Aviation, Vol. 10, No. 17 (Apr. 25,1921), New York, pp. 522-523.

- Air Service estimates.

Flight, Vol. 12, No. 11 (Mar. 11, 1920), London, pp. 283-284.

-■ Air Service liaison regulations.

Air Service Information Circular, Vol. 1, No. 89 (Aug. 30, 1920), pp. 24, ill.

- Air Service promotions.

Aviation, Vol. 10, No. 7 (Feb. 14,1921), New York, pp. 209-212.

—— Air Service requests $60,000,000. Estimate for 1922 includes $22,700,000 for aircraft and accessories and $1,000,000 for reserve training centers. U. S. Air Service, Vol. 4, No. 6 (Jan. 1921), New York, pp. 19-20.

- Annual report of the Director of the Air Service.

Aerial Age, Vol. 12, Nos. 14-15 (Dec. 13-20, 1920), New York, pp. 363-364, 396-397.

Flying, Vol. 9, No. 12 (Jan. 1921), New York, pp. 719-728, ill.; Vol. 10, No. 1 (Feb.), pp. 17-21.

■--The civil operations branch of the Air Service.

Journ. Soc. Aut. Eng., Vol. 6, No. 4 (Apr. 1920), New York, p. 249.

——■ Curiosities of the U. S. Army Air Service.

The Aeroplane, Vol. 20, No. 4 (Jan. 26, 1921), London, p. 97.

- Decorations awarded the Army Air Service.

Journ. Soc. Aut. Eng., Vol. 6, No. 5 (May 1920), New York, p. 306.

- Directory of Air Service activity.

Aviation, Vol. 10, No. 24 (June 13, 1921), New York, pp. 751-752.

•-- Enlistments for the Air Service.

Aircraft Journal, Vol. 7, No. 9 (Aug. 30, 1920), New York, pp. 3-4.

- Final report of the chief of Air Service, A. E. F., to the commander in chief,

American Expeditionary Forces.

Washington, Government Printing Office, 1921, pp. 85, ill., maps, plans, diagrs.

-■ First semiannual report of the civil affairs division of the Army Air Service.

Aerial Age, Vol. 12, Nos. 22-23 (Feb. 7-14, 1921), New York, pp. 565, 586-587.

- Handbook of instructions for airplane designers. 2d edition. Engineering

division, Air Service.

Dayton, Ohio, February 1921, pp. 250, ill.

- Methods in observation practiced with Fifth Corps, First American Army, on

the fronts.

Air Service Information Circular, Vol. 2, No. 115 (Sept. 30,1920), pp. 25.

- Operating equipment for U. S. Army observation balloons; tension meters,

maneuvering blocks, maneuvering spiders, danger cones and clamps, valve-testing device, sand bags; prepared in the office of the chief of Air Service, November, 1920.

Washington, Government Printing Office, 1921, pp. 22, ill., diagrs.

•-• Progress of the Air Service.

Journ. Soc. Aut. Eng., Vol. 6, No. 5 (May 1920), New York, p. 297.

-■ Reorganization of the Air Service at reduced strength.

Aerial Age, Vol. 14, No. 5 (Oct. 10, 1921), New York, pp. 110-111, 118.

- Report of Director of Air Service. Letter from the Acting Secretary of War

transmitting a report compiled in the office of the Director of the Air Service in compliance with House Resolution 190.

House of Representatives, 66th Congress, 2d Session, Document No. 465, Washington, Government Printing Office, 1920, p. 298.

Air Service. Report of the Director of Air Service to the Secretary of War, 1920. Wasliington, Government Printing Office, 1920, pp. 19.

- Resumption of recruiting for Air Service.

Aerial Age, Vol. 11, No. 13 (Dec. 5, 1921), New York, p. 303.

- Sale of United States army surplus aeronautical equipment; engines, spare

engine parts, planes, spare plane parts, sea sleds, hangar frames, aviators' helmets, propellers, spark plugs, instruments, miscellaneous equipment . . . Material disposal and salvage division, Air Service, War Department.

Washington, Government Printing Office, 1921, pp. 20, ill., tables.

- Science and research in the air service.

Nature, Vol. 105, No. 2631 (Apr. 1, 1920), London, p. 142. Gives funds available for research and amounts allotted.

- A single Air Service.

Aerial Age, Vol. 13, No. 2 (Mar. 21, 1921), New York, p. 27. Flying, Vol. 10, No. 3 (Apr. 1921), New York, p. 105.

—— $00,000,000 requested of Congress by Air Service.

Aerial Age, Vol. 12, No. 19 (Jan. 17,1921), New York, p. 190.

- What a going Air Service entails.

Aircraft Journal, Vol. 7, No. 12 (Sept. 20, 1920), New York, p. 8.

- Work of Medical Division, Air Service.

Aviation, Vol. 8, No. 7 (May 1,1920), New York, pp. 282-283.

Air Service Engineering School, Dayton. Requirements for admission to Air Service Engineering School at Dayton.

Aerial Age, Vol. 13, Nos. 5-6 (Apr. 11-18,1921), New York, pp. 107-108, 130-131.

Air sickness. See Great Britain. Privy Council. Medical Research Council: The medical problems of flying . . .

Air speed meter. See Norton, F. H.: N. A. C. A. recording air speed meter.

Air strength. Air strength of the great powers.

Aviation, Vol. 11, No. 20 (Nov. 14,1921), New York pp. 5g0-5u3.

Air ton. The cost of air-ton miles.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 4 (Jan. 26, 1921), Loudon, pp. 84-86.

Air traffic. Does air traffic pay?

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 15 (Apr. 13,1921), London, pp. 349-350.

Air transport. The requirements and difficulties of air transport.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 21 (Nov. 23, 1921), London, p. 528.

- See Olympia: Air transport and efficiency. Two interesting papers read at

Olympia.

Airco. Airco 18 aeroplane.

Engineering, Vol. 110 (Aug. 20, 1920), Loudon, pp. 238-240, pi. 25, ill., diagr.

- Performance of Airco 16-Napier "Lion."

Aeronautics, Vol. is, No. 326 (Jan. 15, 1920), London, p. 68.

- See Aircraft Manufacturing Co.: The Airco 16 on trial.

- See Aircraft Manufacturing Co.: Some new Airco machines.

Aircraft. Aircraft or battleships?

Aerial Age, Vol. 12, No. 19 (Jan. 17, 1921), New York, p. 4s3.

- Aircraft and disarmament.

Aviation, Vol. 11, No. 11 (Sept. 12, 1921), New York, p. 315.

- Aircraft and insects.

Flight, Vol. 12, No. 25 (June 17, 1920), London, p. 643.

Aircraft. Aircraft in war and peace.

Flight, Vol. 12, No. 2 (Jan. 8, 1920), London, pp. 47-49.

-• The aircraft problem.

Aerial Age, Vol. 14, No. 13 (Dec. 5,1921), New York, p. 292.

- The structural design of aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 12 (Mar. 23, 1921), London, p. 284.

Aircraft Disposal Co. The Aircraft Disposal Co.'s exhibit.

Flight, Vol. 12, No. 29 (July 15, 1920), London, p. 770, ill. Olympia aero show.

- The Aircraft Disposals Co. (Ltd.), Regent House, Kingsway, London, W. C.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 19 (Nov. 9,1921), London, pp. 409-410.

- Injunction against the Aircraft Disposal Co.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 1 (Jan. 5,1921), London, p. 21.

Aircraft Manufacturing Co. The Airco 1G on trial.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 12 (Mar. 24,1920), London, pp. 622, 627, diagr.

- Some new Airco machines.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 17 (Apr. 28, 1920), London, pp. 871-870, ill., diagr.

Aircraft Yearbook. The Aircraft yearbook, 1920.

New York, Doubleday, Page & Co., 1920, pp. 333, ill.

Airliner. A distinctive design: The Airliner.

Aviation, Vol. 11, No. 1 (July 4,1921), New York, p. 15, ill.

- Future Zeppelin activities.

Aeronautics, Vol. 19, No. 356 (Aug. 12, 1920), London, p. 133.

-■ Post-war aviation in Germany.

Aeronautics, Vol. 18, No. 332 (Feb. 20, 1920), London, p. 170, ill.

- Tests of the Airliner.

Aviation, Vol. 11, No. 8 (Aug. 22, 1921), New York, p. 225, ill.

Airliner Engineering Co. Incorporation of Airliner Engineering Co. Aviation, Vol. 10, No. 17 (Apr. 25, 1921), New York, p. 535, ill.

Airplanes. Airplanes—applied design.

Engineering Division, Air Service Technical Orders Nos. 7 and 8 (Apr., Sept. 1919), Dayton, Ohio, pp. 9-13, 9-24, figs.

- Airplanes now to fliers and laymen. Lower in cost, far more comfortable and

easier to operate than heretofore.

Aircraft Journal, Vol. 6, No. 10 (Mar. 6, 1920), New York, pp. 12-13, ill.

- Airplanes that are different.

Scient. Amer., Vol. 122 (Feb. 14, 1920), New York, p. 162, ill.

- Amerikanisches zweimotoren Verkehrsflugzeug.

Flugsport, 13. Jahrg., Nr. 16 (3. Aug. 1921), Frankfurt, pp. 357-358, ill.

- Der deutsche Luftverkehr.

111. Flug-Wochp, 3. Jahrg., 15. Heft (20. Juli 1921), Leipzig, pp. 289-294, ill.

- Vom italienischen Luftverkehr.

Flugsport, 13. Jahrg., No. 10 (11. Mai 1921), Frankfurt, pp. 241-242.

- Life of an airplane.

Amer. Mach., Vol. 52, No. 17 (Apr. 22, 1920), New York, p. 879. Aul. Ind., Vol. 42 (Apr. 1, 1920), Now York, p. 821.

- Mastery of the skies.

Scient, Amer., Vol. 123 (Oct. 2, 1920), New York, pp. 338-339, ill.

- Die neuesten französischen Verkehrsflugzeuge.

Flugsport, 13. Jahrg., No. 10 (11. Mai 1921), Frankfurt, pp. 219-220, ill.

Airplanes. Our latest aerial creations.

Scient. Amor., Vol. 123 (Aug. 7, 1920), New York, p. 129, ill.

- "Pacific Hawk."

The Ace, Vol. 1, No. 12 (July 1920), Los Angeles, p. 22, diagr.

—— The pursuit plane of the future.

Aircraft Journal, Vol. 7, No. 11 (Sept. 13, 1920), New York, p. 15.

- Résumé of foreign data.

Engineering Division Air Service, Technical Orders No. 8 (Sept. 1919), Dayton, Ohio, pp. 83-90, figs.

- Single engined cabin airplanes discussed.

Aviation, Vol. 11, No. 17 (Oct. 24, 1921), New York, p. 489.

- Some interesting new machines.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 19 (Nov. 10, 1920), London, pp. 700-766, ill.

- The streamline airplane.

TJ. S. Air Service, Vol. 4, No. 1 (Aug. 1920), New York, p. 14.

- Technical features of the new aircraft models.

Aut. Ind., Vol. 42 (Mar. 18,1920), New York, pp. 698-700, diagr.

- Transoceanic airplane; multiple engines and transmission gears as aids to continuous flight.

Scient. Amer., Vol. 123 (Nov. 0, 1920), New York, p. 471, ill.

- The versatile aeroplane.

Aerial Age, Vol. 14, No. 3 (Sept. 26, 1921), New York, pp. 51-52.

Airport service. Standard charges for airport service.

Aviation, Vol. 9, No. 15 (Dec. 27, 1920), New York, p. 490.

Airscrews. Report on the fracture of a propeller shaft submitted by the Air Department of the Admiralty.

Tech. Kept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 284-289, ill., diagr.

- See Bairstow, L., A. Fage, and H. E. Collins: The relation between the efficiency of a propeller and its speed of rotation.

- See Fage, A.: An experimental investigation into the accuracy of the airscrew

dynamometer at the National Physical Laboratory.

■- See Fage, A., and H. E. Collins: An investigation of the magnitude of the inflow

velocity of the air in the immediate vicinity of an airscrew, with a view to an improvement in the accuracy of prediction from aerofoil data of the performance of an airscrew.

- See Fage, A., and H. E. Collins: An investigation of the mutual interference of

airscrew blades.

- See Fage, A., and H. E. Collins: An investigation of the mutual interference of

airscrews and bodies of the "pusher" type.

—— See Fage, A., and H. E. Collins: An investigation of the strength of two airscrews for F. E. 2B.

- See Fage, A., and H. E. Collins: Tests on five model airscrews and an experimental investigation of the interferences between these airscrews and a model of the end of the whirling arm at the Royal Aircraft Factory.

- See Propellers.

- See Reif, E. F.: Test of a propeller with its axis of rotation at right angles to the

wind direction.

Airship models. See Pannell, J. R., and R. Jones: Experiments on a model of the German rigid airship L-33.

- See Pannell, J. R., and N. R. Campbell: The resistance of certain streamline-shaped bodies.

Airship sheds. See Jones, R., and H. Levy: A study of the flow of air in the neighborhood of an airship shed and screens and the forces and the moments brought into play.

- See Woodford, F. G., and G. N. Fell: The variation in the wind above and

airship shed, due to the presence of the shed.

Airships. The airship crisis.

The Aeroplane, Vol. 20, No. 22 (June 1, 1921), London, p. 512.

- The airship problem.

Flight, No. 056, Vol. 13, No. 29 (July 21, 1921), London, p. 497.

- Airship sheds and their erection.

Flight, No. 642, Vol. 13, No. 15 (Apr. 14, 1921), London, pp. 263-264, ill.

- Airships and steamships.

Engineer, Vol. 131, No. 3415 (June 10, 1921), London, pp. 621-622.

- Airships and the Navy.

The Aeroplane, Vol. 21, No. 18 (Nov. 2, 1921), London, p. 379.

- Airships in long distance transport.

Aviation, Vol. 11, No. 4 (July 25,1921), New York, pp. 99-100.

- Are present types of airships a commercial proposition?

Aerial Age, Vol. 12, No. 26 (Mar. 7, 1921), New York, p. 661.

■—— Ausischten der Luftfahrtindustrie in China.

Hl. Flug-Woche, 3. Jahrg., 20. Heft (28. Sept. 1921), Leipzig, pp. 401-402.

- A comparison of British airships.

Aeronautics, Vol. 20, n. s., No. 402 (June 30, 1921), London, p. 474.

- Concerning the airships.

The Aeroplane, Vol. 20, No. 8 (Feb. 23, 1921), London, pp. 172-174.

- A criticism of the airship communications report.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 12 (Sept. 21, ]921), London, pp. 255-250.

-—— Disposal of airships. Terms of government offer.

Aeronautics, Vol. 20, n. s., No. 398 (June 2, 1921), London, pp. 388-389. Flight, No. 649, Vol. 13, No. 22 (June 2, 1921), London, pp. 374-375.

- The fate of the airships.

Flight, No. 637, Vol. 13, No. 10 (Mar. 10, 1921), London, pp. 164-165.

- For the salvation of the airships.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 1 (July 6, 1921), London, p. 14.

- The future of airships.

Flight, No. 649, Vol. 13, No. 22 (June 2, 1921), London, pp. 367-370, ill.

- The future of British airships.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 24 (June 15, 1921), London, pp. 547-548.

■- The German airships L-64 and L-71.

Aerial Age, Vol. 12, No. 20 (Jan. 24, 1921), New York, p. 518.

- The largest British-built airship.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 24 (June 10, 1921), London, pp- 550.

- The mooring of airships.

Flight, No. 640, Vol. 13, No. 13 (Mar. 31, 1921), London, pp. 217-218, 219, ill.

Airships. A new rigid airship.

Aor. Eng. Suppl. The Aeroplane, Vol. 20, No. 5 (Feb. 2, 1921), London, p. 116.

-■ Notes on the operation of nonrigid airships.

Washington, D. C, U. S. Navy Department, 1920, pp. 37.

- Ocean airships.

Aerial Age, Vol. 14, No. 16 (Dec. 26, 1921), New York, p. 376.

- On airships and international imbecility.

The Aeroplane, Vol. 21, No. 5 (Aug. 3,1921), London, pp. 93-94.

•- On the airship question.

The Aeroplane, Vol. 20, No. 24 (June 15,1921), London, p. 541.

- On traveling by airship.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 25 (June 22, 1921), London, pp. 567-568

- The present state of airship development.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 24 (Dec. 14, 1921), London, p. 588.

- Problems of aeroplanes and airships.

Aeronautics, Vol. 20, n. s., No. 394 (May 5,1921), London, p. 325.

- Reprieve for the airships.

Flight, No. 655, Vol. 13, No. 28 (July 14, 1921), London, pp. 466-467.

- Rigid airships.

Aerial Age, Vol. 13, Nos. 6 and 8 (Apr. 18 and May 2,1921), New York, pp. 134 and 182.

- Scrapping the airships.

The Aeroplane, Vol. 21, No. 3 (July 20, 1921), London, p. 62.

- Unsolved difficulties of the airship.

Aeronautics, Vol. 20, n. s., No. 382 (Feb. 10,1921), London, p. 91.

- What airships can do.

Aerial Ago, Vol. 14, No. 6 (Oct. 17,1921), New York, p. 134.

- World's airships—1914 to 1920.

Aut. Ind., Vol. 42 (Feb. 5,1920), New York, pp. 412-113.

- See Air Ministry: The Air Ministry and the airship schemes.

- Sec Burgess, Charles P.: Bending moments, envelope, and cable stress in non-rigid airships.

•- See Butcher, F. L. C: Airship mooring and handling.

- See Germany: German views on airships.

- See Grey, Charles Grey: Why Great Britain has no airships.

- See Italy: New Italian airship. ,

■- See Lewitt, E. H.: Circumferential wiring of rigids.

- See Lewitt, E. H.: The hull of the rigid airship.

- See Lewitt, E. H.: Temperature stresses in the rigid airship.

- See Maxfield, L. H.: Operation of a rigid airship.

- See Metiviev: Frenchman's proposed airship in the civil war.

- See Münk, Max Michael: The drag of Zeppelin airships.

- See Nobile, Umberto: Semirigid versus rigid airships.

- See Scott, G. H.: Airship piioting.

- See Scott, G. H.: The present state of airship development.

- See Summer, P. II.: A stabilizing raft for mooring airships over the sea.

Airships. See Whale, George: The mooring and handling of airships on the ground.

- See Whale, George: The Zeppelin airships, L-64 and L-71.

Airship mooring masts. See Grissell Prize: Airships and architects.

Airway. America's first airway.

Flying, Vol. 10, No. 2 (Mar. 1921), New York, pp. 63-64, map.

- America's first model airway.

Aviation, Vol. 10, No. 9 (Feb. 28, 1921), New York, pp. 207, 270, map.

- How to establish an airway.

Aerial Age, Vol. 13, No. 12 (May 30, 1921), New York, pp. 276-277.

Aische, A. du Bois d'. Deux braves: Artigaut et Legrain.

Vie Aérienne, No. 167 (22 janv. 1920), Paris, pp. 914-915, ill.

Akron-Detroit. First dirigible passenger line Akron-Detroit.

TJ. S Air Service, Vol. 3, No. 5 (June 1920), New York, p. 23.

Alabama. See Bombing: Bombing tests of the TJ. S. S. Alabama.

- See Fullam, W. F.: Admiral Fullam on the Alabama tests.

Alaska. Alaska flying expedition.

Bulletin Pan American Union, Vol. 51 (Oct. 1920), Washington, B.C., pp. 377-385, ill., map

- Alaska flying expedition on its way.

Aircraft Journal, Vol. 7, No. 4 (July 26, 1920), New York, pp. 3-6, ill.

- Alaskan air pioneers.

Aerial Age, Vol. 12, No. 8 (Nov. 1,1920), New York, p. 221.

- The Alaskan flying expedition.

Aeronautics, Vol. 19, No. 367 (Oct. 28, 1920), London, pp. 310-311. Aircraft Journal, Vol. 7, No. 6 (Aug. 9,1920), New York, p. 10.

- The Alaskan flying expedition. A remarkable achievement for the Army air

service.

Flying, Vol. 9, No. 10 (Nov. 1920), New York, pp. 626-630, ill., map.

- Alaskan flying expedition completes flight.

Aircraft Journal, Vol. 7, No. 17 (Oct. 25, 1920), New York, pp. 5-6.

- Army-plane flight to Nome successful.

Popular Mechanics, Vol. 34 (Oct. 1920), Chicago, p. 511, map.

- Regreso de la expedición aérea a Alaska.

Tohtli, año 5, Num. 4 (nov.-dic. 1920), México, pp. 206-207.

- Return of the Alaskan expedition.

Aerial Age, Vol. 12, No. 9 (Nov. 8, 1920), New York, pp. 251-252, ill. Journ. Soe. Aut. Eng., Vol. 7, No. 6 (Dec. 1920), New York, p. 554.

- See Military aeronautics: Army flight to Alaska.

- See Street, St. Clair: The Alaskan flying expedition.

-■ See Tinker, Clifford A.: Flying to Alaska. In many ways the most remarkable

flight ever undertaken.

- See Tinker, Clifford A.: To Nome and back.

Alayrac. Un livre: résumé des principaux travaux exécutés pendant la guerre au laboratoire aérodynamique Eiffel.

L'Aéronautique, 1» année, No. 9 (fév. 1920), Paris, pp. 405-406.

-■ Mouvement du centre de gravité d'un solide symétrique par rapport a un plan

vertical se déplaçant dans un milieu résistant.

C. R. Acad. Sci., T. 172, No. 18 (mai 2, 1921), Paris, pp. 1089-1092, ill. Motion in resisting medium.

Albatros. The Albatros commercial machine. The "L-57."

Flight, Vol. 12, No. 50 (Dec. 9, 1920), London, p. 1251, diagr.

- The Albatros L-57.

Aerial Age, Vol. 12, No. 17 (Jan. 3,1921), New York, p. 446.

- Das Albatros-Verkehrsflugzeug Typ L-57.

Flugwelt, 2. Jahrg., 24. Heft (24. Nov. 1920), Leipzig, pp. 584-587, ill. Luftweg, Nr. 51-52 (29. Dez. 1921), Berlin, pp. 356.

- The Albatros W-10 flying boat.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 13 (Mar. 30, 1921), London, p. 308, diagr.

- A new Albatros monoplane.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 20 (May 18,1921), London, p. 466, diagr.

- See Flanders, L. Howard: The flight of the Albatros.

- See Friedensburg, Walter: Albatros gegen U-boot.

- See Hildesheim, Erik: Albatros aircraft.

- See Kostiwal, Hans: Der österreichische Albatros . . .

Alberti, Felix F. Die Landungssicherung.

Luftweg, Nr. 17-18 (5. Mai 1921), Berlin, p. 137.

Albini, Napoleone. Letteratura tecnica e mentalità industriale. L'Aeronautica, Anno 3, Num. 1 (marzo 1920), Roma, pp. 4-5.

Alcogas. Alcogas as aviation fuel compared with export grade gasoline.

Joum. Soc. Aut. Eng., Vol. 6, No. 6 (June 1920), New York, pp. 397-401.

- See Gage, V. R., S. W. Sparrow, and D. R. Harper, 3d: Comparison of alcogas

aviation fuel with export aviation gasoline.

- See Gage, V. R., S. W. Sparrow, and D. R. Harper: Comparison of alcogas

aviation fuel with petrol.

■-■ See Gage, V. R., S. W. Sparrow, and D. R. Harper: Comparative power properties of alcogas and aviation gasoline.

Alcohol. See Fuel: Partial test of an alcohol fuel.

Aldrich, H. S. Frank Luke, balloon ace.

St. Nicholas, Vol. 47 (Oct. 1920), New York, pp. 1094-1099, ill.

Allen, E. G. Has the airplane bomb a case against armored ships?

U. S. Air Service, Vol. 5, No. 4 (May 1921), New York, pp. 8-10, diagr.

- A tip for the aircraft manufacturer and the prospective operations of commercial aircraft transportation companies.

Aerial Age, Vol. 13, No. 13 (June 6,1921), New York, pp. 297-298.

Allen, Edmund Turney. See Norton, Frederick Harwood, and Edmund Turney Allen: Accelerations in flight. ,

- See Norton, Frederick Harwood, and Edmund Turney Allen: Control in circling

flight.

Allen, S., and T. R. Truax. Glues used in airplane parts.

Fifth annual report of National Advisory Committee for Aeronautics, Washington, 1920, pp. 385-408, ill.

National Advisory Committee for Aeronautics, Report No. 66, Washington, Government Printing Office, 1920, pp. 28, ill.

Allied and associated powers, 1914. . . . Convention for the regulation of aerial navigation, Paris, Oct. 13, 1919.

London, H. M. Stationery Office, 1922, pp 110, diagrs.

Alloys. See P. R. Corona Metal: A new yellow metal.

Alloys. See Zeppelin: Zeppelin alloy. British view of the U. S. discovery.

Alonso, Leopoldo. El premio.

Tohtli, ano 5, Num. 1 (agosto 1920), Mexico, pp. 21-24, ill.

Alps. Le réseau aérien international et les Alpes.

Suisse Aérienne, 3« année, 1921, No. 21, Berne, pp. 315-318, ill.

- See Lewis, George M. D.: First American piloted airplane to cross the Alps.

Altitude. Air "submarines" expected to sound the depths far beyond the clouds. The Naviator, Vol. 1, No. 10 (Apr. 17, 1920), Pensacola, Fia., pp. 1, 5.

-■ Air submarines to sound the depths beyond the clouds.

Literary Digest, Vol. 65 (Apr. 10, 1920), New York, pp. 101-104.

——• Altitude record for pilot and 3 passengers.

Aircraft Journal, Vol. 6, No. 22 (May 31, 1920), New York, p. 10, ill.

- Calibration of barographs used in airplane altitude measurements.

Scient. Amer. Monthly, Vol. 2 (July 1920), New York, pp. 80-81.

- Determination of altitude records.

Aviation, Vol. 8, No. 5 (Apr. 1, 1920), New York, p. 192.

•- Flight at high altitudes.

Aerial Age, Vol. 12, No. 19 (Jan. 17,1921), New York, p. 489.

•- From kite flying to breaking the altitude record.

Literary Digest, Vol. 65 (June 19,1920), New York, pp. 86-89.

- High-altitude winds mean high speeds.

Aircraft Journal, Vol. 7, No. 13 (Sept. 27, 1920), New York, p. 11.

- High flying to be made safe.

U. S. Air Service, Vol. 3, No. 6 (July 1920), New York, p. 24.

- Höhenrekord ohne Fluggast; Höhenrekord mit einem Fluggast.

Flugwelt, 2. Jahrg., 26. Heft (22. Dez. 1920), Leipzig, pp. 641-642.

- How altitude records are estimated.

Pop. Mech., Vol. 34 (Sept. 1920), Chicago, p. 366.

-■ The possibilities of flying high.

The Naviator, Vol. 1, No. 10 (Apr. 10,1920), Pensacola, Fia., p. 3.

- Preparation of plane and motor for altitude flight.

Aerial Age, Vol. 12, No. 5 (Oct. 11,1920), New York, p. 142, ill.

- Seven and half miles high in mock flight.

Pop. Mech., Vol. 34 (Dec. 1920), Chicago, p. 841, ill.

- 6,000 feet, eight minutes, sets high record.

The Naviator, Vol. 1, No. 13 (May 8, 1920), Pensacola, Fia., pp. 1, 3.

- Staying alive seven miles up.

Literary Digest, Vol. 65 (May 1, 1920), New York, pp. 110-111.

- The value of high-altitude flying.

Aeronautics, Vol. 19, No. 351 (July 8,1920), London, p. 21. Aircraft Journal, Vol. 6, No. 26 (June 28,1920), New York, pp. 6-7.

- La vie et les voyages aux grandes altitudes.

L'Aérophile, 28= année, Nos. 11-12 (1«-15 juin 1920), Paris, pp. 182-186, ill.

- Le vol aux hautes altitudes.

Suisse Aérienne, 2= année, No. 16 (25 août 1920), Berne, pp. 242.

- LeB voyages en aéroplane à haute altitude.

La Nature, Suppl., 48* année, 2. Sem., No. 2417 (31 juil. 1920), Paris, p. 33.

- What it's like seven miles up in the clouds.

The Naviator, Vol. 1, No. 5 (Mar. 13, 1920), Pensacola, Fia., p. 1.

Altitude. Will man soar to unknown heights?

Illustrated World, Vol. 33 (July 1920), Chicago, pp. 806-807, ill.

- Winged submarines for high-altitude flying.

Scient. Amer. Monthly, Vol. 2 (July 1920), Now York, p. 3.

- See Clark, V. E.: Maintaining airplane engine power at great altitudes.

- See Clark, V. E.: New York to San Francisco in nine hours made possible when

engine efficiency is maintained at high altitudes.

- See Coffin, J. G. : Attainment of high levels in the atmosphere ; reply to A. Mc Adie.

•- See Commercial aeronautics: Aerial passenger travel at high altitudes.

- See Cornthwaite, H. G.: Altitude determinations based on barometric readings.

- See DH: Climb of service type DH tested at Langley.

- See Engines: Extract of British report on variation of engine horsepower with

altitude.

- See Engines: The variation of horsepower with altitude.

■- See Germany: The German B. M. W. high-altitude engines.

- See Guglielminetti: Les hautes altitudes et l'organisme humain.

■- See Guglielminetti: More about high flying.

- See Guglielminetti: La vie et lès voyages aux très hautes altitudes; cabines

closes, à'pression constante, pour ballons et avions.

-- See Gundry, P. G.: The effect of temperature and altitude of aerodrome in the

taking off of aeroplanes.

- See Mersey, Mayo D., Franklin L. Hunt, and Herbert N. Eaton: The altitude

effect on air speed indicators.

- See Howard, R.: Seeking the seven-mile ceiling.

- See James, W. S., and S. R. Parsons: Effect of altitude on radiator performance.

--See Kirsch: Les records de hauteur. Kirsch et le record de hauteur.

- See König, Georg: Indiziertes Steigvermögen statt Leistungsbelastung.

- See McAdie, A.: Attainment of high levels in the atmosphere.

- See MacReady, John A.: Airplane reaches altitude of 7.75 miles.

- See MacReady, John A.: MacReady's altitude flight.

- See MacReady, John A.: New altitude record, 40,800 feet.

- See Mallock, A.: Best altitude for aerial scouting at sea.

- See Martinot-Lagarde: Fonctionnement des moteurs en atmosphère raréfiée.

•- See Noack, W.G. : Tests of the Daimler D-IVa engine at a high-altitude test bench.

- See Parachutes: Drops 19,800 feet from an airplane. San Antonio aviator sets

new world record for parachute jump.

- See Râteau, A.: Considérations sur le vol aux très grandes altitudes.

- See Râteau, A.: Quelques considérations sur les vols aux très grandes altitudes

et sur l'emploi du turbo-compresseur.

- See Richardson, H. C. : Factors involved in high airplane speed at great altitude.

- See St., A.: Ueber Vibrationen und Schüttelbewegungen in grossen Flughöhen.

-— See Schroeder, R. W.: Altitude record of Maj. R. W. Schroeder.

-- See Schroeder, R. W. : Major Schroeder in new altitude flight.

- See Schroeder, R. W.: Major Schroeder's altitude flight.

- See Schroeder, R. W. : Major Schroeder's record altitude flight.

- See Schroeder, R. W.: Major Schroeder's true altitude 33,000 feet.

- See Schroeder, R. W.: Notes on Major Schroeder's altitude flight.

- See Schroeder, R. W.: Schroeder is none worse for big drop.

Altitude. See Schroeder, R. W.: Wind blows 220 miles hourly at an altitude of 30,000 feet, Major R. W. Schroeder says.

—■— See Schroeder, R. W.: World altitude record by Major Schroeder.

- See Stettbach er, E.: Sonnenlicht und Himmelsblau in grossen Höhen.

--■ See Stettbach er, A.: Theorie der höhenflüge und maximale Flugzeuggeschwindigkeiten.

- See Swan, Charles Atkin: Some physical and psychical effects of altitude.

--■ See Villey, Jean.: Les moteurs d'avion; hautes altitudes.

- See Villey, Jean.: Sur les vols aux hautes altitudes.

- See Wood, R. McK., and H. L. Stevens: The design of aeroplanes for use at

great heights.

Alula. The "Alula"—a new high-lift wing.

The Aeroplane, Vol. 19, No. 3 (July 21, 1920), London, p. 1S2.

■-■ The "Alula" demonstration.

The Aeroplane, Vol. 21, No. 16 (Oct. 19, 1921), London, pp. 338-339.

- The Alula high-lift wing.

Aerial Age, Vol. 11, No. 25 (Aug. 30, 1920), New York, pp. 836-838, ill.

- The "Alula" wing. A suggested application.

Flight, Vol. 12, No. 32 (Aug. 5,1920), London, pp. 862-863, ill.

- The "Alula" wing demonstrated.

Flight, No. 669, Vol. 13, No. 42 (Oct. 20, 1921), London, p. 687.

- First demonstration of the Alula wing.

Aviation, Vol. 11, No. 23 (Dec. 5, 1921), New York, p. 662, ill.

- A new high-lift wing.

Aerial Age, Vol. 11, No. 23 (Aug. 16, 1920), New York, p. 774, ill.

- A novelty in aeroplane wings.

Flight, Vol. 12, No. 30 (July 22, 1920), London, p. 814, ill.

- See Sayers, W. H.: Another new wing.

- See Wings: Goods by air. The meaning of the Alula wing.

Aluminum. Aluminum and its alloys.

Aeronautics, Vol. 18, No. 368 (June 17, 1920), Tendon, p. 470.

-—■ Aluminum and its alloys applied to aircraft construction.

Aeronautics, Vol. 18, No. 348 (June 17, 1920), London, p. 470.

- Aluminum alloys.

Aviation, Vol. 9, No. 2 (Aug. 15, 1920), New York, p. 58.

- Die autogene Schweissung des Aluminiums.

111. Flug-Woche, 3. Jahrg., 15. Heft (20. Juli 1921), Leipzig, pp. 310-317, ill.

- The composition of aluminum alloys.

Aerial Age, Vol. 13, No. 8 (May 2,1921), New York, p. 185.

- Het eerste aluminium luchtschip.

Avia, 8e jaarg., No. 7 (15 mai 1920), Rotterdam, p. 79.

- A real aluminium solder at last.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 13 (Sept. 28, 1921), London, p. 282.

——■ See Hildesheim, Erik: The Zeppelin-Lindau all-aluminum biplanes.

- See Jefferies, Zay: Aluminum alloys.

44439—25-3

Aluminum. SeeJlr-Q: The log of an aluminum air liner in first passenger flight, New York to Chicago, the JL-6 German metal monoplane beats the Twentieth Century-Limited by 12 hours.

- See Knauss, A. C: Efficiency of aluminum leaf on airplane propellers.

---See Merica, Paul D.: Aluminum and its light alloys.

- See Pannell, E. V.: Aluminum in airship construction.

Amand, G. Le service aérien Paris-Londres.

L'Aérophile, 28« année, Nos. 9-10 (1-1« 15 mai 1920), Paris, pp. 138-143.

Amans. L'aérovoilier Nimfuehr.

Suisse Aérienne, 2« année, No. 17 (10 sep. 1920), Berne, pp. 253.

- Poussées et puissances de pales tournantes inégalement tordues.

c. r. Acad. Sei., T. 109, No. 18 (3 nov. 1919), pp. 779-781.

—— Sur la grande écart en aviation.

La Conq. l'air, 3« année, no. 1 (1«' janv. 1920), Bruxelles, pp. 13-14.

Ambulances. Aerial ambulances.

Aerial Age, Vol. 12, No. 26 (Mar. 7, 1921), New York, p. 662.

- See Military aeronautics: Ambulance plane tested.

America. American and foreign aircraft.

The Naviator, Vol. 1, No. 10 (Apr. 17, 1920), Pensacola, Fia., p. 4.

•- Amerika und seine Flugzeugindustrie.

Flugwelt, 2. Jahrg., 15. Heft (21. Juli 1920), Leipzig, pp. 397.

- Der amerikanische Landesbeirat für Luftfahrt.

Zeitschr. Flugt. Motorluptsch, 12. Jahrg., 7. Heft. (15. Apr. 1921), München, pp. 100-102. Continuation of article in Hefte. 23-24, 1920, p. 345.

- "Even the name is American." The passing of the old "Hisso."

The Ace, Vol. 2, No. 6 (Jan. 1921), I,os Angeles, p. 10, ill.

- See Orcy, L. d': Dawn of American commercial aviation.

American airways. Plans of the American airways.

Aerial Age, Vol. 13, No. 24 (Aug. 22, 1921), New York, pp. 566-567, ill.

American Aviation Mission. Report of American Aviation Mission. New York, Aircraft Journal, 1919, p. 30.

American Bar Association. American Bar Association aviation committee makes report.

Aerial Age, Vol. 12, No. 24 (Feh. 21, 1921), New York, p. 607.

- Report of special committee on the law of aviation. Charles A. Boston, Chairman.

[New York, 1921], pp. 33.

- Special Committee on the Law of Aviation. First preliminary report to the

executive committee (with annexed list of publications). Charles A. Boston, chairman.

[New York, 1921], pp. 40.

American Expeditionary Forces. Ring sight. Confidential. American Expeditionary Forces Air Service Training Section. Paris, pp. 24, ill.

■- Study and utilization of aerial photographs. Pt. 1, Text. Translated from the

French edition of Jan. 15, 1918. Headquarters American Exp'editionary Forces, France, 1918. Issued down to include intelligence officers of divisional staffs. Paris, 1918, pp. 80.

American Legion. Aerial program at Kansas City Legion convention. Aerial Age, Vol. 14, No. 4 (Oct. 3, 1921), New York, p. 77.

—■—■ The American Legion flying meet.

Aviation, Vol. 11, No. 20 (Nov. 14, 1921), New York, pp. 564-565, ill.

Ames, Joseph S. Doctor Ames on aviation development.

Aerial Age, Vol. 14, No. 6 (Oct. 17, 1921), New York, p. 125.

Ammunition. Report of test of French 37 mm. high-explosive ammunition (Cannon test report No. 15).

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 19 (May 5, 1920), Washington, Government Printing Office, pp. 9, ill.

Amphibian planes. Amphibian undercarriages from Martlesham.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 14 (Oct. 6,1920), London, pp. 613-614, diagr.

- Amphibians.

Aerial Age, Vol. 13, No. 13 (June 6,1921), New York, p. 302.

—■—• Amphibians for the Air Ministry competition.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 12 (Sept. 22, 1920), London, pp.. 551-558, ill., diagr.

- Beardmore 10-passenger amphibian flying boat, W. B. 9.

Aeronautics, Vol. 19, No. 357 (Aug. 19, 1920), London, pp. 147-149, ill., diagr.

-• Navy specifications for two-place amphibian planes.

Aviation, Vol. 8, No. 9 (June 1, 1920), New York, p. 362.

- The Supermarine Amphibian.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 13 (Sept. 29, 1920), London, p. 586, diagr. Aeronautics, Vol. 19, No. 363 (Sept. 30, 1920), London, pp. 237-238, ill., diagr.

- See G., C. G.: On the amphibian competition.

'Amphibie." Das Wasser-Landflugzeug "Amphibie."

Flugwelt, 2. Jahrg., 10. Heft (12. Mai 1920), Leipzig, pp. 287-288, ill.

Amphyglider. The Miller amphyglider.

Aeronautics, Vol. 19, No. 366 (Oct. 21,1920), London, p. 294.

Amsterdam. See London: The opening of the K. L. M. London-Amsterdam service.

An engineer. Metal construction.

Aeronautics, Vol. 18, No. 326 (Jan. 15,1920), London, p. 72, diagr.

An ex-pilot. Post-impressions of the Air Conference.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 19 (Nov. 10, 1920), London, p. 770.

Anchorage. The universal aircraft anchorage.

Flying, Vol. 10, No. 1 (Feb. 1921), New York, pp. 22-23, ill.

Anderson, G. V. See Dickinson, H. C, W. S. James, and G. V. Anderson: Variation of horsepower with altitude and compression ratio.

- See Dickinson, H. O, W. S. James, and C. V. Anderson: Variation of horsepower with temperature.

Anderson, J. B. Meteorological aspects of the recruiting trip of the NO-4.

Monthly Weather Review, Vol. 48, No. 9 (Sept. 1920), Washington, pp. 529-532.

Anderson, S. Herbert. Note on measurement of speed of airplanes. Aviation, Vol. 10, No. 8 (Feb. 21, 1921), New York, pp. 233-234.

Andes. Across the Central American Andes.

Aviation, Vol. 11, No. 4 (July 25, 1921), Nesv York, pp. 107-108, ill.

- Over the Andes with a passenger.

Flight, No. 649, Vol. 13, No. 22 (June 2, 1921), London, p. 377.

Andrews, S. T. G., and S. F. Benson. Aeroplane design. Now York, E. P. Dutton & Co., 1920, 454 pp.

- Aviator's tell-tales; how the pilot keeps track of distances and speeds.

Scient. Vol. 125 (Oct. 15,1921), Now York, pp. 274-275.

- Helium, the substitute for hydrogen in balloons and dirigibles.

General Electric Review, Vol. 23 (Mar. 1920), Schenectady, N. Y., pp. 227-228.

•-• Theory and practice of aeroplane design.

London and New York, Chapman and Hall, Ltd., 1920, pp. xii, 454, ill. Reviowed in Zeitschr. Flugt. Motorluftsch, 12. Jahrg., 22. Heft (30. Nov. 1921), Mumien, pp. 332-333.

Aneroid. See Hersey, M. D.: Aneroid investigations in Germany.

Angle, Glenn D. Airplane engine encyclopedia.

First edition, copyright 1921, Glenn D. Angle, The Otterbein Press, Dayton, Ohio, pp 547, ill.

Angle of incidence. L'incidence variable et son application pratique. Suisse Aérienne, 2« année, No. 11 (10 juin 1920), Berne, pp. 156, ill.

"Anglo-Dane." Commercial aviation in Germany.

Aeronautics, Vol. 19, Nos. 371-372 (Nov. 25-Dec. 2, 1920), London, pp. 375-376, 396, maps.

Angström, Tord. Luftkraften och geografien. Stockholm, 1920.

Noted in Flug, Sondernummer (Dez. 1920), Wien, p. 128.

Animal flight. See Oehmichen, Etienne: Nos maîtres les oiseaux, étude sur le vol. animal et la récupération de l'énergie dans les fluides.

L'Année Aéronautique. [1- année] 1919-1920-

Paris, Dunod, 1920- , Editors: 1919-20, L. Hirschauer, Ch. Dollfus.

Annunzio, Gabriele d'. International aviation meet on Lake Garda for the Gabriele d'Annunzio cup.

Aerial Age, Vol. 13, No. 24 (Aug. 22, 1921), New York, p. 572. Aeronautics, Vol. 20, n. s., No. 397 (May 26, 1921), London, p. 381.

Ans Aldo. The Ansaldo A-300 C.

Aviation, Vol. 10, No. 1 (Jan. 3, 1921), New York, pp. 11-12, ill.

- The Ansaldo A-300 C commercial biplane.

Flight, Vol. 13, No. 26, No. 653 (June 30, 1921), London, pp. 437-438, ill.

- Ansaldo and SVA airplanes.

Aviation, Vol. 11, No. 26 (Dec. 26, 1921), New York, p. 731.

- The Ansaldo 300 C. biplane.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 26 (Dec. 29, 1920), London, pp. 956, 958, ill., diagr.

——• The Ansaldo limousine.

Aerial Age, Vol. 13, No. 12 (May 30, 1921), New York, pp. 275, ill

- New Ansaldo transport airplane.

Aviation, Vol. 9, No. 5 (Oct. 1, 1920), New York, p. 165, ill.

Anschutz. See Gradenwitz, Alfred: German gyrogauges. The Anschutz aircraft horizon.

Ansermier, Louis. L'aérostation militaire à travers les âges.

Suisse Aérienne, 2= année, No. 23 (15 dec. 1920), Berne, pp. 350-355., ill.; 3» année, No 1 (Jan. 1921), Berne, pp. 2-5, ill.

Antwerp. Flugzeug-Wettbewerbe in Antwerpen 1920.

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., 1. Heft (15. Jan. 1920), Berlin, p. 12.

- Le meeting aéronautique d'Anvers.

L'Aéronautique, 2» année, No, 15 (août 1920), Paris, pp. 119-120, ill.

Antwerp. Le meeting aéronautique de la VIIe Olympiade à Anvers. L'Aérophile, 28" année, Nos. 5/6 (1«-15 mar. 1920), Paris, pp. 80-81.

- See Germany: German aeronautical material at Antwerp.

Anzani engine. The mounting of Anzani radial engines.

Aerial Age, Vol. 11, No. 13 (June 7, 1920), New York, p. 435, ill.

Apax. The Apax plug cleaner.

Flight, No. 630, Vol. 13, No. 3 (Jan. 20, 1921), London, p. 49, ill.

Apolda. Apolda und der Luftverkehr.

Aut. Flugv., Nr. 9 (Sept. 1921), Berlin, pp. 337-33S, ill.

Apparatus. See L'appareil respiratoire automatique.

L'appareil respiratoire automatique.

Suisse Aérienne, 2= année, Nos. 9-10 (mai 1920), Berne, pp. 134-135., ill.

Appell, Paul. L'enseignement et l'aéronautique.

Aéronautique, 3« année, No. 30 (nov. 1921), Paris, pp. 428-429.

Arabian Desert. Conquest of Arabian Desert by aircraft.

Aerial Age, Vol. 14, No. 9 (Nov. 7, 1921), New York, p. 208. Aviation, Vol. 11, No. 19 (Nov. 7, 1921), New York, p. 535.

Archdeacon, Ernest. L'avion autostable Sallard.

L'Aérophile, 28e année, Nos. 9-10 (l«r-15 mai 1920), Paris, pp. 144-145.

- Le grand problème du vol sans vitesse. L'alerion Lacoin et Damblanc.

L'Aérophile, 28e année, Nos. 13-14 (1»-15 juil. 1920), Paris, pp. 168-172, ill.

■- Pour aider a démêuler le secret du vol a voile.

L'Aérophile, 28= année, Nos. 22-23 (1«-15 nov. 1920), Paris, pp. 338.

- De Toulouse à Casablanca en avion.

L'Aérophile, 29« année, Nos. 5-6 (1«'-15 mars 1921), Paris, pp. 79-84, ill., maps.

Archer, R. S. Some metallurgical features of the Liberty engine.

Chemical and Metallurgical Engineering, Vol. 22 (Jan. 28, 1920), New York, pp. 176-178.

Architecture. The Society of Architects and aeronautical architecture.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 25 (June 22, 1921), London, p. 570.

- See Grissell prize: Airships and architects.

Argentina. Argentine Army air service.

Aerial Age, Vol. 12, No. 25 (Feb. 28, 1921), New York, p. 640.

- Argentine aviation feats.

Bulletin, Pan American Union, Vol. 51 (July 1920), Washington, D. C, pp. 50-54, ill., map.

- Aus Argentinien.

Flugsport, 12. Jahrg., Nr. 2 (19. Jan. 1921), Frankfurt, pp. 37-38; 13. Jahrg., Nr. 4,13 (16. Feb., 22. Juni 1921), pp. 93-9.5, 289-292, ill.

—— Aviation in the Argentine.

Aerial Age, Vol. 13, No. 23 (Aug. 15, 1921), New York, p. 548. Aviation, Vol. 10, No. 2 (Jan. 10, 1921), Now York, p. 42.

- British enterprise abroad.

The Aeroplane, Vol. 20, No. 12 (Mar. 23, 1921), London, p. 289.

■- Civil air service in Argentina.

Flight, No. 650, Vol. 13, No. 23 (June 9, 1921), London, p. 391.

Arizona. A flight through the Grand Canyon of Arizona.

The Ace, Vol. 3, No. 1 (Aug. 1921), Los Angeles, p. 10.

Armament test. Armament test of single-seater pursuit-airplane ordnance-engineei-ing-corporation type D. (Report of test No. 1.)

Air Servico Information Circular (Heavior-than-air), Vol. 1, No. 14 (Mar. 24, 1920), Washington, Government Printing Office, pp. 4.

Armbrusteiî, P. Bergung des Ballons "Bern" von der Fahrt Steffisburg-Höhner-tiüigletscher vom 19. Juni 1921.

Suisse Aérienne, 3» année, 1921, No. 12, Berne, pp. 169-173, ill.

Armengaud, jeune, Jules-Alexis-Marie. Ceux qui disparaissent Jules Armen-gaud jeune.

L'Aéropiüle, 29«- année, Nos. 5-6 (1«-15 mars 1921), Paris, p. 78.

Armstrong, Douglas B. Postage stamps of the air.

Flight, Vol. 12, No. 13 (Mar. 25, 1920), London, pp. 341-315.

Armstrong, \V. G. Sir W. G. Armstrong Whitworth Aircraft (Ltd.).

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 9 (Aug. 31, 1921), London, p. 198, 111..

Armstrong-Siddeley. Armstrong-Siddeley Motors (Ltd.).

Aerouautics, Vol. 20, n. s., No. 385 (Mar. 3, 1921), London, p. 146, diagr.

- The Armstrong-Siddeley "Sinaia" (Siddeley "Tiger" engines).

Flight, No. G03, Vol. 13, No. 36 (Sept. 8, 1921), London, p. 605, ill.

Armstrong-Siddeley Motor-Car Co., Ltd., Coventry. See Great Britain: Modern British engines.

Army. Names of Army air stations.

Aviation, Vol. 10, No. 11 (Mar. 14, 1921), New York, p. 344.

Arnold, Felix. Fallschirm und Luftverkehr.

Luitweg, Nr. 39-40 (6. Okt. 1921), Berlin, pp. 283-284, m.

Arnold, H. H. Aerial forest fire patrol—1920.

Aviation, Vol. 10, No. 2 (Jan. 10, 1921), New York, pp. 45-47, map.

- Commercial possibilities of aircraft in the West.

Journal of Electricity, Vol. 45 (Oct. 15, 1920), San Francisco, pp. 364-365, ill.

- Leaping the snow-clad peaks of the West and photographing our only active

volcano.

TJ. S. Air Service, Vol. 4, No. 3 (Oct. 1920), New York, pp. 12-14, ill.

Arondel. See Blanchet, Georges: Aviateurs Contemporanis. Arondel.

Arouze, Marcel. Une tournée en Espagne.

Vie Aérienne, No. 177 (1« avril 1920), Paris, pp. 1078-1079, ill.

Arruil, Juan Soto. El cadete observador Augusto X. Langner. Tohtli, año 5, Nùm. 1 (agosto 19^0), México, pp. 15-17, ill.

Artifex. Aero engines at the Crystal Palace. Some developments and greater possibilities.

Flight, Vol. 12, Nos. 33, 34 (Aug. 12, 19, 1920), London, pp. S84-8S7, 904-906, ill.

—— The piston-ring problem. The Allen solution.

Flight, Vol. 12, No. 45 (Nov. 4, 1920), London, pp. 1150-1151, diagr.

Artillery, antiaircraft. El servicio de la artillería antiaérea en los Estados Unidos. Tohtli, año 5, Núm. 2 (sept. 1920), México, pp. 38-39, ill.

Ashbolt. The Imperial airship service. Mr. Ashbolt's suggestion.

Aeronautics, Vol. 21, n. s., No. 403 (July 7, 1921), London, pp. 13-14.

Journ. Roy. Soc. Arts., Vol. 70, No. 3605 (Dec. 23, 1921), London, pp. 102-121.

Aspect ratio. Aspect ratio test.

Engineering Division, Ah Service, Technical Orders No. 16 (May 1920), Dayton, Ohio, pp. 59-66.

- See Fage, A., and J. D. Coales: Experiments with two aerofoils of high aspect

ratio.

- See Korvin-Kroukovsky, B. V.: Correction of the aerofoil characteristics for

aspect ratio.

Aspect ratio. See Lift: The effect of aspect ratio on lift.

Associazione italiana di aerotecnica. Parte ufficiale.

L'Aeronautica, anno 3, Num. 5-8 (luglio-agosto 1920), Koma, pp. 210-248.

Aston, F. W. Fabric and dope, with special reference to deterioration of strength and tautness.

Aerial Age, Vol. 12, No. 2 (Sept. 20, 1920), New York, pp. 50-51.

- Report on the action of sunlight on aeroplane fabric; its nature and prevention.

Tech. Kept. Advis. Com. Aeronautics, 1917-18, vol. 3, London, 1921, pp. 1038-1047, ills., diagrs,

—— Report on some strength tests of aeroplane fabric exposed to weather and their relation to sunlight intensity.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 1048-1050, diagrs.

Aston, Wilfrid Gordon. Wind wagons.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 18 (May 5, 1920), London, p. 922.

Astra Torres. The Astra Torres airship.

Aeronautics, Vol. 19, No. 355 (Aug. 5, 1920), London, p. 116, ill.

Atkins, W. R. G., and Guy Barr. Report on the use of dopes and fabrics in Egypt. Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 584-642.

Atkins, W. R. G. Variations of temperature and humidity with altitude; notes on the wind and other meteorological observations made at Aboukir.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 1125-1132, diagrs.

■- See Barr, Guy; W. J. S. Naunton, and W. R. G. Atkins: Tests on dopes and

varnishes for aeroplane wings.

- See Barr, Guy, and W. R. G. Atkins: On the influence of acidity in the solvent.

- See Barr, Guy, and W. R. G. Atkins: Systematic examination of some dope

solvents.

Atlantic. Aerial circuit of Atlantic proposed.

Aerial Age, Vol. 10, No. 18 (Feb. 16, 1920), New York, p. 056.

- The first Atlantic flight.

Aeronautics, Vol. 19, No. 352 (July 15, 1920), London, p. 60.

- Trans-Atlantic airship transportation.

Aviation, Vol. 9, No. 7 (Nov. 1, 1920), New York, p. 224.

■- See Cossira, Henry: Un dirigeable a, traverse l'Atlantique en 1838 . . .

■- See Damblanc, Louis: Brest-New York en vingt heures.

- See Meteorology: Atlantic weather conditions.

- See R-38: The coming trans-Atlantic voyage of "R-38."

- See Richardson, Holden Chester: Some lessons of the trans-Atlantic flight.

- See Towers, J. H.: Great hop.

Atlantic City. Aeroplanes and motors exhibited at Atlantic City.

Aerial Age, Vol. 11, Nos. 11-12 (May 24-May 31, 1920), New York, pp. 359, 401, ill.

-■ Plane may not fly above boardwalk.

The Naviator, Vol. 1, No. 18 (June 12, 1920), Pensacola, Fla., p. 1.

- Twenty international and national aerial contests to be discussed at Atlantic

City, May 20 to May 30.

Air Fower, Vol. 6, No. 5 (May 1920), New York, p. 117.

- See Third Pan-American Aeronautic Congress: Notable gathering attends

opening of Third Pan-American Aeronautic Congress at Atlantic City.

Atlantic Fleet. The Atlantic Fleet and aircraft.

Klight, No. 029, Vol. 13, No. 2 (Jan. 13, 1921), London, p. 25.

Atmosphere. L'aéroplane à la conquête de la haute atmosphère.

La Nature, Suppl. 4S« année, 2« sem., No. 2421 (28 août 1920), Paris, p. 65.

- See Bilham, E. G.: The structure of the atmosphere over Benson (Oxon) on

3d March 1920.

- See Bjerknes, Vilhelm: The structure of the atmosphere when rain is falling.

- See Brunt, D.: Internal friction in the atmosphere.

- See Eblé, L.: Variabilité de la composition de l'atmosphère.

- See Fulsher, G. S.: Electrostatic effects on airships.

- See Meteorology: Use of aeroplanes for studying the atmosphere.

- See Richardson, Lewis F.: Some measurements of atmospheric turbulence.

- See Richardson, Lewis F.: The supply of energy from and to atmospheric

eddies.

-- See Meteorology.

Austin, Charles B. My attempted flight from Panama to Washington, D. C. U. S. Air Service, Vol. 4, No. 5 (Dec. 1920), New York, pp. 23, 30.

Austin, W. j. D. The Austin life boat.

Aerial Age, Vol. 13, No. 15 (June 20, 1921), New York, p. 350. Aviation, Vol. 11, No. 12 (Sept. 19, 1921), New York, p. 337, diagr. Flight, No. 646, Vol. 13, No. 19 (May 12, 1921), London, p. 331, ill.

Austin Motor Co. A visit to the Austin works.

Aeronautics, Vol. 18, No. 345 (May 27, 1920), London, p. 417.

Australia. An air force for Australia.

Aeronautics, Vol. 18, No. 326 (Jan. 15,1920), London, p. 6.

- Australia creates an air council and air board.

Flight, No. 634, Vol. 13, No. 7 (Feb. 17,1921), London, p. 113.

- The Australian flight.

The Aeroplane, Vol. 18, No. 3 (Jan. 21, 1920), London, p. 132.

■- The Australian pioneers at the Cecil.

Flight, No. 637, Vol. 13, No. 10 (Mar. 10, 1921), London, pp. 171-172, ill.'

- Aviation in Australia.

Aerial Age, Vol. 14, No. 7 (Oct. 24,1921), New York, p. 160. Flight, No. 666, Vol. 13, No. 39 (Sept. 29, 1921), London, p. 640. Flying, Vol. 10, No. 4 (May 1921), New York, pp. 131-132.

- Civil aviation in Australia.

Aerial Age, Vol. 12, No. 18 (Jan. 10, 1921), New York, p. 472; Vol. 13, No. 4 (Apr. 4), p. 88,

- Honouring the England-Australia air pioneers. Sir Ross Smith and Sir Keith

Smith.

Flight, No. 636, Vol. 13, No. 9 (Mar. 3,1921), London, pp. 150-151, ports.

- Lesson of the flight to Australia.-

Scient. Amer., Vol. 122 (Mar. 13, 1920), New York, p. 268.

The Naviator, Vol. 1, No. 6 (Mar. 20, 1920), Pensacola, Fia., p. 4.

- On advancing Australia.

The Aeroplane, Vol. 21, No. 7 (Aug. 17,1921), London, pp. 141-144, ill.

--The possibilities of aviation in Australia.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 25 (Dec. 22, 1920), London, pp. 929-932.

Australia. Sir Ross and Sir Keith Smith return to England.

Flight, No. 635, Vol. 13, No. 8 (Feb. 24, 1921), London, p. 126.

- See Commercial aeronautics: By air from London to Australia.

- See Commercial aeronautics: England to Australia flight.

- See Hendy, R. A.: Commercial aviation in Australia.

■-■ See Smith, Ross: Captain Smith wins 11,500-mile London-Australia flight.

- See Taylor, Griffith: Australian meteorology.

Austria. See Hildesheim, Erik: More German and Austrian aircraft.

- See Hildesheim, Erik: Some Austrian aircraft.

- See W. K. F.: The Austrian WKF sporting biplane.

Automatic pilot. See Aveline: The Aveline "automatic pilot." -- See Pilot: An automatic pilut.

Automobile engineer. The Automobile Engineer; a technical journal devoted, to the theory and practice of automobile and aircraft construction. London, 19—, Official organ of the Institution of Automobile Engineers.

Automobile materials. See Judge, A. W.: Aircraft and automobile materials of construction Vol. 1. Ferrous materials.

Autostable. See Sallard: The "Autostable" Sallard.

Aveline. The Aveline automatic airplane control.

Aviation, Vol. 10, No. 12 (Mar. 21,1921), New York, pp. 363-364, dlagr.

- The Aveline automatic pilot.

Aerial Age, Vol. 12, No. 26 (Mar. 7,1921), New York, pp. 656-658, 667,ill., diagr. Flight, No. 632, Vol. 13, No. 5 (Feb. 3,1921), London, pp. 73-75, ill.

- Der Aveline-Fluglagenregler.

111. Flug-Woche, 3. Jahrg., 17. Heft (17. Aug. 1921), Leipzig, pp. 348-349.

- The Aveline stabiliser.

Flight, No. 670, Vol. 13, No. 43 (Oct. 27, 1921), London,p. 704.

Avia. The Avia B. H. (exp.) 35-horsepower monoplane.

Flight, No. 643, Vol. 13, No. 16 (Apr. 21,1921), London, pp. 271-272.

Aviatik. See Hildesheim, Erik: Aviatik aeroplanes.

Aviation. Aviation after the war.

Aeronautics, Vol. 20, n. s., No. 387 (Mar. 17,1921), London, pp. 186-187.

- Disagreement over aviation.

Aircraft Journal, Vol. 6, No. 25 (June 21,1920), New York, p. 6.

- A few facts about aviation progress.

The Naviator, Vol. 1, No. 38 (Dec. 11, 1920), Pensacola, Fla., p. 1.

- The future of aviation.

Aerial Age, Vol. 14, No. 6 (Oct. 17,1921), New York, p. 123.

- Review of aviation in 1920.

Aerial Age, Vol. 12, No. IS (Jan. 10,1921), New York, pp. 459, 470.

Aviators. Aviators Jead dangerous lives.

The Naviator, Vol. 1, No. 38 (Dec. 11, 1920), Pensacola, Fla., p. 1.

- Observation, selection, and assignment.

Air Service Information Circular, Vol. 2, No. 120 (Oct. 30, 1920), Washington, pp. S.

- Why navigating personnel should be officers.

Aircraft Journal, Vol. 7; No. 7 (Aug. 10, 1920), New York, pp. 3-4.

Aviators. See B., H.: Héros disparus.

Aviette. La concours de l'aviette.

La Nature, Suppl., 48« année, 2» sem., No. 2417 (31 juil. 1920), Paris, p. 33, ill. Aviette Legay.

- See Peugeot prize: L'essor de 1'"Aviette." Le prix Peugeot gagné par Poulain.

Avionette. See Buckwald, H. M.: The Pischoff avionette.

- See Pischof: The Pischof 16-H. P. "Avionette."

Avions. En avion commercial au-dessus des Alpes bernoises.

Suisse Aérienne, 3e année, No. 14, 1921, Berne, pp. 204-205, ill.

- L'avion de demain.

Suisse Aérienne, 3« année, No. 14,1921, Berne, p. 206.

- Un avion de guerre.

L'Aéronautique, 2« année, No. 14 (juil. 1920), Paris, pp. 61-65, ill.

- Avion que se desprende de las alas.

Aire, Mary Tierra, ano 2, Num. 13 (abri] 1920), Madrid, pp. 210-213.

•- Les avions ininflammables.

Suisse Aérienne, 2= année, No. 19, (20 oct. 1920), Berne, pp. 292.

- Deux avions de vitesse pure.

Aéronautique, 35 année, Nos. 19-20 (Jan. 1921), Paris, pp. 291-292, ill.

- L'emploi des avions en Afrique pour les recherches d'ordre scientifique.

Suisse Aérienne, 2" année, No. 16 (25 août 1920), Berne, pp. 240.

--Un nouveau type d'avion pour l'aviation italienne.

Suisse Aérienne, 2« année, No. 22 (30 nov. 1920), Berne, pp. 335-336., iU.

•- See Besson.

- See Blériot.

- See Boccacio, Paul: Essais statiques des avions.

- See Bouché, Henri: La coupe Deutsch.

-- See Bréguet, Louis: Les avions Louis Bréguet.

- See Caudron.

- See Couturier, Roger: L'avion métallique en Allemagne.

- See Couturier, Roger: Quelques nouveaux types d'avions.

- See Dollfus, Charles: Sur quelques postes de commande des gouvernails

d'avions.

•-■ See Dorand: Comparaison entre les avions monoplans et biplans.

- See Ernoul.

- See Farman.

- See Frantzen, L. P.: Les parachutes d'avions.

- See Fréchet, Charles. L'avion-torpilleur.

- See Grimault, P.: Le vent sous l'aile.

- See Hanriot.

- See Henri-Paul.

- See Hirschauer, L.: De la valeur de l'avion comme engin de transport.

Avions. See Lallier, Roger: Le confort en avion.

- See Latécoere.

-• See Levasseur.

■- See Lioré et Olivier.

- See Marchis, L.: Les avions actuels et le Salon de L'aéronautique.

- See Morane-Saulnier.

- See Nieuport-Delage.

- See Pischof.

- See Plantey: Les avions sanitaires.

-• See Potez, Henry.

- See Sânchez-Besa.

- See Société d'Emboutissage et de Constructions Mécaniques.

- See Spad-Herbemont.

- See Stroh, H.: Avions navals et torpilles sous-marines.

- See Tampier.

- See Volmerange, A.: L'avion sans pilote.

- See Wibault, Michel.

Avoeio-Peassone kite balloon. See Ide, John Jay: The Avorio-Prassone kite balloon.

- See Kite balloons: The Avorio-Prassone kite balloon.

Avho. The Avro "Antarctic " two-seater baby seaplane.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 8 (Aug. 24, 1921), London, pp. 181-182, ill, diagr.

- The Avro "Baby" sport biplane.

Aerial Age, Vol. 11, No. 21 (Aug. 2, 1920), New York, p. 709, ill., diagr.

- Avro triplane, type 547.

Aerial Age, Vol. 11, No. 5 (Apr. 12, 1920), New York, pp. 152-153, ill.

- Avro-Verkehrsflugzeug Typ 547.

Flugwelt, 2. Jahrg., 7. Heft (31. März 1920), Leipzig, pp. 212-213, ill.

- Der neue Avro-" Antarctic "-See-Zweisitzer.

Iii. Flug-Woche, 3. Jahrg., 21. Heft (12. Okt. 1921), Leipzig, pp. 430-432, ill.

- A new Avro triplane.

Flight, Vol. 12, No. 10 (Mar. 4, 1920), London, p. 258-259, ill.

- Two-seater Avro "Baby" biplane.

Aeronautics, Vol. 19, No. 368 (Nov. 4, 1920), London, p. 326, ill.

-• Two-seater Avro "Baby" biplane, type 543. *

Flight, Vol. 12, No. 45 (Nov. 4, 1920), London, pp. 1145-1147, ill.

- Two-seater Avro Baby, type 543.

Aviation, Vol. 10, No. 11 (Mar. 14, 1921), New York, pp. 337-338. diagi.

- Das Zweimotoren-Flugzeug "Avro-Manchester, Mark II."

Flugwclt, 2. Jahrg., 9. Heft (28. Apr. 1920), Leipzig, p. 262.

- See Triplanes: A standardized triplane.

B.

B., 11. Au salon aéronautique de Londres.

L'Aéronautique, 2« année, No. 15 (août 1920), Paris, pp. 97-9S.

*

- Les avions.

L'Aéronautique, 2" année, No. 15 (août 1920), Paris, pp. 98-107, ill.

- Héros disparus.

Vie Aérienne, 1920, Paris, pp. 1031, 1049, 1199, ill.

- ' ' La grosse affaire. ' '

L'Aéronautique, le année, No. 11 (avr. 1920), Paris, pp. 465-466.

- Liquidons les stocks, si nous pouvons . . . mais liquidons a tout prix la question

des stocks.

L'Aéronautique, 2e année, No. 13 (juin 1920), Paris, pp. 1-2.

- Le sens d'un tour de force.

L'Aéronautique, 2« année, No. 13 (juin 1920), Paris, pp. 17-18., ill.

- Le tourisme aérien.

L'Aéronautique, 1" année, No. 10 (mars 1920), Paris, pp. 440.

B., R. To Paris by air.

The Aeroplane, Vol. 19, No. 8 (Aug. 25, 1920), London, p. 405.

B. M. W. The B. M. W. aero engines.

Aerial Age, Vol. 12, No. 1 (Sept. 13, 1920), New York, pp. 14-15,18, ill., diagr.

- See Germany: The German B. M. W. high-altitude engines.

- See Sparrow, S. W.: Performance of B. M. W. 185-horsepower airplane engine.

Baatz, Gotthold. Die Entwicklung des Seeflugzeugbaues im Kriege. Flugwelt, 2. Jahrg., 1. Heft (7. Jan. 1920), Leipzig, pp. 7-13, ill.

- Neuere See-Verkehrsflugzeuge.

III. Flug-Woche, 3. Jahrg., 14. Heft (6. Juli 1921), Leipzig, pp. 280-283, ill.

- Schwimmerflugzeug und Flugboot.

Luftweg, Jahrg. 4, Heft 42-43 (4. Nov. 1920), Berlin, pp. 2-9, ill.

- Seeflugverkehr über die Ostsee.

Flugwelt, 2. Jahrg., 8. Heft (14. Apr. 1920), Leipzig, pp. 241-244, ill.

Babb, C. Harding. Patrol of Oregon forests by DeHavilands during fire season of 1920.

Flying, Vol. 9, No. 11 (Dec. 1920), New York, p. 695, ill.

BaCo. The BaCo skylark.

Aviation, Vol. 10, No. 20 (May 16,1921), New York, pp. 626-628, ill.

Bacon, David Leonard. The advantages and limitations of model testing in wind tunnels.

U. S. Air Service, Vol. 5, No. 4 (May 1921), New York, pp. 30-31, ill.

- Langley Field wind tunnel apparatus.

Ç Technical Notes, National Advisory Committee for Aeronautics, No. 65, Oct. 1921, Wash-

ington (mim), pp. 4, ill. Aerial Age, Vol. 14, No. 10 (Nov. 14,1921), New York, pp. 225-226.

- Preliminary experiments to determine scale and slip stream effects on a l/24th

size model of a JN4H biplane.

National Advisory Committee for Aeronautics, Report No. 122, Washington, Government Printing Office, 1921, pp. 10, ill., diagrs.

- See Norton, Frederick Ilarwood, and I). L. Bacon: The optical wing-aligning

device of the Langley Field tunnel.

Bacon, David Leonard. See Norton, Frederick Harwood: The pressure distribution over the horizontal tail surface of an airplane.

- See Norton, Frederick Harwood, and D. L. Bacon: The tilting manometer.

Baden-Powell, B. F. S. Pioneers of British aviation—XXXV. Major B. F. S. Baden-Powell.

Aeronautics, Vol. 18, No. 337 (Apr. 1, 1920), London, p. 276, ill.

Bader, Hans Georg. Einführung in die Dynamik der Flugzeuge mit besonderer Berücksichtigung der mechanischen Aehniichkeit. Berlin, 1915, pp. 50.

Dissertation—Technische Hochschule zu Dresden.

- Die Entwicklung des Verkehrsflugzeuges.

Berlin, Gustav Braunbeck, 1920. ill.

Reviewed in: Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Hefte 7, 8 (30. Apr. 1920), Berlin, p. 110; Flugwelt, 2. Jahrg., 10. Heft (12. Mai 1920), Leipzig, p. 300.

-- Grundlagen der Flugtechnik, Berechnen und Entwerfen von Flugzeugen.

Leipzig, G. Teubner, 1920, pp. 194, ill.

Reviewed in: Flug, Sondernummer (Dez. 1920), Wien, pp. 127-128, ill.; Flug-Woche, 3 Jahrg., 17. Heft (17. Aug. 1921), Leipzig, pp. 359-360.

Reviewed in: Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 9. Heft (17. Mai 1921), München, pp. 137-138.

Badger, Charles J. See United States Congress. House. Committee on Naval Affairs: Naval policy of the United States.

Baeumker, A. Aufgaben, Ziele, Organisation der Luftfahrtvereiue. Flugwelt, 2. Jahrg., 5. Heft (3. März 1920), Leipzig, pp. 162-163.

- Der Kriegsluftfahrer im Vereinsleben.

Flugwelt, 2. Jahrg., 10. Heft (12. Mai 1920), Leipzig, pp. 280-283, ill.

- Luftbild und Vermessung.

Flugwelt, 2. Jahrg., 2. Heft (21. Jan. 1920), Leipzig, pp. 51-56; 3. Heft (4. Feb.), pp. 84-86, ill.

■- Männer der Luftfahrt—VII: Oberleutnant Ernst Udet . . .

Flugwelt, 2. Jahrg., 14. Heft (7. Juli 1920), Leipzig, pp. 374-375, port.

- Zum Jahreswechsel.

.Flugwelt, 2. Jahrg., 1. Heft (7. Jan. 1920), Leipzig, pp. 1-5.

Bagby, English. The psychological effects of oxygen deprivation.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 99, Ft. 3 (Aug. 15, 1820), Washington, Government Printing Office, pp. 16-21. Baltimore, Johns Hopkins Press, 1921, pp. 97-113.

- Psychopathology under low oxygen tension.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 3 (Mar. 15, 1920), Washington, Government Printing Office, pp. 39-43.

Bagnall-Wild, R. K. Some notes on aircraft steels and their inspection. Flight, Vol. 12, No. 45 (Nov. 4 1920), London, pp. 1157-1158.

Bailey, F. J. Airplanes in mine rescue work.

Coal Age, Vol. 17 (June 17, 1920), New York, pp. 1254-1255. Scient. Amer. Monthly, Vol. 1 (June 1920), New York, p. 547.

Bailey, G. C. The complete airman.

London, Methuon and Co., 1920, pp. 2s0, ill. New York, Van Nostrand, 1921, pp. 280, ill.

Baird, H. H. C. The Service Handbook. For those who have served. London, Office of the Ex-Service Man, 1920, pp. 133.

Baiestow, Leonard. Applied aerodynamics.

London and New York, Longmans, Green and Co., 1920, pp. xii, 566, diagr. Aeronautical Research.

Reviewed in: Aviation, Vol. 8, No. 8 (May 15, 1920), New York, pp. 326-327; Nature, Vol. 105, No. 2630 (Mar. 25, 1920), London, pp. 95-97. Noted in: L'Aérophile, 28« année. Nos. 11-12 (1"-15 juin 1920), Paris, p. xix.

Bairstow, Leonard, and E. F. Relf. Multiple-engined aeroplanes.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 308-310, diagr.

Bairstow, Leonard, E. F. Relf, and C. H. Powell. Notes on the performance of aeroplanes based on a reduction of the observations made at the Central Flying School during the acceptance tests of aeroplanes.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 383-102, diagr.

Bairstow, Leonard. Notes relating to the aerodynamics of aeroplane design. Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 290-302.

Bairstow, Leonard, and J. D. Coales. Notes on the prediction and analysis of aeroplane performance.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 592-620.

Bairstow, Leonard, and A. Face. Oscillations of the tail plane and body of an aeroplane in flight.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 461-467, diagr.

Bairstow, Leonard, R. H. Fowler, and D. R. Hartree. The pressure distribution on the head of a shell moving at high velocities.

Proc. Roy. Soc., Ser. A, Vol. 97, No. A684 (May 1, 1920), London, pp. 202-218, ill.

Bairstow, Leonard, and E. F. Relf. Proposals for experiments on aeroplanes in flight.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 302-307.

Bairstow, Leonard, A. Fage, and H. E. Collins. The relation between the efficiency of a propeller and its speed of rotation.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 296-311.

Bairstow, Leonard, E. F. Relf, and J. L. Nayler. The stability of airships. Mathematical theory and illustrations of its use.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 195-219, diagr.

Bairstow, Leonard, and R. Jones. The stability of an aeroplane which has springs in its control surface connections.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 249-254.

Bairstow, Leonard, E. F. Relf, and R. Jones. The stability of kite balloons: Mathematical investigation.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 222-235.

- Tests on a model kite balloon.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 45-48, diagr.

Bajac, Robert. See Blanchet, Georges: Aviateurs contemporains. Robert Bajac.

Bak elite. Bakelite for aeroplane propellers.

Aeronautics, Vol. 20, n. s., No. 381 (Feb. 3,1921), London, p. 84.

Baker, Cecil. Night flying.

Aeron. Journ., Vol. 24, No. 120 (Dec. 1920), London, pp. 627-649. Aeronautics Vol. 19, No. 368 (Nov. 4, 1920), London, pp. 323-325.

Baker, G. S., and G. H. Bottomley. Experiments with models of seaplane floats, 8th series.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 399-403, diagr.

Baker, G. S., and E. M. Keary. Experiments with models of seaplane floats. Tenth series.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 416-419, diagr.

- Experiments with models of seaplane floats. Eleventh series. Parts I and II.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 517-526, diagr.

-—• Experiments with models of seaplane floats. 12th series.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 1001-1010, diagrs.

—— Experiments with models of seaplane floats. Thirteenth series.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 1011-1014, diagrs.

Baker, G. S. Flying boat hulls.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 14 (Apr. 7, 1920), London, pp. 715-727, diagr.

——■ Flying boats—the form and dimensions of their hull.

Engineering, Vol. 109 (Mar. 5, 1920), London, pp. 323-327, ill., diagr.

Flight, Vol. 12, Nos. 10-12 (Mar. 4-18, 1920), London, pp. 270-272, 299-301, 319-321.

- Some notes on floats for seaplanes of the single float type. Fourteenth series.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 1015-1031, diagrs.

Baker, Horace R., and L. H. Butler. Commercial preparedness and the airship. Flying, Vol. 9, No. 6 (July 1920), New York, pp. 385, 402.

. Baker, Newton T. Secretary Baker commends Air Service report. TJ. S. Air Service, Vol. 4, No. 6 (Jan. 1921), New York, p. 20.

Baker, T. Y., and L. N. G. Filon. Position fixing in aircraft during long-distance flights over the sea.

London, Royal Aeronautical Society, 1920, pp. 24.

Balaban, Karl. Einiges über das Materialprüfwesen in Flugzeugfabriken.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 15., 16. Heft (15., 30. Aug. 1921), München, pp. 227-232, 241-247, ill.

-— Ueber die Festigkeit gelochter Zugblechte.

Flug, Jahrg. 1920, Nr. 5 (Mai), Wien, pp. 50-51, ill.

Balance. See Huget, L.: Aeroplane balance.

- See Hunter, Robert J.: Cultivating the balance sense: A prelude to cloud flying.

Balances. See Irving, H. B.: The design of aeroplane control surfaces, with special reference to balancing.

- See Kerber, L. V., and W. F. Gerhardt: A method for determining the angular

setting of a tail plane to give balance at any given condition.

- See Norton, F. H.: Design of recording wind tunnel balances.

- See Warner, E. P.: Notes on longitudinal stability and balance.

Baldit, Albert. Etudes élémentaires de météorologie pratique. Paris, Gauthior-Villars et Cie., 1921, pp. vii-347, ill.

Reviewed in: L'Aérophile, 29e année, Nos. 13-14 (1«-15 juil. 1921), Paris, p. xxviii.

- Sur certains cas de diminution de la vitesse du vent avec l'altitude.

Annuaire, Société Météorologique de France, T. 64, Fase. 1, 1920, Paris, pp. 1-29.

Baldwin cannon. Time study of the movement of the firing mechanism of the 37-mm. automatic Baldwin cannon (Cannon report No. II).

Air Sen-ice Information Circular (Heavier-than-air), Vol. 1, No. 10 (May 5, 1920), Washington, Government Printing Office, pp. 6, ill.

Balfour, D. Sewage treatment at English aerodromes.

Public Works, Vol. 49 (Aug. 28, 1920), Now York, pp. 197-198.

Ball, Albert. Memorial to Captain Ball, V. C.

Flight, No. 064, Vol. 13, No. 37 (Sept. 15,1921), London, p. 621.

Ball bearings. Skefko ball bearings.

Aeronautics, Vol. 19, No. 358 (Aug. 20, 1920), London, p. 170.

Ballast. See Barr, Guy: On obtaining ballast on an airship during flight by means of water from the motor exhaust.

Balleygnier, André. Le cadastre.

La Nature, 48» année, 2« Sem., No. 2413 (3 juil. 1920), Paris, pp. 7-15, 111.

Balloons. Les ballons captifs et les planeurs (cerfs-volants) au front belge. La Conq.. l'air, 3« année, No. 1 (1»' janv. 1920), Bruxelles, p. 12, ill.

- Ballooning for all. A cheap and easy apparatus.

Aeronautics, Vol. 19, No. 356 (Aug. 12, 1920), London, p. 133.

- Balloons instead of C. A. C. observation posts.

Aviation, Vol. 10, No. 4 (Jan. 24, 1921), New York, pp. 113-114, ill.

- The beacons of the front line.

Aircraft Journal, Vol. 7, No. 14 (Oct. 4, 1920), New York, p. 13, ill.

- Eine Ballonfahrt im Hochgebirge.

Suisse Aérienne, 3e année, No. 10,1921, Berne, pp. 137-140, ill.

—— False lift in free ballooning.

Journ. Soc. Automotive Engineers, Vol. 7, No. 1 (July 1920), New York, p. 109.

- Nurse balloons.

Aviation, Vol. 8, No. 11 (July 1, 1920), New York, p. 431, ill.

—— Riding the air in a balloon without a basket.

Scient. Amer., Vol. 123 (Oct. 30, 1920), New York, p. 447.

- See Boyle, James F.: Dilatable balloons.

- See Cannegiter, H. G.: Kabelballoons voor het indische leger.

- See Chollet, Léon: Les treuils de ballon captif.

- See Dollfus, Charles: Etude historique sur les projects de traversée de l'Atlantique en balloon.

- See Liefmann, Robert: Drei Ballonfahrten nach Frankreich.

- See Pröll, A.: Eine Alpenüberquerung im Ballon "Tirol."

- See Petschow, v. : Vom Freiballonsport.

- See Sumner, P. H.: The principle of the captive balloon. With reference to its

application for the mooring of airships.

- See Turner, C. C: Ballooning: Its use in science and sport.

Balloon gases. Plus de gaz; de l'air raréfié.

Suisse Aérienne, 3e année, No. 15-16, 1921, Berne, p. 231.

Baltic Aircraft work in the Baltic.

Flight, Vol. 12, No. 16 (Apr. 15, 1920), London, p. 430.

Baltimore. See Photography: Aerial photography of Baltimore.

Bamber. Het eerste Nederlandsche verkeersvliegtuit naar Engeland.

Vliegveld, 4de Jaarg., No. 21 (9 oct. 1920), 's-Gravenhage, pp. 355-357, ill.

Bamberg. New aviator's compass, the Bamberg telecompass.

Automotive Industries, Vol. 43 (Nov. 25, 1920), New York, p. 1058.

- See Compass: New aviator's compass, the Bamberg telecompass.

Bane. Colonel Bane on aircraft development.

Aviation, Vol. 10, No. 12 (Mar. 21, 1921), New York, pp. 360-362, ill.

Bane, Thdeman H. Illustrations of McCook Field.

Mechanical Engineering, Vol. 42, No. 1 (Jan. 1920), New York, pp. 32-33, ill.

- See United States Air Service (War Department): Handbook on the airplane,

machine-gun sights. McCook Field, Dayton, Ohio.

Banks, William. Aviation in Canada.

Aircraft Journal, Vol. 6, No. 19 (May 10, 1920), New York, pp. 3-4, ill.

Bakacca, Francesco. L'aeronauta Francesco Baracca. Rome, 1920, port.

Baratta, V. Risoluzione grafica di alguni problemi su palloni frenati.

II Nupvo Cimento, Vol. 17, Nos. 4-6 (apr.-giun. 1919), pp. 133-112, figs.

Barbillion et Dugit. Appareil simple permettant d'obtenir la mesure de la dérive à bord d'un aéronef.

Génie Civil, T. 79 (8 oct. 1921), Paris, pp. 314-315.

Barbillion. L'échelle rectiligne à divisions équidistantes appliquée à la mesure et à la division des angles et les appareils de mesure à sensibilité constante. Aéronautique, 3« année, No. 22 (mars 1922), Paris, p. 120.

Baring, Maurice. K. F. C, H. q., 1914-1916. London, G. Bell and Sons, 1920, pp. 315.

Barker, F. W. Invention in aeronautics.

Aviation, Vol. 8 (Mar. 1, 1920), New York, pp. 112-113.

Scient. Amer. Monthly, Vol. 1 (Mar. 1920), New York, pp. 202-204.

Barling. W. H., and J. D. H. Pritchard. The influence of time on the breaking load and elasticity of spruce members of aeroplanes.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 974-985, diagrs.

Barling, W. H. Short wooden struts.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 838-851, diagrs.

- Tapered struts.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. S52-S90, diagrs.

Barnard, W. N. U. S. Army school of military aeronautics at Cornell University. Sibley Journal of Engineering, Vol. 33 (June 1919), Ithaca, N. Y., pp. 63-65, ill.

Barnes, John K. The vindication of Squier and Deeds. What really happened to the billion-dollar aircraft appropriation.

World's Work, Vol. 42, No. 3 (July 1921), New York, pp. 300-306, diagr.

Barnes, P. J. Bombs by post.

U. S. Air Service, Vol. 4, No. 3 (Oct. 1920), New York, p. 32.

Barnhart. The Barnhart twin No. 15 "Wampus-Kat."

Aerial Age, Vol. 13, No. 26 (Sept. 5, 1921), New York, pp. 615-617, ill. Aviation, Vol. 11, No. 11 (Sept. 12, 1921), New York, pp. 309-311, ill.

Barnwell,,F. S. Aeroplane design.

Aeronautics, Vol. 20, n. s., Nos. 377-379 (Jan. 6-20, 1921), London,-pp. 12-13, 29-31, 49-50.

- Aeroplane design. Some present and future possibilities.

Aeronautics, Vol. 19, No. 376 (Dec. 30, 1920), London, pp. 466-467. Flight, No. 628, Vol. 13, No. 1 (Jan. 6, 1921), London, pp. 12-17, ill.

- Captain Barnwell on the technical aspects of aviation.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 17 (Oct. 27, 1920), London, pp. 706-710.

- Pioneers of British aviation—XXIX: Captain F. S. Barnwell, O. B. E., A. F. C.

Aeronautics. Vol, 18, No. 330 (Feb. 12, 1920), London, p. 139, ill.

44439—25-4

Barnwell, F. S. The technical aspects of service and civil aviation.

Proceedings of the Air Conference, 1920, with appendices, London, H. M. Stationery Office, 1920, pp. 77-92.

Aeronautics, Vol. 19, No. 366 (Oct. 21, 1920), London, pp. 290-292.

Engineer, Vol. 130 (Oct. 29, 1920), London, pp. 431-432.

Engineering, Vol. 110 (Oct. 22, 1920), London, pp. 529-530.

Flight, Vol. 12, Nos. 42, 45 (Oct. 14, Nov. 4,1920), London, pp. 1076-1077, 1155.

Flying, Vol. 9, No. 12 (Jan. 1921), New York, pp. 713-715, 712.

Barometer. Mercurial barometer for airships.

Aviation, Vol. 11, No. 20 (Nov. 14, 1921), New York, p. 572.

Barographs. Calibration of barographs used by Major Schroeder.

Journ. Soc. Automotive Engineers, Vol. 7, No. 1 (July 1920), New York, p. 102.

- See Altitude: Calibration of barographs used in airplane altitude measurements.

Barr, Guy. The deterioration of rubbered balloon fabrics under the action of light.

Tech. Eept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 541-561, ill., diagr.

- The extraction of valuable materials from "suint."

Tech. Kept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 453-456.

-• Hydrogen for airships and balloons.

Tech. Eept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 505-518.

- The liability to ignition of balloon fabrics.

Aviation, Vol. 8, No. 11 (July 1,1920), New York, pp. 43^436.

- Measurements to determine the stresses in an airship envelope.

Tech. Eept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 494-196.

Barr, Guy, and Edith G. Wilson. Note on a possible economy of solvent in doping aeroplane wings.

Tech. Eept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 1077-1079.

Barr, Guy, and E. A. Owen. Note relative to the weight of hydrogen.

Tech. Eept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 664-667.

Barr, Guy, and L. L. Bircumshaw. Notes on cellulose acetate.

Tech. Eept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 643-652.

Barr, Guy. On obtaining ballast on an airship during flight by means of water from the motor exhaust.

Tech. Kept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 519-526.

Barr, Guy, and W. R. G. Atkins. On the influence of acidity in the solvent. Tech. Eept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 451-452.

Barr, Guy. The permeability of balloon fabrics by helium.

Tech. Eept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 497-504, diagr.

- Preliminary experiments with methyl-ethyl-ketone.

Tech. Eept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 439-440.

Barr, Guy, and W. J. S. Naunton. Report of experiments on the cleaning of doped fabrics.

Tech. Kept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 490-493.

Barr, Guy, and W. R. G. Atkins. Systematic examination of some dope solvents. Tech. Eept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 456-472.

Barr, Guy, W. J. S. Naunton, and W. R. G. Atkins. Tests on dopes and varnishes for aeroplane wings.

Tech. Eept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 474-489.

Barb, Guy. Tropical exposure of airship fabric.

Aviation, Vol. 9, No. 1 (Aug. 1, 1920), New York, pp. 27-28.

Barb, Guy. Weathering and other testa on dopes containing acetone substitutes. Tech. Kept. Advis. Com. Aeronautics. 1915-16, London, 1920, pp. 440-451.

■-- See Atkins, W. R. G., and Guy Barr: Report on the use of dopes and fabrics in

Egypt.

- See Rosenhain, W., and G. Barr: Report on examination of Short's hydrogen

detector.

Bartlett, Alice Hunt. The transcontinental air mail.

Flying, Vol. 9, No. 8 (Sept. 1920), New York, pp. 504-505. Poem.

Bartlett, J. L. Rigid airships.

Aeron. Journ., Vol. 25, No. 127 (July 1921), London, pp. 357-377, ill.

Bascule. Air mail uses bascule door hangar. -

Aviation, Vol. 10, No. 21 (May 23,1921), New York, pp. 666-667, ill.

Basser, Gustav. Männer der Luftfahrt—XIII.

Flugwelt, 2. Jahrg., 22. Heft (27. Okt. 1920), Leipzig, pp. 538-539, port.

Bassler, R. E. Aeronautical index, May, 1920.

Aircraft Technical Note No. 184, Department of the Navy, Bureau of Construction and Repair, Washington, July 15, 1920, pp. 12.

Bat-boat. An American amphibian.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 19 (May 12, 1920), London, pp. 949-950, ill., diagr.

Battleships. Battleships and aircraft.

Engineer, Vol. 133, No. 3457 (Mar. 31,1921), London, p. 355.

Batwing. Batwing plane, war mystery ship, to make flight.

Rlustrated World, Vol. 34 (Oct. 1920), Chicago, p. 244, ill. ,

- Stout batwing type of airplane.

Automotive Manufacturer, Vol. 62, No. 5 (Aug. 1920), New York, p. 29.

- See Stout monoplane: The Stout "Batwing" monoplane.

Bateman, Harry. . . . Diagrams of airplane stability.

National Advisory Committee for Aeronautics, Report No. 95, Washington, Government Printing Office, 1920, pp. 25, diagrs.

- Stability of the parachute and helicopter.

Fifth annual report of National Advisory Committee for Aeronautics, Washington, 1920, pp. 781-789.

National Advisory Committee for Aeronautics, Report No. 80, Washington, Government Printing Office, 1920, pp. 11.

Battle, George Gordon. Medals for service in war. The provisions of the Pell bill. U. S. Air Service, Vol. 3, No. 1 (Feb. 1920), New York, pp. 19-21, ill.

Baudisch, Hans. Bemerkungen zur Flugtheorie von Dr. Nimführ.

Zeit. Osterr. Ing. Arch. Ver., 69. Jahrg., Heft 9 (2. März 1917), Wien, pp. 155-157, ill.

Bauer, G. Die helmholtzsche Wirbeltheorie für Ingenieure. München und Berlin, R. Oldenbourg, 1919, pp. 146, 111.

Reviewed in: Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 4 (28. Feb. 1920), Berlin, p. 58.

Bauer, L. H. Why civilian air pilots should be licensed by the Federal Government.

Flying, Vol! 10, No. 3 (Apr. 1921), New York, pp. 101,116.

Bauer, W. C. Aeromarino eight-cylinder B-type motor.

Aviation, Vol. 8, No. 1 (Feb. 1, 1920), New York, pp. 23-24, diagr., ill.

Batjmann, Alexander. Die Entwicklung der Riesenflugzeuge und ihre Bedeutung für den Luftverkehr.

Zeitschr. Flugt. Motorluftseh., 11. Jahrg., Heft 3 (14. Feb. 1920), Berlin, p. 37.

- Die Entwickelung des deutschen Riesenflugzeugbaues während des Krieges.

Zeitschrift Vereines Deutscher Ingenieure, Bd. 63, 64, Nrs. 51, 4, 5, 6 (Dec. 1919, Jan. 24, 31, Feb. 7, 1920), pp. 1275-1281, 78-S3, 112-116, 129-134, figs.

- Die Kosten der Luftreise.

Zeitschr. Flugt. Motorluftseh., 12. Jahrg., 2. Heft (31. Jan. 1921), München, pp. 17-20; Heft 3 (15. Feb.), pp. 33-35; 7. Heft (15. Apr.), pp. 97-100.

- Männer der Luftfahrt—XIV.

Flugwelt, ?. Jahrg., 24. Heft (24. Nov. 1920), Leipzig, pp. 578-579, port.

- Progress made in the construction of giant airplanes in Germany during the war.

National Advisory Committee for Aeronautics, Technical Notes, No. 29, Washington, 1920, pp. 11.

Resume translated from the German by Paris Office, N. A. C. A.

- Untersuchung der Querstabilität und Seitenstabilität auf graphischem Weg.

Zeitschr. Flugt. Motorluftseh., 12. Jahrg., 14. Heft (30. Juni 1921), München, pp. 212-220.

- Das Verkehrsflugzeug.

Flug, Sondernummer (Dez. 1920), Wien, pp. 66-71.

Baumhauer, A. G. v. Berkel marine eendekker, type W. B.

Vliegveld, 5. Jaarg., No. 7 (26. maart 1921), Amsterdam, pp. 98-100, ill.

•- Ontwerp verkeersvliegtuig voor overzeeverbindingen.

Vliegveld, 4de Jaarg., No. 26 (18 dec. 1920), 's-Gravenage, pp. 433^137, ill.

Baxendale, A. S. Flying and its outlook from a postal telegraph point of view. Discovery, No. 6, June 1920, London, pp. 172-174.

Bayer, A. Die Umstellung der deutschen Flugzeugindustrie.

Luftweg, Nr. 15-16 (21. Apr. 1921), Berlin, pp. 113-116; Nr. 17-18 (1. Mai), pp. 132-135.

Bazett, Henry Cuthbert. See Great Britain. Privy Council. Medical Research Council: The medical problems of flying . . .

Beach. The Beach helicopter.

U. S. Air Service, Vol. 3, No. 2 (Mar. 1920), New York, p. 20.

Beach, Stanley Yale. Soaring and gliding experiments in Germany. Aviation, Vol. 11, No. 1 (July 4, 1921), New York, pp. 13-14, ill.

Beams. Deflection of beams on nonuniform section.

Aerial Age, Vol. 13, No. 23 (Aug. 15,1921), New York, pp. 543-546.

Bear, R. M. See Zahm, Albert Francis, and R. M. Bear: Ground-plane influence on aeroplane wings.

Beardmore. Beardmore peace-time aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 16 (Apr. 21, 1920), London, pp. 816-823, diagr.

- See Amphibians: Beardmore 10-passenger amphibian flying boat, W. B. 9.

Beardmore Aero Engine (Ltd.). See Great Britain: Modern British engines.

Bearings. See Norton, Frederick Harwood . . . The efficiency of small bearings in instruments of the type used in aircraft.

Beatty, I. J. Lincoln motor production plan.

Factory, Vol. 24 (Feb. 15-Apr. 15, May 15-June 1, July 1, 1920), Chicago, pp. 440442, 623-626, "93-796, 967-970, 1144-1147, 1547-1549, 1705-1707.

Beauchamp-Proctor, Andrew W. Dtath of Flight Lieutenant Beauchamp-Proctor. Flight, No. 653, Vol. 13, No. 26 (June 30, 1921), London, p. 444. "

Becerril, Benjamín. La aviación futura. •

Tohtli, año 6. Núms. 1 y 2 (enero y febrero 1921), México, pp. 1-2.

-■ Dirigibles militares.

Tohtli, año 5, Núm. 2 (sept. 1920), México, pp. 51-53.

- Entrenamiento físico de los aviadores.

Tohtli, año 5, Núm. 3 (oct. 1920), México, p. 85.

- Ligeros apuntes sobre el empleo de los hidroplanos para la vigilancia y defensa

de las costas en nuestra república.

Tohtli, año 5, Núm. 2 (sept. 1920), México, p. 37.

Béchereau. Quelques opinions de competences.

Vie Aérienne, No. 194 (29 juil. 1920), Paris, p. 1243, ill.

Beck, W. A. New lifting element.

Scientific American Monthly, Vol. 2 (Nov. 1920), New York, pp. 285-286, diagr.

Becker, A. E. Future of airplane development.

Aircraft Journal, Vol. 6, No. 4 (Jan. 24, 1920), New York, pp. 6-7.

Bedell, Frederick. The airplane. A practical discussion of the principles of airplane flight.

New York, D. Van Nostrand Co., 1920, pp. 257.

Reviewed in: Aeronautical Journal, Vol. 25, No. 121 (Jan. 1921), London, p. 2; Science, n. s., Vol. 53, No. 1362 (Feb. 4,1921), p. 119.

—■— Airplane characteristics.

New York, D. Van Nostrand Co., 1920, pp. 123.

Bee farmer. See Agriculture: Bee farmer uses airplane.

Beese-Boutard, Melli. Unser Flugplatz—in Memoriam.

Luftweg, Nr. 17-18, 19-20, 23-24 (5, 19. Mai, 6. Juni 1921), Berlin, pp. 138-139, 151-152, 179184, ill.

Beggs, A. H. Thomas-Morse mail plane.

Sibley Journal of Engineering, Vol. 34 (Apr. 1920), Ithaca, pp. 44-45, ill.

pq ELAiEW, H. T. The structure of steel.

Aeronautics, Vol. 19, Nos. 368-370 (Nov. 4-18, 1920), London, pp. 329-330, 347-349, 358.

Belfast. Aeroplanes and the King's visit to Belfast.

Flight, Vol. 13, No. 26, No. 653 (June 30,1921), London, p. 439.

Belgium. Belgian colonial aviation.

Aviation, Vol. 10, No. 15 (Apr. 11,1921), New York, p. 469.

- See Commercial aeronautics: England-Belgium air service.

•- See Questier, E.V.: Air transport in Belgium.

Bell, Alexander Graham. Nuevo hidroplano americano.

Aire, Mar y Tierra, año 2, Núm. 13 (abril 1920), Madrid, pp. 175-176, ill.

■-■ See Nutting, William Washburn: The "HD-4." A 70-miler with remarkable

possibilities developed at Dr. Graham Bell's laboratories on the Bras d'Or Lakes.

Bellak, Paul. Das Flugwesen nach dem Kriege.

Mitt. Ostcrr. Aero-Clubs, Nr. 11-12 (1. Nov.-l. Dez. 1916), Wien, pp. 162-163, 1S2-1S5.

Bellanca. Bellanca announces five-seater.

Aerial Age, Vol. 12, No. 24 (Feb. 21, 1921), New York, p. 613, ill.

Bellinger and Hartz. Commander Bellinger and Colonel Hartz ask Senate investigation of conspiracy against them.

Flying, Vol. 9, No. 6 (July 1920), New York, pp. 398-399.

Bellini-Tosi. Direction and position finding. The Bellini-Tosi system. Aeronautics, Vol. 18, No. 337 (Apr. 1, 1920), London, p. 2S3.

Bello, Carlos. La fotografía y la aviación.

Tohtii, año 5, Num. 2 (sept. 1920), Héxico, p. 65.

Bencke, Albert. Die wirtschaftliche und technische Stellung der französischen Flugzeugindustrie.

Flugwelt, 2. Jahrg., 4. Helt (is. Feb. 1920), Leipzig, pp. 97-99, ill.

Bexdeiiann, F. Die Flugzeugprüfban der deutschen Versuchsanstalt für Luftfahrt und über den Luftschraubenantrieb für Eisenbahnfahrzeuge.

Zeitschr. Flugt. Jlotorluftseh., 11. Jahrg., 17., is. Heft (15., 30. Sept. 1920), Berlin, pp. 245-252, 261, ill.

Benn Brothers. Solving the transport problem. Benn Brothers institute a new service. A weekly journal and a freight exchange.

Aeronautics, Vol. 19, No. 369 (Nov. 11, 1920), London, p. 33s.

- See Commercial aeronautics: Solving the transport problem. Benn Brothers

institute a new service. A weekly journal and a freight exchange.

Benn, Ernest J. P. American efficiency: Can we stand against it? Aeronautics, Vol. 20, n. s., No. 402 (June 30, 1921), London, p. 479.

- Business as usual.

Aeronautics, Vol. 20, n. s., No. 393 (Apr. 28,1921), London, p. 301.

- The consumers' fourteen points.

Aeronautics, Vol. 20, n. s., No. 391 (Apr. 14, 1921), London, p. 263.

- The cost of costing systems.

Aeronautics, Vol. 19, No. 374 (Dec. 16, 1920), London, p. 437.

•-■ The end of the E. P. D.

Aeronautics, Vol. 20, n. s., No. 3s2 (Feb. 10,1921), London, p. 102.

- Labour at the cross roads.

Aeronautics, Vol. 20, n. s., No. 3s3 (Feb. 17,1921), London, p. 120.

- The outlook for 1921.

Aeronautics, Vol. 20, n. s., No. 378 (Jan. 13,1921), London, p. 24.

- The reduction of wages.

Aeronautics, Vol. 20, n. s., No. 3s2 (Feb. 10,1921), London, p. 93.

- The revolution in America.

Aeronautics, Vol. 21, n. s., No. 406 (July 28,1921), London, p. 75.

- Work without labour.

Aeronautics, Vol. 21, n. s., No. 404 (July 14,1921), London, p. 25.

Benn, Wedgwood. Scope of the R. A. F.

Aeronautics, Vol. is, No. 336 (Mar. 25, 1920), London, p. 264. •

Bennewitz, Kurt. Airplane flight instruments.

Aviation, Vol. 9, No. 11 (Nov. 29, 1920), New York, pp. 346-348, diagr.

Benson, S. F. See Andrews, S. T. G., and S. F. Benson: Aeroplane design.

■- See Andrews, S. T. G., and S. F. Benson: Theory and practice of aeroplane

design.

- See Tinker, Clifford Albion: Admiral Benson and the merchant marine.

Bentivegni, Richard v. Die Grundlagen des Luftverkehrs. Flug, Sondernummer (Dez. 1920), Wien, pp. 43^9.

- Luftverkehr und Riesenflugzeuge.

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Hefte 7 u. 8 (30. Apr. 1920), Berlin, pp. 97-102.

■—— Riesenflugzeuge.

Flugwelt, 2. Jahrg., 17., is. Heft (1920), Leipzig, pp. 445-447, 479-482, 500-504, 541-544,561-66«, ill.

Bentivegni, Richard v. Das Signalwesen im nächtlichen Luftverkehr.

111. Flug-Woche, 3. Jahrg., 5., 6. u. 9. Heft (2,16. März, 27. Apr. 1921), Leipzig, pp. 84-85, 108109, 170-172.

—— Zur wirtschaftlichen Entwicklung des Luftverkehrs!

Iii. Flug-Woche, 3. Jahrg., 15. Heft (20. Juli 1921), Leipzig, pp. 283-285, ill.

Benz. See Heller, A.: Der 300 Ps-FIugmotor von Benz & Cie., A. G., Mannheim.

- See Hildesheim, Erik: New series Vee type German Benz aero engines.

- See Hildesheim, Erik: Recent Benz aero engines.

- See Manifolds: Tests on Liberty, Benz, and Mercedes engine manifolds.

Benzine tank. Ein amtliches Zeugnis über Humannbenzinbehälter.

Hl. Flug-Woche, 3. Jahrg., 15. Heft (20. Juli 1921), Leipzig, p. 314, ill.

Benzol. Benzol for air engines.

Aeronautics, Vol. 20, n. s., No. 393 (Apr. 28, 1921), London, p. 290.

- See Fuel: Benzol as an engine fuel.

- See Raberts, E. W.: Power characteristics of 20 per cent benzol mixture.

Berardi. Onoranze a Berardi.

L'Aeronautica, anno 3, Num. 1 (marzo 1920), Borna, pp. 55-56, ill.

Béréhare, E. Les matériaux de constructions mécaniques et aéronautiques. Paris, Dunoud, 1920.

Reviewed in: Aéronautique, 3« année, No. 31 (dec. 1921), Paris, p. 524.

- See Masméjean, A., et E. Béréhare: Les moteurs à explosion dans l'aviation,

Tome II: Généralités sur les moteurs d'aviation. Les moteurs rotatifs.

Berg. Der österreichische Berg-Einsitzer.

Flugwelt, 2. Jahrg., 24. Heft (24. Nov. 1920), Leipzig, pp. 601-602, ill.

Bergeatjx, Raoul. Une simple mission spéciale et quelques mois d'Orient.

Vie Aérienne, No. 164 (1« janv. 1920), Paris, pp. 848-849; No. 165, p. 876; No. 166, p. 908; No. 175, p. 1042.

Berger, F. Les toiles.

Suisse Aérienne, 3» année, 1921, No. 10, Berne, p. 146.

Berger, Josep Viktor. Glossen zum Luftverkehr.

Flug, 8. Jahrg., Nr. 17-18 (Sept. 1921), Wien, pp. 29-32.

- Ingenieur Adolf Kraut.

Flug, 8. Jahrg., Nr. 19-20 (Okt. 1921), Wien, p. 24.

- Die Nimführsche Segelflugmaschine.

Flug, 8. Jahrg., Nr. 11-12 (1. Mai 1921), Wien, pp. 19-20.

•- Wien, das Herz des europäischen Luftverkehrs.

Flug, 8. Jahrg., Nr. 17-18 (1. Sept. 1921), Wien, pp. 24-25, ill.

- Wien im Luftverkehr.

Flug, Sondernummer (Dez. 1920), Wien, pp. 25-29, ill.

Berkel. Der neue holländische See-Eindeeker von "van Berkels patent." iii. Flug.-Woche, 3. Jahrg., 8. Heft (13. Apr. 1921), Leipzig, pp. 148-149, ill.

Berline Spad-Herbemont. See Lémonon, E.-H.: Les avions nouveaux en France, La Berline Spad-Herbemont S-33. Moteur Salmson 50 IIP., 6 places.

Berliner. The new Berliner helicopter.

Aviation, Vol. 10, No. 13 (Mar. 28, 1921), New York, p. 393, ill.

Berliner Luftverkehrsgesellschaft. Die Berliner Luft-Verkehrs-Gesellschaft. Flug, Jahrg. 1920, Nr. 5 (Mai), Wien, pp. 4s-49, ill.

Bermudas. Flying in the Bermudas.

Aeronautics. Vol. IS, No. 335 (Mar. 18, 1920), London, p. 245. Flight, Vol. 12, No. 12 (Mar. 18, 1920), London, p. 325.

Bernard, j. L., and L. E. Whittemore. Radio communication with postal aeroplanes.

Aerial Age, Vol. 13, Nos. 4-0 (Apr. 11-25, 1921), New York, pp. 105-106; 127-129, 139; 155-157, 163, ill., diagr.

Berry, Arthur. On the steady flight of an aeroplane, when the gradual loss of weight owing to the consumption of petrol is taken into account; with special reference to the minimum consumption of petrol.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 1163-1179, diagrs.

- See Garner, H. M., and Arthur Berry, On the torsion of a fusilage.

Bersey, W. C, and A. Dorey. The motor, marine, and aircraft Red Book, 1920. London, The Technical Publishing Co., 1920.

Berson, A. Die neuen Bestimmungen der F. A. I. für Rekordflüge. Luftweg, Nr. 8-9 (4. März 1920), Berlin, p. 11.

- Das Ultimatum und die deutsche Luftahrt.

Leftweg, Nr. 19-20 (19. Mai 1921), Berlin, pp. 145-146.

Bertea, Oscar. La chute de l'aviateur Bertea à Zurich.

Suisse Aérienne, 2« année, No. 17 (10 sep. 1920), Berne, pp. 257. ill.

Besson. The Besson triplane.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 24 (Dec. 14, 1921), London, p. 586, ill.

Besson, Marcel. Les hydravions Marcel Besson.

Aéronautique, 3« année, No. 30 (Nov. 1921), Paris, pp. 464-465, ill.

Bethlehem Aircraft Corporation. Bethlehem Aircraft Corporation " Skylark." Aerial Age, Vol. 13, No. 10 (May 16,1921), New York, pp. 226-228, ill.

Betz, A. Development of the inflow theory of the propeller.

National Advisory Committee for Aeronautics, Technical Notes No. 24, Washington, 1920, pp. 4, charts. ■

Resume translated from the German by Paris Office, N. A. C. A.

- Eine erweiterung der Schraubenstrahltheorie.

Zeitschr. Flugt. Motorluftseh., 11. Jahrg., Heft 7, 8 (30. Apr., 1920), Berlin, pp. 105-110.

■- Influence of span and load per square meter on the air forces of the supporting

surface.

Technical Notes, National Advisory Committee for Aeronautics, No. 41, (Mar., 1921), Washington, (mim.), pp. 7, diagrs. Aerial Age, Vol. 13, No. 10 (May 16,1921), New York, pp. 224-225.

- Wirbel und im Zusammenhang damit stehende Begriffe der Hydrodynamik.

Zeitschr. Flugt. Motorluftseh, 12. Jahrg., 13. Heft (15. Juni 1921), München, pp. 193-198.

Biber, P. Instrumente zur Geschwindigkeits- bzw. Volummessung gasförmiger und tropfbarflüssiger Körper.

Berlin, Nikolassee, 1921, pp. 32, ill.

Reviewed in: Zeitschr. Flugt. Motorluftseh, 12. Jahrg., 17. Heft (15. Sept. 1921) München, pp. 264.

Bibliography. Aeronautical book and magazine list, with references to principal documents and papers of historical interest.

Air Service Information Circular, Vol. 1, No. 21, 1920, U. S. War Department, Washington, D. C. 45 pp.

Bicycles. See Poulain, Gabriel: Poulain's air bicycle.

Bider, Oskar. Le Bidertag à Berne.

Suisse Aérienne, 3» année, No. 15-16,1921, Berne, pp. 219-224, ill.

Bidbr, Oskar. Ein Denkstein für Oskar Bider.

Suisse Aérienne, 3e année, No. 11,1921, Berne, pp. 156-157.

Bifilar. See Zahm, Albeit Francis: Bifilar windbalance.

Big ship. The big ship controversy.

Aviation, Vol. 10, No. 6 (Feb. 7,1921), New York, p. 168.

Bijur. Report of preliminary test of Bijur ignition end starting motor for Liberty "12."

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 22 (Mar. 31, 1920), Wash ington, Government Printing Office, pp. 3, ill., diagr.

--■ See Starters: Bijur aero engine starter.

- See Starters: Bijur automatic starter.

Bilham. E. G. The structure of the atmosphere over Benson (Oxon) on 3d March 1920.

Air Ministry, Meterological Office, Professional Notes No. 201, M. O. 245A, London, H. M. Stationery Office, 1921, pp. 8, ill., maps.

Bingham, Hiram. Airships in foreign trade.

Asia, Vol. 20 (Apr. 1920), New York, pp. 316-322, ill.

- Aviation and foreign trade.

Aircraft Journal, Vol. 6, No. 2 (Jan. 10, 1920), New York, pp. 5-6, ill.

- Colonel Bingham for separate air service.

U. S. Air Service, Vol. 2, No. 6 (Jan. 1920), New York, p. 12.

- An explorer in the air service.

New Haven, Yale University Press, 1920, pp. xiv, 260, ill.

—— Future of aviation.

Outlook, Vol. 124 (Apr. 7, 1920), New York, pp. 590-593.

U. S. Air Service, Vol. 5, No. 1 (Feb. 1921), New York, pp. 9-11, ill.

- Keeping fit for the air.

U. S. Air Service, Vol. 3, No. 5 (June 1920), New York/pp. 16-17, ill.

Binns, Jack. Cross-country in a flying boat. New York to Detroit over Niagara Falls in Aeromarine Navy cruiser opened up a veritable fairyland for aerial travel. U. S. Air Service, Vol. 5, No. 6 (July 1921), New York, pp. 23-25.

Biondi, Luigi. Esperienze in volo: la misura della depressione di bordo, in relazione

alia misura della quota conoscendo la pressione barometrica al suolo. L'Aeronautiea, anno 3, Num. 5-6 (luglio-agosto 1920), Eoma, pp. 211-215, ill.

■- Sulla misura delle reazioni dell' aria nel volo acrobatico e in aria agitata.

L'Aeronautiea, anno 3, Num. 1 (marzo 1920), Roma, pp. 48-51, ill.

Biplanes. See Bryant, L. W., and C. N. Jones. Biplane effect on R. A. F., 15-wing section.

- See Powell, C. H.: On the effect of cutting a hole in the top plane of a biplane.

Bircumshaw, L. L. See Barr, Guy, and L. L. Bircumshaw: Notes on cellulose acetate.

Bird flight. Old enigma of the soaring flight of the birds.

Current Opinion, Vol. 69 (Oct. 1920), New York, pp. 505-507, ill., map.

- Planes are faster even than pigeons.

The Naviator, Vol. 1, No. 5 (Mar. 13, 1920), Ponsacola, Fia., p. 8.

- Some notes regarding soaring birds.

Aerial Age, Vol. 14, Nos. 13-14 (Dec. 5-12, 1921), New York, pp. 305; 329.

- A widespread fallacy.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 5 (Feb. 2,1921), London, pp. 107-10S.

Bird flight. See Bollee, Leon: The soaring flight of birds. —— See Burrouglis, John: Flight of birds.

- See Clough, G. E.: Mystery of the soaring hawk.

- See Flanders, L. Howard: The flight of the albatross.

- See Landon, W. G.: That hawk again.

- See Lillienthal, Gustav: Der Segelflug der Vögel.

- See Perry, T. 0.: Paradoxical wind wheels and soaring birds.

- See Sayers, W. H.: The soaring flight of birds.

- See Warner, E. P.: Way of a bird in the air.

- See Wildeblood, H. S.: Soaring birds.

Biroer. See Silencer: A new silencer for aero engines. The Birger "Ad Astra."

Birle, G. Le XIP meeting de canots automobiles de Monaco. Gerne Civil, Vol. 76 (May 15, 1920), Paris, pp. 445-449.

Birley, James Leatham. See Great Britain. Privy Council. Medical Research Council: The medical problems of flying . . .

Bisbee, E. S. Airplanes in mining operations.

Engineering & Mining Journal, Vol. 109 (Feb. 14,1920), New York, p. 452.

- Pack train of eagles.

Seient. Amer. Monthly, Vol. 1 (June 1920), New York, pp. 544-546, ill.

Bishop, Percy. Characteristics of design affecting production, operation, and maintenance of aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 8 (Feb. 25, 1920), London, pp. 412-416. Aeron. Journ., Vol. 24, No. 112 (Apr. 1920), London, pp. 185-203. Aviation, Vol. 8, No. 8 (May 15, 1920), New York, pp. 319-323. Flight, Vol. 12, No. 8 (Feb. 19, 1920), London, pp. 216-219.

Bixetti, Olindo. Secondo gli alti intendimenti di S. E. chimienti. L'Aeronautica, anno 3, Num. 1 (marzo 1920), Roma, pp. 11-13.

Bjerknes, Vilhelm. The structure of the atmosphere when rain is falling. Quarterly Journal, Royal Meteorological Society (Apr. 1920), pp. 119-140.

Black, Archibald. Heat-treating of brazed fittings for aircraft.

Journ. Soc. Automotive Engineers, Vol. 6, No. 3 (Mar. 1920), New York, pp. 174-176. Amer. Mach., Vol. 52 (June 3, 1920), New York, pp. 1184-1186.

Black, Archibald, and D. R. Black. Italians adapt semirigid construction to large dirigible, the Roma.

Automotive Industries, Vol. 43 (Oct. 14, 1920), New York, pp. 758-759, ill., diagr., plan.

Black, D. R. See Black, A., and D. R. Black: Italians adapt semi-rigid construction to large dirigibles.

Blackburn. The Blackburn for the India flight.

Flight, Vol. 12, No. 19 (May 6, 1920), London, p. 498.

- The Blackburn "Swift" torpedo plane.

Aerial Age, Vol. 12, No. 22 (Feb. 7, 1921), New York, p. 566. Aeronautics, Vol. 19, No. 376 (Dec. 30, 1920), London, p. 465.

- See Wings: Commercial utility wing. An interesting Blackburn development.

Blackburn Aeroplane and Motor Co. (Ltd.). See Great Britain: Modern British aircraft.

Blake, E. Selected studies in elementary physics; a handbook for the wireless student and amateur.

London, The Wireless Press, Ltd., 1920, pp. 181.

Blake, W. T. ("Wing Adjutant"). Preparation of aerodromes.

Aeronautics, Vol. 18, No. 328 (Ian. 29, 1920), London, pp. 106-107.

- Wind, weather, and civil flying.

Contemporary, Vol. 117 (May 1920), New York, pp. 706-708.

Blanchard, Maurice. Étude sur les coques d'hydravions.

L'Aérophile, 28° année, Nos. 7-8 (ler-15 avril 1920), Paris, pp. 98-103, ill.

Blanchet, Georges. Aéronautes contemporains. Yves Périsse.

L'Aérophile, 29« année, Nos. 13-14 (1»--1„ Juil. 1921), Paris, pp. 103-104, port.

-■ Aviateurs contemporains. André Wateau.

LAéropbile, 29» année, Nos. 15-16 (l»f-15 août 1921), Paris, pp. 225-226, port.

- Aviateurs contemporains. Arondel.

L'Aérophile, 29» année, Nos. 21-22 (1"—15 nov., 1921), Paris, p. 321, port.

—— Aviateurs contemporains. Guy de Montjou.

L'Aérophile, 29» année, Nos. 7-8 (le'-15 avril 1921), Paris, p. 97, port.

- Aviateurs contemporains. Paul-Louis Weiller.

L'Aérophile, 29» année, Nos. 9-10 (1«-15 mai 1921), Paris, pp. 129-130, port.

- Aviateurs contemporains, René Fonck.

LAérophile, 29» année, Nos. 11-12 (le'-15 juin 1921), Paris, pp. 161-162, port.

-• Aviateurs Contemporains. Robert Bajac.

L'Aérophlie, 29» année Nos. 17-18 (1™—15 sept. 1921), Paris, pp. 257-258, port.

- Ceux qui disparaissent Alfred Leblanc.

L'Aérophile, 29« année, Nos. 23-24 (1«'-15 déc. 1921), Paris, p. 371, port.

- Un éclatant succès pour la technique française: l'avion à surface, courbure et

incidence variables.

LAérophile, 28« année, Nos. 22-23 (1«-15 nov. 1920), Paris, pp. 321-325.

■-• Gustave Delage.

L'Aérophile, 29» année, Nos. 5-6 (l«r-15 mars 1921), Paris, pp. 65-66, port.

- La VIIe exposition de la locomotion aérienne. L'organizateur du Salon André

Granet.

L'Aérophile, 29» année, Nos. 23-24 (1»-15 déc. 1921), Paris, p. 355, port.

- Le Liore-Olivier bi-moteur militaire.

L'Aérophile, 28» année, Nos. 7-8 (1«-15 avril 1920), Paris, p. 119, ill.

- Nos nouvelles aviatrices.

L'Aérophile, 28» année, Nos. 7-8 (1»'-15 avril 1920), Paris, p. 118, ill.

- La première exploitation des lignes Méditerranéennes. "L'Aéronavale."

L'Aérophile, 28» année, Nos. 5/6 (1™-15 mar. 1920), Paris, pp. 78-79.

Blecker-Kohlsaat, Edgar. Des deutschen Knaben Fliegerbuch Stuttgart, Union deutsche Verlagsgesellschaft, 1921, 99 ill.

Reviewed in: III. Flug-Woehe, 3. Jahrg., 25. Heft (7. Dez. 1921), Leipzig, p. 519.

Bleininger, Albert V. Preparation and composition of ceramic bodies for spark plug insulators.

Fifth annual report of National Advisory Committee for Aeronautics, Washington, 1920, pp. 101-107.

Blériot. The Blériot mammouth. »

Aviation, Vol. 8, No. 1 (Feb. 1, 1920), New York. p. 13, ill.

- Les nouveaux avions de "Blériot-Aéronautiquo" . . .

Aéronautique, 3« année, No. 30 (nov. 1921), Paris, pp. 436-437, ill.

Bi.ériot. Prix de sécurité Blériot.

L'Aérophile, 28« année, Nos. 13-14 (1"-15 juil. 1920), Paris, pp. 200.

Bleyhoeffer, B. Entwicklung des Luftfahrtwesens in China. Luftweg, Nr. 39-40 (6. Okt. 1921), Berlin, pp. 285-286, ill.

Blimp. Birth of the "Blimp."

Flight, Vol. 12, No. 40 (Sept. 30, 1920), London, p. 1038.

- See Commercial aeronautics: Pony blimp for commercial use.

Bliss, E. W. Note on the upper air at Helwan, Egypt, based on observations of pilot balloons.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, vol. 3, London, 1921, p. 1133.

Block system. Aeronautic roads—block system.

Aerial Age, Vol. 14, No. 16 (Dec. 26, 1921), New York, pp. 373-374.

Blondel, André. On the goniometric functions applicable to directive aerials. Radio Review, Vol. 1, Nos. 1-3 (Oct.-Dec. 1919), pp. 1-10, 58-66, 110-123, figs.

- Sur une méthode pour la mesure de la transparence atmosphérique.

C. R. Acad. Sei., T. 170 (12 jan. 1920), Paris, pp. 93-97. An adaptation of the Lummer Brodhun.

Blume, W. Das Segelflugzeug.

Zeitschr. Flugt. Motorluftsch, 12. Jahrg., 21. Heft (15. Nov. 1921), München, pp. 313-316, ill.

- Das Segelflugzeug der akademischen Fliegerabteilung der technischen Hochschule Hannover.

III. Flug-Woche, 3. Jahrg., 24. Heft (23. Nov. 1921), Leipzig, pp. 492-495, ill.

Boats, flying. See Nicolson, David: Flying boat construction.

Boccacio, Paul. Essais statiques des avions.

L'Aéronautique, 2= année, No. 17 (oct. 1920), Paris, pp. 190-195, ill.

Bodensee. See Hensley, Wm. C: America and airship transportation. Col. Wm. C. Hensley's experiences on the "Bodensee" and his conclusions.

- See Hildesheim, Erik: A trip on the "Bodensee."

- See Upson, Ralph H.: The Bodensee commercially profitable. Postwar conditions in German aerial transportation.

Bodies, airplane. See Design: Latest designs in airplane bodies.

Böhm, Alois Robert. 250 Aufstiegstage vor dem Feinde.

Mitt. Österr. Aëro-Clubs, Nr. 8 (1. Aug. 1916), Wien, pp. 90-95, ill.

Boerner. Achtung— Boerner!

Aut. Flugv., Nr. 8 (Aug. 1921), Berlin, p. 301.

- See Koreuber: Das Boerner-Luftschiff.

Böttinger, Henri Theodor v. H. Th. v. Böttinger.

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 12 (30. Juni 1920), Berlin, p. 169, port.

Bogert, George Gleason. Problems in aviation law. Ithaca, Cornell University, 1921, pp. 39.

Boilève, M. Application de la résistance des matériaux au calcul des avions. Paris, Gauthier-Villars & Cie., 1921, pp. viii, 242, ill.

BoissEL, André. L'aviation maritime.

Vie Aérienne, 5« année, No. 1 (5« août 1920), Paris, pp. 3-4, ‘11.

-x Le superdreadnought " Béarn " . . .

Vie Aérienne, 5« année, No. 20 (18 déc. 1920), Paris, p. 314, ill.

Boland, Adrienne. Le record féminin de hauteur.

L'Aérophile, 28 année, Nos. 15-16 (1«-15 août 1920), Paris, p. 235.

Boland, Adrienne. See Blanchet, Georges: Nos nouvelles aviatrices.

Bolivia. First flight in Bolivia.

Aircraft Journal, Vol. 6, No. 22 (May 31, 1920), New York, p. 3.

-U. S. officer organizes air service in Bolivia.

Aircraft Journal, Vol. 6, No. 26 (June 28, 1920), New York, p. 12.

Bollee, Leon. The soaring flight of birds.

Aerial Age, Vol. 12, No. 16 (Dec. 27,1920), New York, p. 421.

Bölling, Raynall Cawthorne. See Gorrell, Ev S.; and Phil. Carroll: Colonel Ray-nal Cawthorne Boiling. Lawyer-cavalryman-flyer.

Bolshevik. Bolshevik aerial developments.

The Aeroplane, Vol. 20, No. 22 (June 1, 1921), London, pp. 499-500.

Bomb rack. See Reif, B. F., and R. Jones: Tests on the drag of a model bomb rack fitted to R. E. 8 machine.

Bombing. Aerial bombardment manual.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 54 (May 21, 1920), Washington, Government Printing Office, pp. 12.

- Aerial bombing tests now historic. General Pershing, Acting Secretary Roosevelt, and Secretary Weeks sign report on results with conclusions reached by the joint board.

U. S. Air Service, Vol. 6, No. 1 (Aug. 1921), New York, pp. 19-21.

- The Alabama bombing tests.

Aerial Age, Vol. 14, No. 3 (Sept. 26, 1921), New York, p. 63.

- Army and Navy board reports on bombing tests.

Aerial Age, Vol. 13, No. 25 (Aug. 29, 1921), New York, p. 583.

- The Army and Navy bombing tests.

Aerial Age, Vol. 23, No. 11 (May 23, 1921), New York, pp. 253, 262.

——• Aviators to bomb ex-German warships in tests.

Aerial Age, Vol. 13, No. 1 (Mar. 14, 1921), New York, p. 8.

- Battleships and bombs.

U. S. Air Service, Vol. 5, No. 1 (Peb. 1921), New York, pp. 7-8.

■-■ Battleships to be bombed.

Aviation, Vol. 10, No. 11 (Mar. 14,1921), New York, pp. 328-330, ill.

- Bombing at Aberdeen.

Aviation, Vol. 11, No. S (Aug. 22, 1921), Now York, pp. 227-228, ill.

- Bombing of warships proves air power.

Aviation, Vol. 11, No. 4 (July 25, 1921), New York, pp. 96-98, ill.

■-■ Bombing raid on eastern cities. Sham attacks for practice on New York, Washington, and other cities.

Aviation, Vol. 11, No. 6 (Aug. 8,1921), New York, pp. 160-161.

——■ Bombing tests and our naval policy.

Scient. Amer., Vol. 125 (Aug. 6,1921), New York, p. 90.

- Bombing tests of the U. S. S. Alabama.

Aviation, Vol. 11, No. 14 (Oct. 3,1921), New York, pp. 390-397, ill.

- Bombing tests of warships on June 21.

Aviation, Vol. 10, No. 23 (June 6,1921), New York, p. 714.

—■— Bombing the Alabama.

Aerial Age, Vol. 14, No. 4 (Oct. 3, 1921), New York, p. 85.

- Bombing the old battleship Indiana.

Scient. Amer., Vol. 123 (Dec. 4, 1920), New York, p. 575, ill.

Bombing. Bombing the radio-controlled Iowa.

Aerial Age, Vol. 13, No. 13 (June 6,1921), New York, p. 303.

- Bombs or torpedoes.

Aviation, Vol. 11, No. 9 (Aug. 29, 1921), New York, p. 256.

- Depth-bombing from the air; results and lessons of the sinking of the Frankfurt

and Ostfriesland off the Virginia coast.

Sclent. Amer., Vol. 125 (Aug. 6,1921), New York, pp. 92-93.

--■ The famous bombing chart.

Aviation, Vol. 10, No. 13 (Mar. 28, 1921), New York, p. 393, ill.

- Final plans for bombing tests.

Aerial Age, Vol. 13, No. 12 (May 30,1921), New York, p. 270.

- Is it to be bomb or battleship? Elaborate series of tests to determine the

effectiveness of aircraft against warships.

Scient. Amer., Vol. 125, No. (July 2,1921), New York, pp. 4-5, ill., plans.

- Largest airplane bomb weighs 3,000 pounds.

Pop. Meeh., Vol. 34, (Nov. 1920), New York, p. 730, ill.

- Limitations of aerial bombing.

Scient. Amer., Vol. 125 (July 2,1821), New York, p. 2.

- Navy makes aero-bomb test.

The Naviator, Vol. 1, No. 38 (Dec. 11, 1920), Pensacola, Ha., p. 1, ill.

- Ostfriesland sunk by 2,000-lb. aircraft bombs.

Aviation, Vol. 11, No. 5 (Aug. 1,1921), New York, pp. 128-132, ill.

-■ On bombs, battleships, and things.

The Aeroplane, Vol. 21, No. 11,13 (Sept. 14, 28, 1921), London, pp. 229-231, 269-270.

- Report of joint Army and Navy board on bombing and ordnance tests.

Aerial Age, Vol. 13, No. 26 (Sept. 5,1921), New York, pp. 614-615.

- Report on bombing tests.

Aviation, Vol. 11, No. 10 (Sept. 5,1921), New York, pp. 276-278, ill.

—■— Schedule of the bombing tests.

Aviation, Vol. 11, No. 1 (July 4,1921), New York, pp. 8-12, ill. U. S. Air Service, Vol. 5, No. 5 (June 1921), New York, p. 8.

- The IT. S. bombing tests.

Flight, No. 640, Vol. 13, No. 13 (Mar. 31,1921), London, p. 230.

■-• See Barnes, P. J.: Bombs by post.

■-• See Borden, W. A.: 4,000-pound demolition bomb; a means for detonating 2,000

pounds of T. N. T. on a selected target.

■-• See Ewell, Arthur W.: A plea for aerial bombing.

■—— See Ewell, Arthur W.: Testing aerial bombs.

•-■ See Fullam, W. F.: Admiral Fullam on the Alabama tests.

-• See Guidoni, A.: A new system of bombing tests.

- See Murrelle, J. H.: Recent bombing operations.

- See Navy: The naval bombing tests.

- See R., F. A. de V.: Bombing the Mahsuds.

- See Ray, A. B.: Incendiaries in modern warfare; aircraft bombs.

- See Sperry, Elmer Ambrose: What the Virginia Capes aircraft bombing shows.

- See Taylor, G. I.: The Wilbur Wright lecture. Scientific methods in aeronautics.

Bombing. See United States: The U. S. aerial bombing experiments on -warships.

- See Wilson, Edwin Bidwell: Bomb trajectories.

-■ See Wimperis: Wimperis course-setting bomb sight.

Bonneatj-Le Prieub. Le gyroclinomètre lumineux Bonneau-Le Prieur. L'Aérophile, 29 année, Nos. 11-12 (1«-15 juin 1921), Paris, p. 165, ill.

Bonnier, Lotus. L'aéronautique et la vie sociale.

Aéronautique, 3« année, No. 30 (nov. 1921), Paris, pp. 430-431).

Boone, H. New radio method guides airplanes through darkest night.

Illustrated World, Vol. 34 (Sept. 1920), Chicago, pp. 29-32, ill., diagr.

Booth, Harris. Aeroplane performance calculations.

London, Chapman & Hall, and New York, E. P. Dutton & Co., D. TJ. Technical Series, 1921, pp. xv, 207, diagrs.

Reviewed in: Aëron. Journ., Vol. 25, No. 128 (Aug. 1921), London, pp. 455-456.

- The design of spars with offset pin joints.

Aeron. Journ., Vol. 24, No. 118 (Oct. 1920), London, pp. 563-574.

Booth, H. O. See Stanton, T. E., H. O. Booth, and Dorothy Marshall: On the effect of surface roughness on the heat transmitted from hot surfaces to fluids flowing over them, with special reference to the case of the gills of an air-cooled engine.

Borah, William E. Senator Borah wants N. A. C. A. abolished. Introduces resolution transferring N. A. C. A. duties to existing Government departments. Aviation, Vol. 10, No. 26 (June 27,1921), New York, p. 800.

Borck, Hermann. Die Abhängigkeit des Propellerwirkungsgrades vom Anstellwinkel des Propellerblattes.

Zeitsehr. Flugt. Motorlultseh., 11. Jahrg., Helt 21 (15. Nov. 1920), Berlin, pp. 313-314.

- Die Möglichkeit des Schraubenflugzeuges.

Zeitsehr. Flugt. Motorlultseh., 11. Jahrg., Heft 14 (31. Juli 1920), Berlin, pp. 207-209, ill.

Borden, William A. Air bombing of industrial plants.

Journal of the Army Ordnance Association, Vol. 1, No. 3 (Nov.-Dec. 1920), Washington, pp. 122-125, ill.

Significance in war and probable future developments.

- 4,000-pound demolition bomb; a means for detonating 2,000 pounds of T. N. T.

on a selected target.

Scient. Amer., Vol. 125A (Dec. 1921), New York, pp. 94-95, ill.

Borel. Avion de chasse Borel, 1920.

L'Aérophile, 28 année, Nos. 13-14 (1»-15 juil. 1920), Paris, pp. 199-200, ill.

Bornecque, Henri and René de Valforie . . . Les ailes dans la bataille. Paris, Hachette, 1920, pp. viii, 224, ill.

Borneo. See Roberts, E. W.: Power characteristics of Sumatra and Borneo gasoline.

Boston. Flying boat opens Boston service.

The Naviator, Vol. 1, No. 18 (June 12, 1920), Pensacola, Fia-, p. 5.

Boston, Charles A. See American Bar Association.

Bothezat, George de. The actual state of the helicopter problem.

Aerial Age, Vol. 13, No. 11 (May 23, 1921), New York, pp. 247-249.

- Airplane performance as influenced by the use of a super charged engine.

National Advisory Committee for Aeronautics, Technical Notes No. 2, Washington, 1920, pp. 6, chart.

Aerial Age, Vol. 12, No. 6 (Oct. 18, 1920), New York, pp. 174, 179, charts. Aeronautics, Vol. 18, No. 349 (June 24, 1920), London, pp. 481-182. Flight, Vol. 12, No. 36 (Sept. 2,1920), London, pp. 961-962, diagr.

Bothezat, George de . A few remarks concerning some fundamentals of the theory of blade screws.

Aeron. Journ., Vol. 24, No. 119 (Not. 1920), London, pp. 595-600, diagr.

- General theory of the steady motion of an airplane.

National Advisory Committee lor Aeronautics, Report No. 97. Washington, Government Printing Office, 1921, pp. 70, diagrs.

- Introduction a "L'étude des lois de la résistance de l'aile" . . .

Aéronautique, 3» année, No. 21 (lev. 1921), Paris, pp. 93-96.

- An introduction to the study of the laws of air resistance of aerofoils.

National Advisory Committee for Aeronautics, Report No. 28, Washington, Government Printing Olïïce, 1920, pp. 75, diagr.

- La notion de trainee induite; ses fondements théoriques.

Aéronautique, 2« année, No. 13 (juin 1920), Paris, pp. 39-41, ill.

- Sur le rendement d'un tunnel aérodynamique.

Aéronautique, 3» année, No. 23 (avr. 1922), Paris, pp. 158-160, ill.

Bott, Alan ("Contact"). Eastern nights and flights; a record of oriental adventure. London, Blackwood and Co., 1920, pp. 323.

Bottomley, G. H. Experiments with models of seaplane floats. Eleventh series. Part III. The wave formation produced by a seaplane of the single float type. Tech. Rept. Advis. Com. Aeronautics, 1917-18, vol. 3, London, 1921, p. 1032-1037, ill.

- See Baker, G. S., and G. H. Bottomley: Experiments with models of seaplane

floats. 8th series.

Bouché, Henri. Les applications de la photographie aérienne; carte et cadastre, agriculture, travaux publics.

Bull. Soc. Enc. Ind. Nat., 119 année, T. 132, No. 1 (jan.-fév. 1920), Paris, pp. 122-123.

- La coupe Deutsch.

Aéronautique 3e année, No. 29 (oct. 1921), Paris, pp. 386-393, ill.

- L'enseignement aéronautique en Allemagne.

Aéronautique, 3<= année, No. 24 (mai 1921), Paris, pp. 185-186.

-• Images aériennes.

Aéronautique, 3e année, No. 22 (mars 1921), Paris, pp. 105-107, ill.

- La navigation aérienne et le droit international.

Aéronautique, 3« année, No. 24 (mai 1921), Paris, pp. 216-220.

—— La photographie aérienne et la vie agricole: cadastre et remembrement; agronomie et agriculture.

Aéronautique, 3a année, No. 21 (fév. 1921), Paris, pp. 71-76, ill.

- La photographie aérienne, arme de guerre, outil de la paix.

Bull. Soc. Enc. Ind. Nat., 119 année, T. 132, No. 4 (juil.-août 1920), Paris, pp. 464-488, ill.

•—■— La photographie aérienne et la restauration des provinces dévastées. Aéronautique, 1« année, No. 12 (mai 1920), Paris, pp. 525-529, ill.

- Le septième salon de l'aéronautique.

Aéronautique, 3" année, No. 31 (dêc. 1921), Paris, pp. 489-492, ill.

-• Vérités premières sur la stabilité.

Aéronautique, 2" année, No. 17 (oct. 1920), Paris, p. 205.

Bouchenot, R. L'envol d'un avion.

Aéronautique, 3» année, No. 28 (sept. 1921), Paris, pp. 375-377.

Boulton, B. C. Design of standard lugs.

Aerial Age, Vol. 12, No. 25 (Feb. 28, 1921), New York, pp. 634-637, ill., diagr.

- Experimental reinforced plywood truss ribs.

Aerial Age, Vol. 13, Nos. 23, 25 (Aug. 15, 29, 1921), New York, pp. 539-541, 591-594, ill., diagr.

Boulton, B.C., and H. M. Peiest. The graphical method for the deflection of beams of nonuniform section.

Aerial Age, Vol. 11, No. 1 (Mar. 15, 1920), New York, pp. 17-19, diagr.

Boulton, B. C. The manufacture and use of plywood and glue. London, Sir Isaac Pitman and Sons, Ltd., 1920, pp. S8.

Boulton, B. C, and R. L. Hankinson. Properties of woods at 10 per cent moisture.

Aerial Age, Vol. 12, No's. 1, 2 (Sept. 13, 20, 1920), New York, pp. 11-13, 30, 43-44, charts.

Boulton, B. C. The structural analysis and design of the aeroplane.

Aerial Age, Vol. 11, Nos. 21-23 (Aug. 2-16, 1920), New York, pp. 710-712, 742-744, 775-777, diagr.

Boulton, B. C, and A. S. Niles. Structural analysis and design of aeroplanes. Aerial Age, Vol. 12, No. 18 (Jan. 10,1921), New York, pp. 469-470.

Boulton, B. C. See Gerhardt, W. F., B. E. Boulton, and L. V. Kerbor: Preliminary choice of a wing section.

Boulton. B. C. See Niles, A. S., and B. C. Boulton: Location of interplane struts.

Boulton and Paul. A Boulton and Paul silencer.

Aeronautics, Vol. 20, n. s., No. 392 (Apr. 21, 1921), London, p. 27S.

- The Boulton & Paul commercial machine.

Aerial Age, Vol. 11, No. 9 (May 10,1920), New York, pp. 290-292, ill., diagr.

- Das "Boulton and Paul P-9"- Flugzeug.

Flugwelt, 2. Jahrg., 14. Heft (7. Juli 1920), Leipzig, pp. 385-387, ill.

- The Boulton and Paul P-10 all metal two-seater, general purpose biplane.

Engineering Division Air Service, Technical Orders No. 14 (Mar. 1920), Dayton, Ohio, pp. 83-86, ill.

■- De Boulton and Paul tweedekker P-10.

Avia, 8e jaarg., No. 7 (15 mai 1920), Rotterdam, pp. 77-78, ill.

- See Great Britain: Modern British aircraft.

Bourdon, M. W. Cosmos radial airplane engine designed in England.

Automotive Industries, Vol. 42 (June 10, 1920), New York, pp. 1314-1319, ill., diagr.

- Napier aero engine with new arrangement of cylinders.

Automotive Industries, Vol. 41 (Nov. 20, 1919), New- York, pp. 1006-1012, ill., diagr.

Bourke. The Bourke turbine propeller.

Aeronautics, Vol. 21, n. s., No. 403 (July 7, 1921), London, p. 15.

Bourke, A. M. A new propeller.

Flight, No. 648, Vol. 13, No. 21 (May 26, 1921), London, p. 306. Flanges or fins attached to both front and back of the blades.

Bousquet, M. L'hélice aérienne et le halage des bateaux sur les voies navigables. (Groupe propulseur Lamblin.)

La Nature, 48 année, 2'- sem., No. 2420 (21 août 1920), Paris, pp. 123-126, ill.

Bowden. Bowden petrometer; device which registers the fuel consumption on a motor vehicle or airplane.

Mechanical Engineer, Vol. 42 (Oct. 1920), New York, p. 586, diagr. Scient. Amer. Monthly, Vol. 2 (Oct. 1920), New York, pp. 1S7-1SS.

Bowdler, Archibald Penrhyn. see Great Britain. Privy Council. Medical Research Council: The medical problems of flying . . .

Bowen, Frank C. The new British seaplane carrier Hermes. Rudder, Vol. 35, No. 12, (Dec. 1919), pp. 549-550.

Boyd, James Ellsworth. Compressive strength of spruce struts. Aviation -Vol. 8, No. 11 (July 1, 1920), New York, p. 436.

44439—25-5

Boyd, James Ellsworth. Investigation of the compressive strength of spruce struts of rectangular cross section and the derivative formulas suitable for use in airplane design.

U. S. Bureau of Standards Technical Tapers, Vol. 152 (1920), Washington, D. C, pp. 1-43, ill.

Boyek, Jacques. Les aviateurs aux hautes altitudes et les «xpériences physiologiques de l'Institut Aérotechnique.

La Nature, 48 année, 2' soin., No. 2422 (4 sept. 1920), Paris, pp. 14S-I4S, ill.

- Les nouveaux appareils d'essais de l'Institut Aérotechnique de Saint-Gyr.

La Nature, 4S année, 2= sem., No. 2426 (2 oet. 1920), Paris, pp. 213-219,111.

Boykow, H. Der Kreisel im Flugzeug.

Luftweg, Jahrg. 4, Heft 36-37 (23. Sep. 1920), Berlin, pp. 7-8.

Boyle, James F. Dilatable balloons.

Aviation, Vol. 9, No. 6 (Oet. 16, 1920), New York, pp. 1S4-1S6, diagr.

- An improved A. P. kite balloon.

Aviation, Vol. 9, No. 3 (Sept. 1, 1920), New York, pp. 89-91, ill.

Bradford, Louis J. Failure of casein glue joints in ash.

Aerial Age, Vol. 12, No. 13 (Dec. 6, 1920), New York, pp. 340-347, diagr.

Bradley, W. F. Bennett cup winner uses novel cooling equipment.

Automotive Industries, Vol. 43 (Oct. 21, 1920), New York, pp. 803-805, ill., diagr.

--Developing a ground organization for civil aviation.

Automotive Industries, Vol. 45. No. 13 (Sept. 29,1921), New York, pp. 622-620, ill.

. — First post war aircraft exhibition held in France.

Automotive Industries, Vol. 42 (Jan. 1, 1920), New York, pp. 1-2.

- French rotary airplane engine uses a variable stroke,

Automotive Industries, Vol. 43 (Oct. 28, 1920), New York, pp. 862-803, diagr.

- Germany grimly hopeful for her aircraft industry.

Automotive Industries, Vol. 43 (Dec. 2, 1920), Now York, pp. 1101-1105,' ill.

- Lorraine-Dietrich production of airplane engines.

Automotive Industries, Vol. 42 (Feb. 12, 1920), New York, pp. 449-453, ill., diagr.

- Reflection of the Paris aero show..

Autocar, Vol. 44, No. 1263 (Jan. 3, 1920), London, pp. 3-11, figs.

Bragg. Caleb S. Contenders for Collier trophy should act now. 17. S. Air Service, Vol. 0, No. 5 (Dec. 1921), New York, p. 15.

Brakes. The automatic brake for aeroplanes.

Aerial Age, Vol. 14, No. 2 (Sept. 19, 1921), New York, p. 38, diagr. Flight, No. 658, Vol. 13, No. 31 (Aug. 4, 1921), London, p. 529, ill.

- Electromagnetic brakes for aeroplanes.

Aerial Age, Vol. 14, No. 3 (Sept. 26,1921), New York, pp. 54 , 57.

- See West, R. R.: Air brakes for aeroplanes.

Brancker, Sefton. Aerial transport from a business point of view. ASron. Journ., Vol. 21, No. 114 (June, 1920), London, pp. 294-312. Flight, Vol. 12, No. 19 (May 0, 1920), London, pp. 506-510.

•--More air transport figures. Sir Sefton Brancker on running costs.

Aeronautics, Vol. IS, No. 342 (May 6,1920), London, pp. 360-361.

Braun, Ludwig. Fallschirm und Fallschirmhose.

Mitt. Oesterr. Aëro-Clubs, 7. Jahrg., Nr. 8 (1. Aug. 1920) Wien, pp. 106-110, ill.

Brazil. Aviation in Brazil.

Aerial Age, Vol. 23, No. 6 (Apr. 18, 1921), New York, p. 136.

-■ The H. P. [Handley Page] services in Brazil.

Flight, Vol. 2, No. 4 (Jan. 22,1920), London, p. 115.

Brearley, Harry. The case-hardening of steel.

London, Longmans, Green & Co., 1921, pp. 218, ill.

Reviewed in: Aëron. Journ., Vol. 25, No. 128 (Aug. 1921), London, p. 455.

Bréguet. Breguet biplane—Type XX.

Aeronautics, Vol. 20, n. s., No. 381 (Feb. 3,1921), London, p. S4, ill.

- The Breguet commercial aeroplane, Model XTV.

Aerial Age, Vol. 10, No. 13 (Jan. 12, 1920), New York, p. 504, ill.

- The Breguet "Leviathan."

Aer. Eng., Suppl. The Aeroplane, Vol. 20, No. 7 (Feb. 16,1921), Loudon, p. 158, ill. Aerial Age, Vol. 13, No. 3 (Mar. 2S, 1921), New York, p. 62.

--A propos du Bréguet "Leviathan" . . .

Aéronautique, 3= année, Nos. 19-20 (Jan. 1921), Paris, pp. 236-287, ill.

--- See Fromentin, J.: Transports aériens et tourisme.

- See Fuselage: Breguet commercial airplane.

- See Lémonon, E.-H.: Le Bréguet "Leviathan" Type XX.

- See Lémonon, E. H.: Deux nouveaux appareils . . .

Bréguet, Louis. L'aviation d'hier et de demain.

LAérophile, 29» année, Nos. 17-18 (1«>--15 sept. 1921), Paris, pp. 265-272. Reviewed in: Aéronautique, 3« année, No. 31 (déc. 1921), Paris, p. 524.

- Les avions Louis Bréguet.

Aéronautique, 3« année, No. 30 (nov. 1921), Paris, pp. 438-439, ill.

- Les possibilités immédiates et prochaines de l'aviation. Tokio à un jour de

Paris. Declarations de M. Louis Bréguet au diner de la C. S. I. Aé. en l'honneur de la mission Japonaise.

LAérophile, 28 année, Nos. 5/6, (ler-15 mar. 1920), Paris, p. 74.

Breit, Gregory. The field radiated from two horizontal coils.

U. S. Bureau ol Standards. Scientific Papers, No. 431 (Mar. 10, 1922), Washington, Govi. Print. Off., 1922, pp. 589-606, diagrs.

Brennan, Louis. The Brennan helicopter.

Aerial Age, Vol. 13, No. 12 (May 30, 1921), New York, p. 280. Flight, No. 644, Vol. 13, No. 17 (Apr. 2S, 1921), London, p. 299.

Brenner, Leopold. Ein ideales Luftrettungsmittel: der Differentialsehinii.

Flug, Sondernummer (Dez. 1920), Wien, pp. 90-92. ,

Breton, A. Bateaux a propulsion hydro-aérienne.

La Nature, 48 année, No. 2134 (27 nov. 1920), Paris, pp. 351-352, ill.

Brewer, Griffith. The Langley machine and the Hammondsport trials. Aëron. Journ., Vol. 25, No. 132 (Dee. 1921), London, pp. 620-664, ill. Flight, No. 670, Vol. 13, No. 43 (Oct. 27, 1921), London, pp. 703-704, ill.

■- Langley machine and Hammondsport trials. Replies to Walcott, Zahm,

Manly, and Curtiss.

U. S. Air Service, Vol. 6, No. 5 (Dec. 1921), New York, pp. 26-29.

■- A new Langley controversy.

Aviation, Vol. 11, No. 19 (Nov. 7,1921), New York, pp. 532-534, ill.

- Some kite-balloon experiments.

Aëron. Journ., Vol. 24, No. 109 (Jan. 1920), London, pp. 16-30. Aviation, Vol. 8, No. 11 (July 1,1920), New York, pp. 441-414, diagr.

Brigos, A. W. Capt. A. W. Briggs.

The Ace, Vol. 2, No. 9 (June 1921), Los Angeles, p. 18, ill.

Bright, Charles. Telegraphy, aeronautics, and war.

London, Constable & Company, 1918, pp. xvii, 407, ill. Aëron. Journ., Vol. 25, No. 124 (Apr. 1921), London, p. 190.

Brion, Maurice. L'emploi du dérivoinètre dans le voyage aérien.

L'Aéronautique, 1» année, No. 10, (mars 1920), Palis, pp. 437-439, ill.

•- Le vol au moteur.

L'Aéronautique, 2« année, No. 17 (oct. 1920), Paris, pp. 205-207.

Briscoe, Mrs. Grace Maud. See Great Britain. Privy Council. Medical Research Council: The medical problems of flying . . .

Bristol. An American version of the Bristol fighter.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 15 (Apr. 13,1921), London, p. 354, diagr.

- The Bristol commercial ten-seàter biplane.

Flight, No. 654, Vol. 13, No. 27 (July 7,1921), London, pp. 457-45S, ill.

- A Bristol express passenger carrier.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 1 (July 6,1921), London, pp. 10-12, ill., diagr.

- The ''Bristol" gas starter for aero engines. A successful auxiliary engine.

Flight, No. 675, Vol. 13, No. 48 (Dec. 1,1921), London, pp. 802-803, ill.

- Bristol seaplane.

Engineer, Vol. 130 (Nov. 12, 1920), London, p. 488, ill., diagr.

- - The "Bristol" ten-seater airplane.

Aviation, Vol. 11, No. 8 (Aug. 22,1921), New York, pp. 229-230, ill.

- The "Bristol" ten-seater. General description.

Aeronautics, Vol. 21, n. s., No. 403 (July 7,1921), London, pp. 5-6, ill.

- The Bristol tourer seaplane.

Flight, Vol. 12, No. 44 (Oct. 28, 1920), London, p. 1126, ill.

•- Bristol-Verkehrsflugzeug, 450 PS Napier Lion.

Flugsport, 13. Jahrg., Nr. 15 (20. Juli 1921), Frankfurt, pp. 331-333, ill.

- First standardized aero engine mounting. Swivelling mount for Bristol

"Jupiter."

Flight, No. 66S, Vol. 13, No. 41 (Oct. 13, 1921), London, p. 672, ill.

---- Der 450 PS-Bristol-" Jupiter "-Flugmotor.

111. Flug-Woehe, 3. Jahrg., 9. Heft (27. Apr., 1921), Leipzig, pp. 168-169, ill.

- Het "Bristol" verkeersvliegtuig.

Vliegveld, 5e jaarg., No. 22 (22 oct. 1921), Amsterdam, pp. 300-301, ill.

- New "Bristol" tourer seaplane.

Aeronautics, Vol. 19, No. 367 (oct. 28, 1920), London, p. 306, ill.

- Tests of the 450-liorsepower Bristol Jupiter engine.

Aviation, Vol. 11, No. 24 (Dec. 12,1921), New York, pp. 685-686, ill.

- See Fromentin, J.: Les avions commerciaux Bristol.

Bristol Aeroplane Company. Single-engined ten-seater tractor biplane. Engineer, Vol. 132, No. 3420 (July 15,1921), London, pp. 73, ill.

- See Great Britain: Modern British aircraft.

Bristol "Babe." L'avion Bristol "Babe."

L'Aéronautique, 1« année, No. 12 (mai 1920), Paris, pp. 530, ill.

British. Ejemplos típicos de aparatos de aviación británicos.

Aeronautics, Vol. 21, n. s., No. 406 (July 28,1921), London, pp. 61-66, ill.

—— Quelques avions et quelques moteurs brittaniques.

Aeronautics, Vol. 21, n. s., No. 403 (July 7, 1921), London, pp. 7-12, ill.

British Aerial Trausport Co. B. A. T. "Baboon."

Aerial Age, Vol. 10, No. 19 (Feb. 23, 1920), New York, p. 69s, ‘11.

- Some "B. A. T." aeroplanes.

Flight, Vol. 12, No. 1 (Jan. 1, 1920), London, pp. 18-19, ill.

British Air Ministry competition. The small airplanes of the British competition. Aviation, Vol. 9, No. 6 (Oct. 15, 1920), New York, pp. 193-196.

British Engineering Standards Association, London. British schedule of valve and valve spring steel for aircraft.

London, published tor the Association by C. Lockwood & Son, 1920, pp. 17: Report No. 114.

- . . . British standard schedule of cold worked steels for aircraft.

London, published for the Association by C. Lockwood & Son, 1920, pp. 16, diagrs.: Report No. 112.

- . . . British standard schedule of sheet steels for aircraft.

London, published for the Association by o. Lockwood & Son, 1920, pp. 12, diagrs.: Report No. 113.

- . . . British standard schedule of wrought steels for aircraft.

London, published for the Association by C. Lockwood & Son. 1920, pp. 27, tables, diagrs. Report No. 111.

Brodetsky, S. The mechanical principles of the aeroplane. London, J. & A. Churchill, 1921, pp. vil, 272.

Reviewed in: Aeron. Journ., Vol. 25, No. 127 (July 1921), London, p. 378; Nature, Vol. 109, No. 2732 (Mar. 9, 1922), London, pp. 296-298.

Brooke-Popham. Aeroplanes in tropical countries.

Aeron. Journ., Vol. 25, No. 131 (Nov. 1921), London, pp. 563-580, map, tables.

Brooke-Popham, H. R. M. Some problems in aeronautical research.

Aeronautics, Vol. 20, n. s., No. 381 (Feb. 3,1921), London, pp. 80-81.

- Some problems in the design and operation of aircraft.

Flight, No. 638, Vol. 13, No. 11 (Mar. 17, 1921), London, p. 191.

Brooks, C, and others. Bumpiness in flying; effects of wind and other weather conditions on the flight of airplanes.

Scient. Amer. Monthly, Vol. 1 (Feb. 1920), New York. pp. 126-130, diagr.

Brooks, Charles F. Boundary between a south wind and an under-ruuuiug northeast wind.

Monthly Weather Review, Vol. 4S, No. 2 (Feb. 1920), Washington, p. 73.

- Effect of winds an 1 other weather conditions on the flight of airplanes.

Monthly Weather Review, Vol. 47, No. S (Aug. 1919), pp. 522-532, figs.

Brouwer, G. Zuiger-stoomwerktuigen.

Rotterdam, Ditn\;r's TJitgevers-Maatschappij, 1920.

Reviewed in: Vliegveld, 5e. jaarg., No. 3 (29 Jan. 1921), Amsterdam, p. 47.

Browmwich, T. J. I'a. The problem of random flights.

London, Edinburgh, and Dublin Philos. Mag., Vol. 42, No. 249 (Sept. 1921), London, pp. 432435.

Brown, Arthur Whittii^. Flying the Atlantic in 10 hours. New Y'ork, Frederick A. Stokes Co., 1920, ill.

Brown, F. C. How to make a heat balloon.

Illustrated World, Vol. 33 (July 1920), Chicago, pp. 925-92(1, diagr.

Brown, G. M. Carburetion as a prime factor in producing power. Aerial Age, Vol. 14, No. 10 (Nov. 14, 1921), New York, p. 227.

Brown, J. Wireless in aircraft.

Discovery, No. 10 (Oct. 1920), London, pp. 306-310, ill.

Brown, Robert J. Aerial bombing at Ellington Field. With sidelights on hedge-hopping in the Texas expeditionary forces.

u. S. Air Service, Vol. 6, No. 5 (Dee. 1921), New York, pp. 9-15.

Brown, Sidney G. Gyrostatic compass.

Royal Institution of Great Britain, Weekly Evening Meeting, Friday, Jan. 30, 1920, pp. 21,111.

Engineering, Vol. 109 (Feb. 13, 1920), London, pp. 202-206, ill., diagr.

Brown", W. B. See Dickinson, H. C, W. S. James, and W. B. Brown: General discussion of test methods for radiators. Browne, E. A. Vom grössten Verkehrsflugzeug Gmssbritannieus. Fing, Sondernummer (Dez. 1920), Wien, pp. 79-80.

Brückmann, W. Strahlungsmessungen in zwei Ballons.

III. Flug-Woche, 3. Jahrg., 9. Heft (27. Apr. 1921), Leipzig, pp. 171-175. Luftweg, Nr. 15-16 (21. Apr. 1921), Berlin, pp. 119-120.

Brünel, Charles. De la visibilité aux diverses hauteurs.

L'Aérophile, 2S année, Nos. 22-23 (1«-15 nov. 1920), Paris, pp. 337-338.

Brunner, Frank J. Flying squadron for National Guard.

U. S. Air Service, Vol. 6, No. 2 (Sept. 1921), New York, p. 13.

Brunopf, Maurice de. L'aéronautique pendant la guerre mondiale. Paris, M. de Brunofî, 1920, pp. viii, 735, ill.

Brunt, D. Internal friction in the atmosphere.

Quarterly Journal, Royal Meteorological Society (Apr. 1920), pp. 176-185.

- Tables of frequencies of surface wind directions and cloud amounts at Metz,

Mülhausen, Karlsruhe, and Frankfurt.

Air Ministry Meteorological Office, London, Professional Notes No. M, M. O. 240d, London, 1920, pp. 41.

Bryan, G. H. A mathematiciau on mathematicians and others.

A er. Eng. Suppl. The Aeroplane, Vol. is, No. 11 (.Mar. 17, 1920), London, pp. 567-570.

---- Some Mediterranean seaplanes.

Aviation, Vol. 9, No. 6 (Oct. 15,1920), New York, pp. 199-200.

- Bryant, L. W., and C. N. Jones. Biplane effect on R. A. F. 15-wing section.

Teen. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 1, Loudon, 1921, pp. 181-187.

Bryant, L. W., and H. B. Irving. Description of improved moments measuring apparatus for tests on models in the wind channel, with an appendix on the determination of corrections due to interference of apparatus on model. Tech. Rept. Advis. Com. Aeronautics, 1915-16, Loudon, 1920, pp. 32-36, diagr.

- Experiments on the effect of altering the position of the kinges of the elevators

for the B. K. 2c aeroplane.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 157-164, diagi-.

——- Investigation of the flow of air through the cowling of R. E. 7 aeroplane and of the résistance of a houeycomb radiator.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 372-381, diagr.

---On the cooling of a honeycomb radiator.

Tech. Kept. Advis. Com. Aeronautics, 1915-16, Lonclou, 1920, pp. 3S4-398, diagr.

--On the resistance of a houeycomb radiator.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 381-383.

- Report on an oil-cooling honeycomb radiator taken from a German Zeppelin.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 412-414.

- Tests of a model of F. E. 4 body and tail.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 191-200, diagr.

Bryant, L, W., and H. B. Irving. Tests of a mode! of F. B. 4 body with a modified tail system.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 200-203, diagr.

Bryant, L. W., H. B. Irving, and W. L. Cowley. Tests of a model seaplane.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 158-172, diagr.

Bryant, L. W., and H. B. Irving. Tests of the yawing moment on a model of th» B. E. 2c machine at small angles of yaw.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 204-205.

- Tests of vertical fin surfaces at the rear of different types of body.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 185-188, diagr.

- Tests on model ''Bristol" twin tractor biplane.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 116-149, diagr.

- Tests on two models of Caquot kite balloons.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 05-67, diagr.

Bue. Après le soleil de Bue.

L'Aéronautique, 2<-- année, No. 16 (sept. 1920), Paris, pp. 177-17S.

--Le meeting aéronautique de Bue.

L'Aéronautique, 2« année, No. 16 (oct. 1920), Paris, pp. 181-185, ill. L'Aérophile, 2s» année, Nos. 19-20 (1«'-15 oct. 1920), Paris, pp. 291-296, ill.

Buchanan, James N. A comparison of two methods of applying prism tests to the eyes.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 3 (Mar. 15, 1920), Washington, Government Printing Office, pp. 5S-62, diagr.

Buckwald, H. M. Atmospheric data.

Aeronautics, Vol. 19, No. 372 (Dec. 2, 1920). London, p. 395, Vol. 20, n. s., No. 377 (Jon. 6, 1922), London, p. 8.

- Tho new variable surface airplane.

Aviation, Vol. 9, No. 10 (Nov. 22,1920), New York, pp. 314-316, ill.

- The Oddy variable pitch and reversing propeller.

Aerial Age, Vol. 12, No. 11 (Nov. 22, 1920), New York, p. 299, ill.

- The Pischoff avionette.

Aviation, Vol. 10, No. 4 (Jan. 24, 1921), New York, pp. 106-107, ill.

--The Rateau turbo-campressor.

Aviation, Vol. 10, No. 3 (Jan. 17,1921), New York, pp. 73-76, ill.

Budoets. Foreign air budgets.

Flight, No. 675, Vol. 13, No. 43 (Dec. 1,1921), Loudon, p. 806.

--U. S. Air Service budgets for 60 million dollars.

Flight, No. 630, Vol. 13, No. 3 (Jan. 20, 1921), London, p. 49.

Budig, Friedrich. Arbeitsleistung vermittelst geringer Druckunterschiede.

Zeitschr. Flugt. Motorlnftsch., 11. Jahrg., Heft 23, 24 (31. Dez. 1920), Berlin, pp. 343-3)4.

- Sichtbare stabilisierung von Luftfahrzeugen.

Zeitschr. Flugt. Motorlufsch., 12. Jahrg., 2. Heft (31. Jan. 1921), München, pp. 22-26.

Buenos Aires. See Commercial aeronautics: Aerial service between Buenos Aires and Pernarabuco.

Büttner, Alexander. Bemerkungen zum Segelflugwettbewerb in der Rhön.

Mitt. Oestcrr. Aéro-Clubs, 7. Jabrg. Nr. 9-10 (1. Scpt.-Okt. 1920), Wien, pp. 131-131.

- Die Flugplatzfrage.

Mitt. Oesterr. Aëro-Clubs, G Jahrg. Nr. 7 (1. Juli 1919), Wien, pp. 204-206.

■- Luftbildnerei einst und jetzt.

Mitt. Osterr. Aëro-Clubs, 5. Jahrg., Nr. Ii (1. Jnni IMS), Wien, pp. 1s2-1ss, ill.

Büttner, Alexander. Kin ucites Reiselhigzeug.

Flugwelt, 2. Jahrg., 8. Heft <ll. April 1920), Leipzig, pp. 2.17-24(1, ill.

---Die notlandung: ein baud buck für Flieger.

Berlin, R. K. Schmidt & Co., pp. ISO, ill.

Reviewed in: Zeitschr. Fingt. MotorluUsch., 11. Jahrg., 10 Heft (31. Mai 1920) Berlin, p. 140.

Das Postflugzeug.

Mitt. Oeslerr, Aero-Clubs, 6. Jahrg., Nr. 3 (1. Miirz 1919), Wien, pp. 76-7s

- Das Presseproblem.

Luftweg, Xr. 11-42 (20. Okt. 1921), Berlin, p. 297.

- Die Sicherheit des Fliegeiis. Rück- und Ausblicke.

Milt. Oeslerr. Aero-Clubs, 7. Jahrg., Xr. 6-7 (1. Juni-Juli 1920), Wien, pp. 95-98.

- Warum versagt Imglands Luftwehr?

Mitt. Oesterr. Aero-Clubs, 5. Jahrg., Xr. 4 (1. Mai 191s), Wien, pp. 165-167.

- Die wirtschaftliche Ausnützung der Luftbildtechnik.

Mitt. Oesterr. Aero-Clubs, 7. Jahrg., Xr. 5 (1. Mai 1920), Wien, pp. 69-76, ill.

- Die Zukunft des Flugzeugs.

Mitt. Osterr. Aero-Clubs, 5. Jahrg., Xr. 4 (1. April 1918), Wien, pp. 122-124.

- Die Zukunftsaussichten des Weltluftverkers. Eine Betrachtung auf Grund

fachmännischer Erwägungen.

Mitt. Oesterr. Aero-Clubs, 6. Jahrg., Xr. 10 (1. Okt. 1919), Wien, pp. 275-279.

Büttner, Kurt Alex. Die Aussichten des zukünftigen Weltluftverkehrs. Eine Betrachtung auf Grund fachmännischer Erwägungen.

Technik für Alle, Heft 1 (1920-21), Stuttgart, pp. 17-21, ill.

- Ein neues Reiseflugzeug.

Flug, Jahrg. 1920, Nr. 5 (Mai), Wien, pp. 53-54.

Botst. H. Massac. Aircraft engines and high-speed marine service. Flight, Vol. 12, No. 34 (Aug. 19, 1920), London, p. 90s.

Bullrich, Arthur. Die Londoner Luftkonferenz vom 12. bis 15. Oktober. Flngwelt, 2. Jahrg., 24. Heft (24. Nov. 1920), Leipzig, pp. 582-583, 686-5s7.

Busch, T. D. Models constructed by .T. D. Bunch.

Aerial Age, Vol. H, No. 5 (Oct. 10, 1921), New York, p. 113, ill.

''Bunch-Commander." On a return to the air.

The Aeroplane, Vol. 20, No. 12 (Mar. 23,1921), London, p. 275.

Bund deutscher Flieger, e. V.. Essen. See Illustrierte Flug-Woche.

Burbling. See Savers, W. H.: Burbling and the Handley Page wing.

Bureau of Aeronautics. For a bureau of aeronautics.

Automotive Manufacturer, Vol. 62, No. 5 (Aug. 1920), New York, p. 22. Scient. Anicr., Vol. 122 (June 12, 1920), New York, p. 640.

•SV« Hicks, F. C: The proposed bureau of aeronautics in the Department of Commerce.

Bureau of Naval Aeronautics. The need of a bureau of naval aeronautics. Aviation, Vol. 10, No. 16 (Apr. 18, 1921), Now York, pp. 506-507.

Bureau of Standards. See Kngines: Work of the Bureau of Standards in testing airplane engines.

Burgess, C. P. Airship O-l and principles of semirigid airship construction.

Aircraft Technical Note No. 181 Department of the Navy, Bureau of Construction and Repair, Washington (May 26, 1920), pp. 13. ill.

lUBLtOOJRAl'H 1' OF AKKONAL'TICS, l!)20-l921.

65

Burgess, C. P. Bending moments, envelope, and cable stresses in nonrigid airships.

National Advisory Committee for Aeronautics, Report No. 115, Washington, Government Printing Office, 1921, pp. 14, diagrs.

- Calculation of bending moments in nonrigid airship hulls.

Aircraft Technical Note No. 1S9, Department of the Navy, Bureau of Construction and Repair, Washington (Nov. 5, 1920), pp. 4, diagr.

- The influence of aircraft upon naval warfare. *

U. s. Air Service, Vol. 5, No. 3 (Apr. 1921), New York, pp. 8-11.

Burke, F. D. Airplane-type ski glider.

l'op. Mcch., Vol. 33 (Feb. 1920), Chicago, pp. 307-310, diagr.

Burleson", A. S. Mr. Burleson on the air mail.

Aircraft Journal, Vol. G, No. 9 (Feb. 2S, 1920), New York, p. 10.

---Postmaster General Burleson on the air mail.

Aviation, Vol. 9, No. 13 (Dec. 13,1920), New Y'ork, pp. 417-419, ill.

--Story of our air mail.

Independent, Vol. 102 (Apr. 3,1920), New York, p. S, ill.

Burma. See Civil aviation: Civil aviation in India and Burma.

Burnelli. A quaint aeroplane.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 13 (Sept. 2S, 1921), London, pp. 277-278, ill. diagr.

Burnelli, Vincent J. See Eemington-Burnelli: The Remington-Burnelli "Airliner" twin-engine commercial biplane.

Burroughs, John. Flight of birds.

Atlantic Monthly, Vol. 126 (Sept. 1920), Boston, pp. 379-3S2.

Burt, G. L. Side doors for airplanes.

The Ace, Vol. 1, No. 12 (July, 1920), Los Angeles, p. 11, ill.

Butcher, F. L. C. Airship mooring and handling.

Acron. Joum., Vol. 25, No. 122 (Feb. 1921), London, pp. 71-93, iil. Aeronautics, Vol. 19, No. 374 (Dec. 16, 1920), London, pp. 132-135. Flight, Vol. 12, No. ol (Dec. 16, 1920), London, pp. 1270-1280, diagr.

Butler, Frank Hedges. Fifty years of travel, by land, water, and air. Londou, Fisher lruwin, 1920, pp. 121, ill.

Butler, L. H. See Baker, Horace R., and L. II. Butler. Commercial preparedness and the airship.

Butterfly monoplane. The "Butterfly" monoplane.

Aeronautics, Vol. IS, No. 33) (Mar. 11, 1920), London, p. 221.

C.

C. M. 5. Chalais-Meudou airship C. M. 5.

Automotive Industries, Vol. 43 (July 29, 1920), New York, p. 219, ill.

Cabaniixas. Reetierdos de campana con la flotilla.

Tohtli, aiio 5, Num. 1 (agoslo 1920), M6xico, pp. 3-1, ill.

Cabaniss, R. W. Commander R. \V. ('abanils, U. S. Navy, executive uftieor V. S. Naval Air Station, Pensacola, Fla.

The Naviator, Vol. 1, No. 4 (Mar. 6, 1920), I'ensaeola, Flu., p. 1, ill.

Cable. Aircraft to run on sky cable.

Aerial Age, Vol. 11, No. 15 (Dec. 19, 1921), Nov York, p. 340.

Cables. Cable laying by aeroplane.

Flying, Vol. in, No. 1 (May,1921), New York, p. 154.,

Cables. Machino-maJe cable terminal connections.

Aerial Age, Vol. 10, No. 12 (Jan. fl, 1020), New York, p. 455, ill.

- See Kearney, Norman L.: Gable lengths and fitting angles.

- See Scoble, Walter A.: Wire cables.

Cairo. Cairo to Cape by air.

Current History Magazine, New York Times, Vol. 11, pt. 2 (Mar. 1920), New York, pp. 4S7-4S9, map.

- Cairo-Cape flights.

Aeronautics, Vol. is, Nos. 331, 334 (Feb. 19, Mar. 11, 1920), Loudon pp. 151, 211, map.

-• The Cairo-Cape route.

Flight, Vol. 12, No. 1 (Jan. 1, 1920), London, pp. 20-21. map.

- Cairo to the Cape.

Aeronautics, Vol. 18, No. 330 (Feb. 12, 1920), London, pp. 136-138, ill.

- First Oairo-to-Cape flight.

Current History Magazine,. New York Times, Vol. 12 (May 1920), New York, pp. 351-355, ill., maps.

- London-Cairo-the Cape by airplane.

Scient. Amer., Vol. 122 (May 15, 1920), New York, p. 536.

- The voyages to Cape Town.

The Aeroplane, Vol. IS, Nos. 7, 9, 10, 13 (Feb. IS, Mar. 3, 10, 31, 1920), London, pp. 460-402, 509, 651-652, 670.

- See Cape to Cairo: French fliers cross Sahara in airplane.

- See Commercial aeronautics: Cape to Cairo air line opened.

- See Engines: Vindication of the aero-engine. Cairo-Cape flying.

- See Hicks, C: Empire building by air: Cairo to the Cape.

- See Routes: The Cairo-Cape air route.

- See Routes: Cairo to Cape route. Preparing the aerodromes on the southern

section.

- See Routes: Cape-Cairo route ready.

- «See Routes: The organization of the Cape to Cairo air route. Preparing the

aerodromes on the southern section.

- See Turner, C. C; Cairo-Cape flights: Why they failed.

Caldwell, F. W., and E. N. Fales. High efficiency air flow.

Journal American Society of Heating and Ventilating Engineers, Vol. 26, May, 1920, pp. 403^14.

Describes a new method of visualizing air flow.

Physical basis of air-propeller design—study of flight vortices; abstracts.

Mechanical Engineering, Vol. 12, No. 4 (Apr. 1920), New York, pp. 213-219, ill., charts, dlagr. Engineering, Vol. 109 (Apr. 16-23, 1920), London, pp. 501-504, 534-537.

Caldwell, F. W. Propeller testing laboratory at McCook field.

Scient. Amor. Monthly, Vol. 1 (Mar. 1920), New York, pp. 197-201, ill., diagr.

Caldweij., F. W. and E. N. Fales. Wind tunnel studies in aerodynamic phenomena at high speed.

National Advisory Committee for Aeronautics, Report No. S3, "Washington, Government Printing Office, 1920, pp. 52, ill.

Caldwell, F. W. See Fales, E. N., and F. W. Caldwell: The scope of wind tunnel ressarch. ,

California. Aerial races in California.

Flight, No. 653, Vol. 13, No. 26 (June 30, 1921), London, p. 139.

California. The Aero Club of Southern California.

Flying, Vol. 9, No. 12 (Jan. 1921), New York, p. 730.

- Air routes in California.

Aerial Age, Vol. 12, No. 26 (liar. 7,1921), New York, p. 653.

- Aviation in California.

Aerial Age, Vol. 13, No. 2 (liar. 21, 1921, New York, p. 33, ill.

- California aero news.

Aviation, Vol. 10, No. 16 (Apr. IS, 1921), New York, p. 508.

- See Forestry: A year of the aerial forest fire patrol.

--See Laws and regulations: New legislation in California.

California Institute of Technology. California "Tech."

Aviation, Vol. 8, No. 3 (Mar. 1, 1920), New York, p. 113.

Calthrop, E. R. Colonel Holt on parachutes and the air ministry. Flight, Vol. 12, No. 3 (Jan. 15, 1920), London, pp. 77-78.

- High-speed air contests and accidents.

Flight, No. 66S, Vol. 13, No. 41 (Oct. 13, 1921), London, p. 677.

- Parachutes and the Air Ministry competition.

Aeron. Eng. Suppl. The Aeroplane, Vol. 19, No. 23 (Dec. 8, 1920), London, pp. SS6, SSS.

- Parachute's worst enemy.

Scient. Amer. Monthly, Vol. 1 (Mar. 1920), New Y'ork, p. 28S.

- Pioneers of British aviation—XLVII. Mr. E. R. Calthrop, M. Inst. C. E.,

M. I. Mech. E;

Aeronautics, Vol. 19, No. 356 (Aug. 12, 1920), London, pp. 131-132, ill.

Caludel. The Caludel carburetor.

Aviation. Vol. 8, No. S (May 15, 1920), New York, pp. 324-320, ill., diagr.

Calza, G. Aviation and archaeology.

Art and Archaeology, Vol. 10 (Oct. 1920), Washington, 1). C, pp. 148-150, ill.

Camber. See Hill, j. D.: The touring airplane and the variable camber wing.

-- See Irving, H. B.: Variable wing area and variable camber.

- See Leaman, Thomas P.: Adjustable camber and variable angle of incidence.

- See Parker, II. !'.: The Parker variable camber wing.

- See Parker, H. F.: Variable camber wing.

Cambridge University. Cambridge University aeronautical society. Flight, No. 641, Vol. 13, No. 14 (Apr. 7, 1921), London, p. 243.

Camera obscura. Uses of the camera obscura.

Aircraft Journal, Vol. 6, No. 7 (Feb. 11, 1920), Now York, p. 9.

Cameras. A British aero camera.

Aeronautics, Vol. 20, n. s., No. 391 (May 5, 1921), London, p. 313, ill.

- Die Luftkamera in Canada.

Flugwclt, 2. Jahrg., 15. Heft (21. Juli 1920), Leipzig, p. 419.

- See Eastman Kodak: Eastman Kodak aerial cameras.

—— See Elton, Robert \V.: The Fairchild distant control for aerial cameras.

- See Elton, Robert W.: Mounting of cameras in airplaues.

-■ See Hyde, \V. A.: A stabilized camera.

- See Photography.

- See Derby: The sixth aerial derby and the Oxford r. Cambridge air race.

■-- See Oxford: The Oxford v. Cambridge race.

Camm, I'1. .1. The design of model airplanes.

I.nnclon, Beim Brothers (Ltd.), 1920, pp. 18s, diagr.

------ Model aeroplanes.

Flight, Vol. 12, Nos. 1-20 (Jan. Wime 21,1020), London, p. 29, diagr.; pp. 57-SS, 87,114, 138, 16«. 222, 251, 277, 303, 329, 357, 383, 407, 433, 4G0,4S5, 537, 559, 583,607,631, 655, 076-677; No. 614, Vol. 13, No. 17 (Apr. 2S, 1921), p. 301, ill.

- Model aeroplanes; the building of model monoplanes, biplanes, etc., together with a chapter on building a model airship.

New York, Funk ct Wagualls Company; London, Cassel! & Co., Ltd. [1920], pp. 156, ill.

- Models. The Olympia show.

Flight, Vol. 12, No. 39 (July 22, 1920), London, pp. 825-820, ill.

Camm, Sydney. The aero show: Some reflections.

Aeronautics, Vol. 19, No. 354 (July 29, 1920), London, p. 101.

■- Aeroplane construction; a handbook on the various methods and details of

construction employed in the building of aeroplanes. London, C. Loekwood & Son, 1919, pp. 13s, ill.

- Commerce and aviation.

Living Age, Vol. 307 (Oct. 2,1920), Boston, pp. 58-61.

Cammen, L. McCook Field and American aeronautics.

Mechanical Engineering, Vol. 42 (Aug. 1920), New York, pp. 441-444, ill.

Camouflage. Camouflaging airplanes.

Literary Digest, Vol. 65 (June 12,1920), New York, pp. 34-35, ill.

- See Howells, W. A.: Art of camouflage.

- See Veigler, Wm. R.: Aeronautical camouflage.

Campbell, C. I. See May, H., and C. I. Campbell: Rigid airship performance.

Campbell, C. I. R. Constructor Commander C. I. R. Campbell, O. B. E., M. I. IS". A., F. R. Ae. S., R. C. N. C.

Acren. Jouru., Vol. 25, No. 129 (Sept. 1921), London, pp. 461-462.

Campbell, C. T. R., and H. May". Effect of size upon performance of rigid airships. Kngineering, Vol. 109 (Apr. 2, 1920), London, pp. 464-466. Aviation, Vol. 9 (Sept. 1,1920), Now York, p. 82. Engineer, Vol. 109 (Apr. 2, 1920), London, pp. 439-110.

- Rigid airships.

Aeronautics, Vol. 19, No. 371 (Dec. 16, 1920), London, p. HO. Flight, Vol. 12, No. 52 (Dec. 23, 1929), London, pp. 1291-1297.

Campbell, IT. G. Lieut. H. G. Campbell borne to rest.

Aircraft Journal, Vol. 7, No. 1 (July 5, 1920), New York, p. 6.

Cam'Pbell, X. 11. See Pannell, J. R., and X. R. Campbell: The balancing of win;; flaps.

- See Pannell, .1. R., J. I). Coales, and N. R. Campbell: A comparison of biplanos

with equal and unequal chords.

- See Pannell, J. R., and N. R. Campbell: Design of Pins for the body of R. E. 8.

- See Pannell, J. R., and X. It. Campbell: The direction and velocity of the air

flow behind a biplane composed of wings of variable section.

-• See Pannell, J. R., and X. R. Campbell: Experiments on the modification of a

Handley-Page biplane wing.

Campbell, N. R. «See Pannell, j. R., and N. R. Campbell: The flow of air round a wing tip.

- «See Pannell, j. R., and N. R. Campbell: The forces and moments on a biplane

with wings of variable section.

- -See Pannell, j. R., and N. R. Campbell: Methods of support for models during

the measurement of their aerodynamic resistance.

•-■ «See Pannell, j. R., and N. R. Campbell: The resistance of certain streamline-shaped bodies.

-«See Pannell, J. R., and N. R. Campbell: Tests on a complete model of a Handley-

Page biplane (No. M/C 1455-1466).

- «See Pannell, j. R., and N. R. Campbell: Tests on an aerofoil suitable for air

screw design (A. D. No. 1).

- «See Pannell, j. R., and N. R. Campbell: The variation of the resistance of rigid

airship models with the scale and wind speed.

Canada. Aerial surveying in Canada.

Acr. Eng. Suppl. The Aeroplane, Vol. 21, No. 3 (July 20, 1921), London, p. 58.

- Aeroplanes and the Canadian oil fields.

Aerial Age, Vol. 14, No. 1 (Sept. 12,1921), New York, p. 16.

- The Air Board. Depreciation and insurance of war type aeroplanes and seaplanes.

Bulletin No. 1, May 1920, Ottawa, 1920, pp. 6.

■- Aircraft for Canada.

Aeronautics, Vol. 19, No. 362 (Sept. 23, 1920), London, pp. 225-226. Flight, Vol. 12, No. 39 (Sept. 23, 1920), London, pp. 1022-1023.

- Aviation in Canada.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 6 (Aug. 10,1921), London, p. 134.

- Aviation progress in Canada.

Aircraft Journal, Vol. 7, No. 12 (Sept. 20, 1920), New York, pp. 7-8.

- Canada's commercial air policy.

Aviation, Vol. 11, No. 3 (July IS, 1921), New York, p. 73.

- The Canadian air board.

Flight, Vol. 12, No. 22 (May 27, 1920), London, pp. 574-575.

- The Canadian air board's specifications for exploratory and forest-patrol aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 13 (Sept. 29, 1920), London, p. 5S4.

- The Canadian air force.

Aeronautics, Vol. 20, n. s., No. 3S7 (Mar. 17,1921), London, p. 190. Aviation, Vol. 10, No. 22 (May 30, 1921), New York, pp. 683-681, ill. Flight, Vol. 12, No. 24 (June 10,1920), London, p. 627.

•-- Canadian air harbors.

Aviation, Vol. 11, Nos. 16-17 (Oct. 17-24, 1921), New York, pp. 448-450, 4S1-482,1U .

- Canadian air progress—1920.

Aviation, Vol.. 10, No. 12 (Mar. 21,1921), New York, pp. 372-374, map.

- Canadian civil aircraft may not stunt.

Aviation, Vol. 10, No. 21 (May 23, 1921), New York, p. 657.

- Canadian Government purchases ten aeromarine navy flying boats for forest

patrol work.

Aerial Age, Vol. 12, No. 21 (Jan. 31, 1921), New York, p. 536.

- Canadian purchases in the TJ. S. A.

The Aoroplane, Vol. 20, No. 16 (Apr. 20, 1921), Loudon, p. 30s.

Canada. Canadian system of marking air harbors, adopted by the air board of Canada.

Aircraft Journal, Vol. 6, No. 12 (liar. 20, 1920), New York, p. 4, ill.

- Civil aviation in Canada.

Aviation, Vol. 11, No. 2 (July 11,1921), New York, p. 45.

--Civil aviation licenses in Canada.

Aviation, Vol. 11, No. 20 (Dec. 20, 1921), New York, p. 731.

- The commercial air pilots' association of Canada.

Aerial Age, Vol. 13, No. 0 (Apr. IS, 1921), New York, p. 130.

- Depreciation and insurance of war-type aeroplanes and seaplanes.

The Air Board, Bulletin No. 1, Hay 1920, Ottawa, 1920, pp. 6.

- Experimental flying operations in Canada.

Aviation, Vol. 11, No. 6 (Aug. 8,1921), New York, pp. 166-169, ill., map.

- For flying in Canada. Landing places being marked from coast to coast.

The Naviator, Vol. 1, No. 24 (July 31, 1920), Pensacola, Fla., p. 5.

- Landing fields in Canada.

Aerial Age, Vol. 14, No. 16 (Dec. 26, 1921), New York, pp. 371-373, 379, diagr.

- On Canadian activities.

The Aeroplane, Vol. 20, No. 11 (Mar. 16, 1921), London, pp. 244-246.

- Progress in Canada.

Agron. Journ., Vol. 25, No. 130 (Oct. 1921), London, p. 509.

- The progress of aviation in Canada.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 15 (Oct. 13, 1920), London, pp. 652-654, ill.

- Report of the Air Board for the year 1920.

Ottawa, 1921, pp. 16.

- Report of the Air Board for the fiscal year ending Mar. 31, 1920.

Ottawa, 1920, pp. S.

- Report of Canadian Air Board.

Aviation, Vol. 9, No. 8 (Nov. 8, 1920), New York, p. 264.

- Report of the Canadian Air Board fiscal year 1919-20.

Aircraft Journal, Vol. 6. No. 21 (May 24, 1920), New York, pp. 3-1.

- Report of the Canadian Air Board.

Journ. Soc. Automotive Engineers, Vol. 6, No. 6 (June 1920), New York, p. 427.

- Report of the Canadian Air Board for the year 1920.

Flying, Vol. 10, No. 4 (May 1921), New York, pp. 139-143.

-— Report on experimental aerial survey at Ottawa, 1920.

The Air Board, Bulletin No. 2, March 1921, Ottawa, 1921, pp. 16. ill.

- See Banks, William: Aviation in Canada.

Candace, Gratien. L'aviation coloniale.

L'Air, No. IS (5 aoüt 1920), Paris, p. 11.

Cannegieter, H. G. Eerste vaart van den ballon Neerlandia op 6 April. Vliegveld, 5e jaarg., No. 9 (23 Apr. 1921), Amsterdam, pp. 125-126, ill.

- Kabelballons voor het indische leger.

Vliegveld, 5e jaarg., No. 3 (29 Jan. 1921), Amsterdam, pp. 42-44, ill.

- Luchtvaartberichten.

Vliegveld, 5e jaarg., No. 6 (12 Maart 1921), Amsterdam, pp. 87-90.

--Xogmaals iets over de luchtvaartweerberichten.

Vliegveld. 5e jaarg., No. 15 (16 juli 1921), Amsterdam, pp. 217-219; No. 22 (22 Oct.), pp. 302303.

Cannegieter, H. G. De toestand van den dampkring boven Soesterberg . . . Vliegveld, 4de jaarg., 1920, 's-Gravenhage, pp. 375, 401, 405, 440, 441, ill. Vliegveld, 5e jaarg., 1921, Amsterdam, pp. 169-170, 244, 270-272, 291-292, 342-343, 360-361. diagrs.

—— De toestand van den dampkring boven Soesterberg in December 1920. Vliegveld, 5e jaarg., No. 5 (26 feb. 1921), Amsterdam, pp. 73-74.

- De toestand van den dampkring boven Soesterberg in Januari 1921.

Vliegveld, 5e jaarg., No. 7 (26 Maart 1921), Amsterdam, pp. 104-105.

--De toestand van den dampkring boven Soesterberg in Februari 1921.

Vliegveld, 5e jaarg., No. 10 (7 mei 1921), Amsterdam, pp. 143-144, ill.

Cantilever monoplanes. The D. H. cantilever monoplanes. Aerial Age, Vol. 13, No. 4 (Apr. 4,1921), New York, p. 86.

- See Haviland Aircraft Company: The D. H. cantilever monoplanes.

Capacity. Large capacity airplanes.

Everyday Engineering Magazine, Vol. 9, No. 2 (May 1920), New York, p. 115.

Cape Town. The flight to the Cape.

Flight, Vol. 12, Nos. 7,10, 11, 13 (Feb. 12, Mar. 4, 11, 23, 1920), London, pp. 188-189, 266, 289, 346, ill., map.

—— See Cairo: Cairo to Cape by air.

-■ See Cairo: Cairo-Cape flight.

- See Cairo: Cairo-Cape flights.

—— «See Cairo: Cairo to the Cape. -- «See Cairo: The Cairo-Cape route.

- .See Cairo: First Cairo-to-Cape flight.

- «See Cairo: London-Cairo-the Cape by airplane.

- «See Cairo: The voyages to Cape Town.

——■ «See Engines: Vindication of the aero-engine. Cairo-Cape flying.

- «See Hicks, C: Empire building by air: Cairo to the Cape.

- «See Routes: The Cairo-Cape air route.

- «See Routes: Cairo to Cape route. Preparing the aerodromes on the southern

section.

- «See Routes: Cape-Cairo route ready.

- «See Routes: The organization of the Cape to Cairo air route. Preparing the

aerodromes on the southern section.

- «See Turner, C. C: Cairo-Cape flights. Why they failed.

Caproni. The American-built Caproni biplane.

Flight, Vol. 12, No. 15 (Apr. 8, 1920), London, pp. 3S9-392, ill.

- Der Caproni-dreifach-Dreidecker.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 17. Heit (15. Sept. 1921), München, pp. 200-262, ill.

---- The Caproni Epoca.

Aviation, Voh 10, No. 15 (Apr. 11,1921), New York, p. 455.

- The Caproni "Nineplandem" flies. And comes to grief.

Flight, No. 637, Vol. 13, No. 10 (Mar. 10,1921), London, p. 172.

- The Caproni "Nineplandem" flying boat: Eight 400-horsepower Liberty

engines.

Flight, No. 044, Vol. 13, No. 17 (Apr. 2S, 1921), London, pp. 289-291,ill.

Caproni. Caproni's latest creation.

Aeronautics, Vol. 20, n. s., No. 38S (Mar. 24. 1921), London, p. 210, 111.

- The Caproni tandem triplane.

Aeronautics, Vol. 20, n. s., No. 393 (Apr. 28, 1921), London, p. 299, diagr.

--The Caproni triplane, equipped with eight 400-horsepower Liberty motors.

Flying, Vol. 10, No. 4 (May 1921), New York, pp. 143,144, ill.

- The Caproni triple hydro-triplane.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 11 (Mar. 16,1921), London, p. 256, 111.

--The development and construction of the Caproni aeroplanes.

Aerial Age, Vol. 12, No. 20. (Jan. 24, 1931), New York, p. 513.

- The giant Caproni.

Flight, No. 635, Vol. 13, No. S (Feb. 24, 1921), London, p. 126.

--The giant Caproni tandem triplane.

Aerial Age, Vol. 13, No. 5 (Apr. 11,1921), New York, pp. 103-104, ill., diagr.

- Riesen-Caproni.

Flugsport, 13. Jahrg., Nr. 7 (30. März 1921), Frankfurt, pp. 156-158, 111.

- See Jongbloed: De "Capronissimo" . . .

- See Meyer, E.: Fünfmotoren-200-PS-Caproni-Dreidecker.

Capronissimo. »See Lémonon, E.-H.: Un hydravion géant le "Capronissimo." Triple-triplan Caproni.

Captive balloons. New captive balloons.

Aircraft Journal, Vol. 6, No. 16 (Apr. 17, 1920), New York, p. 6, diagr.

- New type of captive balloon.

The Naviator, Vol. 1, No. 11 (Apr. 24, 1920), Pensacola, Fia., p. 6.

- New type of captive balloon. Reducing waste of gas.

Aeronautics, Vol. 18, No. 339 (Apr. 15, 1920), London, p. 313.

- See Frantzen, L. P.: Les ballons captifs.

Carburetion. Carburetion.

Aircraft Journal, Vol. 7, No. 13 (Sept. 27, 1920), New York, p. 10.

- Carburetion and your life.

Aircraft Journal, Vol. 7, No. 10 (Sept. 6, 1920), New York, p. 14.

—— Carburetion in internal combustion engines.

Aerial Age, Vol. 13, No. IS (July 11,1921), New York, p. 422.

- See Brown, G. M.: Carburetion as a prime factor in producing power.

Carburetor. Calibration of carburetor jet flow.

Aviation, Vol. 11, No. 10 (Sept. 5, 1921), New York, pp. 282-284.

- See Caludel: The Caludel carburetor.

- «See Claudel: Claudel carburetor now made in America.

- See Hannen: A novel carburetor.

Carden, P. T. [Ground engineering.] Discussion of lecture by H. W. S. Outram. Aëron. Journ., Vol. 25, No. 126 (June 1921), London, pp. 312-314.

Cardington. A visit to Cardington.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 23 (June S. 1921), London, pp. 530-532.

Carganico. Die deutsche Luftfahrt—ein grosses Ganzes !

111. Flug-Woche, 3. Jahrg., 23. Heft (9. Nov. 1921), Leipzig, pp. 467-471, ill.

--Der Unsinn vom "Luftkutscher."

III. Flug-Woche, 3. Jahrg., 5. Heft (2. März 1921), I^ipzig, pp. 79-SO.

Carganico. Unterbringung von Flugzeugen im Freien.

III. Flug-Woche, 3. Jahrg., 10. Heft (11. Mai 1921), Leipzig, pp. 188-190, ill.

—— Wie Frankreich den Gedanken an den Frieden mit Deutschland fördert. III. Flug-Woche, 3. Jahrg., 16. Heft (3. Aug. 1921), Leipzig, pp. 327-32S.

Carganico, D. Gewitter und Flugzeug.

Flugwelt, 2. Jahrg., Heft 16 (4. Aug. 1920), Leipzig, pp. 126-427. Suisse aérienne, 2« année, No. 17 (10 sep. 1920), Berne, pp. 254-256, ill.

Carhart, H. A. Assembling Liberty motor connecting rods.

Amer. Mach., Vol. 51 (Dec. 11,1919), New York, pp. 99.5-998, ill.

- Connecting rod forgings for the Liberty motor.

Amer. Mach., Vol. 52, No. 2 (Jan. 8, 1920), New York, pp. 89-92, figs.

- Finishing Liberty motor connecting rods.

Amer. Mach., Vol. 52 (Feb. 26, 1920), New York, pp. 457-460, ill.

- Liberty motor connecting rods.

Amer. Mach., Vol. 52 (May 27, 1920), New York, pp. 1148-1152, ill., diagr.

Cables, F. Le moteur à essence.

Paris, Libr. Dunod, 1921, pp. xx, 486.

Carlier, Andre. La photographie aérienne.

L'aerophile, 29= amiée, Nos. 21-22 (1«-15 nov. 1921), Paris, pp. 339-312, ill.

Carlill, James. Wind power.

Annual Report, Smithsonian Institution, 1918, Washington, pp. 117-156.

Carlo, Camillo de. The flying spy.

New York, E. P. Dutton & Co., 1919, pp. 402.

Carmina, Benjamin m. Aviation. Theorico-practical text book for students. London, MacMillan & Co., 1920, pp. ISO.

Caro, I. Aviones que no volaron.

Aire, Mar y Tierra, ano 2, Num. 15 (junio 1920), Madrid, pp. 311-317, ill.

Carpenter, Ford A. Photographing clouds from an airplane.

Scient. Amer. Monthly, Vol. 1 (June 1920), New York, pp. 13-MsS, ill.

- A solo flight in a spherical balloon.

The Ace, Vol. 3, No. 1 (Aug. 1921), Los Angeles, pp. 7-8, ill.

- A university course in meteorology.

The Ace, Vol. 3, No. 2 (Nov. 1921), Los Angeles, p. 5, ill.

Carriel, Chuse. Hawaii from the air. An account of the first aerial survey of o possessions in the Pacific, involving the complete circumnavigation by nav flying boats of all the islands in the archipelago.

Flying, Vol. 10, No. 4 (May 1921), New York, pp. 127-130, ill.

Carrington, H. The moduli of rigidity for spruce.

London, Edinburgh and Dublin Philosophical Magazine and Journal of Science, Vol. No. 246 (June 1921), London, pp. 848-859, ill.

Carroll, Phil. See Gorrell, E. s., and Phil. Carroll: Col. Raynal Cawthorne Bollin Lawyer—cavalryman—flyer.

Carrying surface. Die verstellbare Tragfläche.

FUigwclt, 2. Jahrg., 26. Heft (22. Dez. 1920), Leipzig, pp. 631-635, ill.

Carsalade, L. Reyue des brevets.

Aéronautique, 2« année, No. 18 (nov.-dec. 1920), Paris, pp. 262, ill.

Cartault, Pierre. En " Friedrichshafen " sur le Rhin.

Vie Aérienne, No. 164 (1<* janv. 19201, Paris, pp. 850-S51, ill.

Casale, Jean H. Comment de Romanet a battu le record du monde de la vitesse. Vie Aérienne, 5* année, No. 17 (27 nov. 1920), Paris, p. 258.

44439—25-6

74

lîlBI.IOGIÎ.-VPUY OF AERONAUTICS, 1020-1921.

Case, John. The design of long struts exposed to the air.

Aeronautics, Vol. 20, n. s., Nos. 391-392 (Apr. 11-21, 1921), London, pp. 257-258, 272-271.

Case, John, and A. A. Griffith. The lateral buckling of wing spars.

Tech. Kept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 82S-837, ill.

Case, John. The loads and stresses in aeroplanes.

Aeronautics, Vol. 18, Nos. 324-349 (Jan. 1-June 24, 1920), London, pp. 28-29, 48-49, 70-71, 111-112, 123-124, 160-161, 17S-179, 196-197, 21S-219, 235-236, 362-363, 382-383, 414-415, 42S-429, 419-449, 46S-469, 4S3-4S4, diagr.

Aeronautics, Vol. 20, n. s., Nos. 399-402 (June 9-30, 1921), London, pp. 415-417, 432-435, 473; Vol. 21, No. 406 (July 2S), pp. 67-09.

- The loads and stresses in aeroplanes. Part II. Tail unit and fuselage.

Aeronautics, Vol. 20, n. s., No. 399 (June 9, 1921), London, pp. 415-417.

Casein. See Bradford, Louis J. : Failure of casein glue joints in ash.

Casing head. Casing head gasoline impossible for altitude work.

Automotive Industries, Vol. 42 (May 27, 1920), New York, p. 1207.

Castrol. The history of castrol.

London, C. C. Wakefield & Co., Ltd., 1919.

Catapults. Brief history of launching catapults.

Aviation, Vol. 10, No. 9 (Feb. 28, 1921), New York, p. 278, ill.

- U. S. catapult experiment.

The Aeroplane, Vol. 21, No. 19 (Nov. 9,1921), London, p. 446.

- -See Navy: New naval catapult launching device.

- See Launching from ships: A compressed air operated catapult for launching

airplanes from ships.

Cato. Simplicity marks design of Cato monoplane and engine.

Automotive Manufacturer, Vol. 61, No. 11 (Feb. 1920), New York, pp. 23-26, figs.

Cattle ranches. Airplane inspection of cattle ranches.

Aircraft Journal, Vol. 6, No. 7 (Feb. 14, 1920), New Y'ork, pp. 3-4.

Caudron, Les avions Caudron.

Aéronautique, 3e année, No. 30 (nov. 1921), Paris, p. 470, ill.

- Caudron aeroplanes.

Aeronautics, Vol. 18, No. 331 (Feb. 19.1920), London, p. 156, ill.

- L'hydravion Caudron C 39 trimoteur.

L'Aérophile, 29« année, Nos. 11-12 (lpf-15 juin 1921), Paris, p. xvhi.

- Les multimoteurs Caudron.

Aéronautique, 3« annee Nos. 19-20 (jan. 1921), Paris, pp. 282, ill.

Cautley, John R. Wright aircraft engines; complete instructions for their installation, operation, and maintenance.

Paterson, N. J., Wright Aeronautical Corporation, 1921, pp. vii, 78, ill.

Cave, C. J. P., and J. S. Dines. Soundings with pilot balloons in the Isles of Scilly November and December, 1911.

Air Ministry, Meteorological Office, Geophysical Memoirs, No. 14, M. O. 220d, London, 1920, pp. 94, maps, diagrs.

Cave, C. J. P. Thunderstorms in the British Islands during January, February, and March, 1917.

Tech. Kept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 1150-1153.

- See Taylor, G. I., and C. J. P. Gave: Variation of wind velocity close to the

ground.

Cave-Brown-Cave, T. R. Airships for slow-speed heavy transport. Aeronautics, Vol. 19, No. 359 (Sept. 2, 1920), London, p. 178.

Cave-Brown-Cave, T. R. Airships for slow-speed heavy transport and their application to civil engineering.

Engineer, Vol. 130 (Sept. 10, 1920), London, pp. 257-258. Engineering, Vol. 110 (Sept. 3, 1920), London, p. 331. Seient. Amer. Monthly, Vol. 2 (Nov. 1920), New York, p. 259.

Oeans, Oliver. Wireless telephony in aeroplanes.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 8 (Aug. 25,1920), London, p. 4 IS.

Cei, L. Il motorista d'aviazione. Descrizione, governo e manutenzione dei motori per 1' aviazione.

Roma, 1920, pp. xvi-537, ili.

Celloni, A. Attività aeree civili in Italia.

L'Aeronautica, Anno 3, Num. 5-0 (luglio-agosto 1920), Roma, pp. 291-300.

Centaur. The Centaur disaster.

Aeronautics, Vol. 19, No. 363 (Sept. 30.1920), London, p. 236.

Central Aircraft Company. Central aircraft types.

Aerial Age, Vol. 11, No. 1 (Mar. 15, 1920), New York, pp. 20-22, ill., diagr.

- A new Central aircraft machine.

Flight, Vol. 12, No. 22 (May 27, 1920), London, p. 566, ill.

- See Great Britain: Modern British aircraft.

Certificates. Aerial navigators' certificates.

Aeronautics, Vol. 18, No. 338 (Apr. S, 1920), London, pp. 298-299. Flight, Vol. 12, No. 14 (Apr. 1, 1920), London, pp. 374-375.

--British aerial navigators' certificates.

Flying, Vol. 9, No. 9 (Oct. 1920), New York, pp. 596-598.

- Certificates of airworthiness.

Aeronautics, Vol. 20, n. s., No. 391 (Apr. 14,1921), London, p. 262.

- See Glass, William: Airworthiness certificates.

-■ See Great Britain: British aerial navigators' certificates.

Chakko, K. C. See Coker, E. G., and K. C. Chakko: The stress-strain properties of nitrocellulose and the law of its optical behaviour.

Chalais-Mbudon, Laboratoires de l'aéronautique de. See Guillet, Leon: Rapport présente . . .

Chamberlin-Standard. The Chamberlin-Standard H5 five-seater. Aviatiou, Vol. 11, No. 24 (Dec. 12,1921), New York, p. 681, ill.

Chambre Syndicale des Industries Aéronautiques. L'annuaire de la Chambre Syndicale des Industries Aéronautiques pour 1921. Paris, 1921.

- A la chambre syndicale des industries aéronautiques.

Aéronautique, 2= année, No. 13 (juin 1920), Paris, pp. 33-34.

Champsaur. Etude comparative du rendement des divers dirigeables. Aéronautique, 3« année, No. 24 (mal 1921), Paris, pp. 189-193, ill.

Chandler, Charles De F. Col. Charles De F. Chandler retires. Aviation, Vol. 9, No. 11 (Nov. 29, 1920), New York, p. 353, ill.

Channel. Channel islands air service.

Engineer, Vol. 133, No. 3454 (Mar. 10,1921), London, p. 267.

- Conference on cross-Channel air services.

Flight, No. 638, Vol. 13, No. 11 (Mar. 17,1921), Londou, p. 189.

Channel. Cross-Channel aeroplane services.

Aeronautics, Vol. 21, n. s., No. 400 (July 28, 1921), London, p. 59.

-■ The future of cross-Channel flying.

Flight, No. 647, Vol. 13, No. 20 (May 10,1921), London, pp. 335-336.

- See Grant, Hugh Duncan: A contribution to the meteorology of the English Channel.

Chanute Field. The course of aircraft armament at Chanute Field. Aerial Age, Vol. 13, No. 16 (June 27, 1921), New York, p. 375.

Chapman, E. H. The relationship between pressure and temperature at the same level in the free atmosphere.

Proc. Roy. Soc., Ser. A, Vol. 98, No. A091 (Dec. 3,1920), kondon, pp. 235-248, tables, diagrs.

Chapman, j. A. First, flight over a peak of the Rockies.

fop. Meoli., Vol. 33 (Jan. 1920), Chicago, pp. 100-101, ill.

Chapman, j. S. Shooting pictures of the Rockies from an airplane.

Illustrated World, Vol. 32 (Jan. 1920), Chicago, pp. 786-789, ill.

Chapman, S. The energy of magnetic storms.

Monthly Notices of the Royal Astronomical Society, Vol. 79, No. 1 (Nov. 1918), London, pp. 70-83.

Chaklton, E. O. L'avenir de l'aviation commerciale.

Vie Aérienne, No. 177 (1« avril 1920), Paris, pp. 1074-1075, ill.

Charlton. L. E. O. Future commercial aviation.

U. S. Air Service, Vol. 2, No. 6 (Jan. 1920), New York, pp. 17-18, ill.

Chart. See Bombing: The famous bombing chart.

Chase, H. Curtiss Navy racer which won the Pulitzer trophy.

Automotive Industries, Vol. 45 (Nov. 24, 1921), New York, pp. 1015-1016.

- Laboratory for aircraft engine testing.

Automotive Industries, Vol. 45 (Sept. 15, 1021), New York, pp. 520-522, ill., diagr.

Chassis. Flugzeugabfederung.

111. Flug-Woche, 3. Jahrg., 15. Heft (20. Juli 1921), Leipzig, pp. 309, ill.

Chatley, Herbert. Application of theory to ornithopters. The action of the flapping wing.

Aëron. Journ., Vol. 25, No. 129 (Sept. 1921), London, pp. 497-502, ill.

- The problem of flapping flight.

Aeron. Journ., Vol. 25, No. 129 (Sept. 1921), London, pp. 492-497, ill.

Chattock tilting manometer. See Pannell, j. R.: The Chattock tilting manometer for measurement of small pressure differences.

Chavagnes, René de. L'aviation de chasse.—Le groupe des "Cigognes."—De Guynemer à Fonck.

Paris, Etienne Chiron, 1921, pp.

Chavez, Georges. The Chavez memorial.

Aeronautics, Vol. 19, No. 362 (Sept. 23, 1920), London, p. 230.

- Un monument Geo. Chavez.

Suisse Aérienne, 2« année, No. 13, (10 juil. 1920), Berne, pp. 195.

- See Saladin, Raymond: À la mémoire de Geo. Chavez.

Chemical. Chemical warfare in future wars.

Aviation, Vol. 10, No. 22 (May 30, 1921), New York, pp. 693-694, ill. Chemistry. See Materials: Materials and chemistry.

Chemistry. See lloureu, C: La chimie française et les problèmes de la guerre; chimie et aéronautique.

Chess, W. A. Flying as a sport—some suggestions.

The Aeroplane, Vol. 18, No. 7 (Feb. 18, 1920), London, pp. 38S-390.

- Terminological tortuosities.

Aeron. Eng. Suppl. The Aeroplane, Vol. IS, No. 4 (Jan. 2S, 1920), London, p. 213.

Chessex, Louis. Les tendances actuelles dans les moteurs d'aviation. Suisse Aérienne, 3e année, No. 19,1921, Berne, pp. 283-286.

- Vérification en vol des lois aérodynamiques.

Suisse Aérienne, 3U année, No. 9,1921, Berne, pp. 123-124.

Chesterton, G. K. Aeroplanes and morals.

Living Age, Vol. 306 (Sept. 4, 1920), Boston, pp. 611-611.

Chicago. Addresses at the Chicago aeronautic meeting.

Joura. Soe. Automotive Engineers, Vol. 6, No. 4 (Apr. 1920), New York, pp. 270-271.

- The Chicago aero show.

Aer. Eng. Supp!. The Aeroplane, Vol. 18, No. S (Feb. 25, 1920), London, pp. 416-427, ill.

- Chicago aeronautical exposition.

U. S. Air Service, Vol. 2, No. 6 (Jan. 1920), New York, p. 27.

- The Chicago aeronautical show.

Aerial Age, Vol. 10, No. 12 (Jan. 5, 1920), New York, pp. 443-454, ill.

Aviation, Vol. 7, No. 11 (Jan. 1, 1920), New York, pp. 470-474, ill.

- Chicago air show presents significant technical developments.

Automotive Industries, Vol. 42 (Jan. 22, 1929), New York, pp. 293-299, ill.

- Chicago's fine aeronautical show.

Aircraft Journal, Vol. 6, No. 3 (Jan. 17, 1920), New Yrork, pp. 3-7, 20, ill.

- Chicago's first aeronautical show.

Aircraft Journal, Vol. 6, No. 1 (Jan. 3, 1921), New York, pp. 5-7, 20, 21, 21, ill.

- U. S. Army and Navy exhibiting at Chicago show.

Air Power, Vol. 6, No. 1 (Jan. 1920), New York, p. 205, ill.

- See Klemin, Alexander: Impressions of the Chicago aeronautical nhow.

Chile. The Chilean air service.

The Aeroplane, Vol. 20, No. 11 (Mar. 10, 1921), London, p. 250.

China. Aerial mail in China.

Aerial Age, Vol. 13, No. 8 (May 2, 1921), New York, p. 173. Aeronautics, Vol. 19, No. 350 (July 1, 1920), London, p. 3.

—— Air postal stamps for China.

Flight, No. 650, Vol. 13, No. 29 (July 21,1921), London, p. 405.

- American aircraft fur China.

Aviation, Vol. 8, No. 1 (Feb. 1, 1920), New York, p. 19.

- American aircraft sold in China.

Aircraft Journal, Vol. f>, No. 3 (Jan. 17, 1920), New York, pp. 12-13, ill.

---- Americans operate Chinese air line.

The Naviator, Vol. 1, No. 10 (Apr. 17, 192»), I'mwola, Fin., p. 1.

--Aviation in China.

Flight, Vol. 12, No. 19 (May 6, 1920), London, p. 5(12.

- Official aviation in China.

The Aeroplane, Vol. 20, No. 13 (Mar. 30, 1921), Loudon, p. 298.

- See Chung, De Senn: Aviation in China.

China. See Worlarz, G.: Flugzeug und Verkehrsschliessung Chinas.

- See Wood, C: The Chinese market for British aircraft.

Chollat, H. L'exposition du sous-secrétariat d'etat de l'aéronautique et de l'aviation militaire.

L'Aérophile, 2'J année, Nos. 23-2-1 (1"-15 déc. 1921), Paris, pp. 369-370.

--Quelques notes sur le Salon. Les avions.

L'Aérophile, 29 année, Nos. 23-24 (1"-15 déc. 1921), l'avis, pp. 337-363, ill.

Chollet, Léon. Les treuils de ballon captif.

Aéronautique, 3« année, Nos. 27, 28 (août-sept. 1021), Paris, pp. 316-319, 377-380, ill.

Christmas, William Whitney. Dr. William Whitney Christmas, aero engineer, makes statement.

The Naviator, Vol. 1, No. 11 (Apr. 24, 1920), Pensaeola, Pia., pp. 1, 7.

Christy, H. H. Capt. H. H. Christy, U. S. Navy, commanding officer TJ. S. Naval Air Station, Penascola, Fla.

The Naviator, Vol. 1, No. 1 (Feb. 14, 1920), Pensaeola, Fia., p. 1, ill.

Chronology. Calendar of events.

Flying, Vol. 9, No. 12 (Jan. 1921), New York, pp. 738, 740: Vol. 10, Nos. 1-6 (Feb.-July), pp. 34, 30, 73-74, 113-114, 153-154, 185-1SS, 217-218.

- Outstanding aeronautical events in 1919 arranged in chronological order.

TJ. S. Air Service, Vol. 2, No. 6 (Jan. 1920)), New York, p. 32.

Chudeau, K. L'hydrographie ancienne du Sahara (ses conséquences biogéographiques).

Revue Scientifique, 59 année, No. 8 (23 avril 1921), Paris, pp. 193-198, map.

Chung, De Senn. Aviation in China.

Aviation, Vol. 11, No. 18 (Oct. 31, 1921), New York, pp. 511-512, ill.

Churchill. The future of the R. A. F.

Flight, Vol. 12, No. 9 (Feb. 26, 1920), London, p. 236.

Churchill, Winston. Aircraft in Mesopotamia. Mr. Winston Churchill's report to Parliament.

Flight, No. 652, Vol. 13, No. 25 (June 23, 1921), London, p. 421.

Churchill, Winston Spencer. Mr. Churchill's departure.

The Aeroplane, Vol. 20, No. 7 (Feb. 16, 1921), London, p. 149.

Circling flight. See Norton, F. LL, and E. T. Allcu: Control in circling flight.

Civil Air Bureau. President Harding urges civil air bureau.

Aviation, Vol. 11, No. 25 (Dec. 19,1921), New York, p. 711.

Civil aeronautics. Civil aeronautics bill.

Aviation, Vol. 11, No. 22 (Nov. 28, 1921), New York, p. 626.

- The air conference. The operation of civil aircraft.

Aeronautics, Vol. 19, No. 366 (Oct. 21,1920), London, pp. 284-292.

- British civil aviation.

Aviation, Vol. 11, No. 7 (Aug. 15,1921), New York, p. 24)3.

- By sea, air, and land—the transport trinity.

Flight, No. 632, Vol. 13, No. 5 (Feb. 3,1921), Loudon, p. 79.

-• Civil aviation can pay.

Flight, No. 637, Vol. 13, No. 10 (liar. 10, 1921), London, p. 166.

- Civil aviation in the British Dominions.

Aviation, Vol. 11, No. 5 (Aug. 1,1921), New York, p. 140.

- Civil living during the past year.

The Aeroplane, Vol. 20, No. 8 (Feb. 23, 1921), London, p. 176.

BIBLIOGRAPH V OF AERONAUTICS, 1.020—J 023.

79

Civil, aeronautics. Civil flying progress.

Flight, No. 63.5, Vol. 13, No. 8 (Feb. 24, 1921), London, p. 128.

- Bills introduced in Senate and House to aid development of civil aviation.

Aerial Age, Vol. 14, No. 16 (Dee. 26, 1921), New York, pp. 366-367.

- Civil aviation. April 1-September 30, 1920.

Flight, Vol. 12, No. 51 (Dec. 16, 1920), London, p. 1275.

•- Civil aviation in foreign countries.

The Aeroplane, Vol. IS, No. 1 (Jan. 7, 1920), Loudon, pp. 54-58. Aircraft Journal, Vol. 6, No. 5 (Jan. 31, 1920), New York, pp. 6-7.

■- Civil aviation in India and Burma.

Aeronautics, Vol. 19, No. 363 (Sept. 30,1920), London, p. 240.

- Civil aviation October, 1919, to March, 1920.

Flight, Vol. 12, Nos. 28-34 (July 8-Aug. 19, 1920), London, pp. 734-736, 869-870, 893-894, 913-915.

- Civilian aviation gained 20 per cent.

Automotive Industries, Vol. 45 (Dec. 29,1921), New York, p. 1288.

—— Civilian aviation petitions President. Leaders of civilian aviation ask for hearing on air policy.

Aviation, Vol. 10, No. 20 (June 27, 1921), New York, pp. 801-802.

-• Civil aviation subsidies. Recommendation of the advisory committee.

Aeronautics, Vol. 19, No. 350 (July 1, 1920), London, pp, 6-7.

- Civil aviation troubles and progress.

The Outlook, Vol. 46, No. 1188 (Nov. 6, 1920). Loudon, p. 470.

- The committee on civil aviation.

The Aeroplane, Vol. 20, No. 10 (Mar. 9, 1921), London, p. 227.

--The encouragement of civil aviation.

Flight, No. 628. Vol. 13, No. 1 (Jan. 6,1921), London, pp. 1-2.

- Government to aid civil aviation.

Aerial Age, Vol. 14, No. 15 (Dec. 19, 1921), New York, p. 339.

- How to save civil aviation.

Aeronautics, Vol. 19, No. 366 (Oct. 21, 1920), London, pp. 281-282.

--On subsidies and civil aviation.

The Aeroplane, Vol. 20, No. 22 (June 1,1921), London, pp. 497-J99.

- On the R. A. F. and civil aviation.

The Aeroplane, Vol. 21, No. 21 (Nov. 23, 1921), London, pp. 517-519.

- On things as they seem.

The Aeroplane, Vol. 20, No. 12 (Mar. 23, 1921), London, pp. 269-270.

- Pour l'aviation civile. La réunion du 11 février au Sénat.

L'Aêrophile, 28e année, Nos. 3/4 (1^-15 fév. 1920), Paris, p 55.

- Progress of civil aviation.

Aeronautics; Vol. 19, No. 374 (Dec. 18, 1920), London, pp. 430-4.31.

- Progress of civil aviation. Half-yearly report.

Flight, No. 652, Vol. 13, No. 25 (June 23, 1921), London, pp. 428-129.

- Progress of civil aviation. Half-yearly report of the Department of the Controller-General of Civil Aviation.

London, H. M". Stationery Office [1921], Cmd. 1312.

- Promotion of civil aviation.

The Naviator, Vol. 1, No. 39 (Dec. 18, 1920), FcDsacola, Fia., p. 2.

- The rise of civil aviation.

Aeronautics, Vol. 19, No. 300 (Sept. 9, 1920), Loudon, pp. ‘89-190.

80 BIBLIOGRAPHY UV AEKONAUT1CS, .1020-1921.

Civil aeronautics. Service and civil aviation in the Lords.

The Aeroplane, Vol. 21, No. IS (Nov. 2,1921), London, p. 392.

- Six months' flying. Summary of official report.

Aeronautics, Vol. 19, No. 351 (July S, 1920), London, pp. 22-23

- Six months of civil aviation.

The Aeroplane, Vol. 19, Nos. 1-3, 0 (July 7, 14, 21, Aug. 11, 1920), London, pp. 12, 14, S8-90, 17S, 322.

- Subsidy and prospects.

The Outlook, Vol. 47, No. 1200 (Jan. 29, 1921), London, p. 114. £00,000 for civil aerial transport.

- See Air lines: Air lines of to-day. Time-tables of the various services.

- See Air Ministry: Air Ministry subsidies for civil aviation.

- See Advisory Committee on Civil Aviation: Government assistance for the

development of civil aviation.

-- See Aerodromes: Aerodromes for civil use.

- See Argentina: Civil air service in Argentina.

- See Barnwell, F. S.: The technical aspects of service and civil aviation.

- See Clark, V. E.: Air transportation and the business man.

- See Colombia: Commercial aviation.

- See Commercial aeronautics.

-- See Durand, William Frederick: Analysis of the need for civil aviation.

- See France: Commercial aviation in France.

- See G., C. G.: The future of civil aviation.

- See G., C. G.: On the coming of civil aerial transport.

- See G., O. G.: On the needs of civil aviation.

- See Great Britain: Civil aviation in the House.

- See Great Britain: The Department of Civil Aviation.

- See Great Britain: Progress of civil aviation.

--- See Haviland, G. de: De Haviland on civil aviation.

-- See Italy: Civilian aircraft ot Italy.

-- See Knight, William: The organization of civil aviation along international

lines.

-- See Montagu of Beaulieu: A comparison of the cost of transport and ton-miles .

by land, sea, and air.

- See "Navigator:" Civil aviation and the supply of aviators.

- Sec Norway: Norway's experience of commercial aviation.

--See Olympia: Air transport and efficiency. Two interesting papers read at

Olympia.

- See Philbiu, S. II.: The need of federal control in commercial aviation.

- See Siusheimer, A.: Civilian aviation control favored by general staff.

- See Subsidy: The subsidizing of civil aviation.

--See Sykes, Frederick H.: Aviation and air transport.

BIBLIOGRAPHY Ok' AERONAUTICS, 1920-1921.

Civil aeronautics. See Sykes, Frederick H.: Civil aviation abroad. -- See Sykes, Frederick H.: Civil aviation and air services.

- See Sykes, Frederick H.: Maj. Gen. Sir F. H. Sykes on civil aviation.

- See Transportation: The requirements and difficulties of air transport.

- See United States: American air transport services.

- See Vincent, Jesse J.: The next steps in commercial aviation.

- See White-Smith, H.: The operation of civil aircraft in relation to the constructor.

Civil Aviation Advisory Board. See Air Ministry: Civil Aviation Advisory Board.

Civil Service. United States Civil Service examination. Aeronautical draftsman, National Advisory Committee for Aeronautics.

aviation, vol. 10, no. 10 (mar. 7, 1021), new york, p. 310.

Clapp, Frederick Mortimer. A history of the 17th aero squadron . . . December, 1918.

garden city, new york, country life tress [1920], pp. ix, 171, ill.

Clark. Two new Clark aerofoils.

aviation, vol. s, no. 10 (june 15, 1920), new york, pp. 391-395, charts.

Clark, D. Nelson. The future of aeronautics.

the ace, vol. 1, no. 12 (july 1920), los angeles, pp. 10, 2s-29.

- The spiral engine.

the ace, vol. 2, no. 1 (aug. 1920), los angeles, pp. 9-13, 22-23, ill.

Clark, V. E. Air transportation and the business man.

thing, vol. 10, no. 5 (june 1921), new york, pp. 107-173, ill. journ. soc. ant. eng., vol. s (june 1921), new york, pp. 5b3-569.

--Maintaining airplane engine power at great, altitudes.

general electric review, vol. 23 (june 1920), schenectady, pp. 174-175. journ. soc, automotive engineers, vol. 6 (apr. 1920), new york, pp. 215-219.

- New York to San Francisco iu 9 hours made possible when engine efficiency is

maintained at high altitudes.

u. s. air service, vol. 3, no. 2 (mar. 1920), new york, pp. 12-15, churls.

Clarke, George Aubogrne. Clouds; a descriptive illustrated guide book to the observation and classification of clouds. london, constable & co., 1921

reviewed in: aeron. journ., vol. 25, no. 130 (ocl. 1021), london, pp. 559-500.

Clarkson, Coker F. Automotive engineering standardization and progress. aviation, vol. 9, no. 5 (Oct. 1, 1920), new york, p. 15s.

Claudel. Claudel carburetor now made in America.

aerial ago, vol. 11, no. 10 (may 17, 1920), new york, pp. 323-321, ill., iliogr.

Claudy, O. H. Aircraft of the future.

soionl. amor., vol. 123 (nov. 20, 19211), new york, p. 520.

Claus, G. M. Draadloozc telefonieprocven to Soesterberg.

vliegvcld, ide jaarg., no. 23 (ft nov. 1920), 's-gravenlmge, p.

('lay, X. S. Bakeliter-micarta airplane propellers.

electrical journal, vol. 10, no. 11 (nov. 1d19), pittsburgh, pa., pp. isa-im. lips.

Clayden, A. L. Sane view of the aircraft engineering future.

automotive industries, vol. 43 (sept. 10, 1920), new york, pp. 551-552.

Clayton, II. H. The "flight" of flying-fish.

nature, vol. 107, no. 2701 (aug. 1, 1921), london, p. 714.

82 I!!BUCK.RAI'H Y OP AERONAUTICS, 1920-1921.

Cleary, Charles .1. Airplane wing coverings.

Aviation, Vol. 7, No. 1 (Jan. 1, 1020), Now York, pp. 187-100, ill.

Cleary, Maurice G. Maurice G. Cleary.

Aviation, Vol. 10, No. 2 (Jan. 10,1921), New York, p. 47, ill.

Clément, L., and C. Rivière. Examen dynamométrique des toiles enduites par les dissolutions d'éthers cellulosiques.

Chimie et Industrie, T. 3 (avr. 1920), Paris, pp. 440-441.

Clerc, L. P. Aerial photography and photo-topography.

Photographic Journal, Vol. 81, n. s., Vol. 45, No. 10 (Nov. 1921), London, pp. 382-400, diagrs. Bibliography, pp. 396-399.

- Applications de la photographie aérienne (lecture et interpretation, stereoscopie aérienne, appareils et méthodes pour la phototopographie aérienne).

Paris, O. Doin et fils, 1920, pp. 350, ill. Un volume l'Encyclopédie Scientifique XVIII. Cited in: L'Aérophile, 28 année, Nos. 3/1 (l«r-15 fév. 1920), Paris, p. xix.

Clergt-Bi.in. Clergt-Blin motor.

Aeronautics, Vol. IS, No. 334 (Mar. 11,1920), London, p. 214, ill.

Cléry, A. Pour utiliser les lignes aériennes—l'aéro-indicateur.

L'Aérophile, 29 année, Nos. 9-10 (1»-15 mai 1921), Paris, p. 36.

Clinometers. See Sanford: The Sanford clinometer.

Clothing. Electrically heated aviator's clothing.

Aerial Age, Vol. 10, No. 12 (Jan. 5, 1920), New York, pp. 458-459, ill.

- Hot clothes for aviators.

Literary Digest, Vol. 64 (Jan. 31, 1920), New York, pp. 27-28, ill.

Cloud flying. See Hunter, Robert J.: Cultivating the balance sense: A prelude to cloud flying.

- Cloud-flying instrument board.

Aerial Age, Vol. 13, No. 13 (June 6, 1921). New York, p. 301.

--See Eytinge, Bruce: Cloud flying.

Clouds. See Carpenter, F. A.: Photographing clouds from an airplane.

- See Clarke, G. A.: Clouds.

Cloudster. "Cloudster" under construction.

The Acc, Vol. 2, No. 1 (Nov. 1920), Los Angeles, p. 13, cliagr.

Clough, G. E. Mystery of the soaring hawk.

Atlantic Monthly, Vol. 125 (June 1920), Boslou, pp. 793-795.

Clute, Walker S. Commercial aviation in Colombia.

Plying, Vol. 9, No. 11 (Dec. 1920), New Y'ork, pp. 094-695, map.

Coal gas. See David, W. T. : The internal energy of inflammable mixtures of coal gas and air after explosion.

Coales, j. D. See Bairstow, L., and j. 1). Coales: Notes on the prediction and analysis of aeroplane performance.

- See Cowley, W. L., L. F. G. Simmons, and J. D. Coales: The effect of balancing

a rudder, by placing the rudder axis behind the leading edge, upon the controlling moment on the machine.

--See Cowley, W. L., L. F. G. Simmons, and j. D. Coales: An investigation to

determine the best shape of fairing piece for a cylindical strut.

- See Cowley, W. L., L. G. Simmons, and j. D. Coales: Tests on the complete

model of F. E. 5 aeroplane.

BIBLIOGRAPHY OF AERONAUTICS, 1920-19E1. 83

Coales, J. D. See Cowley, W. L., and J. D. Coales: Wind forces on aeroplane wires of various sections.

- See Fage, A., and J. D. Coales: Experiments with two aerofoils of high aspect

ratio.

- See Griffiths, E. A., and J. D. Coales: Effect of variation in the bottom camber

of aerofoils.

- See Griffiths, E. A., and J. D. Coales: The wind resistance of an aeroplsfne

wheel.

—- See Jones, R., W. L. Cowley, and J. D. Coales: The direction and velocity of flow behind a strut.

- See Pannell, J. R., J. D. Coales, and N. R. Campbell: A comparison of biplanes

with equal and unequal chords.

- See Pannell, J. R., E. A. Griffiths, and J. D. Coales: Experiments on the interference between pairs of aeroplane wires of circular and lenticular cross-section.

Coast patrol. Aircraft aid to disabled vessels.

Aircraft Journal, Vol. 6, No. 9 (Feb. 28, 1920), New York, p. 5, ill.

- See Parker, Stanley V.: Coast Guard aviation.

Coatings. Comparison of moisture resistance tests for coatings.

Aircraft Journal, Vol. 0, No. 7 (Feb. 14, 1920), New York, p. 10.

Cobb, Percy W. A contribution to the study of dark adaptation.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 99, Ft. 0 (Aug. 15, 1920), Washington, Government Printing Office, pp. 39-41.

- Dark adaptation with especial reference to the problems of night flying.

-Mr Service Information Circular (Heavier-than-air), Vol. 1, No. 99, Ft. 5 (Aug. 15, 1920), Washington, Government, Printing Office, pp. 27-38, ill.

Cobham, Alan J. Popularizing aviation.

The Aeroplano, Vol. 18, No. 9 (Mar. 3, 1920), London, p. 458.

Code. International air code.

Aeronautics, Vol. 20, n. s., No. 385 (Mar. 3,1921), London, p. 155.

--A proposed aeronautical safety code.

Aviation, Vol. 11, No. 12 (Sept. 19, 1921), Now York, pp. 338-340.

---Underwriters for National Air Code.

Aviation, Vol. 10, No. 17 (Apr. 25,1921), New York, p. 535.

Cokfin, J. G. Attainment of high levels in the atmosphere; reply to A. McAdie. Science, Vol. 51 (Apr. 9,1920), Garrison, N. Y., pp. 366-303.

--Note on measurement of speed of airplanes.

Aviation, Vol. 9, No. 2 (Aug. 15, 1920), New York, pp. 54-55, diagr.

--Static pressure gradients in wind tunnel work.

Aviation, Vol. 8, No. 8 (May 15, 1920), New York, pp. 3)7-318, diagr.

-• A study of airplane ranges and useful loads.

Fifth annual report of National Advisory Committee for Aeronautics, Washington, 1920. pp. 539-567, ill.

National Advisory Committee for Aeronautics, Report No. 69, Washington, Government. Printing Office, 1920, pp. 29.

Flight, Vol. 12, No. 16-18 (Nov. 11-25, 1920), London, pp. 1179-HS1, 1199-1201, 1214-1216, diagr.

Cogni, E. Der Jahrestag des JJandelsluftverkehres in London. Fing, Sondernummer (Dez. 1920), Wien, pp. SS-S9, ill.

84

BIBLIOGRAPHY OP AET10.NAUTICS, 1920-1921.

OoKBK, E. G., and K. G. Chakko. The streas-strain properties of nitro-cellulose and the law of its optical behaviour.

I'UIosophieal Transactions, Eoyal Society of London, Ser. A, Vol. 221, a586, London, 1920, pp. 139-162.

Cole, A. P. The principles of rigid airship design.

Aeron. Eng. Suppl. The Aeroplane, Vol. 18, No. 5 (Feb. 1, 1920), London, pp. 253-260, ill. APron. Journ., Vol. 21, No. Ill (Mar. 1920), London, pp. 98-131, ill. A-vonautics, Vol. 18, Nos. 32s-329 (Jan. 29-Feb. 5, 1920), London, pp. 101-104, 126-130. Flight, Vol. 12, Nos. 5-s (Jan. 29-Feb. 19, 1920), London, pp. 132-133, 159, 183-186, 205-209.

Count, Leo\t X. W. The Klemperer wing-load indicator.

A\iation, Vol. 11, No. 6 (Aug. 8, 1921), New York, pp. 164-165, ill.

Collier. See Bragg, Caleb S.: Contenders for Collier trophy should act now.

Collins, Claude It. The boys' book of model aeroplanes. Revised. New York, The Century Company, 1921, pp. ix, 264, ill.

-• What t > do with our fliers?

u. s. Air Service, Vol. 3, No. 1 (Feb. 1920), New York, pp. 25-28, ill.

Collins, H. E. See Bairstow, L., A. Fage and H. E. Collins: The relation between the efficiency of a propeller and its speed of rotation.

- See Faee, A., and H. E. Collins: Dependence of the efficiency of an airscrew

on the speed of rotation and the diameter, with a direct reference to the question of engine gearing.

- See Fage, A., H. E. Collins, and T. H. Fewster: Description of apparatus for

measurement in a wind tunnel of the performance of an airscrew or the windage torque of a rotary engine.

-• See Fage, A., and H. E. Collins: Experiments, at high speeds, on six aerofoils

suitable for airscrew design.

-■ See Fage, A., and H. E. Collins: An investigation of the magnitude of the

inflow velocity of the air in the immediate vicinity of an airscrew, with a view to an improvement in the accuracy of prediction from aerofoil data of the performance of an airscrew.

—— See Fage, A., and H. E. Collins: An investigation of the mutual interference of an airscrew and body of the "tractor" type of aeroplane.

- See Fage, A., and II. E. Collins: An investigation of the mutual interference

of airscrew blades.

-■ See Fage, A., and II. E. Collius: An investigation of the mutual interference

of the airscrew, body, and wings of the tractor aeroplane, B. E. 2E.

- See Fage, A., and 11. E. Collins: An investigation of the mutual interference

of airscrews and bodies of the "pusher" type.

--See Fage, A., and H. E. Collins: An investigation of the strength of two airscrews for F. E. 213.

---Sec Fage, A., and H. E. Collins: Measurements of the drag of the bodies of a

model fighter and bomber machine.

--See Fage, A., and H. E. Collins: A preliminary investigation of the mutual

interference of an airscrew and a tractor body, as affected by the fairing of the nose of the body.

- See Fage, A., and H. E. Collins: The "scale-speed" effect on a model airscrew of small diameter.

- See Fage, A., and II. E. Collins: Some experiments on helicopters.

Collins, H. E. See Fage, A., and H. E. Collins: Some experiments with tandem combinations of airscrews.

- See Fage, A., and H. E. Collins: Some notes on the calculation of the working

stresses of an airscrew.

- See Fage, A., and H. E. Collins: Tests on Ave model airscrews and an experimental investigation of the interferences between these airscrews and a model of the end of the whirling arm at the Royal Aircraft Factory.

—— See Fage, A., and H. E. Collins: Windage experiments with a model of the rotary engine B. R. 1.

- See Fage, A., and H. E. Collins: A windmill to drive a wireless set of power

one kilowatt.

Collins, J. H. From airplanes to wheelbarrows.

Outlook, Vol. 123 (Dec. 24, 1919), New York, pp. 540-542.

Colombia. Colombian services.

Aerial Age, Vol. 13, No. is (July 11,1921), New York, p. 424.

- Commercial aviation. *

Flying, Vol. 10, No. 2 (Mar. 1921), New York, pp. 59, 70.

- See Clute, Walker S.: Commercial aviation in Colombia.

- <See Tobón, A.: Aviación en Colombia.

Colonial. Aircraft for colonial use.

Aer. Eng. Suppl. Tlie Aeroplane, Vol. 20, No. 11 (Mar. 16, 1921), London. r>. 25S.

Columbia University. Aircraft course at Columbia.

Aviation, Vol. 10, No. 2 (Jan. 10,1921), New York, p. 54.

Columns. Comparison of column formulas.

Engineering Division, Air Service, Technical Orders No. 17 (June 1920), Dayton, Ohio, pp. 69-71.

Colvin, Charles H. The Pioneer turn indicator.

Aviation, Vol. 8, No. 7 (May 1, 1920), New York. pp. 2S3-2SI, ill.

Colvin, Fred Herbert, and Henry Fred Colvin. The aircraft handbook; a collection of facts and suggestions concerning the construction and care of planes, motors, and instruments for those interested in modern aircraft.

New York, McGraw-Hill Book Company, Inc., 1921, pp. ix, 415, ill., diagrs.

Second edition. I'irst edition has title: Aircraft Mechanics.

Colvin, Fred Herbert. Details of airplane manufacture.

Amer, Mach., Vol. 52 (Jan. 22,1920), New York, pp. 201-204, ill.

- How Ford built Liberty motors.

Amer. Mach., Vol. 51 (Dec. 18, 1919), New York, pp. 1037-1041, ill.

- Naval air station at Pensacola.

Amcr. Mach., Vol. 53 (July 29,1920), New York, pp. 197-199, ill.

-- Some details of airplane manufacture.

Amer. Mach., Vol. 52, No. 4 (Jan. 22,1920), New York, pp. 201-204, ill.

Colvin, Henry Fred. /See Colvin, Fred Herbert, and Henry Fred Colvin: The aircraft handbook. ■ Colyer, W. T. Aviation and fire protection.

Quarterly, National Fire Protection Association, Vol. 13, No. 2 (OrI. 1919). pp. 114-120.

Commercial aeronautics. L'activité aéronautique aux Etats-Unis. Aéronautique, 3= armée, No. 23 (avr. 1921), Paris, pp. 163-lBn.

Commercial aeronautics. Aerial Express Co. announces gigantic program of seaplane lines.

Aerial Age, Vol. 11, No. 11 (May 24, 1920), New York, p. 359.

- Aerial mail as a promoter of commercial aeronautics.

Aerial Ago, Vol. 12, No. 12 (Nov. 29, 1920), Now York, p. 315.

- Aerial passenger travel at high altitudes.

Scient. Amer. Monthly, Vol. 1 (Jan. 1920), New York, pp. 49-51, ill.

- Aerial service between Buenos Aires and Pernambuco.

Pan American Magazine, Vol. 30 (Dec. 1919), New York, pp. 94-95.

- Aerial transportation like merchant marine.

Aircraft Journal, Vol. 6, No. 15 (Apr. 10, 1920), New York, pp. 5-6.

- Aero limited passenger list (July 1920).

Aircraft Journal, Vol. 7, No. 10 (Sept. 6, 1920), New York, p. 8.

- Aero limited September passenger record.

Aircraft Journal, Vol. 7, No. 17 (Oct. 25, 1920), New York, p. 9.

- Aeronautics given 10-year setback.

The Naviator, Vol. 1, No. 1 (Feh. 14, 1920), Pensacola, Fia., p. S.

- Aeroplanes and ocean travel—a suggestion.

Aeronautics, Vol. 19, No. 359 (Sept. 2, 1920), London, pp. 173-171.

- Air line to Cuba.

Pan American Magazine, Vol. 30 (Nov. 1919), New York, pp. 49-50.

- Air liner is designed for commerce.

Automotive Industries, Vol. 41 (Nov. 13, 1919), New York, pp. 964-967. ill , plans.

- Air lines and finances.

Aerial Age, Vol. 12, No. 11 (Nov. 22,1920), New York, p. 291.

- Air travel for everybody.

Literary Digest, Vol. 65 (Apr. 24,1920), New York, pp. 18-19, ill.

- Airplane here as commercial factor.

The Naviator, Vol. 1, No. 8 (Apr. 3,1920), Pensacola, Fia., pp. 1, 8.

- Airplane used as a time saver.

The Naviator, Vol. 1, No. 15 (May 22, 1920), Pensacola, Fia., pp. 1, 8.

- Airship services and commercial conditions.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 13 (Mar. 31,1920), London, pp. 678,680.

- Airship ton-miles. Air-Commodore Maitland's estimate criticised.

• Aeronautics, Vol. 18, No. 343 (May 13, 1920), London, p. 376.

- Airships for slow-speed heavy transport.

Aeronautics, Vol. 19, No. 359 (Sept. 2, 1920). London, p. 178. Scient. Amer. Monthly, Vol. 2 (Nov. 1920), New York, p. 259.

- American commercial airplanes—1919-1920; tabulation.

Automotive Industries, Vol. 42 (Jan. 15, 1920), New York, pp. 174-17E.

- America's aircraft opportunity in South America.

Literary Digest, Vol. 65 (May 22, 1920), New York, pp. 119-120.

- Antics of a commercial dirigible.

Scient. Amer., Vol. 121 (Dec. 27, 1919), New York, p. 637, ill.

- L'aviation commerciale allemande.

Aéronautique, 3« année, No. 26 (juil. 1921), Paris, pp. 291-292.

- Awakening to our danger in Great Britain's airplane dumping.

The Naviator, Vol. 1 No. 21 (July 10, 1920), Pensacola, Fia., pp. 2, 7.

Commercial aeronautics. Blow to U. S. aviation.

The Naviator, Vol. 1, No. 16 (Hay 29, 1920), Pensacola, Fla., p. 3.

- A Bureau of Commercial Aeronautics.

Aerial Age, Vol. 14, No. 3 (Sept. 26, 1921), New York, p. 52.

- Business and military efficiency of future depends upon our air merchant

marine.

The Naviator, Vol. 1, No. 22 (July 17, 1920), Pensacola, Fla., p. 2.

- Business and military efficiency of to-morrow.

Aircraft Journal, Vol. 7, No. 7 (Aug. 16, 1920), New York, p. 7.

—— By air from London to Australia.

Outlook, Vol. 123 (Dec. 24,1919), New York, pp, 530-532. ill.

--Can airways be made to pay?

Aeronautics, Vol. 19, No. 35S (Aug. 26, 1920), London, pp. 157-158.

—— Commercial aircraft for engineers.

Aviation, Vol. 11, No. 19 (Nov. 7,1921), New York, p. 542.

- Commercial airplane development.

Scient. Amer., Vol. 122 (June 26,1920), New York. p. 696.

- The commercial airship. Its operation and construction.

Engineer, Vol. 130, No. 3386 (Nov. 19, 1920), London, pp. 501-502.

- Commercial airship operation. An argument that properly planned route can

be operated at rates comparable with those of present transportation.

TJ. S. Air Service, Vol. 5, No. 3 (Apr. 1921), New York, pp. 25-27, ill.

- Commercial airship transport. Capitalization of $5,000,000 is necessary for a

start on a small scale.

Aircraft Journal, Vol. 6, No. 10 (Mar. 6, 1920), New York, pp. 16-17.

- Commercial and military possibilities of aircraft.

Journ. Soc. Automotive Engineers, Vol. 6, No. 3 (Mar. 1920), New York, p. 160.

- Commercial aviation. Design requirements.

Aeronautics, Vol. 20, n. s., No. 381 (Feb. 3,1921), London, p. 78.

—■—■ Commercial aviation in U. S. A.

Aeronautics, Vol. 18, No. 325 (Jan. S, 1920), London, p. 35.

- Commercial aviation progress.

Engineering News-Record, Vol. 85 (Oct. 7,1920), Now York, pp. 678-679.

- Commercial aviation soon to be reality.

The Naviator, Vol. 1, No. 6 (Mar. 20, 1920), Pensacola, Fla., pp. 1, 8.

- Commercial flying in the United States.

Aircraft Journal, Vol. 7, No. 17 (Oct. 25,1920), New York, pp. 7-9, ill.

—— The commercial future of airships.

Aeronautics, Vol. 18, No. 341 (Apr. 29, 1920), London, pp. 340-341.

—■— Commercial service between France and Morocco.

Aircraft Journal, Vol. 6, No. 14 (Apr. 3 1920), New York, p. 11.

- Commercial value of the airship.

The Naviator, Vol. 1, No. 17 (June 5, 1920), Pensacola, Fla., p. 5.

- Cape to Cairo air line opened.

Journ. Soc. Automotive Engineers, Vol. 6, No. 2 (Feb. 1920), New York, p. 86.

- Cost of commercial flying.

Automotive Industries, Vol. 42 (May 13, 1920), New York, p. 1097.

- Disagreement over aviation.

The Naviator, Vol. 1, No. 18 (June 12,1920), Pensacola, Fla., p. 3.

Commercial aeronautics. Dumping of military equipment on market material aid to aviation?

The Naviator, Vol. i, No. 12 (May 1,1920), Pensacola, Fla., pp. 1, 3.

-■ The dumping situation.

Aircraft Journal, Vol. 7, No. lfi (Oct. 18, 1920), New York, p. 10.

- England-Belgium air service.

Aeronautics, Vol. 19, No. 353 (July 22, 1920), London, p. 67.

- England to Australia flight.

Scient. Amcr., Vol. 122 (Jan. lu, 1920), New York, p. 35, ill.

- Era of commercial airplanes now dawning.

Automotive Manufacturer, Vol. 02, No. S (Nov. 1920), New York, pp. 7-10, 19, ill., diagr.

- European nations encouraging commercial aviation.

Aviation, Vol. 9, No. 11 (Nov. 29, 1920), New York, p. 350.

- Europe's progress in commercial aviation. Handley Page map of European air

routes.

Aircraft Journal, Vol. 7, No. 15 (Oct. 11, 1920), New York, p. 6, map.

- Figures on air transport.

Aircraft Journal, Vol. 6, No. 16 (Apr. 17, 1920), New- York, p. 1.3.

- The financial aspect of commercial aviation.

Journ. Soc. Automotive Engineers, Vol. 6, No. 3 (Mar. 1920), New York, p. 176.

- Flying boat service from Key West to Havana.

Scient. Amer., Vol. 122 (Jan. 3, 1920), New- York, p. 13, ill.

- Flying freight.

Flying, Vol. 10, No. 3 (Apr. 1921), New York, p. 105.

- Flying over clouds in relation to commercial aeronautics.

Fright, Vol. 12, No. 11 (Mar. 11, 1920), London, pp. 298-299.

- Flying's commercial future.

The Naviator, Vol. 1, No. 8 (Apr. 3, 1920), Pensacola, Fla., p. 4.

- Forerunners of the flying liners.

Scient. Amer., Vol. 122 (June 19, 1920), New York, p. 667, ill.

- Freight train that flies.

Independent, Vol. 104 (Oct. 2, 1920), New York, p. 24.

- From England to Australia by air.

Literary Digest, Vol. 61 (Jan. 3, 1920), New York, pp. 44-48, ill., map.

- From Paris to New York in one day.

Review of Reviews, Vol. 62 (Aug. 1920), New York, pp. 217-218.

--The future of transportation.

Journ. Soc. Automotive Engineers, Vol. 7, No. 4 (Oct. 1920), New York. p. 341.

- Goods by air. The meaning of the Alula wing.

Aeronautics, Vol. 19, No. 354 (July 29,1920), London, pp. 96-97, diagr.

- Group of progressive Americans organizing aerial transportation lines throughout the United States, unable to get deliveries of aeroplanes of American manufacture, acquire large number ef aeroplanes from British Government.

Flying, Vol. 9, No. 5 (June 1920), New York, pp. 334-335.

- High-lift wing and commercial aviation.

Scient. Amer., Vol. 123 (Oct. 9, 1920), New York, p. 371, ill.

- How it looks and feels to fly in an air-Pullman.

Literary Digest, Vol. 64 (Mar. 13, 1920), New York, pp. S9-90.

- Internationales Luftverkehrsabkommen.

Mitt. Oesterr. Aero-Clubs, 6. Jahrg., Nr. 9, 11, 12 (1. Sept., 1. Nov., 1. Dez. 1919), Wien, pp. 251-258, 304-310, 323-328.

Commercial aeronautics. Key West-Havana air line inaugurated.

Aerial Age, Vol. 12, No. 9 (Nov. S, 1920), New York, pp. 249-250, 111.

- Key West-Havana passenger air line.

TJ. 8. Air Service, Vol. 4, No. 4 (Nov. 1920), New York, pp. 22-23, ill.

- Key West-Havana route inaugurated.

Aviation, Vol. 9, No. 7 (Nov. 1,1920), New York, pp. 226-227, 230, ill.

- Large aircraft will make aerial transport lines public utilities.

Aerial Age, Vol. 12, No. 6 (Oct. 18, 1920), New York, p. 165.

- The large demand for aeroplanes.

Aerial Age, Vol. 11, No. 16 (June 28, 1920), New York, pp. 539^540.

- The large demand for aeroplanes in the United States.

Flying, Vol. 9, No. 7 (Aug. 1920), New York, pp. 444-445.

■- Liners may carry planes. In addition to passengers special mails could be

quickened by this method.

The Naviator, Vol. 1, No. 38 (Dec. 11, 1920), Fensacola, Fla., p. 1.

- Load factors for commercial aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. IS, No. 10 (Mar. 10, 1920), London, pp. 538, 540.

- The London-Continental services.

Flight, Vol. 12, No. 38 (Sept. 16,1920), London, pp. 996-997.

- The London-Continental services. Flights between September 19 and December 18, inclusive.

Flight, Vol. 12, Nos. 40-52 (Sept. 30-Dec. 23, 1920), London, p. 1040, 1068, 1095, 1115, 1125, 1151, 1170, 1196, 1211, 1230, 1250, 12S8.

- London-Paris air service.

Journ. Soe. Automotive Engineers, Vol. 6, No. 5 (May 1920), New York, p. 297.

- London-Paris air express.

TJ. S. Air Service, Vol. 3, No. 1 (Feb. 1920), New York, p. 18.

- London-Paris airplane passenger service.

Journ. Soc. Automotive Engineers, Vol. 6, No. 1 (Jan. 1920), New York, p. 55.

- London-Paris fares.

Aeronautics, Vol. 19, No. 357 (Aug. 19, 1920), London, p. 145.

- Los Angeles to Chicago.

The Ace, Vol. 2, No. 2 (Sept. 1920), T^os Angeles, p. 12.

- Making airways pay.

Aircraft Journal, Vol. 7, No. 14 (Oct. 4,1920), New York, pp. 3-4. Flying, Vol. 9, No. 10 (Nov. 1920), New York, pp. 619-624, ill.

- Mapping air routes for commercial flying.

Literary Digest, Vol. 66 (Aug. 14, 1920), New York, pp. 76-78, map.

- New air lines in South America.

Pan American Magazine, Vol. 31 (Oct. 1920), New York, pp. 261-262, ill.

- New commercial monoplane i* quickly dismantled.

Popular Mechanics, Vol. 34 (Dec. 1920), Chicago, p. SS3, ill.

- New international aircraft services.

The Aeroplane, Vol. 18, No. 25 (June 23, 1920), London, p. 1202.

- No limit to use of aircraft.

Aircraft Journal, Vol. 6, No. 12 (Mar. 20, 1920), New York, pp. 5-6.

- Passenger list of Aero Limited (August, 1920).

Aircraft Journal, Vol. 7, No. 13 (Sept. 27, 1920), New York, p. 9.

- Pony blimp for commercial use.

Scient. Amer., Vol. 122 (Apr. 24, 1920), New York, p. 45!), ‘11. 44439—25-7

Commercial aeronautics. Pony blimp service.

The Ace, Vol. 2, No. 2 (Sept. 1920), Los Angeles, p. 11, ill.

■——• Proposed transport airplane.

Aviation, Vol. 9, No. 10 (Nov. 22, 1920), New York, p. 321, diogr.

- Regular air line for the Pacific coast.

The Naviator, Vol. 1, No. 15 (May 22, 1920), Pensacola, Fia., pp. 1, 8.

-- Report of commission of Aero Club of America and Aerial League of America

which investigated aircraft demand and aeronautic possibilities in United States, Europe, and South and Central America.

Air rower, Vol. 6, No. 1 (Jan. 1920), New York, pp. 210-211.

—— Requirements of commercial airplanes.

Aviation, Vol. 11, No. 3 (July 18,1921), New York, pp. 68-70.

--Shall we put the airplane to work in America?

Automotive Industries, Vol. 42 (Mar. 18, 1920), New York, pp. 693-696.

- Solving the transport problem. Benn Brothers institute a new service. A

weekly journal and a freight exchange.

Aeronautics, Vol. 19, No. 369 (Nov. 11,1920),"London, p. 338.

- Stupendous status of American aircraft industry.

Aerial Age, Vol. 11, No. 15 (June 21, 1920), New York, pp. 503-504. Flying, Vol. 9, No. 6 (July 1920), New York, p. 377.

- Successful year's flying on London-Paris route.

Automotive Manufacturer, Vol. 62, No. 6 (Sept. 1920), New York, p. 1C.

- Travel by air now being promoted.

Printers' Ink, Vol. 112 (Sept. 16, 1920), New York, p. 28.

- Time-table and tariff of air companies operating at Paris.

Aeronautics, Vol. 19, No. 364 (Oct. 7, 1920), London, p. 262.

- Transoceanic airplane, multiple engines and transmission gears as aids to

continuous flight.

Scient. Amer., Vol. 123 (Nov. 6, 1920), New York, p. 471, ill.

- Les transports aériens entre Paris et Londres.

Génie Civil, T. 76 (June 26, 1920), Paris, pp. 577-578.

- The truth about commercial aeronautics.

Aerial Age, Vol. 14, No. 13 (Dec. 5,1921), New York, p. 294.

- United States has opportunity to lead world in civilian aeronautic activities

and as a market for aircraft in 1920. Report of Commission of Aero Club of America and Aerial League of America which investigated aircraft demand and aeronautic possibilities in United States, Europe, and South and Central America.

Aerial Age, Vol. 10, No. 12 (Jan. 5, 1920), New York, pp. 435-437, 470.

- Wanted: a Henry Ford of the air.

The Naviator, Vol. 1, No. 2 (Feb. 21,1920), Pensacola, Fia., p. 3.

- See Accidents. AccidentB in commercial aviation.

-• See Aerodromes: Aerodromes for civil use.

- See Air routes.

- See "Anglo-Dane": Commercial aviation in Germany.

- See Arnold, H. H.: Commercial possibilities of aircraft in the West.

-- See Benn Brothers: Solving the transport problem. Benn Brothers institute a

new service. A weekly journal and a freight exchange.

- «See Bingham, H.: Airships in foreign trade.

Commercial aeronautics. See Bingham, Hiram: Aviation and foreign trade.

- See Brancker, Sefton: Aerial transport from the business point of view.

-■ See Carnai, S.: Commerce and aviation.

- See Cave-Brown-Cave, T. R.: Airships for slow-speed heavy transport.

- See Charlton, L. B. O.: Future commercial aviation.

-■ See Civil aviation:

- See Clute, Walker S.: Commercial aviation in Colombia.

- See Commercial aeronautics.

-■ See Conturier, Roger: Ou en est 1'aviation commerciale.

- See Dawson, Trevor: Commercial airship, its operation and construction.

- See Douglas, D. W.: The airplane a3 a commercial possibility.

- See Fokker, Anthony H. G.: The development of commercial aeronautics.

- See Gaulois, G.: What about our commercial aviation?

- See Great Britain: British commercial air planes—1919-20; tabulation.

- See Halverson, H. A.: Rise of civil aviation.

—■—■ See Hartney, Harold E.: On the problems of commercial aeronautics.

- See Hayford, John Fillmore: What should be done to increase the civil use of

airplanes?

-■ See Hermant, Paul: Deux avions de transport commercial.

- See Hickam, H. M.: Progress in commercial aviation.

- See Houston, G. H.: Aeronautics, international aspectB, national control, commercial development, etc.

-• See JL-6: The log of an aluminum air liner in first passenger flight, New York

t» Chicago, the JL-6 German metal monoplane beats the Twentieth Century Limited by 12 hours.

- See Jones, Melville: Flying over clouds in relation to commercial aeronautics.

-■ See India: Suggested air fleet for India.

- See Italy: Italian plane makers seek world aviation sales.

—r- See Kingaley, S. G.: Commercial aviation in Uruguay. -■ See Landis, R. G.: Rich man, poor man, beggar man.

- See Larsen: Larsen flight aids commercial aviation.

- See Lloyds, D. G.: Dropping passengers off air liners on the fly.

- See Mingos, H. L.: Cities preparing for future air traffic.

- See Martin, Glenn L.: The Glenn L. Martin commercial transport biplane.

——■ See Mueller, L. H.: Cost of operation for airplane service.

- See North American Aerial Transportation Company: Big airship company

being formed. North American Aerial Transportation Company to start with $5,000,000 capital.

- See Orcy, L. d': Dawn of American commercial aviation.

Commercial acroDautics. See Page, F. H.: Commercial aviation, its development since the war and its scope in the future.

- See Parsons, F. W.: Commercial aeronautics.

-■ See Piatt, jr., R. H.: Transportation through the air; significant and recent

developments of commercial flying.

- See Richmond, V. C; Organization of a colonial airship service.

- See Tinker, Clifford Albion: Commercial aeronautics.

- See Transportation: The requirements and difficulties of air transport.

- See Pierrot, Émile.: La navigation aérienne commerciale en 1920.

- See Pony blimp: Pony blimp for commercial use.

- See Praeger, O.: Air mail shows commercial possibilities of planes.

- See Pratt, H. B.: Commercial airships; with an introduction by Sir A. Trevor

Dawson.

- See Pratt, H. G.: Developing trade with South America by air.

- See Quisenberry, G. E.: Commercial airplane in its present-day development.

- See Searle, F.: Can airways be made to pay?

- See Sinsheimer, A.: Civilian aviation control favored by general staff.

- See Sinsheimer, A.: New York-London airship line service is planned.

- See Stockbridge, E. P.: Cargoes through the clouds.

- See Stout, W. B.: New planes advance commercial air possibilities.

- See Subsidies: Civil aviation subsidies. Recommendation of the Advisory

Committee.

- See Sykes, F. H.: Aerial transport from a business standpoint.

- See Sykes, F. H.: Civil aviation and air services.

- See Tandy, E. T.: Commercial airplane reaches stage of national advertising.

- See Teed, P. Litherland: Future developments of the rigid airship for commercial purposes.

- See Thomas, G. Holt: Aerial transport.

- See Thomas, G. Holt: Commercial aeronautics.

- See Thomas, G. Holt: Commercial aeroplanes—the problems of speed and

load- See Thomas, Holt: Commercial communication by air.

- See Townshend, B. W.: Commercial aircraft.

- See Upson, Ralph H.: The Bodensee commercially profitable. Postwar conditions in German aerial transportation.

- See Volmerange, A.: Les problèmes techniques de l'aviation commerciale.

- See Warner, E. P.: Comments on small airplanes competing for commercial

aircraft.

- See Willys, J. N.: Flying's commercial future.

- See Wings: Commercial utility wing. An interesting Blackburn development.

- See Wings: Goods by air. The meaning of the Alula wing.

Commercial aeronautics. See Woodhouse, Henry: How the world found 100 uses for aeroplanes.

- See Zeppelins: New Zeppelins for America.

Commission sportive aéronautique.

L'Aérophile, 28 année, Nos. 3/4 (ler-iä fév. 1920), Paris, p. 61.

Communiqués de l'office aérien fédéral.

Suisse Aérienne, 2« année, 1920, Berne, pp. 100, 123-124, 166, 175-176, 210-214, 213-211, 200, 291-292, 356-357.

Compass. The aeroplane compass during change of speed and course. Aeronautics, Vol. 20, n. s. No. 396 (May 19,1921), London, p. 358.

- The aperiodic magnetic compass.

Aeronautics, Vol. 20, n. s., No. 395 (May 12, 1921), London, p. 345, ill.

- Distant reading German airplane compass.

Scient. Amer. Monthly, Vol. 2 (Nov. 1920), New York, p. 274.

- Gyroscopic compass; a nonmathematical treatment.

Engineer, Vol. 129 (Ian. 10-Mar. 5, 1920), London, pp. 55-57, .S1-S3, 105-107, 136-138, 160-162, 190-192, 210-212, 242-245.

- New aviator's compass, the Bamberg tele-compass.

Automotive Industries, Vol. 43 (Nov. 25, 1920), New York, p. 1058.

- Kadio compass.

TJ. S. Air Service, Vol. 4, No. 1 (Aug. 1920), New York, p. 22.

- Selenium aviation compass placed on tail of plane.

Pop. Mech., Vol. 34 (Dec. 1920), Chicago, p. 840.

- See Bamberg: New aviator's compass, the Bamberg tele-compass.

- See Brown, S. G.: Gyrostatic compass.

- See Condroyer, L.: Le compas de navigation aérienne.

- See Crouse, G. B.: Principles of the gyro-compass.

- See Messenden, Reginald A.: The Fessenden peloris (wireless compass), a caution as to its use.

- See Field, M. B.: Navigational magnetic compass considered as an instruisent

of precision.

- See Friedensburg, "Walter: The distant compass.

--See Friedensburg, Walter: Der Fernkompass.

- See Kean, ,1. B.: Radio compass and automatic pilot developed for naval flying

boats.

- See Rouch, .T.: Le compas do navigation aérienne.

- See Sanford, R. L.: Testing of magnetic compasses.

Competitions. See Seaplanes: The seaplane competitions. Compressed air. See Addems: The Addems compressed-air model.

- See Fastje: The Fastje compressed-air motored model.

--■ See Models: Plans for building compressed-air model.

Compressors. See Devillers, Rene: The problem of the turbo-compressors.

Condemine, Henri. Sauvons l'aviation.

Vie Aérienne, No. 171 (19 fevr. 1920), Paris, pp. 977-978, ill.

Condit, K. H. Firing orders of internal-combustion engines.

Amer. Mach., Vol. 52 (Apr. 8,1920), New York, pp. 792-791, ill., diagr.

94

BIBLIOGRAPH Y OF AERONAUTICS, 1920-1921.

CoNDiT, K. II. Modern aviation engines.

Aruer. Mach., Vol. 52-53 (Feb. 19, Mar. I, July 1, Sept. 30, Nov. IS, Dec. 2, 1920), New York, pp. 396-398, 518-519, 20-22, G16-61S, 936-938,1042-1044, diagr.

CoN'dhoyeh, L. Le compas de navigation aérienne.

Aéronautique, 1» année, No. 9 (fevr. 1920), Paris, pp. 387-395, ill.

Coney, William D. Flying across the continent in twenty-two hours. U. S. Air Service, Vol. 5, No. 3 (Apr. 1921), New York, pp. 12-15.

Confehence for Limitation of Armament. Aeroplane carriers an issue at Limitation Conference.

Aerial Age, Vol. 14, No. 13 (Dec. 5, 1921), New York, pp. 291-292.

Congo. Aerial mails in the Congo.

Flight, No. 650, Vol. 13, No. 23 (June 9,1921), London, p. 391.

Congrès International de Navigation Aérienne, Paris internationaal Iuchtvaart-coDgres te Parijs van 15-26 November 1921.

Vliegveld, 5 de jaarg., No. 17 (13 Aug. 1921), Amsterdam, pp. 241-242.

- Le premier congrès international de la navigation aérienne.

Aéronautique, 3e année, No. 31 (dec. 1921), Paris, p. 525.

—— See Lefranc, Jean-Abel: Le premier Congrès International de la Navigation Aérienne.

Congress. A congress on aerial navigation.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 11 (Sept. II, 1921), London, p. 230.

--- See Italy: An Italian aeronautical congress.

Connecticut. Connecticut examines pilots.

Aircraft Journal, Vol. 6, No. 10 (Mar. 6, 1920), New York, p. 24. —— See. Malone, William J.: Connecticut's new laws of the air. Connecting rods. See Carhart, II. A.: Assembling Liberty motor connecting rods. -• See Carhart, II. A.: Connecting-rod forgings for the Liberty motor.

- 5«« Carhart, H. A.: Finishing Liberty motor connecting rods.

—— See Carhart, H. A.: Liberty motor connecting rods.

Constantin, Jean. Sur le problème du vol a voile.

Aéronautique, 2« année, No. 18 (nov.-déc. 1920), Paris, pp. 251-255, ill.

Construction. Aircraft construction muBt be encouraged.

Aerial Age, Vol. 12, No. 10 (Nov. 15, 1920), New York, p. 269.

- Der deutsche Luftfahrzeugbau und seine Nebenindustrien nach dem Weltkriege.

III. Flug-Woche, 3. Jahrg., 15. Heft (20. Juli 1921), I/pipzig, pp. 295-298, ill.

- Dorner-Konstruktionen.

Flugsport, 13. Jahrg., Nr. 4 (16. Feb. 1921), Frankfurt, pp. 79-85, ill.

—— Einfluss der Flugtechnik auf den Automobilbau.

Suisse Aérienne, 3« année, No. 22-23,1921, Berne, pp. 330-332.

- Flugzeugbauverbot.

Flugsport, 13. Jahrg., Nr. 12 (8. Juni 1921), Frankfurt, pp. 259-268.

- Fortschritte des amerikanischen Yerkehrsflugzeugbaues.

Luftweg, Nr. 15-46 (17. Nov. 1921), Berlin, pp. 320-323. ,

- Der gegenwärtige Stand der deutschen Flugtechnik.

Suisse Aérienne, 3« année, No. 2 (fevr. 1921), Berne, pp. 18-22, ill.

- Konstruktions-Einzelheiten.

Flugsport, 13. Jahrg., Nr. 15 (20. Juli 1921), Frankfurt, pp. 383-334, ill.

Construction. Die Lehren des Flugzeugbaues und ihre Anwendung im Automobilbau.

Luftweg, Nr. 47-18 (1. De?. 1921), Berlin, pp. 334-335.

- Metal construction.

Aeronautics, Vol. IS, No. 326 (Jan. 15, 1920), London, p. 61, diagr.

- Das moderne Flugzeug und seine Anwendungen.

Suisse Aérienne, g' année, No. 17, 1921, Berne, pp. 244-251, ill.

- Rhön-Segelflug 1921: Konstruktions-Einzelheiten.

Flugsport, 13. Jahrg., Nr. 16 (3. Aug. 1921), Frankfurt, pp. 349-355, ill.

- Stahlkonstruktionen im Flugzeugbau.

Luftfahrt, 24. Jahrg., Nr. 4 (1. Apr. 1920), Berlin, pp. 55-56, ill.

- Tests made at the National Physical Laboratory for the Superintendent of Aircraft Construction on the strength of steel lugs used in connection with the forked ends of aeroplane wires.

Tech. Kept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 456-457, diagr.

- Verkehrsflugzeug der Auto- und Flugzeugwerke von Cuyk.

III. Flug-Woche, 3. Jahrg., 3. Heft (2. Feb. 1921), Leipzig, pp. 49-47, ill.

'- See Bairstow, L., and A. Fage: Oscillations of the tail plane and body of an

aeroplane in flight.

- See Cowley, W. L.: The stresses in the members of aeroplane bodies and fuselages, due to the aerodynamical loads on the tail system. Part 1.

- See Ebner, A.: Luftverkehr und Flugzeugbau im zukünftigen England.

- See Eisenlohr, Roland: Die konstruktiven Grundlagen der Verkehrsflugzeuge.

- See Eisenlohr, Roland: Zusammengesetzte Querschnittkonstruktion in Holz.

- See Gaule, K. G.: Der Einfluss der wissenschaftlichen Forschung auf die Konstruktion der Flugzeuge.

- See Hanby, Wilfred: Metals in aircraft construction.

- See Junkers, Ing. H.: Personal experiences in constructing metal airplanes.

- See Lanchester, F. W.: Torsional vibrations of the tail of an aeroplane.

- See Mantelburger, Josef: Der Flugzeug-Modellbau.

- See Münk, Max: Die Windstromanlage des Luftschiffbau.

- See S. W. S. CL: Das Militärflugzeug der Schweiz Wagonfabrik Schlieren.

- See Schumacher, N.: Zum Weg dem wirtschaftlichen Flugzeug.

"Contact" (Alan Bott). Eastern nights and flights.

London and Edinburgh, Wm. Blackwood & Sons, 1920.

Contests. Beschluss des Preisgerichtes im Rhön-Segelflug-Wettbewerb 1921. Flugsport, 13. Jahrg., Nr. 18 (31. Aug. 1921), Frankfurt, pp. 403-407, ill.

- Englisches Luft-Derby.

Flugsport, 13. Jahrg., Nr. 16 (3. Aug. 1921), Frankfurt, pp. 358-359, ill.

- Das Ergebnis des Wettbewerbs zur Hebung der Sicherheit auf Verkehrsluftfahrten.

Flugsport, 13. Jahrg., Nr. 17 (17. Aug. 1921), Frankfurt, pp. 379-385, ill.

- Das Ergebnis des Wettbewerbs zur Hebung der Sicherheit auf Verkehrsluftfahrten (40,000 Mark-Preis).

Luftweg, Nr. 31-32 (11. Aug. 1921), Berlin, pp. 237-240.

- Fifty college fliers contest in the air.

The Naviator, Vol. 1, No. 14 (May 15, 1920), Pensacola, Via., pp. 1, 8.

Contests. Rhön-Segelflug-Wettbewerb, 1921.

Flugsport, 13. Jahrg., Nr. 3, 9, 11 (2. Fob., 27. Apr., 6. July 1921), Frankfurt, pp. 53-57, 192195, 318-322.

- Vom Wettbewerb.

Flugsport, 13. Jahrg., 1921, Frankfurt, pp. 375-379, 394-102, ill.

- See Eberhard, W.: Rhön-Segelflug-Wettbewerb 1921.

---See Jacques Schneider: Jacques Schneider cup regulations for the 1921 contest.

- See Pulitzer trophy: Rules for the second annual contest for the Pulitzer

trophy.

- See Regulations: Changes of regulations for air records and contests.

Continental. On Continental affairs.

'The Aeroplane, Vol. 20, No. 13 (Mar. 30, 1921), London, pp. 293-290.

Contour. See Wilson, Latimer J.: Contour chasing as a sport and how it seemed to a lover of the ground.

Contracts. Coordination of Army and Navy practices in regard to experimental contracts for aircraft.

Aerial Age, Vol. 13, No. 3 (Mar. 28, 1921), New York, pp. 56-57.

Control. Diagonal axis control aeroplane.

Aerial Age, Vol. 10, No. 12 (Jan. 5, 1920), London, p. 439, ill.

- Experiments on the possible rate at which a pilot can pull back the control

column in an aeroplane.

Tech. Kept. Advis. Cora. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 479-481, ill.

-• The Inter-Allied Commission of Aeronautical Control again.

The Aeroplane, Vol. 29, No. 6 (Feb. 9, 1921), London, pp. 143-144.

- Lateral control of various aeroplanes.

Tech. Kept. Advis Corn. Aeronautics, 3917-18, Vol. 2, London, 1921, pp. 702-705, diagr.

- New aeromarine control.

Aviation, Vol. 8, No. 4 (Mar. 15, 1920), New York, p. 151, ill.

- A new automatic control.

Acr. Eng. Supp!. The Aeroplane, Vol. 20, No. 5 (Feb. 2, 1921), Loudon, p. 116.

---Sand teat of flying boat controls.

Aviation, Vol. 9, No. 11 (Nov. 29,1920), New York, pp. 350-352, ill.

- See Bryant, L. W., and H. B. Irving: Experiments on the effect of altering the

position of the hinges of the elevators for the B. E. 2c aeroplane.

- See Bryant, L. W., and H. B. Irving: Tests of a model of E. E. 4 body and tail.

--See Bryant, L. W., and H. B. Irving: Tests of a model of F. E; 4 body with a

modified tail system.

---- See Bryant, L. W., and H. B. Irving: Tests of the yawing moment on a model

of the B. E. 2c machine at small angles of yaw.

- See Cowley, W. L., L. F. G. Simmons, and J. D. Coales: The effect of balancing

a rudder, by placing the rudder axis behind the leading edge, upon the controlling moment on the machine.

- See Glauert, H.: The longitudinal control of an aeroplane.

- See Griffiths, E. A., and C. II. Powell: Influence of a small body placed on an

aeroplane wing at its center.

—■— See Irving, H. B.: The design of aeroplane control surfaces, with special reference to balancing.

Control. See Norton, Frederick Harwood: Practical stability and controllability of airplanes.

--See Pannell, J. R., and N. R. Campbell: The balancing of wing flaps.

—■— See Pannell, J. R., and N. R. Campbell: Design of fins for the body of R. E. 8.

- See Reif, E. F.: Tests on a model of the body of B. E. 9, having a car for mounting a gun in front of the propeller.

- «See Wing, Pv. N.: Balanced control surfaces on aircraft.

Conventions. U. S. signs air navigation convention.

Aircraft Journal, Vol. G, No. 25 (June 21,1920), New York, p. 4.

Cook, Louis H. «See Zahm, Albert Francis: . . . Airplane stress analysis.

Coontz, Robert E. «See United States Congress. House. Committee on Naval Affairs: Naval policy of the United States.

Copland, Harry D. Aerial advertising from Maine to Florida.

Aerial Age, Vol. 13, No. 1 (Mar. 14,1921), New York, p. 7, ill.

Corbett, Cyril Dudley Hely. See Great Britain. Privy Council. Medical Research Council: The medical problems of flying . . .

Cornell University. See Barnard, W. N.: U. S. Army school of military aeronautics at Cornell University.

Cooling. «See Engines: The air cooling of petrol engines.

Cornthwaite, H. G. Altitude determinations based on barometric readings. Monthly Weather Review, Vol. 48, No. 2 (Feb. 1920), Washington, pp. 8-7-SS.

Corrosion. Methods for preventing the corrosion of metal parts of aeroplanes. Aerial Age, Vol. 13, No. 16 (June 27, 1921). New York, pp. 369-370.

Cosmos. The Cosmos 100-horsepower "Lucifer" engine. Flight, Vol. 12, No. 2 (Jan. 8,1920), Loudon, p. 40.

—■— -See Bourdon, M. W.: Cosmos radial airplane engine designed in England.

Cossira, Henry. Un dirigeable a traversé l'Atlantique en 1838: mais . . . c'était un canard d'Edgard Poe.

Vie Aérienne, 5<- année, No. 7 (1S sept. 1920), l'aris, pp. 101-102, ill.

Cost. The cost of air travel.

A-dation, Vol. 9, No. 7 (Nov. 1, 1920), New York, p. 231.

---The cost of running an aeroplane.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 12 (Sept. 21, 1921), London, p. 260.

- Cost of war aviation only §589,090,781.

Aviation, Vol. 10, No. 16 (Apr. 18, 1921), New York, pp. 1SS-191.

--What $598,090,781 bought in war aviation.

Aviation, Vol. 10, No. 17 (Apr. 25, 1921), New York, pp. 521-525.

- «See Baumann, Alexander: Die Kosten der Luftreise.

----See Stout, William B.: Operation costs of air lines.

Costume. See Fromentin, j.: Inventions.

Cotton. .Sec Taylor, Fred., and Drayton, Edwin Earle: . . . Manufacturing and laboratory teste to produce an improved cotton airplane fabric.

Cotton fields. «See Agriculture: Raidiug outlaw cotton fields by airplane.

- «See Moulton, R. H.: Detective aeroplane for discovering forest fires and outlaw

cotton fields.

98

BIBLIOGRAPHY- OF AERONAUTICS, 1920-1921.

Coupet. L'opinion d'un pilote sur le vol sans moteur.

L'Aérophile, 29 année, Nos. 2-3 (1«'-15 févr. 1921), Paris, p. xxi.

Courquin, A., et G. Serre. Cours d'aérodynamique pratique à l'usage des pilots et mécaniciens-aviateurs.

Paris, Gauthier-Villars et Cie., 1920, pp. 151, ill.

Reviewed in : Aéronautique, 1' année, No. 12 (mai 1920), Paris, p. 549.

Courquin, A., et G. Dubédat. Technique et pratique de la magneto à haute tension.

Paris, 1920, Gauthier-Villars et Cie., pp. 110, ill.

Reviewed in: Aéronautique, l' année, No. 12 (mai 1920), Paris, p. 549.

Courtney, F. T. Air brakes and the sideslip landing.

Flight, Vol. 12, No. 14 (Apr. 1, 1920), London, pp. 368-309, diagr.

Courtois-Supfit, 11. L'indicateur de stabilité R. Courtois-Suffit.

L'Aërophilc, 29 année, Nos. 11-12 (1«-15 juin 1921), Paris, pp. 164-165, ill.

- See Concours de l'union pour la sécurité en aéroplane. Premiers résultats du

concours de 1921.—Les appareils primés.

Couturier, Roger. L'aviation aux État-Unis.

Aéronautique, 2« année, No. 14 (juil. 1920), Paris, pp. 73-78, ill.

- L'avion de marine.

LAérophile, 29 année, Nos. 2-3, 9-10,11-12, (1™-15 févr., 1»-15 juin 1921), Paris, pp. 38-41, 149-152, 174-177, ill.

- L'avion métallique en Allemagne.

Aéronautique, 3= année, No. 24 (mai 1921), Paris, pp. 194-200; 249-251, ill.

- Les avions Fokker.

Aéronautique, 1= année, No. 11, (avr. 1920), Paris, pp. 476-478, ill.

- Le gros dirigeable pour le transport civil.

L'Aérophile, 29 année, Nos. 7-8 (1«M5 avr. 1921), Paris, pp. 114-118, ill.

---L'hydravion monoplan "Vau Berkels."

L'Aérophile, 29' année, Nos. 17-18 (1"-15 sept. 1921), Paris, p. XVIII, ill.

- Le monoplan commercial "Fokker F-III."

Aéronautique, 3= année, No. 26 (juil. 1921), Paris, pp. 286-288.

- Le moteur liberty.

Aéronautique, 3» année, No. 23 (avr. 1922), Paris, pp. 152-158, ill.

--Ou en est l'aviation commerciale?

L'Aérophile, 29' Année, Nos. 21-22 (1"-13 nov. 1921), Paris, pp. 322-332, ill.

- Quelques nouveaux types d'avions.

Aéronautique, 3= année, No. 28 (sept. 1921), Paris, pp. 366-307.

Cowley, Wiluam Lewis, and Hyman Levy. Aerofoils for airscrew design.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 277-295.

- Aeronautics in theory and experiment.

Loudon, Edward Arnold, 1920, pp. xi, 331, ill., diagrs.

Koviowed in: Aeronautics, Vol. 19, No. 370 (Nov. 18, 1920), London, p. 361.

------- Critical loading of similar structures.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 192], pp. 796-802.

Critical loading of struts and structures.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 763-795, ili.

Economic flight of an aeroplane in a wind.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, Loudon, 1921, pp. 1100-1162, diagrs.

Cowley, William Lewis, L. F. G. Simmons, and J. D. Coales. The effect of balancing a rudder, by placing the rudder axis behind the leading edge, upon the controlling moment on the machine.

Tech. Eept. Advis. Com. Aeronautics, 1016-17, Vol. 1, London, 1920, pp. 151-150.

Cowley, William Lewis, and H. Levy. Forces and moments on R. A. F. 14 for negative angles of attack.

Tech. Eept. Advis. Com. Aeronautics, 1917-18, Vol. 1, London, 1921, pp. 172-173.

Cowley, William Lewis, L. F. G. Simmons, and J. D. Coales. An investigation to determine the best shape of fairing piece for a cylindrical strut.

Tech. Rept. Advis. Com. Aeronautics, 1910-17, Vol. 1, London, 1920, pp. 167-175, diagr.

Cowley, William Lewis., and Hyman Levy'. Stresses in a loaded rigid structure with special reference to redundances.

Tech. Rcpt. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, 803-S17, ill.

Cowley, William Lewis. The stresses in the members of aeroplane bodies and fuselages, due to the aerodynamical loads of the tail system. Part 1.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 47L-I7S, diagr.

Cowley, William Lewis, and H. Levy. Tests on a highly cambered aerofoil.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 1, London, 1921, pp. 159-161.

Cowley, William Lewis, and L. F. G. Simmons. Tests on model aerofoil of R. A. F. 14 section, to compare an aerofoil of uniform section with one modified to represent the sag in the fabric of an actual wing.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 112-117.

Cowley, William Lewis, L. G. Simmons, and J. D. Coales. Tests on the complete model of F. E. 5 aeroplane.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 117-143, diagr.

Cowley, William Lewis, and H. Levy. Triplane investigation with R. A. F. 15 section.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 1, London, 1921, pp. 192-197.

Cowley, William Lewis, and J. D. Coales. Wind forces on aeroplane wires of various sections.

Tech. Eept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 181-194.

Cowley, William Lewis. See Bryant, L. W., H. B. Irving, and W. L. Cowley: Tests of a model seaplane.

- See Jones, R., W. L. Cowley, and J. IX Coales: The direction and velocity of

How behind a strut.

- See Simmons, L. F. G., and W. L. Cowley: Report on the aerodynamic properties of seaplane floats. Part I. The Blackburn float. Part II. The Air Department main float for the Short seaplane.

Cowling. New safety cowling designed to eliminate injury to face.

Aerial Age, Vol. 11, No. 17 (July 5,1920), New York, p. 583, ill., diagr.

Cox-Klemin. Cox-Klemin Corporation rebuilds Standard J-l.

TJ. S. Air Service, Vol. 6, No. 2 (Sept. 1921), New York, p. 27, ill.

--Cox-Klemin rebuilds Standard with Mercedes motor.

Aerial Age, Vol. 14, No. 2 (Sept. 19, 1921), New York, p. 31, ill.

Cragoe, C. S. Temperatures in spark plugs having steel and brass shells.

Fifth Annual Report of National Advisory Committee for Aeronautics, 'Washington, 1920, pp. 71-76, ill.

Crane, H. C. See Parkin, J. H., and H. C. Crane: Wind tuunel construction. Cranking. See Gaulois, G.: Cranking airplane propellers with a flask of air.

BIBLIOGRAPHY OF AERONAUTICS, 1ÍI20-1921.

Ckaxwell. At Cranwell training center.

Flight, Vol. 12, No. 38 (Sept. 16, 1920), London, pp. 993-995, ill.

--En el campo de aprendizaje de Cranwell.

Tohtli, año 5, Num. 4 (nov.-dic. 1920), México, p. 209.

- The R. A. F. training school. A visit to Cranwell.

Aeronautics, Vol. 19, No. 360 (Sept. 9, 1920), London, p. 192.

Craven, T. T. Aviation estimates before Naval Committee.

Aviation, Vol. 10, No. 4 (Jan. 24, 1921), New York, pp. 104-103.

- Naval air service independence.

Aviation, Vol. 10, No. 10 (Mar. 7, 1921), New York, pp. 304-305, ill.

- Naval aviation and a united air service.

living, Vol. 10, No. 3 (Apr. 1921), New York, pp. 96-100, ill.

United States Naval Institute, Proceedings, No. 217, Vol. 47, No. 3 (Mar. 1921), Annapolis, Md., pp. 307-321, ill.

Crawford. The Crawford sport plane.

Aviation, Vol. 8, No. 7 (May 1, 1920), New York, p. 292, ill.

Creed, G. The "What is it? "

Aeronautics, Vol. 19, No. 361 (Sept. 16, 1920), London, p. 216.

Crehore, A. C. Planetary attraction and the helium atom.

Journal of Electricity, Vol. 44 (Apr. 1, 1920), San Francisco, pp. 325-326.

Crestani, Giovanni. II vento nella stratosfera.

L'Aeronautica, anno 3, Num. 5-6 (luglio-agosto 1920), Roma, p. 232.

Crissy Field. Crissy Field, San Francisco, Calif.

Aviation, Vol. 11, No. 15 (Oct. 10,1921), New York, p. 428, ill.

Crocetti, Enrico. Las garras del águila.

Tohtli, año 5, Num. 4 (nov.-dic. 1920), México, pp. 213-211.

Crocker, Francis Bacon. The Hewitt-Crocker helicopter.

Aerial Age, Vol. 12, Nos. 11-12 (Nov. 22-29, 1920), New York, pp. 295-297, 323-325, ill, diagr. Aeronautics. Vol. 19, Nos. 374-375 (Dec. 16-23, 1920), London, pp. 441-442, 457-459, ill.

Cromwell. Cromwell's brother-in-law had original ideas on flying. Literary Digest, Vol. 65 (May 15, 1920), New York. pp. 66-6?.

Crook, L. II. See Zahm, Albert Francis: Airplane stress analysis. With problems and diagrams by L. H. Crook.

Cross arm. See Zahm, Albert Francis: Cross-arm wind balance.

Grouse, G. B. Principles of the gyrocompass.

Mechanical Engineering, Vol. 42 (Nov. 1920), New Yrork, pp. 619-623, ill., diagr.

Crouvezier, G. Cerf-volisme.

L'Aérophile, 2S année, Nos. 3/4 (lcr-15 févr. 1920), Paris, pp. xviii-xix, ill.

Crowell, Benedict, and Robert Forest Wilson. The armies of industry. Vols. 1 and 2.

New Haven, Y'ale University Press, 1921, pp. xxviii, 738, ill.

Crowell, B., and D. Wilhelm. Clipping the wings of the eagle.

Saturday Evening Post, Vol. 192 (Aug. li, 1920), Philadelphia, pp. 18-19, ill.

Croydon. Croydon terminal aerodrome.

Flight, Vol. 13 (1921), London, pp. 261, 309, 330, 315, 360, 377, 618.

- Croydon to Turin in 9J hours. The wonderful flight of the Avro Baby.

Flight, Vol. 12, No. 24 (June 10, 1920), London, pp. 614-615, ill.

- The first Croydon meeting.

Flight, No. 605, Vol. 13, No. 38 (Sept. 22, 1921), London, pp. 627, 631-632, ill.

Croydon. On the first Croydon race meeting.

The Aeroplane, Vol. 21, No. 12 (Sept. 21,1921), London, pp. 249-251, ill.

-- -See Races: The Paris to Croydon and back race.

Cuba. Air mail service to Cuba in operation.

The Naviator, Vol. 1, No. 37 (Dec. 4,1920), Pensacola, Fia., p. 1.

- Les français a Cuba.

Vie Aérienne, No. 168 (29 janv. 1920), Paris, p. 931, ill.

—— See Commercial aeronautics: Air line to Cuba.

Culver, C. C. What a pilot has to watch.

Aviation, Vol. 10, No. 6 (Feb. 7,1921), New York, p. 177, ill.

Citrry, Charles F. The necessity for a department of aeronautics. V. S. Air Service, Vol. 5, No. 2 (Mar. 1921), New York, pp. 28-29.

Curtiss. Curtiss aeroplanes (Prosecution) (14/6/21).

Aeronautics, Vol. 20, n. s., No. 401 (June 23, 1921), London, p. 460.

- The Curtiss "Eagle."

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 5 (Feb. 4, 1920), London, p. 272, ill. Aeronautics, Vol. 18, No. 334 (Mar. 11, 1920), London, p. 222, ill. Flight, Vol. 12, No. 2 (Jan. 8,1920), London, p. 55, ill.

- The Curtiss Liberty-engined Eagle.

Aviation, Vol. 9, No. 15 (Dec. 27, 1920), Now York, p. 4S3, ill.

- The Curtiss model CD-12 400-horsepower aeronautical engine.

Aerial Age, Vol. 14, No. 12 (Nov. 28, 1921), New York, pp. 273-276, ill., diagr.

- The Curtiss twelve.

Aeronautics, Vol. 18, No. 338 (Apr. S, 1920), London, p. 296.

- Curtiss wins suit.

Aerial Age, Vol. 14, No. 16 (Dee. 26, 1921), New York, p. 364.

- How to build a flying scale model of the Curtiss 18-T triplane.

Aerial Age, Vol. 13, No. 26, Vol. 14, No. 1 (Sept. 5-12, 1921), New York, pp. 623; 17, ill.

- The new Curtiss Eagle cabin plane.

Aviation, Vol. 8, No. 3 (Mar. 1,1920), New York,pp. 98-99, ill.

--Opening of Curtiss flying field.

Aviation, Vol. 10, No. 21 (May 23,1921), New York, p. 655, ill.

- The trials of the new Curtiss Eagle.

Aircraft Journal, Vol. 7, No. 15 (Oct. 11, 1920), New York, pp. 7-S, ill.

- Von der New Yorker Luftfahrtausstellung.

Flugsport, 12. Jahrg., N. 9 (28. April 1920), Frankfurt a. M., pp. 189-191, ill.

- -See Chase, H.: Curtiss Navy racer which won the Pulitzer trophy.

- -See Engines: Curtiss C-6 engine has improved cylinder block and heavier

crank shaft.

- -See Fromentin, J.: Les avions Curtiss.

- -See Gordon Bennett: The Gordon Bennett. Interesting Curtiss entry.

- -See Keys, C. M.: Les établissements d'aviation Curtiss.

Curtiss, Glenn Hammond. Glenn Hammond Curtiss. A biography. Aviation, Vol. 10, No. 26 (June 27, 1921), New York, pp. 803-806, ill.

- The Langley machine at Hammondsport.

U. S. Air Service, Vol. 6, No. 5 (Dee. 1921), New York, p. 29.

- Un mot sur les pilotes.

Vie Aérienne, No. 172 (26 févr. 1920), Paris pp. 99.8-999, ill.

Curtiss, Glenn Hammond. See Brewer, Griffith: The Langley machine and the Hammondsport trials.

Ourtiss Aeroplane and Motor Corporation. The Curtiss Eagle. New York, 1920, pp. 8, ill.

- The Curtiss "JN."

New York, 1920, pp. 8, ill.

- The Curtiss Model K-6 aeronautical motor.

New York, 1920, pp. 4, ill.

—— The Curtiss model K-12 aeronautical motor.

New York, 1920, pp. 8, ill.

- The Curtiss model OX-5 aeronautical motor

New York, 1920, pp. 8, ill.

- The Curtiss "Oriole."

New York, 1920, pp. 8, ill.

- The Curtiss OX-motored standard J-l.

New York, 1920, pp. 8, ill.

- Curtiss works closed down.

Aeronautics, Vol. 19, No. 351 (July 8, 1920), London, p. 26.

- Every-day uses of the aeroplane.

New York, 1920, The Curtiss Aeroplane and Motor Corporation, pp. 16, ill.

- See Keys, C. M.: The Curtiss Corporation after the war.

Customs. Import duty on aircraft material.

Aeronautics, Vol. 20, n. s., No. 387 (Mar. 17, 1921), London, p. 185.

- Monthly reports of imports and exports by air.

Flight, No. 628, Vol. 13, No. 1 (Jan. 6,1921), London, p. 6.

- Report of imports and exports by air.

Flight, No. 634, Vol. 13, No. 7 (Feb. 17,1921), London, p. 110.

- See France: French customs regulations.

- See Switzerland: Air navigation on and above Swiss waters; Geneva customs

aerodrome.

Cylinders. See Dryden, H. L.: Air forces on circular cylinders, axes normal to the wind, with special reference to dynamical similarity.

Czechoslovakia. Enter Czechoslovakia.

Flight, Vol. 12, No. 46 (Nov. 11, 1920), London, pp. 1167-1170, ill.

- The second Czech international aero exhibition.

Flight, No. 676, Vol. 13, No. 49 (Dec. 8,1921), London, p. 815, ill.

D.

D., G. On air lines.

The Aeroplane, Vol. 19, No. 10 (Sept. 8,1920), London, p. 473.

D.H. The D. H. 18-limousine, 450-horsepower Napier Lion engine.

Flight, No. 639, Vol. 13, No. 12 (Mar. 21,1921), London, pp. 203-206, ill.

D., H. Transport, tourisme et sport en avion.

Vie Aérienne, No. 189 (24 juin 1920), Paris, pp. 1202-1203, ill.

- The D. H. 29 monoplane. 450-horsepower Napier "Lion" engine.

Flight, No. 666, Vol. 13, No. 39 (Sept. 29,1921), London, pp. 641-647, ill.

- The D. H. 32 commercial biplane. 360-horeepower Rolls-Royce engine.

Flight, No. 665, Vol. 13, No. 38 (Sept. 22, 1921), London, pp. 629-630, ill.

D. H. Verkehrsflugzeug D. H. 13.

Flugsport, 13. Jahrg., Nr. 9 (27. Apr. 1921), Frankfurt, pp. 190-192, ill.

- See Cantilever: The D. H. cantilever monoplane.

—— See Haviland Aircraft Co.: The D. H. cantilever monoplanes.

- Climb of service type DH tested at Langley.

Journ. Soc. Automotive Engineers, Vol. 6, No. 6 (June 1920), New York, p. 127.

DH-4. Report of static test of the landing chassis of DH-4—P-34.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 38 (May 8, 1920), Washington, Government Printing Office, pp. 8, ill.

D. F. W. The D. F. W. giant biplane.

Aeronautics, Vol. 18, No. 334 (Mar. 11, 1920), London, pp. 215-217, ill.

- See Hildesheim, Erik: Recent D. F. W. aeroplanes.

Daily Express prize. Le prix du "Daily Express."

La Conq. l'Air, 3= année, No. 5 (1« mars 1920), Bruxelles, pp. 52-53.

Daimler. Austro-Daimler-Flugzeugmotoren.

Mitt. Oesterr. Aéro-Clubs, Nr. 9 (1. Sept. 1910), Wien, pp. 110-119, ill.

-■ The German Daimler airplane L-14.

Aviation, Vol. 8, No. 4 (Mar. 15, 1920), New York, p. 157, ill.

- See Noack, W. G.: Tests of the Daimler D-IVa engine at a high-altitude test

bench.

Daingerfield, Lawrence H. Aerological observations during airplane flight above Hawaiian Islands.

Monthly Weather Beview, Vol. 48, No. 2 (Feb. 1920), Washington, p. 87.

Dalby, W. E. Researches on the elastic properties and plastic extension of metals.

Philosophical Transactions, Royal Society of London, Ser. A, Vol. 221. A585 (Sept. 9, 1920), London, pp. 117-138, ill.

Dallas, Tex. Dallas organizes aerial police.

Aerial Age, Vol. 14, No, 8 (Oct. 31,1921), New York, p. 175, ill.

Dalsace, A. La descente en flammes. Ses causes—ses remèdes.

L'Aérophile, 28 année, Nos. 3/4 (ler-15 fév.r 1920), Paris, pp. 48-49.

- A propos des avions géants allemands.

L'Aérophile, 28 année, Nos. 5/6 (l«r-15 mars 1920), Paris, pp. 76-77.

- À propos des réservoirs a vidange rapide.

L'Aérophile, 28 année, Nos. 5/6 (1«-15 mars 1920), Paris, p. 77.

Damblanc. The Damblanc helicopter.

Aeronautics, Vol. 18, No. 326 (Jan. 15, 1920), London, p. 66, ill.

- M. Damblanc on the helicopter.

Aer. Eng. Suppl. The Aeroplane, Vol. 19. No. 21 (Nov. 24, 1920), London, pp. 822, 824.

- Le parachute-hélicoptère de M. Damblanc.

L'Aérophile, 29 année, Nos. 1-2 (1«-1S janv. 1921), Paris, p. 29.

Damblanc, Louis. Les hélicoptères et les laboratoires d'essais.

L'Aérophile, 28 année, Nos. 19-20 (1»-15 oct. 1920), Paris, pp. 314-315.

- The problem of the helicopter.

Aëron. Journ., Vol. 25, No. 121 (Jan. 1921), Loudon, pp. 3-19, diagrs.

Aeronautics, Vol 19, No. 371-372 (Nov. 25-Dec. 2, 1920), London, pp. 379-381, 392-394.

Flight, Vol. 12, No. 48 (Nov. 25, 1920), London, pp. 1219-1223, ill.

- Les vols aux grandes altitudes et les moteurs a compression variable.

Vie Aérienne, No. 176 (25 mars 1920), Paris, pp. 1055-1058, ill.

- See Saladin, Raymond: Étude générale sur l'hélicoptère.

Danielou, M. T. S. F. et navigation aérienne.

L Aéronautique, 2« année, No. IS (nov.-dée. 1020), Paris, pp. 233-238, ill.

Dander, Mario Mele. Airman's international dictionary. London, Charles Griitin & Co., Ltd., 1920, pp. 22S.

- International dictionary of aeronavigation.

Milan, Ulrico Hoepll, 1920, pp. 171.

Daniels, Josephtjs. Daniels on small aviation appropriation.

Aircraft Journal, Vol. 6, No. 25 (June 21, 1920), New York, p. 15.

- Report of Secretary of the Navy on Air Service.

The Naviator, Vol. 1, No. 39 (Dee. 18, 1920), Ponsacola, Fia., pp. 1-2.

- Secretary Daniels on aeronautics.

Aviation, Vol. 9, No. 13 (Dec. 13, 1920), New York, pp. 414-416, ill.

- Secretary Daniels protests to House Committee on Military Affairs and Secretary Baker against assertions of Army officers.

Aerial Age. Vol. 10, No. 13 (Jan. 12, 1920), New York, pp. 490, 496, 499.

- Secretary Daniels urges aeronautic development.

Aerial Age, Vol. 12, No. 25 (Feb. 28, 1921), New York, p. 627.

- See Tinker, Clifford Albion: Josephus Daniels and the medal muddle.

Dark. Detecting aeroplanes in the dark.

Aeronautics, Vol. 19, No. 360 (Sept. 9, 1920), London, p. 201.

Darts. See Taylor, G. I.: The Wilbur Wright lecture. Scientific methods in aeronautics.

Darwin, Horace, and C. 0. Mason. Effect of wind on the time of flight from one place to another and back again.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 1154-1156, diagr.

- Static head-turn indicator for aeroplanes.

Scient. Amer. Suppl., Vol. 88 (Nov. 29,1919), New York, pp. 322-323. Aviation. Vol. 7 (Dec. 1, 1919), New York, pp. 389-390.

David, W. T. The internal energy of inflammable mixtures of coal gas and air after explosion.

Proc. Roy. Soc., Ser. A, Vol. 98, No. A692 (Jan. 3,1921), London, pp. 303-318, diagr.

- Radiation of explosions of hydrogen and air.

Proc. Roy. Soc, Ser. A, Vol. 98, No. A690 (Nov. 3, 1920), London, pp. 198, ill. Reviewed by: G. F. S. in Journal of the Franklin Institute, Vol. 191, No. 3 (Mar. 1921), Philadelphia, p. 439.

Davidson and Bacon. The determination of the effective resistance of a spindle supporting a model aerofoil.

Technical Notes, National Advisory Committee for Aeronautics, No. 37, Jan. 1921, Washington (mim.), pp. 4, diagrs.

Davies, J. Hudson. See Kaye, G. W. C, and J. Hudson Davies: An investigation into various types of timber splices for aeroplane construction.

Davis, A. H. The heat loss by convection from wires in a stream of air, and its relation to the mechanical resistance.

London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, Vol. 41, No. 246 (June 1921), London, pp. S99-907, ill.

Davis; J. W. Helium; methods evolved under the stimulus of war to be applied to commercial production.

Engineering and Mining Journal, Vol. 109 (Jan. 10, 1920), New York, pp. 84-85.

Davis, W. Jefferson. Laws of the air.

U. S. Air Service, Vol. 4, No. 5 (Dec. 1920), New York, pp. 17-20.

- Legal aspect of Federal air legislation.

Aviation, Vol. 11, No. 22 (Nov. 28, 1921), New York, pp. 627-628.

- San Diego—the West Point-Annapolis of the air.

U. S. Air Service, Vol. 3, No. 6 (July 1920), New York, pp. 25-26, diagr.

Davis-Douglas. The Davis-Douglas "Cloudster."

Aerial Age, Vol. 12, No. 11 (Nov. 22, 1920), New York, p. 297, diagr.

- Davis-Douglas receives Government contract.

The Ace, Vol 2, No. 9, (June 1921), Lor. Angeles, p. 11.

Dawson, A. Trevor. The commercial airship; its operation and construction.

Proceedings of the Air Conference, 1920, with appendices, London, H. M. Stationery Office, 1920, pp. 110-133.

Aeronautics, Vol. 19, No. 367 (Oct. 28, 1920), London, pp. 303-306, ill. Engineer, Vol. 130 (Oct. 29-Nov. 19,1920), London, pp. 433, 501-502. Engineering, Vol. 110 (Oct. 22, 1920), London, pp. 531-532, 558-560. Flight, Vol. 12, Nos. 42, 46 (Oct. 14, Nov. 11, 1920), London, pp. 1073, 1173-1177. Flying, Vol. 9 (Dec. 1920), New York, pp. 665-673, ‘11., map.

- See Pratt, H. B.: Commercial airships; with an introduction by Sir A. Trevor

Dawson.

Daynes, H.A. See Further applications of the katharometer.—By Dr. G. A. Shake-spear; with an investigation of some sources of error in the testing of fabrics. By H. A. Daynes.

- See Shakespear, G. A., and H. A. Daynes. On the diffusion of hydrogen along

the textile of balloon fabrics, with special reference to the effect of lateral leakage of seams.

Dayton-Wright. The Dayton-Wright R. B. racer.

Aviation, Vol. 9, No. 6 (Oct. 15, 1920), New York, p. 190, ill.

- The Dayton-Wright model FP-2 seaplane.

Aviation, Vol. 11, No. 22 (Nov. 28, 1921), New York, pp. 625-626, ill.

- Dayton-Wright "F. P. 2" survey seaplane.

Flight, No. 679, Vol. 13, No. 52 (Dec. 29,1921), London, pp. 857-858, ill.

—— Der Day ton-Wright Flügel.

Flugsport, 13. Jahrg., Nr. 14 (6. Juli 1921), Frankfurt, pp. 306.

-■ Der Dayton-Wright RB Racer.

Flugwelt, 2. Jahrg., 25. Heft (S. Dez, 1920), Leipzig, pp. 614-615, ill.

- The new Dayton-Wright wing.

Flight, No. 664, Vol. 13, No. 37 (Sept. 15,1921), London, p. 614.

——■ See Fromentin, J.: Les avions commerciaux aux Etats-LTnis.

-• See Gordon-Bennett: Dayton-Wright challenger for the G. B. cup.

De H. 14. The De H. 14 day-bomber. 600-horsepower Rolls-Royce "Condor" engine.

Flight, No. 629, Vol. 13, No. 2 (Jan. 13, 1921), London, pp. 23-25, ill.

De Haviland. DH-4 emergency flotation gear.

Aviation, Vol.. 11, No. 4 (July 25, 1921), New York, p. 103, ill.

--DH-14 bomber.

Aerial Age, Vol. 13, No. 7 (Apr. 25, 1921), New York, p. 158.

----- The De H-14 day bomber.

Aerial Age, Vol. 13, No. 8 (May 2,1921), New York, p. 182.

44439—25-8

Db Haviland. The DII-18 limousine.

Aerial Age, Vol. 13, No. 10 (May 16, 1921), New York, p. 230.

- The DH-29 commercial monoplane.

Aviation, Vol. 11, No. 22 (Nov. 2S, 1921), New York, pp. 031-632, diagr.

- De Haviland aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 25 (Dec. 21, 1921), London, pp. 604, 608, ill., diagr.

- The De Haviland Aircraft Co.'s first product.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 6 (Feb. 9, 1921), London, pp. 136-138, ill.

- The De Haviland 18.

Aerial Age, Vol. 12, No. 19 (Jan. 17,1921), New York, p. 494.

- De Haviland on civil aviation.

Aerial Age, Vol. 12, No. 19 (Jan. 17,1921), New York, p. 486.

- The De Haviland 29 commercial monoplane.

Aer. Eng. The Aeroplane, Vol. 21, No. 14 (Oct. 5, 1921), London, pp. 299-304, ill.

- Easter Sunday and a De Haviland.

The Aeroplane, Vol. 20, No. 13 (Mar. 30, 1921), London, p. 29s.

—— Floating test of De H-4.

Aviation, Vol. 10, No. 1 (Jan. 3,1921), New York, p. 16.

- A new De Haviland passenger carrier. «

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 13 (Sept. 28,1921), London, pp. 280-282, diagr.

De Haviland, Geoffrey. De Haviland Aircraft Co. formed. Aviation, Vol. 9, No. 10 (Nov. 22, 1920), New York, pt 326.

- Pioneers of British aviation. XLIX. Capt. Geoffrey De Haviland.

Aeronautics, Vol. 19, No. 359 (Sept. 2,1920), London, pp. 183-184, ill.

De Haviland Aircraft Company. The De Haviland Aircraft Co. (Ltd.). Aeronautics, Vol. 19, No. 374 (Dec. 16, 1920), London, p. 436, ill.

- See Great Britain: Modern British aircraft.

De Lancey, W. H. What a model club can do.

Aerial Age, Vol. 14, No. 4 (Oct. 3,1921), New York, p. 87.

De Marcay, Edmond. Edmond De Marcay aeroplanes.

Aerial Age, Vol. 11, No. 26 (Sept. 6, 1920), New York, pp. 869-870, ill.

De Monge. Eindecker De Monge.

Flugsport, 13. Jahrg., Nr. 19 (14. Sept. 1921), Frankfurt, pp. 428-429, ill.

- An interesting French machine.

Aerial Age, Vol. 14, No. 10 (Nov. 14, 1921), New York, p. 221.

De Pischof. The De Pischof avionette.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 24 (Dec. 15, 1920), London, p. 908, ill., diagr. Aeronautics, Vol. 19, No. 364 (Oct. 7, 1920), London, p. 260, ill.

De Ruyter, S. In memoriam.

Vliegveld, 5e jaarg., No. 5 (26 Feb. 1921), Amsterdam, pp. 74, ill.

De Siebert, Roberto. Chief of Italian Army Air Service.

Aviation, Vol. 9, No. 10 (Nov. 22, 1920), New York, p. 330, Ul.

De Windsor, John David. Aerial metropolis of America.

The Ace, Vol. 2, No. 5 (Dec. 1920), Los Angeles, p. 9, ill.

Dean, E. W., and Clarence Netzen. An investigation of airplane fuels. Aviation, Vol. 7 No. 12 (Jan. 15,1920), New York, pp. 537-538.

Dechamps, H. Prüfung, Wertung und Weiterentwicklung von Flugmotoren. Von H. Dechamps und K. Kutzbach.

Berlin, 1921, Richard Carl Schmidt & Co., pp. 264, ill.

Reviewed in: Zeitschr. Flugt. Motorlultsch., 12. Jahrg., 17. Heft (15. Sept. 1921), München p. 265.

Decker, W. F. The story of the engine. From lever to Liberty motor. New York, Scribners, 1920, pp. xx, 277, ill.

Dedet, Jacques. Le coin du médecin.

Vie Aérienne, 1920, Paris, pp. 919, 978, 1004.

Deeds. See Barnes, John K.: The vindication of Squier and Deeds. What really happened to the billion-dollar aircraft appropriation.

Deeds, E. A. Aviation of the future.

Aircraft Journal, Vol 6, No. 8 (Feb. 21, 1920), New York, pp. 3-4, 8-9, ill.

- The future of aviation.

Mechanical Engineering, Vol. 42, No. 1 (Jan. 1920), New York, pp. 28-29. Defense. See Naef, Ernest: Notre défense aérienne. Degen, Jacob. See Caro, I.: Aviones que no volaron.

Delage, Yves. Application du tube de Pitot à la détermination de la vitesse des navires et à l'enregistrement des espaces parcourus.

C. R. Aead. Sei., T. 171, No. 15 (11 oct. 1920), Paris, pp. 646-651, ill.

Denby, Edwin B. Secretary Denby launches merchant seaplane. Aviation, Vol. 10, No. 19 (May 9,1921), New York, p. 590, ill.

Denmark. Customs aerodromes and seaplane station at Copenhagen. Flight, Vol. 12, No. 44 (Oct. 28, 1920), London, p. 1127, map.

Department of Aeronautics. See Curry, Charles F.: The necessity for a department of aeronautics.

- See Sinsheimer, A.: Another bill to establish an aeronautic department.

——■ See Sinsheimer, A.: Bill to create a department of aeronautics.

Depew, Richard LT., Jr. Civil aviation schools.

Aviation, Vol 10, No. 8 (Feb. 21,1921), New York, pp. 231-232.

Depreciation. Aircraft depreciation.

Flight, Vol. 12, No. 40 (Sept. 30, 1920), London, pp. 1039-1040.

-■ Aircraft depreciation and costs.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 16 (Oct. 20, 1920), London, pp. 678, 6S0.

Depression. See Gilles, G.: La chambre a dépression de Friedrichshafen.

Derby. Aerial derby.

Aeronautics, Vol. 19, No. 353 (July 22, 1920), London, pp. 68-69, map; Vol. 21, n. s., No. 405

(July 21, 1921), p. 45, ill. The Aeroplane, Vol. 20, No. 22 (June 1,1921), London, p. 512.

- The aerial derby and Oxford and Cambridge air race.

Aeronautics, Vol. 21, n. s., No. 404 (July 14,1921), London, pp. 22-24, ilL

- Aerial derby at a glance.

Flight, No. 655, Vol. 13, No. 28 (July 14,1921), London, pp. 472-473, ill.

- Aerial derby competitors.

The Aeroplane, Vol. 21, No. 2 (July 13,1921), London, p. 27, ill.

- The aerial derby, 1921. A fine list of entrants.

Flight, No. 655, Vol. 13, No. 28 (July 14,1921), London, pp. 468-470, ill.

Derby. The British aerial derby.

Aviation, Vol. 11, No. S (Aug. 22, 1921), New York, p. 220, ill.

- Entries for the aerial derby.

Flight, No. 654, Vol. 13, No. 27 (July 7,1921), London, p. 462.

- Impressions at the derby.

The Aeroplane, Vol. 21, No. 3 (July 20, 1921), Loudon, p. 62.

- Machines in the aerial derby.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 2 (July 13, 1921), London, pp. 31-34, ill.

- On the aerial derby.

The Aeroplane, Vol. 21, No. 2 (July 13, 1921), London, p. 25: No. 3 (July 20, 1921), pp. 4550, 61, ill.

-- The sixth aerial derby and the Oxford v. Cambridge air race.

Flight, No. 656, Vol. 13, No. 29 (July 21,1921), London, pp. 483, 485-489, ill.

- The winner of the aerial derby.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 4 (July 27, 1921), London, pp. 77-82, ill.

- The winner of the derby. Some notes on the Mars I.

Flight, No. 656, Vol. 13, No. 29 (July 21, 1921), London, pp. 400-492, ill.

- World aerial derby plans progressing.

Aerial Age, Vol. 12, No. 17 (Jan. 3,1921), New York, p. 435.

- See Lémonon, E. H.: Le Ier match aérien Oxford-Cambridge: le 6e derby

aérien de Londres.

Derivoheter. See Brion, Maurice: L'emploi du derivomètre dans le voyage aérien.

Des Gâchons, André. La prévision du temps par l'aspect du ciel et les nuages. Vie Aérienne, 5« année, No. 21 (25 dée. 1920), Paris, pp. 327-330, ill.

Desert. The desert route to the east.

The Aeroplane, Vol. 21, No. 15 (Oct. 12,1921), London, pp. 314-316.

Design. Airplane with longitudinal wings.

Illustrated World, Vol. 34 (Sept. 1920), Chicago, p. 45, ill.

- Airplanes built lengthwise.

Literary Digest, Vol. 65 (June 12, 1920), New York, p. 36, ill.

- Airplanes that are different.

Scient. Amer., Vol. 122 (Feh. 14, 1920), New York, p. 162, ill.

- Fundamental principles in aeroplane design.

Aerial Age, Vol. 14, No. 11 (Nov. 21,1921), New York, p. 243.

—— Latest designs in airplane bodies; photographs.

Country Life, Vol. 37 (Mar. 1920), Garden City, N. Y., pp. 60-61, ill.

- Longitudinal airplanes: Is it practical?

Scient. Amer., Vol. 122 (May 15, 1920), New York, p. 545, ill.

-- Our designing staffs and their future. A word of warning.

Flight, Vol. 12, No. 34 (Aug. 19, 1920), London, p. 907.

- Problems in design.

Aeronautics, Vol. 20, n. s., No. 387 (Mar. 17,1921), London, p. 187.

- Standardization in aeroplane design.

Aerial Age, Vol. 14, No. 8 (Oct. 31,1921), New York, p. 171.

- Trend of airplane design.

Automotive Industries, Vol. 42 (Jan. 15, 1920), New York, pp. 170-173, diagr.

---Wind tunnels and airplane designs.

Scient. Amer., Vol. 121 (Dec. 6,1919), New York, p. 558, ill.

Design. See Andrews, S. T. G., and Benson, S. F.: Theory and practice of aeroplane design.

- See Bairstow, Leonard, and E. F. Reif: Multiple-engined aeroplanes.

- See Bairstow, Leonard, E. F. Reif, and C. II. Powell: Notes on the performance of aeroplanes, based on a reduction of the observations made at the Central Flying School during the acceptance tests of aeroplanes.

- See Bairstow, Leonard: Notes relating to the aerodynamics of aeroplane design.

- See Bairstow, Leonard, and E. F. Reif: Proposals for experiments on aeroplanes in flight.

- See Bishop, Percy: Characteristics of design affecting production, operation,

and maintenance of aircraft. ■

- See Hill, G. T. R.: The relative effect of changes in weight and head resistance

on the performance of an aeroplane.

- See Hill, G. T. R.: The selection of the best wing section for an aeroplane with

given landing speed.

- See Thomas, G. Holt: Aeroplane design, German capacity, and our Empire's

future in the air.

Desmons, Robert. L'aviation coloniale.

Paris, Librairie Aéronautique, 1920, pp. 47, ill.

Reviewed in: Zeitscbr. Flugt. Motoruftsch., 12. Jahrg., 11. Heft (15. Juni 1921), München, p. 174.

Detroit. The Detroit aerial water derby.

Aviation, Vol. 11, No. 26 (Dec. 26, 1921), New York, pp. 743-741.

■-• Detroit air meeting. September 8-10, 1921.

Aeronautics, Vol. 20, n. s., No. 39S (June 2,1921), London, pp. 392-393.

- Great aviation field at Detroit.

The Naviator, Vol. 1, No. 23 (July 24, 1920), Pensacola, Fia., p. 4.

- Program and conditions of the Detroit aerial water derby, including the

Curtiss marine trophy, class and invitation events to be held in Detroit the first week in September, 1922.

Aerial Age, Vol. 14, No. 15 (Dec. 19,1921), New York, pp. 316-347.

Dettmar, G. Die Kennzeichnung der Freileitungen für Luftfahrer.

Elektrotechnische Zeitschrift, Vol. 40, No. 37 (11, Sept. 1919), pp. 449-452, figs.

Deutelmoser, Ferdinand. Der Flug.

Flug, 8. Jahrg., Nr. 3-4 (1. Feb. 1921), Wien, pp. 10-12, ill.

Deutsch de la Meurthe. The Coupe Deutsch.

Flight, No. 667, Vol. 13, No. 40 (Oct. 6,1921), London, p. 663.

--The Coupe Deutsch de la Meurthe. To be flown on Saturday.

Flight, No. 666, Vol. 13, No. 39 (Sept. 29, 1921), London, pp. 650-651, ill.

- The Deutsch de la Meurthe trophy.

Aerial Age Vol. 13, No. 12 (May 30,1921), New York, p. 267.

- See Bouché, Henri: La coupe Deutsch.

- See Lémonon, E! H.: La coupe internationale Deutsch de la Meurthe.

Deutsch de la Meurthe, Henry. Coupe Henry Deutsch de la Meurthe. L'Aérophile, 29 année, Nos. 13-14 (l«r-15 juil. 1921), Paris, p. 208.

Deutsch de i,a Meurthe, Henry. Coupe Henry Deutsch de la Meurthe. International contest.

Flight, No. 646, Vol. 13, No. 19 (May 12,1921), London, p. 327.

■-• The Deutsch de la Meurthe trophy race.

Aviation, Vol. 11, No. 17 (Oct. 24, 1921), New York, pp. 477-178, ill, diagr.

- Henry Deutsche de la Meurthe aviation cup.

Aviation, Vol. 11, No. 1 (July 4,1921), New York, p. 14.

- Henry Deutsch de la Meurthe international contest. General regulations.

Aeronautics, Vol. 20, n. s., No. 395 (Mav 12,1921), London, p. 335.

- See Aero Club of France: The Ae. C. F. grand prix.

Deutsche Luftfahrer-Verband. Amtliche Mitteilungen.

Flugwelt, 2. Jahrg., 26. Heft (22. Dez. 1920), Leipzig, pp. 643-644.

Deutsche Luft-Reederei. Eine million Kilometer im Luftverkehr.

Reviewed in: III. Flug-Woche, 3. Jahrg., 1. Heft (5. Jan. 1921), Leipzig, p. 17.

Development. The development of fighting aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 25 (Dec. 21, 1921), London, pp. 60S, 610.

Devillers, René. Dynamics of the aeroplane. Translated by Capt. Wm. John Walker, R. A. F.

London, E. and F. N. Spon; New York, Spon and Chamberlain, 1920, pp. 310.

•-■ La dynamique de l'avion.

Paris, E. Chiron, 1920, pp. 287, ill

Reviewed in: Zeitschr. Flugt. Motorluftsch, 12. Jahrg. 23. Heft (15. Dez. 1921), München p. 342.

•-■ Le moteur à explosions.

Paris, Dunod, 1920, 2 vols.

Reviewed in: L'Aérophile, 28 année, Nos. 9-10 (1«-15 mai 1920), Paris, p. xvvii.

- The problem of the turbo-compressor.

National Advisory Committee for Aeronautics, Technical Notes No. 11, Washington, 1920, pp. 28. Extract from "The Internal Combustion Engine." Aerial Age, Vol. 12, Nos. 4-6 (Oct. 4-18, 1920), New York, pp. 107-108, 139-141, 171-173. Aeronautics, Vol. 19, No. 361 (Sept. 16, 1920), London, p. 216.

Dibble, John. See Truby, Albert E., and John Dibble: Operation of the Medical Division of the Air Service since the signing of the armistice.

Dichman, Ernest W. Airplane cost in hydroelectric work.

Aviation, Vol. 10, No. 5 (Jan. 31, 1921), New York, pp. 134-136. Engineering and Contracting, Vol. 54 (Nov. 10, 1920), Chicago, pp. 470-471. Journal of Electricity, Vol. 45 (Oct. 15, 1920), San Francisco, pp. 360-863, ill.

Dick. Der Luftschiffbau und Schütte-Lanz.

Luftweg, Nr. 19-20 (19. Mai 1921), Berlin, pp. 148-150, ill.

Dickinson, Hobert Cutler, Victor R. Gage, and Stanwood Willston Sparrow. Comparison of hector fuel with export aviation gasoline.

National Advisory Committee for Aeronautics, Report No. 90, Washington, Government Printing Office, 1920, pp. 10, charts. Aeronautics, Vol. IS, No. 347 (June 10,1920), London, pp. 453-155, diagr.

Dickinson, Hobert Cutler, W. S. James, and R. V. C. Kleinschmidt. General analysis of airplane radiator problems.

Fifth Annual Report of National Advisory Committee for Aeronautics, Washington, 1920, pp. 215-221.

Aerial Age, Vol. 10, No. 15 (Jan. 26, 1920), New York, pp. 566-567.

Dickinson, Hobert Cutler, W. S. James, and W. B. Brown General discussion of test methods for radiators.

Fifth Annual Report of National Advisory Committee for Aeronautics, Washington, 1920, pp. 22S-244

Dickinson, Hobbrt Cutler, W. S. James, and R. V. Kleinschmidt. Heat dissipation and other properties of radiators.

Fifth Annual Report of National Advisory Committee for Aeronautics. Washington, 920, pp. 279-305, ill.

National Advisory Committee for Aeronautics, Report No. 63, Washington, Government Printing Office, 1920, pp. 34, ill.

Dickinson, Hobert Cutler, and Floyd Bell Newell. High-speed engine pressure indicator of the balanced diaphragm type.

National Advisory Committee for Aeronautics, 1920, Washington, 1921, pp. 637-64S, ill. diagrs.

National Advisory Committee for Aeronautics, Report No. 107, Washington, Government Printing Office, 1921, pp. 15, diagrs.

Dickinson, Hobert Cutler, F. B. Silsbee, and P. G. Agnew. Methods for testing spark plugs.

Fifth Annual Report of National Advisory Committee for Aeronautics, Washington, 1920, pp. 63-70, ill.

National Advisory Committee for Aeronautics, Report No. 51, Part 3, Washington, Government Printing Office, 1920, pp. 25-32, dlagr.

Dickinson, Hobert Cutler, W. S. James, E. W. Roberts, V. R. Gage, and D. R. Harper, 3d. Power characteristics of aviation gasolines.

National Advisory Committee for Aeronautics, Report No. 47, Part 1, Washington, Government Printing Office, pp. 5-13.

Dickinson, Hobert Cutler. Results of tests on radiators for aircraft engines.

National Advisory Committee for Aeronautics. Preprint from Fifth Annual Report, Washington, Government Printing Office, 1920, pp. 34, ill., diagrs.

Dickinson, Hobert Cutler, and R. V. Kleinschmidt. Synopsis of aeronautic radiator investigations for the years 1917 and 1918.

National Advisory Committee for Aeronautics, Report No. 43. Preprint from Fifth Annual Report, Washington, Government Printing Office, 1920, pp. 8. Confidentially circulated during the war as Bureau of Standards Aeronautic Power Plant Report No. 42.

Dickinson, Hobert Cutler, W. S. James, and G. V. Anderson. Variation of horsepower with altitude and compression ratio.

Aerial Age, Vol. 11, No. 2 (Mar. 22, 1920), New York, pp. 54-57.

- Variation of horsepower with temperature.

Aerial Age, Vol. 11, No. 5 (Apr. 12, 1920), New York, pp. 154-157.

Dieckmann, Max. Funkentelegraphische Ortsbestimmung fur Luftfahrzeuge. Luftfahrt: 24. Jahrg., Nr. 4 (1. Apr. 1920), Berlin, pp. 57-59, ill.

Diehl, Walter S. The determination of downwash.

Technical Notes, National Advisory Committee lor Aeronautics, No. 42 (Jan. 1921,) Washington (mim.), pp. 8, diagrs. Aerial Age, Vol. 12, No. 26 (Mar. 7,1921), New York, pp. 655-656. Aviation, Vol. 10, No. 20 (May 16,1921), New York, pp. 635-637.

- Downwash and the determination of aerodynamic angles of attack of horizontal

tail surfaces.

Aircraft Technical Note No. 191, Department of the Navy, Bureau of Construction and Repair, Washington (Dec. 15, 1920), pp. 3.

- The variation of aerofoil lift and drag coefficients with changes in size and speed.

National Advisory Committee for Aeronautics, Report No. Ill, Washington, Government Printing Office, 1921, pp. 10, diagrs. Aerial Age, Vol. 13, No. 22 (Aug. 8, 1921), New York, pp. 518-520.

Dierfeld, Benno R. The Hawa commercial triplanes.

Aerial Age, Vol. 13, No. 2 (Mar. 21, 192]), New York, pp. 34-35, ill., diagr. Aeronautics, Vol. 20, n. s., No. 393 (Apr. 28, 1921), London, p. 300, diagr.

Diesel. A German Diesel airplane engine.

Aviation, Vol. 9, No. 9 (Nov, 15, 1920), New York, pp. 2S7-2SS, ill.

Diesel. Semi-Diesel engines.

Aerial Age, Vol. 12, No. 21 (Jan. 31, 1921), New York, p. 514.

- Twin-piston Diesel engine designed for use in aircraft.

Automotive Industries, Vol. 43 (Oct. 7, 1950), New York, pp. 71S-719, ill., diagr.

Dietzius, Robert. Die Aenderung des Windes mit zunehmender Höhe.

Kitt. Oesterr. Aero-Clubs, Nr. 1-2 (1. Jan., 1. Feb. 191S), Wien, pp. S-16, 43-17, diagrs.

- Der Nebel im Herbst und Winter in Wien und Lemberg.

Mitt. Oesterr. Aëro-Clubs, 6. Jahrg.. Nr. 4 (1. April 1919), Wien, pp. 111-120, ill.

- Welche Ballastmengen sind notwendig, um den Fall eines Freiballones zu

bremsen?

Mitt Oesterr. Aëro-Clubs, Nr. 3-5 (20. März-15. Hai 1915), Wien, pp. 3-5, 9-12, 3-«.

- Westwind in der Höhe bei südöstlichem Wind unten.

Mitt. Oesterr. Aëro-Clubs, Nr. 3-D (1. März-1. Juni 1916), Wien, pp. 27-32, 39-13,56-58,65-6;. diagrs.

- Die Winde über Verona, in Oberitalien.

Mitt. Oesterr. Aëro-Clubs, Nr. 7, S (1. Juli-1. Aug. 1916), Wien, pp. 77-SO, 96-100, diagrs.

Digest. See Aeronautical digest.

Dime, Eric A. What Europe is doing in aviation—Americans, please take notice! The Naviator, Vol. 1, No. 13 (May 8, 1920), Pensacola, Fia., p. 7. Scient. Amer., Vol. 122 (May 1, 1920), New York, p. 489, ill.

Dines, W. H. Table of temperature, pressure and density at different levels up to 20 kilometers.

Tech. Sept. Advis. Com. Aeronauties, 1917-18, Vol. 3, London, 1921, p. 1134.

Direction. Radiogoniomètres de bord.

Bulletin Technique du Bureau Veritas, Vol. 1, No. 7 (dec. 1919), pp. 114-11S, figs.

- Direction finding in relation to aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 14 (Apr. 7, 1920), London, pp. 728, 730, ill.

--See Bellini-Tosi: Direction and position finding. The Bellini-Tosi system.

——• See Kolster: Kolster's direction finder.

- See Morris. J.: The sense of direction.

Directory. The aeronautical directory of the world.

London, The Aeroplane and General Publishing Co., 1920, pp. 207.

Dirigibles. Airship performance facts.

The Ace, Vol. 2, No. 4 (Nov. 1920), Los Angeles, p. 11, ill.

- The Astra Torres airship.

Aeronautics, Vol. 19, No. 355 (Aug. 5, 1920), London, p. 116, ill.

- L'awenire dei dirigibilinel commercio.

Rivista Marittima (oct. 1920), Roma, pp. 15-21.

- Comparative study of the efficiency of various dirigibles.

Aerial Age, Vol. 13, No. 20 (July 25, 1921), New York, p. 470.

- Un dirigeable à air raréfié.

Suisse Aérienne, 3= année, No. 22-23, 1921, Berne, pp. 334-336.

- Le dirigeable pour les raids transocéaniques.

Suisse Aérienne, 2« année, No. 24 (31 déc. 1920), Berne, pp. 370.

- Dirigible prospects in United States and England.

TJ. S. Air Service, Vol. 2, No. 6 (Jan. 1920), New York, p. 18.

- Dirigible vedette "Sport y Turismo."

Tohtli, aOo 6, Nnms. 1 y 2 (enero y febrero 1921), Mexico, p. 66, ill.

BIBLIOGRAPHY OF AERONAUTICS, 1920-1021. 113

Dirigibles. Dirigeables et aérostats pendant la guerre.

L'Aérophile, 28 année, Nos. 7-8 (1<"-15 avril 1920), Paris, pp. 121-123, ill.

--Dirigibles superior for forest-fire prevention.

Aerial Age, Vol. 13, No. 24 (Aug. 22, 1921), New York, p. S70.

- See Becerril, Benjamin: Dirigibles militares.

- See Champsaur: Etude comparative du rendement des divers dirigeables.

- See Dollfus, Charles: Les précurseurs du ballon dirigeable rigide.

- See Périsse, Yves: Au sujet des dirigeables militaires pendent la guerre.

- See Sabatier, J.: Les dépenses probables d'une des dirigeables commerciaux.

- See Sabatier, J.: Les grands centres allemands de dirigeables.

- See Tanzi, J.: La technique des dirigeables rigides allemands.

- See United States Navy Department: Notes on the operation of nonrigid airships.

Distance. The accurate measurement of distance.

U. S. Air Service, Vol. 4, No. 2 (Sept. 1920), New York, p. 10.

Dixie magnetos. Comparative merits of Dixie magnetos and Delco battery ignition system when used on Liberty "12" aero engine. (Power plants report No. 76.)

Air Service Information Circular (Heavicr-than-air), Vol. 1, No. 17 (Mar. 25, 1920), Washington, Government Printing Office, pp. 4.

Dobson, G. Meteorology in the service of aviation.

Aëron. Journ., Vol. 25, No. 125 (May 1921), London, pp. 223-236. Aeronautics, Vol. 20, n. s., No. 383 (Feb. 17,1921), London, pp. 113-116.

Dobson, G. M. B. Design of instruments for navigation of aircraft.

The Geographical Journal, Vol. 56, No. 5 (Nov. 1920), London, pp. 370-3S9, ill. Nature, Vol. 106, No. 2668 (Dec. 16, 1920), London, 504-506, ill.

•-■ Observations of wind structure made at Upavon in 1914.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 736-743.

Doden, Gustav. Gewerbelehre.

München und Berlin, R. Oldenbourg.

Noted in: Zcitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 10 (31. Mai 1920), Berlin, p. 146.

Döring, Hermann. Versicherung und Luftverkehr.

Berlin, E. S. Mittler & Sohn, 1921. (Heft 29 der Veröffentlichungen des Vereines für . Versicherungswissenschaft), pp. 93. Reviewed in: 111. Flug-Woche, 3. Jahrg., 8. Heft. (13. Apr. 1921), Leipzig, p. 159; Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 17. Heft (30. Sept. 1921), München, p. 282.

Dollpus, Charles. Les collections de l'aéronautique.

Aéronautique, 3« année, No. 31 (dec. 1921), Paris, pp. 505-506, ill.

- La coupe Gordon-Bennett des ballons libres.

Aéronautique, 3e année, No. 29 (oct. 1921), Paris, pp. 413-414.

--Étude historique sur les projets de traversée de l'Atlantique en ballon.

Aéronautique, l' année, No. 9 (févr. 1920), Paris, pp. 380-386, ill.

- Les précurseurs du ballon dirigeable rigide.

Aéronautique, 2= année, No. 18 (nov.-déc. 1920), Paris, pp. 221-226, ill.

- Sur quelques postes de commande des gouvernails d'avions.

Aéronautique, 3« année, No. 22 (mars 1921), Paris, pp. 113—lis.

- See L'année aéronautique.

- See Hirschauer, L., and Charles Dollfus: L'année aéronautique 1920-21.

Dolman, Tero. A consideration of some tests for determining the sighting eye.

Air Service information Circular, (Hcavier-than-air), Vol. 1, No. 99, Pt. 13 (Aug. 15, 1920)., Washington, Government Printing Office, p. 83.

- The Maddox multiple red rod: A consideration of its optical defects.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 99, Pt. 14 (Aug. 15, 1920), Washington, Government Printing Office, pp. 84-85.

- The Maddox rod and a screen test combined.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 99, Pt. 7 (Aug. 15, 1920), Washington, Government Printing Office, pp. 42-44.

--■ The relation of the sighting eye to the measurement of heterophoria.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 99, Pt. 12 (Aug. 15, 1920), Washington, Government Printing Office, pp. 80-82.

Dominikus, Alfred. Die wirtschaftliche Bedeutung der brasilianischen Kautschukgewinnung einst und jetzt.

Flugwelt, 2. Jahrg., 2. Heft (21. Jan. 1920), Leipzig, pp. 58-59.

Dommett, W. E. Detail design of rigid airships.

Aeronautics, Vol. 18, No. 324 (Jan. 1, 1920), London, pp. 4-8, ill.

Donaldson, J. O. Impressions de vainqueurs: d'un continent a l'autre et retour. Vie Aérienne, No. 164 (1" jan. 1920), Paris, pp. 856-857, ill.

Donehower, Emile. People have always wanted to fly.

The Naviator, Vol. 1, No. 38 (Dec. 11, 1920), Pensacola, Fia., p. 4.

Donibristle. Donibristle aerodrome—ground leveling.

Flight, No. 630, Vol. 13, No. 3 (Jan. 20, 1921), London, p. 43.

Doorman, K. De fusie van marine-luchtvaartdienst en luchtvaartafdeeling. Vliegveld, 4e jaarg., No. 22 (23 Oct. 1920), 's-Gravenhage, pp. 372-373.

Doors, hangar. See Hangars: New type of door at Reno hangar.

Dope. Dopes and protective coverings.

Aviation, Vol. 10, No. 16 (Apr. 18,1921), New York, pp. 502-504.

- Report on life of wing coverings using clear dope.

Air Service Information Circular (Heavier-than-air), Vol. 2, No. 103 (Aug. 10, 1920), Washington, Government Printing Office, pp. 4.

- Tests of fireproof airplane dope and equipment.

Aviation, Vol. 9, No. 1 (Aug. 1, 1920), New York, pp. 21-22, ill.

- See Aston, F. W.: Fabric and dope, with special reference to deterioration of

strength and tautness.

- See Atkins, W. R. G., and Guy Barr: Report on the use of dopes and fabrics in

Egypt.

- See Barr, Guy: The extraction of valuable materials from "suint."

- See Barr, Guy, and L. L. Bircumshaw: Notes on cellulose acetate.

- See Barr, Guy, and W. R. G. Atkins: On the influence of acidity in the solvent.

- See Barr, Guy: Preliminary experiments with methyl-ethyl-ketone.

- See Barr, Guy, and W. R. G. Atkins: Systematic examination of some dope

solvents.

- See Barr, Guy, W. J. S. Naunton, and W. R. G. Atkins: Tests on dopes and varnishes for aeroplane wings.

- See Ban, Guy: Weathering and other tests on dopes containing acetone substitutes.

- See Fabrics: Fabrics^and dopea.

Dope. See Felgate, Russell A.: Wing dope from historic, technical side.

- See Gardner, H. A.: Aircraft technical note on dopes and fabrics.

- See Gardner, H. A.: Prevention of dope poisoning.

- See Gasoline: Dopes for gasoline.

- See Hopp, Geo.: Coating airplane wings mechanically.

- See Instruments: Tautometer for testing doped surfaces.

- See O'Gorman, Mervyn: Report on a series of tests on fabric weathered in

Somaliland.

- See Phénix: Phenix fireproof dope.

- See Smith, W. H. : Airplane dopes and doping.

- See Wilson, Edith G.: Note re yellow acetone oil.

Dorand. Comparaison entre les avions monoplans et biplans.

Aéronautique, 3' année, No. 25 (juin 1921), Paris, pp. 239-240.

Doraxd, E. Utilisation des résultats des essais faits sur petits modèles au tunnel aérodynamique pour le caleue des avions en vraie grandeur.

LVAérophile, 29« année, Nos. 19-20 (1« 15 Oct. 1921), Paris, pp. 290-292.

Doret, Claude. Ardeurs défuntes.

Vie Aérienne, No. 166 (15 janv. 1920), Paris, p. 891.

- L'autre son de cloche.

Vie Aérienne, No. 178 (8 avril 1920), Paris, p. 1086.

- Aviation militaire d'abord.

Vie Aérienne, No. 173 (4 mars 1920), Paris, p. 1000.

—— Bien veillam ment.

Vie Aérienne, No. 172 (20 févr. 1920), Paris, p. 990.

- Dures vérités.

Vie Aérienne, No. 179 (15 avril 1920), Paris, pp. 1102-1103.

- En feuilletant.

Vie Aérienne, 1920, Paris, pp 918, 934, 947, 968, 981, 990, 994, 1014, 1030, 1016-1048, 1054, 1063, 1084, 1094, 1111, 1148, 1204, 1236.

- L'épreuve.

Vie Aérienne, No. 164 (1" janv. 1920), Paris, pp. 846-847.

- 15248 avions.

Vie Aérienne, No. 182 (0 mai 1920), Paris, p. 1142.

- Héros disparus: le Bergent Jaouen.

Vie Aérienne, No. 188 (17 juin 1920), Paris, pp. 1194-1195, ‘11.

- Ironie!

Vie Aérienne, No. 187 (10 juin 1920), Paris, p. 1182.

- "Je vais changer tout cela."

Vie Aérienne, No. 189 (24 juin 1920), Paris, p. 1198.

- Laissons-la nos rêves.

Vie Aérienne, No. 107 (22 janv. 1920), Paris, p. 910.

- Liquidation des stocks.

Vie Aérienne, No. 190 (1er jnil. 1920), Paris, pp. 1211-1212, ill.

- L'obstacle au progrès.

Vie Aérienne, No. 177 (1« avril 1920), Paris, pp. 1070-1071.

—— Pourquoi?

Vie Aérienne, No. 180 (22 avril 1920), Paris, p. IIIS,

Doret, Claude. Réconfort.

Vie Aérienne, 1920, Paris, p. 1122.

- Les réserves.

Vie Aérienne, No. 193 (22 juil. 1920), Paris, p. 1230.

--- Resurrection?

Vie Aérienne, 1920, Paris, p. 942.

- Scapa-flow aérien.

Vie Aérienne, No. 171 (19 févr. 1920), Paris, p. 974.

--Simple question.

Vie Aérienne, No. 175 (18 mars 1920), Paris, p. 1038.

--Sommes-nous menacés?

Vie Aérienne, No. 1S4 (20 mai 1920), Paris, p. 1158.

- Un succès de curiosité.

Vie Aérienne, No. 165 (1« janv. 1920), Paris, p. S62.

- La vraie solution.

Vie Aérienne, No. 108,170 (29 janv.-12 févr. 1920), Paris, pp. 926, 958.

Dorey, A. See Bersey, \V. C, and A. Dorey: The motor, marine and aircraft red book, 1920.

Dorman. Dorman wave-power transmission tools.

Stafford, England, W. H. Dorman and Co., Ltd., 1920.

Dornier. Demonstratie van een Dornier-vliegboot te Rotterdam.

Vliegveld, 5« jaarg., No. 9 (23 Apr. 1921), Amsterdam, pp. 126-127.

- The Dornier Cs. II commercial flying boat. 185-horsepower B. M. W. engine.

Flight, No. 643, Vol. 13, No. 16 (Apr. 21,1921), London, p. 273, ill.

- Das Dornier Cs. 2 1920-Flugboot der Zeppelinwerke Lindau G. m. b. H.

III. Flug-Wochc, 3. Jahrg., 9. Heft (27. Apr. 1921), Leipzig, pp. 166-167, ill.

- The Dornier C. III cabin airplane.

Aviation, Vol. 10, No. 23 (June 6,1921), New York, p. 720, ill.

- The Dornier "Dragon Fly" flying boat.

Flight, No. 669, Vol. 13, No. 42 (Oct. 20, 1921), London, pp. 685-680, ill.

- Das Dornier-Kleiniiugboot "Libelle" . . .

III. Flug-Wochc, 6. Jahrg., 23. Heft (9. Nov. 1921), Leipzig, p. 473, ill.

- Dornier machines.

Aerial Age, Vol. 13, No. 6 (Apr. 18,1921), New York, p. 134.

- Dornier Metallflugzeuge.

Flugsport, 13. Jahrg., Nr. 10 (11. Mai 1921), Frankfurt, pp. 217-219, ill.

- Die Dornier-Metall-Flugzeuge der Zeppelinwerke Lindau G. m. b. H.

III. Flug-Woche, 3. Jahrg., 2. Heft (19. Jan. 1921), Leipzig, pp. 20-27, ill.

- Dornier-Metall-Flugzeuge, Typ Do. C. II. und Do. Cs. II.

Flugsport, 13. Jahrg., Nr. 8 (13. Apr. 1921), Frankfurt, pp. 169-172, ill.

- Die Dornier-MetallVerkehrsflugzeuge.

Luftweg, Nr. 11-12 (24: März 1921), Berlin, pp. 81-85, ill.

- The Dornier twin-engined monoplane, type G. 1.

Aerial Age, Vol. 13, No. 18 (July 11,1921), Now York, p. 422.

- The Dornier twin-engined monoplane, type G. 1. Two 185-horsepower B. M. W.

engines.

Flight, No. 650, Vol. 13, No. 23 (June 9,1921), London, p. 394, ill.

- Dornier types.

Aerial Ago, Vol 12, No. 19 (Jan. 17,1921), New York, p. 494.

Dornier. Ein neues Dornier-Kleinflugboot: die Dornier- "Libelle" . . Luftweg, Nr. 39-40 (6. Okt. 1921), Berlin, pp. 284-285.

- A new Dornier monoplane.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 14 (Apr. 0,1921), London, p. 336, diagr.

- A new German all-metal machine. The Dornier C3, 185-horsepower B. M. W.

engine.

Flight, No. 640, Vol. 13, No. 13 (Mar. 31,1921), London, pp. 223-224, ill.

- A novel twin-engined machine.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 22 (June 1,1921), London, p. 508.

- Some Dornier "milestones."

Flight, Vol. 12, Nos. 51, 52 (Dee. 16, 23, 1920), London, pp. 1269-1273, 1289-1292, diagr.

- Velivoli Dornier.

Bivista marittima (nov.-dic. 1920), Roma, pp. 30-34, ill.

——- See Fromentin, J.: Inventions. .

- See Hildesheim, Erik: Dornier all-metal cantilever monoplane.

- See Hildesheim, Erik: The Dornier flying boats.

- See Hildesheim, Erik: The Dornier giant flying boats.

——• See Zeppelin-Dornier: A new Zeppelin-Dornier twin-engined aeroplane.

Dort, R. G. Modern wing coverings—materials used and their application.

Aerial Age, Vol. 10, No. 12 (Jan. 5, 1920), New York, pp. 456-457 (concluded from p. 418).

- Reasons behind modern wing coverings.

Aircraft Journal, Vol. 6, No. 14 (Apr. 3, 1920), New York, pp. 5-6, ill.

Douglas, C. K. M. Clouds as seen from an aeroplane.

Quarterly Journal Royal Meteorological Society, July, 1920, London.

Douglas, Donald W. The airplane as a commercial possibility.

Journ. Soc. Automotive Engineers, Vol. 5, No. 6 (Dec. 1919), pp. 388-394. Scient. Amer. Monthly, Vol. 1 (Apr. 1920), New York, pp. 339-343, ill.

- Donald W. Douglas.

The Ace, Vol. 2, No. 6 (Jan. 1921), Los Angeles, pp. 18, 23, ill.

Douglas, Howard T. The late Capt. Howard T. Douglas.

Aerial Age, Vol. 13, No. 18 (July 11,1921), New York, p. 412.

Douglas, William D. Strength test of main plane ribs. Method employed at the R. A. E.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 822-827, ill., diagrs

Douglas fir. See Wood: Strength of southern pine and Douglas fir compared.

Dowd, R. E. The aeronautics of the flying fish.

Aerial Age, Vol. 12, No. 18 (Jan. 10,1921), New York, pp. 464-465.

Downwash. See Diehl, Walter S.: The determination of downwash.

- See Sandison, C. G. D., H. Glauert, and J. H. Jones: Investigation of thedown-

wash behind a biplane.

Dowsett, H. M. Wireless telegraphy and telephony.

London, The Wireless Press (Ltd.), 1920, pp. 360.

Drag. See Diehl, Walter S.: The variation of aerofoil lift and drag coefficients with changes in size and speed.

- See Fage, A., and H. E. Collins: Measurements of the drag of the bodies of a

model fighter and bomber machine.

--See Münk, Max M.: The drag of Zeppelin airships.

Drag. See Münk, Max M.: The minimum induced drag of aerofoils.

- See Zahm, Albert Francis, R. H. Smith, and G. C. Hill: The drag of C class

airship hull with varying length of cylindric midships.

Drag coefficient. See Reif, B. F.: An estimation of the variation of the drag coeffi-cent of a rigid airship form, from model size to full scale.

Dragon Fly. See Dornier: The Dornier "Dragon Fly" flying boat.

Drexler. See Gradenwitz, Alfred: German gyro gauges. The Drexler aircraft steering gauge.

Dreyer, Georges. See Great Britain. Privy Council. Medical Research Council: The medical problems of flying . . .

Drift. A possible new method of measuring drift.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 6 (Feb. 9,1921), London, pp. 131-132.

Driptograph. Driftograph.

Scient. Amer. Monthly, Vol. 3, No. 5 (May 1921), New York, pp. 553-554, ill.

Driggs, Laurence La Tourette. Clipped wings.

U. S. Air Service, Vol. 4, No. 5 (Dec. 1920), New York, p. 34. Outlook, Vol. 126 (Nov. 24, 1920), New York, pp. 554-555, ill.

- Football in the air. How the late Wilbert White tackled a Hun above the

Marne.

V. S. Air Service, Vol. 4, No. 1 (Aug. 1920), New York, pp. 23-27, il.

- Is flying dangerous?

Outlook, Vol. 126 (Nov. 10, 1920), New York, pp. 160-462, ill.

- Laurence Driggs prophesies San Francisco to New York in six hours.

TJ. S. Air Scr-nce, Vol. 5, No. 1 (Feb. 1921), New York, p. 23.

- Speed thirst satisfied.

Outlook, Vol. 126 (Sept. 8, 1920), New York, pp. 57-58, ill.

- We'll all take a flight.

Independent, Vol. 101 (Mar. 6,1920), New York, p. 350, ill.

Drive. See Kutzbach, K.: Experience with geared 'propeller drives for aviation engines.

Droesberg. Note sur les hélices aériennes.

La Cong.. l'Air, 3« année, No. 5 (1«* mars 1920), Bruxelles, pp. 56-57.

Druckluft-Luttenventilator mit Auspuff Strahldüse.

Zeitschr. Ver. deutseh. Ing., Band 65, Nr. 5 (29. Jan. 1921), Berlin, p. 126, id.

Dryden, Hugh Latlmer. Air forces on circular cylinders, axes normal to the wind, with special reference to dynamical similarity . . .

Bulletin Bureau of Standards, Vol. 16, 1920, pp. 489-519, diagrs. Scientific Papers of the Bureau of Standards, No. 394, with special thesis cover-title, dated June, 1919. Thesis (Ph. D.), Johns Hopkins University, 1919. Journ, I'rankl. Inst., Vol. 190 (Nov. 1920), Philadelphia, pp. 727-728.

Drzewiecki. Détermination approximative de la masse d'air que met en mouve ment une aile d'hélice.

L'Aérophile, 29« année, Nos. 11-12 (1«"--15 juin 1921), Paris, pp. 170-173, ill.

Drzewiecki, Stefan. See Grzçdzinski, January: Stefan Drzewiecki.

Drzewiecki, Stephanie. Théorie générale de l'hélice propulsive. Communication faite à la Commission Scientifique de l'Aéro-Club de France, le 26 février 1921, par A. Râteau, membre de l'Institut.

L'Aérophile, 29 année, Nos. 9-10 (1«-15 mai 1921), Paris, pp. 139-148, diagrs.

Drzewiecki, Stephanie. Théorie générael de l'hélice; hélices aériennes et hélices marines.

Paris, 1920, Gauthier-Villars et Cie., pp. xii, 184, ill.

Reviewed in: L'Aéroptiile, 28 année, Nos. 11-12 (ler-15 juin 1920), Paris, p. tjt Reviewed in; Flug. Jahrg. 1920, Nr. 5 (Mai), Wien, p. 60; Flug, Sondernummer (Dez. 1920), p. 127.

- See Watts, Henry C: The design of screw propellers, with special reference to

their adaptation for aircraft.

Dubédat, G. See Courquin, A. et G. Dubédat: Technique et pratique de la magneto à haute tension.

Dubowsky. Das Fliegen als Beruf.

Flug, Sondernummer (Dez. 1920), Wien, pp. 81-84, ill.

Ducros. L'alimentation des moteurs d'aviation.

Aéronautique, 2« année, No. 18 (nov.-déc. 1920), Paris, pp. 247-250, ill.

Dübendorf. Dübendorf aerodrome.

Flight, No. 630, Vol. 13, No. 3 (Jan. 30, 1921), London, p. 43, plan map.

- See Naef, Ernest: Une visite à Dübendorf.

Duffield, W. G. Meteorology: Lightning.

Air Power, Vol. 6, No. 6 (June 1920), New York, pp. 174-175, ill.

Dtjgit. Appareils de bord à deux aiguilles.

Vie Technique et Industrielle, Vol. 2, No. 16 (janv. 1921), Paris, pp. 323-327, ill.

- L'échelle rectiligne a divisions équidistantes appliquée à la mesure et à la

division des angles et les appareils de mesure à sensibilité constante.

Aéronautique, 3« année, No. 22 (mars 1922), Paris, pp. 120-121, ill.

Dugtjid, Alan. Aviation in India.

Aeronautics, Vol. 21, n. s., Nos. 404-406 (July 14-28, 1921), London, pp. 33, 44, 69.

Dumanois, M. P. Essences et combustibles employés en aviation.

L'Aérophile, 29« année, Nos. 5-6, 7-8 (1«-15 mars, 1"-15 avril 1921), Paris, pp. 92-93, 110-114.

Dumbleton, J. E. Principles and practice of air navigation.

London and New York, Crosby Lockwood & Son, Van Nostrand Co., 1920, pp. 179, il],

Dtjmesnil, H. Dans l'aéronautique militaire: 1920-21.

Aéronautique, 3e année, Nos. 19-20 (janv. 1921), Paris, pp. 267-26S.

Dumping. The antidumping amendment.

Aviation, Vol. 10, No. 21 (May 23, 1921), New York, pp. 654-655.

- Antidumping injunction granted.

Aviation, Vol. 10, No. 1 (Jan. 3,1921), New York, p. 23.

Dunlap, Matthew Elbridge. Moisture-resistant finishes for airplane woods.

National Advisory Committee for Aeronautics, Report No. 85, Washington, Government Printing Office, 1920, pp. 8, ill.

One of a series of eight monographs prepared by the Forest Products Laboratory of the Forest Service, U.S. Department of Agriculture.

Dun ville, John. Pioneers of British aviation—XXIV: Lieut.-Col. John Dunville, O. B. E.

Aeronautics, Vol. IS, No. 325 (Jan. 8, 1920), London, p. 43, ill.

Du Plessis de Grenedan. Sur l'utilisation du rigide "Dixmude" . . . Aéronautique, 2« année, No. 18 (nov.-déc. 1920), Paris, p. 256.

Duralumin. Composition and properties of duralumin.

Automotive Manufacturer, Vol. 62, No. 9 (Dec. 1920), New York, pp. 18-19.

Journ. Soc. Automotive Engineers, Vol. 7, No. 4 (Oct. 1920), New York, pp.359-362,charts.

- See Lewe: Festigkeitsprüfungen eines Holz- und eines Duralschwimmers.

Duralumin'. See Stout, William B.: Duralumin, its characteristics'and use.

- See Takens, LT. J.: Gegevens omtrent duraluminium.

- See Unger, E., and E. Schmidt: Duralumin.

Durand, William Frederick. Analysis of the need for civil aviation.

Automotive Industries, Vol. 41 (Oct. 30-Nov. 20,1919), New York, pp. 872-875, 922-924, 968971,1020-1024.

Durand, William Frederick, and Everett Parsons Lesley. Experimental research on air propellers, III.

Fifth Annual Report of National Advisory Committee for Aeronautics, Washington, 1920, pp. 317-351, ill.

National Advisory Committee for Aeronautics, Report No. 64, Washington, Government Printing Office, 1920, pp. 35, charts.

- Experimental research on air propellers, IV.

National Advisory Committee for Aeronautics, Report No. 109, Washington, Government Printing Office, 1921, pp. 11, ill.

- Tests on air propellers in yaw.

National Advisory Committee for Aeronautics, Report No. 113, Washington, Government Printing Office, 1921, pp. 37, tables, diagrs.

Duration. Le record de durée en avion Battu sur Farman-Goliath â 2 moteurs Salmson 260 HP. piloté par Bossoutrot et Bernard.

L'Aérophile, 28 année, Nos. 11-12 (1«-15 juin 1920), Paris, pp. 161-163, ill.

Dürfe e, W. C. Elements of a general theory of airplane wing design.

Mechanical Engineer, Vol. 41 (Sept. 1919), New York, pp. 728-729, diagr. Scient. Amer. Suppl., Vol. 88 (Dec. 20,1919), New York, p. 367.

Durward, J. The variation of wind with place.

Air Ministry, Meteorological Office, Professional Notes, No. 24, M. O. 245d, London, H. M.

Stationery Office, 1921, pp. [41], 42-47, diagr. «

Dust. A dust explosion and its prevention.

Aerial Age, Vol. 13, No. 7 (Apr. 25, 1921), New York, p. 158.

Dutch. A Dutch passenger carrier.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 8 (Feb. 23, 1921), London, p. 186, ill.

- A Dutch seaplane.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 16 (Apr. 20, 1921), London, pp. 376-37«, ill.

- New Dutch air service.

Aeronautics, Vol. 20, n. s., No. 380 (Jan. 27, 1921), London, p. 57.

- See N. A. V.: A new Dutch commercial aeroplane.

Dutertre, 0. Les transports aériens en Guyane Française.

Aéronautique, 3« année, No. 27 (août 1921), Paris, pp. 326-328.

Duval. Discours de M. le général Duval.

L'Aérophile, 29 année, Nos. 23-24 (1«-15 déc. 1921), Paris, p. 379.

- Le Général Duval quitte l'aéronautique.

Aéronautique, 1» année, No. 9 (févr. 1920), Paris, pp. 379, ill.

Duval, A. B. Le cercle calculateur de routes et de vitesses.

Aéronautique, 2» année, No. 16 (sept. 1920), Paris, pp. 155-157, ill.

- Traité pratique de navigation aérienne.

Aéronautique, 3» année, 1921, Paris, pp. 81-86, 121-125, 161-163, 201-203, 211-242, 1 , 321-325, 361-365, 401-408, 453-461, 509-516, ill.

Duval, Maurice. L'avenir commercial de l'aviation.

Inginieur, Vol. 36, No. 11 (mars 12, 1921), Paris, pp. 199-203.

Dyer, J. W. W. Airship fabrics.

Aeronautics, Vol. 20, n. s., No. 387-390 (Mar. 17-Apr. 7,1921), London, pp. 182-183, 200-202, 225-226, 244-246.

Aëron. Journ., Vol. 25, No. 127 (July 1921), London, pp. 332-356.

Dyke, A. L. Dyke's automobile and gasoline engine encyclopedia. Twelfth edition.

St. Louis, A. L. Dyke, 1920, pp. 940, charts, ill.

Dynamometer. Aircraft dynamometer hub.

Engineering, Vol. 110 (Aug. 20, 1920), London, pp. 260-262, diagr.

- See Heenan-Froude: The Heenan-Froude dynamometer.

- See Stieber, W.: The dynamometer hub.

- See Wood, Karl D.: A variable-speed fan dynamometer.

Dynamos. See Stone, Geoffrey de Holden: An uncommon dynamo type. Certain automobile considerations.

Dyott, G. M. An air-route reconnaissance from the Pacific to the Amazon. Geographical Journal, Vol. 56, No. 4 (Oct. 1920), London, pp. 267-297, ill.

E.

E. D. The E. D. 1,000-horsepower engine.

Aerial Age, Vol. 13, No. 11 (May 23, 1921), New York, p. 255.

Eagle. The "Eagle" aerial ambulance crash.

Flight, No. 652, Vol. 13, No. 25 (June 23, 1921), London, p. 424.

- See Curtiss: The Curtiss "Eagle."

Eagle, A. I. "Limited Service." A story of the "unfit" who produced 1,000,000 feet a day of airplane timber in the northwest woods.

U. S. Air Service, Vol. 5, No. 5 (June 1921), New York, pp. 9-13, ill.

Earle, Drayton Edwin. See Taylor, Fred., and Drayton Edwin Earle: . . . Manufacturing and laboratory tests to produce an improved cotton airplane fabric.

Ears. Have you ears to fly?

Independent, Vol. 104 (Oct. 30, 1920), New York, pp. 166-168, ill.

Eastbourne. The disgrace of Eastbourne.

The Aeroplane, Vol. 20, No. 14 (Apr. 6,1921), London, p. 320.

- The Eastbourne mystery.

The Aeroplane, Vol. 20, No. 16 (Apr. 20, 1921), London, p. 366.

Eastman. Eastman Kodak aerial cameras.

Flight, No. 637, Vol. 13, No. 10 (Mar. 10,1921), London, pp. 167-168, ill.

- See Photography: The Eastman aerial camera.

- See Villers, R.: La photographie aérienne. Les appareils Eastman.

Eaton, Herbert N. See Hersey, Mayo D., Franklin L. Hunt, and Herbert N. Eaton. The altitude effect on air speed indicators.

Eberhardt, Carl. Flugtechnik.

Berlin und Leipzig, Walter de Gruyter & Co., 1921, pp. 100, ill.

Reviewed in: Zeitschr. Flugt. Motorluftsch, 12. Jahrg., 21. Heft (15. Nov. 1921), München, p. 321.

- Das Höhenflugzeug der Zukunft.

Motorwagen, Vol. 24, No. 20 (20 Juli 1921), Berlin, pp. 405-408, ill.

44439—25-9

122

BIBLIOGRAPH Y OP AEROXAUÏICS, 1920-1921.

Eberhardt, Carl. Luftschiffahrt.

Berlin und Leipzig, Walter de Gruyter & Co., 1921, pp. 117, ili. Reviewedln: Aut. Flugv., Nr. 7 (Juli 1921), Berlin, p. 261; Zi 12. Jahrg., 17. Heft (15. Sept. 1921), München, p. 265.

(Juli 1921), Berlin, p. 261; Zeitschr. Flugt.Motorluftsch.,

Eberhard, W. Rhön-Segelflug-Wettbewerb 1921.

Luftweg, Nr. 37-3S (22. Sept. 1921), Berlin, pp. 269-271.

Ebi, Fritz, i. e. Friedrich Ludwig. Ueber die Wirkungsweise zylindrischer Sonden zur Untersuchung aerodynamischer Felder . . . Basel, 1920, pp. 23, diagrs.. pis. Inaug. diss.—Univ. Basel.

Eblè, L. Variabilité de la composition de l'atmosphère.

Annuaire, Société Météorologique de France, T. 64, Fase. 1, 1920, Paris, pp. 30-46.

Ebner. Das Flugwesen in Amerika.

Flugwelt, 2. Jahrg., 9. Heft (2S. Apr. 1920), Leipzig, pp. 256-257, ill.

Ebner, A. Amtliche Enthüllungen über die Zustände der amerikanischen Flugzeugindustrie während des Krieges.

Flugwelt, 2. Jahrg., 14. Heft (7. Juli 1920), Leipzig, p. 388.

- Das englische Luftministerium und die air navigation bill.

LU. Flug-Woche, 3. Jahrg., 9. Heft (27. Apr. 1921), Leipzig, pp. 161-162.

- Englischer Luftimperialismus und deutsche Luftpolitik.

Flugwelt, 2. Jahrg., 11. Heft (26. Mai 1920), Leipzig, pp. 308-309.

■-• Frankreich und der deutsche Flugzeugbau.

Flugwelt, 2. Jahrg., 26. Heft (22. Dez. 1920), Leipzig, pp. 631-634.

- Luftfahrt und Polizei.

Flugwelt, 2. Jahrg., 13. Heft (23. Juni 1920), Leipzig, pp. 349, 352.

- Luftfahrt und Völkerrecht.

Flugwelt, 2. Jahrg., 19. Heft, 1920, Leipzig, pp. 477-479, 497-500.

- Luitverkehr und Flugzeugbau im zukünftigen England.

Flugwelt, 2. Jahrg., 25. Heft (24. Nov. 1920), Leipzig, pp. 608-609.

■-- Nachklänge vom Monaco-meeting.

Flugwelt, 2. Jahrg., 11. Heft (26. Mai 1920), Leipzig, p. 325.

- Der Rechtszustand in Italien auf dem Gebiete der Luftfahrt.

Iii. Flug-Woche, 3. Jahrg., 13. Heft (28. Juni 1921), Leipzig, pp. 244-245.

- Seely und das englische Luftamt.

Flugwelt, 2. Jahrg., 10. Heft (12. Mai 1920), Leipzig, pp. 286-287.

Ecuador. Aviation in Ecuador.

Flying, Vol. 10, No. 3 (Apr. 1921), New York, pp. 104,114.

Echols, O. P. Aerial artillery observation in mobile warfare.

U. S. Air Service, Vol. 3, No. 6 (July 1920), New York, p. 32.

Eckersley, P. P. Duplex wireless telephony; some experiments on its application to aircraft.

Journal Institution Electrical Engineers, Vol. 58 (July 1920), London, pp. 555-571, diagr. Electrician, Vol. 85 (Aug. 20, 1920), London, pp. 207-209.

Eckley, Ralph B. Promoting a municipal field.

Aviation, Vol. 11, No. 18 (Oct. 31,1921), New York, p. 510.

Eckstein. Rechtsumschau: Maschinenlieferung mit vorbehaltenen Preisen und Umsatzsteuer.

Flugwelt, 2. Jahrg., 14. Heft (7. Juli 1920), Leipzig, p. 396.

- Rechtsumschau: Nachbesserungen und Schadenersatz bei Flugzeuglieferungen

und Reparaturen.

Flugwelt, 2. Jahrg., 17. Heft (18. Aug. 1920), Leipzig, p. 457^

Eckstein. Rechteujrjscb.au: Schädigung von Tieren, insbesondere scheuen, durch Luftflug.

Flugwelt, 2. Jahrg., 20. Heft (29. Sept. 1920), Leipzig, pp. 514-515.

- Rechtsumschau: Verletzung von Kindern durch unvorsichtiges Fliegen.

Flugwelt, 2. Jahrg., 16. Heft (4. Aug. 1920), Leipzig, pp. 438-439.

Eclipses. See Photography: To photograph eclipses by airplane.

Economo. Der derzeitige Stand unserer Luftschiffahrt.

Mitt. Oesterr. Aërc-CIubs, 5. Jahrg., Nr. 5 (1. Mai 1918), Wien, pp. 150-160.

Edqerton, James C. Radio as applied to air navigation in the air mail service. U. S. Air Service, Vol. 5, No. 1 (Feb. 1921), New York, pp. 12-14, ill.

Eggleston. Aerodynamical report and tests on the Eggleston air-cell giant biplane. Aerial Age, Vol. 14, No. 14 (Dec. 12,1921), New York, pp. 323-324, 326, ill.

Edstrom. The Edstrom wire wrapping machine.

Aviation, Vol. 8, No. 2 (Feb. 15, 1920), New York, p. 64, ill.

Edwards, Junius David, and Maurice Blaine Long. Solar radiation and balloons.

Aviation, Vol. 9, No. 15 (Dec. 27,1920), New York, pp. 487-490, diagr.

Eefendi. East African aeroplane work.

The Navy, Vol. 25, No. 2 (Apr. 1920), London, pp. 36-37.

Egypt. Egypt as an air center.

Aeronautics, Vol. 19, No. 371 (Nov. 25, 1920), London, pp. 371-372.

Eiffel. Etudes sur l'aéronautique faites au laboratoire aérodynamique Eiffel, de 1915 â 1918.

Génie Civil, T. 76, No. — (avril 3,1920), Paris, pp. 325-329, ill. diagrs., plans.

- Etudes sur l'hélice aérienne, faites au laboratoire d'Auteuil.

Paris, Librairie Aéronautique, E. Chiron, 1921, 2 vols., pp. xvi-304, ill.

- See Founder: L'œuvre du laboratoire aérodynamique Eiffel pendant la guerre.

Eiffel, G. Résumé des principaux travaux exécutés pendant la guerre au laboratoire aérodynamique Eiffel.

Paris Librairie Aéronautique, E. Chiron, 1920.

Eisenlohr, Roland. Einige "Papierleistungen" der englischen Flugzeugindustrie. Luftweg, Jahrg. 4, Heft 36-37 (23. Sept. 1920), Berlin, pp. 10, ill.

- Die konstruktiven Grundlagen der Verkehrsflugzeuge.

Flug, Sondernummer (Dez. 1920), Wien, pp. 72-78, ill.

- Luftverkehrs-Aussichten.

Flugwelt, 2. Jahrg., 5. Heft (3. März 1920), Leipzig, pp. 134-136.

- Zusammengesetzte Querschnittkonstruktion in Holz.

Flug, Jahrg. 1920, Nr. 5 (Mai), Wien, pp. 54-55.

El Khane:a . The relation of bumpiness to lapse of temperature at El Khanka, near Cairo, from July 27 to August 3, 1920.

Air Ministry, Meteorological Office, Professional Notes, No. 20, M. O. 240j, London, H. M. Stationery Office, 1921, pp. 118-121, diagr.

Elderkin, P. N. See Gray, G. F., J. W. Reed, and P. N. Elderkin: Air fans for driving generators on airplanes.

Electric drill. A portable electric drill.

Aviation, Vol. 10, No. 20 (May 16,1921), New York, p. 632.

Electric drive. Can a successful electrically driven aeroplane be produced?

Aerial Age, Vol. 12, No. 3 (Sept. 27, 1920), New York, p. 82, ill.

Electrically heated clothing. See Clothing: Electrically heated aviator's clothing. Electricity. See Atmospheric electricity.

- See Plaisant, G.-H.: Electricité et aviation.

Elektron. "Elektron."

Aerial Age, Vol. 13, No. 7 (Apr. 25, 1921), New York, p. 158.

- Elektron metal.

Aerial Age, Vol. 13, No. 14 (June 13,1921), New York, pp. 325-326.

Elevators. Full-scale experiment on the moment about the hinge of the air forces on an elevator. Experiment on R. A. F. whirling arm.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 497-499, ill.

- See Glauert, H.: Full-scale experiments with elevators of different sizes.

- See Norton, F. H.: The effect of elevator weight.

Ellington, E. L. The present position of aircraft research and contemplated developments.

Proceedings oi the Air Conference, 1920, with appendices, London, H. M. Stationery Office, 1920, pp. 57-77.

Aeron. Eng. Suppl. The Aeroplane, Vol. 19, No. 16 (Oct. 20, 1920), London, pp. 674-678. Aeronautics, Vol. 19, No. 366 (Oct. 21, 1920), London, pp. 284-285, 290. Engineer, Vol. 130 (Oct. 22, 1920), London, pp. 409-410.

Engineering, Vol. 110 (Oct. 15-22, 1920), London, pp. 504-505, 554-555, 528-529, 540. Flight, Vol. 12, Nos. 42, 43 (Oct. 14, 28, 1920), London, pp. 1075-1076, 1130-1132.

Ellis, H. C. A 25-inch-spread monoplane.

Everyday Engineering Magazine, Vol. 9, No. 6 (Sept. 1920), New York, pp. 535, ill.

- Compressed air driven monoplane.

Everyday Engineering Magazine, Vol. 9, No. 2 (May 1920), New York, pp. 144-145, ill.

- A 34-inch-spread monoplane model.

Everyday Engineering Magazine, Vol. 8, No. 5 (Feb. 1920), New York, pp. 307,308, ill.

Ellis, Max M., and Carl N. Larsen. A device adapting the Barany chair to rebreather tests.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 3 (Mar. 15, 1920), Washington, Government Printing Office, pp. 36-38, diagr.

Ellis, Max M. Respiratory volumes of men during short exposures to constant low oxygen tensions attained by rebreathing.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 99, pt. 8 (Aug. 15, 1920), Washington, Government Printing Office, pp. 45-50.

Elmendorf, Armin. Data on the design of plywood for aircraft.

National Advisory Committee for Aeronautics, Report No. 84, Washington, Government Printing Office, 1920, pp. 15, ill.

- The design of Monocoque fuselages.

Aviation, Vol. 9, No. 4 (Sept. 15, 1920), New York, pp. 112-114, diagr.

—— Factors affecting the warping of plywood.

Aviation, Vol. 8, No. 1 (Feb. 1,1920), New York, pp. 25-27, ill.

- Plywood in airplane construction.

Aviation, Vol. 10, Nos. 20-21 (May 16-23, 1921), New York, pp. 630-632, 660-663, diagr.

Elton, Robert W. Aerial mapping.

Aircraft Journal, Vol. 6, No. 25 (June 21, 1920), New York, pp. 5-6.

- The Fairchild distant control for aerial cameras.

Aerial Age, Vol. 11, No. 21 (Aug. 2, 1920), New York, p. 713, ill.

- Mounting of cameras in airplanes.

Aviation, Vol. 10, No. 14 (Apr. 4,1921), New York, p. 430.

Emergency flotation gear. Description and test |of DelH emergency flotation gear.

Engineering Division, Air Service, Technical Orders, No. 8 (Sept. 1919), Dayton, Ohio, pp. 51-56, figs.

EngbErding, Weltluftschiffahrt ohne Deutschland?

Luftweg, Nr. 45-46 (17. Nov. 1921), Berlin, pp. 317-318.

Encke, Joachim. Die funkentelegraphische Organisation eines Luftfahrtnachrichtenwesens.

Flugwelt, 2. Jahrg., 7. Heft (31. März 1920) Leipzig, pp. 210-212, ill.

Endurance. Endurance of aircraft.

Scient. Amer., Vol. 122 (Jan. 17, 1920), New York, p. 56. Engine valves. See Monel: Monel for engine valves. Engineering. Does engineering in aeroplane design pay?

Aerial Age, Vol. 14, No. 3 (Sept. 26 1921), New York, p. 51.

- Education in aeronautical engineering.

Aeronautics, Vol. 20, n. s., No. 385 (Mar. 3,1921), London, p. 143.

- The need for more engineering in aeroplane design.

Aerial Age, Vol. 14, No. 2 (Sept. 19,1921), New York, p. 27.

Engines. A. M. U. A. L. engines.

Aeronautics, Vol. 18, No. 331 (Feb. 19, 1920), London, p. 157, ill.

- Aero engines at Olympia.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 3 (July 21, 1920), London, pp. 186-216, ill. Flight, vol. 12, No. 28 (July 8, 1920), London, pp. 728-733, ill.

- Aero engines, drive pumps and dynamos.

Pop. Meeh., Vol. 34 (Nov. 1920), Chicago, p. 693, ill.

- Aeromarine U-8 180-horsepower engine.

Aviation, Vol. 9, No. 12 (Dee. 6, 1920), New York, pp. 387-388, ill.

- Aeroplane engine inspection.

Aerial Age, Vol. 10, No. 12 (Jan. 5, 1920), New York, pp. 460-461.

- The air cooling of petrol engines.

Aeronautics, Vol. 18, No. 331 (Feb. 19, 1920), London, p. 159.

- Airplane to have engines along and within wings.

Pop. Mech., Vol. 34 (Oct. 1920), Chicago, p. 599, ill.

- Aircraft-engine development.

Aviation, Vol. 11, No. 12 (Sept. 19,1921), New York, p. 344, ill.

- An American engine programme.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 13 (Mar. 30, 1921), London, p. 308.

- Army and Navy development of aero engines.

Aviation, Vol. 10, No. 13 (Mar. 28, 1921), New York, pp. 390-391, ill.

- The B. M. W. 6-cylinder 185-horsepower engine.

Aviation, Vol. 10, No. 12 (Mar. 21,1921), New York, pp. 370-371, ill.

- Aviation a moteur; extraits.

Suisse Aérienne, 2« année, No. 15 (10 août 1920), Berne, pp. 227-229.

- Ballonmotoren.

Avia, 8« jaarg., No. 8 (1 Sept. 1920), Rotterdam, pp. 94-97.

- British aero engines.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 20(Nov. 16,1921), London, pp. 469-478, ill.

- BlaBt engine with reaction jet propulsion; abstract.

Mechanical Engineer, Vol. 42 (Apr. 1920), New York, p. 234, diagr.

Engines. Coupling of aero engines.

Aerial Age, Vol. 13, No. 19 (July 18, 1921), New York, p. 446.

- Curtiss C-6 engine has improved cylinder block and heavier crank shaft.

Automotive Industries, Vol. 43 (July 29, 1920), New York, p. 209, ill.

- De carbolyseur Courtier.

Vliegveld, 5« jaarg., No. 24 (26 Nov. 1921), Amsterdam, pp. 328-329.

- Design of supercharged aircraft engines.

Journ. Soc. Automotive Engineers, Vol. 7, No. 2 (Aug. 1920), New York, p. 177.

- The design of supercharged and over-dimensioned aircraft motors.

Aeronautics, Vol. 19, No. 355 (Aug. 5, 1920), London, pp. 118-119, charts.

- Development of aero engines since 1914.

Aerial Age, Vol. 12, Nos. 20, 21 (Jan. 24, 31, 1921), New York, p. 518, 544.

- Development of aeronautical engines by the Army and Navy.

Aerial Age, Vol. 13, No. 2 (Mar. 21,1921), New York, pp. 32, 37.

-■ Development of an American pursuit engine.

Aviation, Vol. 11, No. 26 (Dec. 26, 1921), New York, pp. 735-738, ill.

-• A devide for keeping a constant mixture in the carburetter of an aeroplane as

the macine ascends.

Tech. Eept. Advis. Com. Aeronautics, 1916-1917, Vol. 2, London, 1920, pp. 403-406, diagr.

- Einige ungewöhnliche Umlaufmotoren.

111. Flug-Woche, 3. Jahrg., 7. Heft (30. März 1921), Leipzig, pp. 121-123.

--Enemy aircraft engines, detailed descriptions of certain of the engines in use

and the German aeroplane-engine trails.

London and Coventry, Illffe & Sons, Ltd. 1919.

- Engine developments and engine installations.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No 25 (Dec. 22, 1920), London, pp. 936,938

- Engine performance data.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 24 (June 15,1921), London, p. 552.

-■ Engine rules for pilots.

Aerial Age, Vol. 10, No. 14 (Jan. 19, 1920), New York, p. 539.

-- Engines at the Paris show.

Aer. Eng., Suppl. The Aeroplane, Vol. 21, No. 21 (Nov. 23, 1921), London, p. 526.

-■ Engines for air lines.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 16 (Apr. 20, 1921), London, p. 380.

-- Engines, new design.

Engineering Division Air Service, Technical Orders No. 7 (Apr. 1919), Dayton, Ohio, pp. 39-40.

- Das fliegende Fahrrad.

Suisse Aérienne, 3« année, 1921, No. 13, Berne, pp. 187-188, ill.

- European aircraft trend is toward large water-cooled engines.

Automotive Industries, Vol. 42 (Feb. 26, 1920), New York, pp. 554-559, ill.

- L'évolution et les progrès de la mécanique appliquée; canons, moteurs d'aviation et locomotives à vapeur

Génie Civil, Vol. 77 (Nov. 20,1920), Paris, pp. 420-422.

-- Experimental centrifugal oil cleaner attached to Liberty engine.

Automotive Industries, Vol. 43 (Sept. 23, 1920), New York, pp. 610-611, ill., diagr.

- Extract of British report on variation of engine horsepower with altitude.

Technical Orders No. 9 (Oct, 1919), pp. 113-115, figs.

Engines. Flugzeuge und Motoren aus dem Jahre 1920-21.

Zeitschr. Fragt. Motorluftsch, 12. Jahrg., 16. Heft (31. Aug. 1921), München, pp. 247-250, ill.

- The French competition for peace-time aero engines.

Aerial Age, Vol. 11, Nos. 15-16 (June 21-28, 1920), New York, pp. 509-510, 548-549. Flying, Vol. 9, No. 6 (July 1920), New York, pp. 396-397.

- High-compression engines and the African air lines.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 22 (June 2, 1920), London, p. 1092.

- How engines should be mounted.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 15 (Oct. 12,1921), London, p. 324, ill.

- Increase of power output with higher compression ratios; another of the McCook

Field engine tests.

Automotive Industries, Vol. 42 (May 20, 1920), New York, pp. 1158-1159.

- An indicator for aero engines.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 15 (Apr. 13,1921), London, pp. 356.

- Induction systems.

Aerial Age, Vol. 12, No. 22 (Feb. 7,1921), New York p. 566.

-• Influence of water injection on engine performance.

Aeronautics, Vol. 18, No. 326 (Jan. 15, 1920), London, p. 68.

- Influence of water injection upon engine performance.

Aeronautics, Vol. 19, No. 357 (Aug. 19,1920), London, p. 152.

- Installation of an aeroplane engine.

Aerial Age, Vol. 13, No. 1 (Mar. 14,1921), New York, p. 14.

- Internal combustion engines.

Report of the Aeronautical Research Committee for the year 1920-21, H. M. Stationery Office, Cmd. 1458, London, 1921, pp. 26-31.

- International aero exhibition.

Engineering, Vol. 110 (July 23-30, 1920), London, pp. 106-109, 118, 137-112, pi. 14-15.

- Les dispositifs moteurs.

Aéronautique, 2« année, No. 15 (août 1920), Paris, pp. 108-110, ill.

- Luftkühlung von Benzinmotoren.

iii. Flug-Woche, 3. Jahrg., 17. Heft (17. Aug. 1921), Leipzig, pp. 351-355, ill.

- Machinery of H. M. airships R-33 and B.-34.

Engineering, Vol. 109 (Apr. 2, 16, 1920), London, pp. 433-434, 504-505, ill., diagr.

- Machining airplane-engine parts.

Machinery, Vol. 52 (June 10, 24, 1920), New York, pp. 1247-1252, 1361-1365, ill., diagr.

- Measuring temperatures in internal-combustion engines.

Aerial Age, Vol. 13, No. 22 (Aug. 8,1921), New York, p. 522.

- Moteur fiat A15-R 400 HP.

Aéronautique, 2« année, No. 13 (juin 1920), Paris, pp. 24, ill.

- Un moteur pour l'aviation commerciale.

Aéronautique, 3» année, Nos. 19-20 (Jan. 1921), Paris, p. 306, ill.

- Motor cycling and lubrication.

Cheapside, London, C. C. Wakefield and Co. (Ltd.), 1920.

- Neue ausländische Verkehrsflugzeuge.

Lutfweg,Nr. 51-52 (29. Dez. 1921), Berlin, pp. 354-355.

- New aircraft engines at the Paris aero show.

Aviation, Vol. 8, No. 2 (Feb. 15,1920), New York, pp. 54-56, ill.

- The new Fiat type A-18.

Aeronautics, Vol. 19, No. 357 (Aug. 19,1920), London, p. 151, ill.

Engines. One million francs for an aero engine.

Flight, No. 669, Vol. 13, No. 42 (Oct. 20,1921), London, p. 688.

- The Olympia 1920 aero show. The engines.

Flight, Vol. 12, No. 29 (July 15,1920), London, pp. 762-766, ill.

- Overhauling an aviation motor.

Aircraft Journal, Vol. 6, No. 24 (June 14, 1920), New York, p. 13.

- Pictures of the engine that has changed the world.

My Magazine, Vol. 17, No. 140 (Oct. 1921), London, pp. 797-804, ill.

- Possible line of developments in aircraft engines.

Aerial Age, Vol. 12, No. 21 (Jan. 31,1921), New York, p. 544.

- Power and weight of aero engines.

Aerial Age, Vol. 14, No. 9 (Nov. 7,1921), New York, p. 209.

- Power-recuperating engine.

Scient. Amer. Monthly, Vol. 1 (June 1920), New York, pp. 568-569, diagr.

—— Preliminary airplane performance calculations.

Technical Orders No. 9 (Oct. 1919), pp. 41-104, figs.

- The problem of fuel for aviation engines.

Technical Notes, National Advisory Committee for Aeronautics, No. 62, July 1921, Washington (mim.), pp. 21, diagr. Aviation, Vol. 11, No. 13 (Sept. 26, 1921), New York, p. 370.

- Radiators for water-cooled engines.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 430-453.

- Requirements of aeroplane engine design.

Aerial Age, Vol. 14, Nos. 14,16 (Dec. 12, 26, 1921), New York, pp. 329, 377.

- Rolls-Royce Bulletin.

London, Bolls-Boyce (Ltd.), 1920.

- La VIe exposition internationale d'aéronautique de Londres (9-20 juil. 1920).

Génie Civil, Vol. 77 (Aug. 21, 1920), Paris, pp. 153-156, ill., diagr., plans.

- Silencing aero engines.

Aerial Age, Vol. 13, No. 11 (May 23, 1921), New York, p. 243.

- Steam engines for aircraft.

Aeronautics, Vol. 19, No. 352 (July 15,1920), London, p. 49.

——■ Steam engines for airships.

Aerial Age, Vol. 13, No. 26 (Sept. 5,1921), New York, p. 622.

- Steam motors for aircraft.

Aircraft Journal, Vol. 7, No. 8 (Aug. 23, 1920), New York, p. 5. Aviation, Vol. 9, No. 3 (Sept. 1,1920), New York, p. 88, ill.

- A supercharged engine and airplane performance.

Journ. Soc. Automotive Engineers, Vol. 7, No. 3 (Sept. 1920), New York, p. 302.

- Technical specifications of aircraft engines exhibited at the New York aircraft

show.

Automotive Industries, Vol. 42 (Mar. 18,1920), New York, p. 701.

- Tests of an aero engine.

Engineer, Vol. 132 (Nov. 11,1921), London, p. 510.

-—• Torque reaction beds for engine tests. _

Aviation, Vol. 7, No. 12 (Jan. 15, 1920), New York, p. 536, diagr.

—— Trouble shooting in airplane engines. Complete instructions for the care of motors issued by the Director of Air Service.

Aircraft Journal, Vol. 7, Nos. 10-11 (Sept. 6-13,1920), New York, pp. 3-6, 6-9, ill,

Engines. Der 200-PS-Flugmotor "Winterthur."

Flugwelt, 2. Jahrg., 5. Heft (3. März 1920), Leipzig, pp. 136-138, ill.

- Universal test engine.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 47 (May 8, 1920), "Washington, Government Printing Office, pp. 7.

- The value of supercharging.

Flight, Vol. 12, No. 3 (Jan. 15,1920), London, pp. 83-85, diagr.

- Valves for compressed-air engines.

Flight, No. 644, Vol. 13, No. 17 (April 28, 1921), London, p. 301, ill.

- The variation of horsepower with altitude.

Aeronautics, Vol. 19, No. 367 (Oct. 28,1920), London, p. 313, chart.

- Vindication of the aero-engine Cairo-Cape flying.

Aeronautics, Vol. 18, No. 336 (Mar. 25, 1920), London, pp. 254-258, ill.

- Why magneto ignition makes a good engine better.

Aircraft Journal, Vol. 6, No. 11 (Mar. 13, 1920), New York, p. 22, ill., diagr.

- Work of the Bureau of Standards in testing airplane engines.

Scient. Amer. Monthly, Vol. 1 (Feb. 1920), New York, pp. 191-192.

- The Wright aero engines.

Aerial Age, Vol. 12, No. 12 (Nov. 29, 1920), New York, p. 322.

- See A. B. 0.: A. B. C. aero engines.

- See A. B. C: A. B. C. engine data.

- See Abell, C. F.: Airship engines.

- See Aeronautical Research Committee: The internal-combustion turbine.

- See Angle, Glenn D.: Airplane engine encyclopedia.

- See Anzani engine. The mounting of Anzani radial engines.

- See Archer, R. S.: Some metallurgical features of the Liberty engine.

- See Artifex: Aero engines at the Crystal Palace.

- See B. M. W.: The B. M. W. aero engines.

- See Bauer, W. C: Aeromarine eight cylinder B type motor.

- See Beatty, I. J.: Lincoln motor production plan.

- See Blanchet, Georges.: Le Liore-Olivier bimoteur militaire.

- See Bothezat, George de.: Airplane performance as influenced by the use of a

supercharged engine.

- See Bourdon, M. W.: Cosmos radial airplane engine designed in England.

- See Bourdon, M. W.: Napier aero engine with new arrangement of cylinders.

- See Bradley, W. F.: French rotary airplane engine uses a variable stroke.

- See Bradley, W. F.: Lorraine-Dietrich production of airplane engines.

- See Brion, Maurice.: Le vol au moteur.

- See Bristol.

- See Bristol: First standardised aero engine mounting. Swivelling mount for

Bristol "Jupiter."

—— See Buist, H. Massac: Aircraft engines and high-speed marine service.

- See Carhart, H. A.: Assembling Liberty motor connecting rods.

Engines. See Carhart, H. A.: Connecting-rod forgings for the Liberty motor.

- See Carhart, H. A.: Finishing Liberty motor connecting rods.

- See Carhart, H. A.: Liberty motor connecting rods.

- See Carles, F.: Le moteur a essence.

- See Cautley, John R.: Wright aircraft engines.

- See Chase, H.: Laboratory for aircraft-engine testing.

- See Chessex, Louis: Les tendances actuelles dans les moteure d'aviation.

- See Curtiss: The Curtiss model CD-12 400-horsepower aeronautical engine.

- See Clark, D. Nelson: The spiral engine.

- See Clark, V. E.: Maintaining airplane engine power at great altitudes.

- See Clark, V. E.: New York to San Francisco in nine hours made possible when

engine efficiency is maintained at high altitudes.

- See Clerget-Blin: Clerget-Blin motor.

- See Colvin, F. H.: How Ford built Liberty motors.

- See Condit, K. H.: Firing orders of internal-combustion engines.

- See Condit, K. H.: Modern aviation engines.

- See Cosmos: The Cosmos 100-horsepower "Lucifer" engine.

- See Daimler: Austro-Daimler-Flugzeugmotoren.

-—• See Dickinson, H. C, and F. B. Newell: A high-speed engine pressure indicator of the balances diaphragm type.

- See Diesel: A German Diesel airplane engine.

- See Diesel: Semi-Diesel engines.

- See Diesel: Twin-piston Diesel engine designed for use in aircraft.

- See Doriner: The Doriner twin-engined monoplane, type G. L. Two 185-

horsepower B. M. W. engines.

-.- See Ducros: L'alimentation des moteurs d'aviation.

- See E. D.: The E. D. 1,000-horsepower engine.

- See Everling, E.: The dynamometer hub and the flywheel of the engine.

- See Fage, A., and H. E. Collins: Windage experiments with a model of the

rotary engine B. R. 1.

- See Fedden, Roy: Static radial air-cooled engines.

- See Fiat: New Fiat airplane and engine.

- See Fiat: New Fiat engine.

- See Fiat: 300-horsepower Fiat model A-12 engine.

- See Fiat: The 650-horsepower Fiat aircraft engine.

- See Fiat: Two new Fiat aero engines.

- See Fromentin, J.: Les moteurs d'aviation.

- See Funck, Georges: Power-recuperating engines; principles of operation and

design of valve gear.

- See Funck, Georges: The supercharging of internal-combustion engines—III.

Engines. See Gage, Victor R.: A study of airplane-engine tests.

- See Gage, Victor R.: Some factors of airplane-engine performance.

- See Gage, Victor R.: Some factors of engine performance.

- See Germany: The German B. M. W. high-altitude engines.

- See Germany: German supercharger developments.

- See Gibson, A. H.: Aero engine efficiencies.

■—- See Gilles, G.: Le moteur d'aviation selve 300 HP.

- See Great Britain: Modem British engines.

—■—■ See Great Britain: More about British engines.

- See Griffith, A. A.: On the shape of fins for the cooling of hot surfaces by a

stream of air.

- See Griffiths, E. A.: Tests on high-tension magnetos.

- See Haacke.

- See Hallett, George E. A.: Superchargers and supercharging engines.

- See Harlaut: L'évolution des moteurs d'aviation allemands.

- See Hartney, H. R.: Notes on running Mono-Soupape engine.

- See Heller, A.: The 300-horsepower Benz aircraft engine.

- See Herrmann, H.: Motoren der englischen Luftfahrtausstellung.

- See Hildesheim, Erik: The Austrian "Hiero" aero engines.

-■ See Hildesheim, Erik: German aero engines at the armistice.

- See Hildesheim, Erik: New series Vee type German Benz aero engines.

- See Hildesheim, Erik: Recent Benz aero engines.

- See Hildesheim, Erik: Recent German aero engine developments.

- See Hill, R. M.: A comparison of single and twin engined aeroplanes.

- See Hispano-Suiza: Performance of Hispano-Suiza engines.

—■— See Hispano-Suiza: Test of standard Hispano-Suiza engine.

- See Hispano-Suiza: Testing of a Hispano-Suiza motor.

- See Hourwich, Iskander: "Design of aeroplane engines," by John Wallace. A

review.

- See Howard lectures: Howard lectures—Royal Society of Arts.

- See Ignition: Aero-engine ignition.

- See Isotta Fraschini: Isotta Fraschini motors.

- See Isotta-Fraschini: Isotta-Fraschini type V-6 engine.

- See James, P.: Les moteurs au VIIe Salon.

- See Kemble, E. C.: The calculated performance of airplanes equipped with

supercharging engines.

- See Kostiwal, Hans: Unsere Flugmotoren.

- See Kutzbach, K.: Experience with geared propeller drives for aviation engines.

Engines. «See Lanchester, F. W.: Report on high altitude flying and the development and improvement of the aeronautical motor.

- See Lancia. The 320-horsepower Lancia aeroplane engine.

--■ See Lawrence: Lawrence L-2 air-cooled motor.

- See Lehmann, Otto: Friedensmotoren.

- See Lémon, E. H.: Les moteurs d'aviation B. M. W.

- See Liberty engine.

- See Liberty engine: Standard engine report of 12-cylinder Liberty engine.

- See Liptrot, R. N.: Radiators and cooling systems for aircraft engines.

- See Loening, Grover Cleveland: Engine shape as effecting airplane operation.

- See McBride, R. S.: New engine-testing plant.

- See MacCoull, Neil: The Fiat 600-horsepower aircraft engine.

- See Marcotte, Edmond: Les moteurs d'aéronautique.

-— »See Margoulis, W.: The steadiness factor in engine sets.

- «See Markiewicz, E.: Les types modernes de moteurs d'avions.

- See Martinot-Legarde: Fonctionnement des moteurs en atmosphère raréfiée.

- «See Martinot-Lagarde: Les moteurs d'aviation allemands.

- «See Martinot-Lagarde: Les moteurs d'aviation français en 1920.

- «See Martinot-Lagarde: Note au sujet des moteurs d'aviation.

- «See Martinot-Lagarde, C: Les nouveaux moteurs d'aviation.

--■ «See Masméjean, A., et E. Béréhare: Les moteurs à explosion dans l'aviation.

- «See Mercedes: Report on the 260-horsepower Mercedes aero engine.

- «See Napier: The 450-horsepower Napier aero engine.

- «See Napier: The 450-horsepower Napier Lion engine.

- «See Napier: The Napier 1,000-horsepower aero engine.

- «See Napier: Some new Napier "Lion" necessities and "The Cub."

- «See Noack, W. G.: Ist in Luftfahrzeugen der Benzinmotor durch andere

Antriebsvorrichtungen ersetzbar?

■-• «See Noack, W. G.: Tests of the Daimler D-IVa engine at a high altitude test

bench.

--■ «See O'Gorman, Mervin: The object of tabulating engine data.

- «See O'Malley, J. M.: The Liberty engine.

- «See O'Malley, J. M.: Characteristics of the airplane engine.

- «See O'Malley, J. M.: Handling the engine in the air.

-• «See Packard: The Packard aero engine.

•- «See Packard: The Packard 500-600-horsepower aircraft engine.

- «See Packard: Packard to develop dirigible engine.

■- «See Page, A. J.: Gas turbines.

- «See Parish, W. F.: Proper balancing of fuel, lubricant, and motor.

Engines. See Peugeot: Peugeot engines.

- See Piusent, D. H., and H. A. Renurick: The variation of engine power with height.

- See Radiators: Testing of airplane radiators.

- See Rathbun, John B.: Aeroplane engines in theory and practice . . .

- See Rausie: A new 175-horsepower Rausie aero engine.

- See Rausie: Rausie E-6 airplane engine designed for commercial work.

- See Ricardo, Harry R.: Some experiments in supercharging in a high-speed

engine.

- See Ricardo, Harry R.: Some possible lines of development in aircraft engines.

- See Rolls-Royce: Rolls-Royce aircraft engines described and illustrated.

- See Rolls-Royce: Rolls-Royce aero engines and the great Victory seaplanes,

flying boats, airships.

- See Rowledge, A. J.: The installment of an aeroplane engine.

- See Ruel: Hydrogen in airship engines.

•- See Rumpler: The Rumpler 1,000-horsepower engine.

- See Salmson: Un nouveau moteur d' aviation commerciale. Le moteur

Salmson 300-horsepower, type Az 9.

- See Schipper, J. E.: Experimental separation of engine losses develops interesting results.

- See Schwager, Otto: Development of German aircraft engines.

- See Schwager, Otto.: Die Entwicklung der Flugmotoren im In und Auslande

seit 1914.

- See Schwager, Otto: Eine neue Zündung ausländischer Flugmotoren.

- See Schwager, Otto: Motoren für Kleinflugzeuge.

- See Schwager, Otto: Notes on the design of supercharged and overdimensioned

aircraft engines.

- See Schwager, Otto: On the calculation of super-compressed and overdimensioned engines.

- See Schwager, Otto: Preliminary calculation of cylinder dimensions for aircraft

engines.

- See Schwager, Otto: Recent efforts and experiments in the construction of

aviation engines.

- See Schwager, Otto: Die Vorausberechnung der Zylinderabmessungen der

Flugmotoren.

- See Seppeier, Ed.: Die bisherige und zuk ünftige Entwicklung von Flugmotoren.

- See Shaw, Douglas: Single or multi engined aeroplanes.

- See Sherman, T. L.: The starting of airplane engines.

- See Shoots: Shoots airplane engine loose.

- See Siam: Siam and the Napier engines.

- See Sparrow, S.W.: Flying an airplane engine on the ground.

134 BLBLIOGEAPHT OF AERONAUTICS, 1Ö20-1921.

Engines. See Sparrow, S. W.: Increase in maximum pressures produced by preignition.

- See Sparrow, 3. W.: Instrument for measuring engine-clearance volumes.

- See Sparrow, S.W., and H. S. White: Performance of a 300-horsepower Hispano-

Suiza airplane engine.

- See Sparrow, S. W.: Performance of B. M. W. lS5-hor=epower airplane engine.

- See Sparrow, S. W.: Performance of Maybach 300-horsepower.

- See Stanton, T. E., Dorothy Marshall, and E. Griffith: On the dissipation of

heat from the surface of an air-cooled engine when raniiing and when at rest.

- See Stanton, T. E.; H. C. Booth, and Dorothy Marshall: On the effect of surface

roughness on the heat transmitted from hot surfaces to fluids flowing over them, with special reference to the case of the gills of an air-cooled engine.

- See Starters: Bristol aero engine starter.

- See Starters: New ignition end Bijur airplane-engine starter.

——• See Sunbeam: Sunbeam activity.

- See Sunbeam-Coatalen: The 12-cylinder S00-900 horsepower Sunbeam-Coatalen

aircraft engine.

- See Supercharged: Experiments with supercharged engines.

- See Switzerland: A Swiss aero engine.

- See Sylvester, Cyril: The design and construction of aero engines.

- See Taylor, G. I.: Conditions at the surface of a hot body exposed to the wind.

- See Testing: Effect of water-outlet temperature on engine output.

- See Tice, Percival S.: Carbureting conditions characteristic of aircraft engines.

- See Upton, G. B., and V. R. Gage: Investigation of muffling problem for aeroplane engines.

- See Vi Vi tip: Viking 16-cylinder airplane engine.

- See Villey, Jean: L'adaptation des moteurs à explosions aux hautes altitudes.

- See Villey, Jean: Les moteurs à explosions pour atmosphères raréfiées.

- See Villey, Jean: Les moteurs d'avion pour hautes altitudes.

- See Villey, Jean: Le problème de l'adaptation des moteurs à explosions aux

atmosphères raréfiées.

- See Villey, Jean. : Sur le choix de la densité de remplissage dans la construction

des moteurs d'aviation à explosion.

- See Vincent, Jesse G.: Forward step in American airplane engines.

—— See Vincent, Jesse G.: The engine: The heart of the airplane.

- See Vincent, Jesse G.: The Packard "altitude" aero-engine.

- See Vincent, Jesse G.: Special Packard aero engine for altitude work.

- See Vincent, Jesse G.: The ultimate aeroplane engine.

- See "W" engine: Development of 700-horsepower model "W" engine.

- See Wallace, John: The design of aeroplane engines.

- See Warner, E. P.: Variation of airplane-engine speed with speed of flight.

- See Winter flying—engines.

Engines. See Winterthur: The "Winterthur" aero engine.

- See Woltereck, Harms: Der Kleinflugzeugmotor.

- See Wright: New Wright aeronautical engines.

- See Wright: The "Wright" aero engine.

- See Wyman, W. W.: Effect of low-grade gasoline on engines.

- See Zeitlin: Zeitlin variable-stroke aero engine.

England. English aeronautical organization.

TJ. S. Air Service, Vol. 5, No. 5 (June 1921), New York, p. 29.

- The first British commercial airship.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 13 (Mar. 30, 1921), London, p. 308.

- On British aircraft of 1921.

The Aeroplane, Vol. 21, No. 19 (Nov. 9,1921), London, pp. 397-405.

- The resurrection of British air lines. The London-Paris service.

The Aeroplane, Vol. 20, No. 12 (Mar. 23,1921), London, pp. 270-272.

- The state of British aviation.

The Aeroplane, Vol. 20, No. 7 (Eeb. 16,1921), London, pp. 149-150

- See Commercial aeronautics: England-Australia flight.

- See Commercial aeronautics: England-Belgium air service.

•——- See Commercial aeronautics: England to Australia flight.

- See Routes, Air: Les grandes routes de l'air.

Enoch, O. The dynamometer hub for testing propellers and engines during flight.

Technical Notes, National Advisory Committee for Aeronautics, No. 59, July 1921, Washington (num.), pp. 18, diagrs.

Epoca. See Caproni: The Caproni Epoca.

Eppingee, Ctjet: Behandlung deutscher Patente in England.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 23. Heft (15. Der. 1921), München, pp. 340-341.

- Deutsche Luftfahrtbücherei.

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 14 (31. Juli 1920), Berlin, p. 209.

- Gewerblicher Rechtsschutz.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 10. Heft (31. Mai 1921), München, p. 154; 11. Heft (15. Juni), pp. 174-176.

- Gewerblicher Rechtsschutz in Amerika. .

111. Flug-Woche, 3. Jahrg., 13. Heft (22. Juni 1921), Leipzig, p. 244.

- Gewerblicher Rechtsschutz nach dem Friedensvertrag.

Zeitschr. Flugt. Motorulftsch., 12. Jahrg., 1. Heft (15. Jan. 1921),München, p. 9; 3. Heft (15, Feb.), pp. 41-42.

- Kongress für den gewerblichen Rechtsschutz.

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 22 (30. Nov. 1920), Berlin, p. 332.

- Ordentliche Mitglieder-Versammlung der Wissenschaftliche Gesellschaft für Luftfahrt.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 17. Heft (15. Sept. 1921), München, pp. 257-260, ill.

- Reform im Patentwesen.

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 18 (30. Sept. 1920), Berlin, pp. 267-268.

- Tropfenwagen.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 19. Heft (15. Okt. 1921), München, pp. 287-389.

Eppston, H. A. Process costs.

Journal of Accountancy, Vol. 29 (Apr. 1920), New York, pp. 266-275.

Equipment. Airplane protected from tampering.

Popular Mechanics, Vol. 34 (Oct. 1920), Chicago, p. 614.

- General instrument and oxygen equipment.

London, H. M. Stationery Office [1921].

- Making eyes on airplane cables.

Automotive Industries, Vol. 42 (Feb. 12,1920), New York, p. 453, ill.

Erfurt. Der zweite Fliegertag in Erfurt.

Hl. Flug-Woche, 3. Jahrg., 2. Heft (2. Feb. 1921), Leipzig, pp. 39, 42, 43, ill.

Ernoul. The Ernoul "sleeper."

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 26 (Dec. 28, 1921), Loudon, p. 624, diagr.

-■ Französischer Verkehrsflugzeugentwurf Ernoul.

Flugsport, 13. Jahrg., Nr. 23 (9. Nov. 1921), Frankfurt, pp. 494-495, ill.

- Le premier a von Ernoul.

Aéronautique, 3« année, No. 30 (nov. 1921), Paris, p. 480, ill.

Erwin, Wm. P. Three times shot down while getting nine. Inside story of how Lieut. Wm. P. Erwin, D. S. O., became an ace. '

U. S. Air Service, Vol. 4, No. 5 (Dec. 1920), New York, p. 35.

Escaille de l'. Du ministère de l'air.

Aéronautique, 3« année, No. 21 (févr. 1921), Paris, pp. 67-70.

Esnault-Pelterie, Robert. The R. E. P. litigation in France. Flight, Vol. 12, No. 33 (Aug. 12,1920), London, p. 878.

Espionage. Wie im Kriege auf dem Luftwege Spionage betrieben wurde. Flugsport, 13. Jahrg., Nr. 14 (6. Juli 1921), Frankfurt, pp. 315-318.

Espitallier, Georges. Aéronautique. La technique du ballon. Paris, O. Doin et Fils, 1917, pp. xviii, 492, ill. 2» éd., rev., cor. et augm.

- VIe exposition internationale.

Génie Civil, Vol. 76 (10, janv. 1920), Paris, pp. 29-35, ill., diagr.

Estimates. Air estimates, 1920-21.

Flight, Vol. 12, No. 12 (Mar. 18, 1920), London, p. 309.

- Air estimates, 1921-22.

Aeronautics, Vol. 20, n. s., No. 386 (Mar. 10,1921), London, pp. 159-161.

- The debate on the air estimates.

Aeronautics, Vol. 18, No. 335 (Mar. 18, 1920), London, pp. 232-234, 237.

Euler, August. August Euler.

Flugwelt, 2. Jahrg., 7. Heft (31. März 1920), Leipzig, pp. 198-199, port.

- Der Friedensvertrag und der Luftverkehr. Abschnitt von "Der Friedensvertrag und Deutschlands Stellung in der Weltwirtschaft."

Berlin, Julius Springer, 1921.

Reviewed in: Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 17. Heft (15. Sept. 1921), München pp. 265-266.

Europe. Europe turning to the monoplane for commercial use.

The Naviator, Vol. 1, No. 38 (Dec. 11, 1920), Pensacola, Fia., pp. 1-2.

- Commercial aeronautics in Europe.

Aerial Age, Vol. 13, No. 22 (Aug. 8,1921), New York, p. 524.

- Europe's way with flying.

Aerial Age, Vol. 13, No. 4 (Apr. 4,1921), New York, p. 75.

- The European air lines—II.

Aeronautics, Vol. 21, n. s., Nos. 404-405 (July 14-21,1921), London, pp. 26-29,41-43, ill.

Europe. Progress of aviation in Europe.

Aircraft Journal, Vol. 7, No. 13 (Sept. 27, 1920), New York, pp. 11-12.

- Touring Europe by air.

Aerial Age, Vol. 14, No. 8 (Oct. 31,1921), New York, p. 184.

- Touring Europe by air. A tine performance by the D. H. hire department.

Flight, No. 667, Vol. 13, No. 40 (Oct. 6,1921), London, pp. 661-662.

- See Dime, E. A.: What Europe is doing in aviation—Americans, please take

notice!

- See M., K. L.: European air lines.

Everdingen, E. van. De vliegdienst Holland-Engeland en het weer in Juli en Augustus.

Vllegveld, 4e jaarg., No. 23 (6 Nov. 1920), 's-Gravenhage, pp. 394-395.

Everling, E. The dynamometer hub and the flywheel of the engine. Aerial Age, Vol. 13, No. 20 (July 25,1921), New York, pp. 464-465.

- Gleitzahlen ausgeführter Flugzeuge.

Zeitschr. Flugt. Motorluitseh., 11. Jahrg., Helt 22 (30. Nov. 1920), Berlin, pp. 330-331.

- Luftkräfte und Bei werte.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 23. Heft (15. Dez. 1921), München, pp. 339-340.

- Vereinfachte Kennlinien für Flügelbespannstoffe.

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 2 (31. Jan. 1920), Berlin, pp. 23-25.

Everstag, Robert W. d'. L'aéronautique suisse. L'Air, No. 17 (20 juil. 1920), Paris, p. 21.

- Propos de circonstance.

Suisse Aérienne, 3« année, No. 6, 1921, pp. 73-74.

- Propos de la quinzaine.

Suisse Aérienne, 3« année, 1921, Nos. 7, 14-20, Berne, pp. 89-91, 201-202, 217-219, 241-243, 273-274, 289-291, ill.

- La coupe Gordon-Bennett des sphériques 1921.

Suisse Aérienne, 3= année, No. 15-16,1921, Berne, pp. 224-227, ill.

- Propos de la quinzaine.

Suisse Aérienne, 2« année, 1920. Berne, pp. 98,114, 130, 154, 170-171, 186,202, 218,234, 250-251, 298-299, 314, 330-331, 346, 362.

Ewald. Luftbildwesen.

Flugwelt, 2. Jahrg., 1920, Leipzig, pp. 113-116, 144-147, 173-177, 244-246.

- Flugzeug und Kino.

III. Flug-Woche, 3. Jahrg., 10., 11 Heft (11., 25. Mai 1921), Leipzig, pp. 190-191, 208-209.

Ewald, Erich. Die Flugzeugphotographie, ihr heutiger Stand und künftiger Ausbau.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 9. Heft. (17. Mai. 1921), München, pp. 132-133.

- Stereoskopie und ihre Anwendung auf die Untersuchung des Fliegerbildes.

München, R. Oldenbourg, 1921, pp. 46, ill.

Reviewed in: III. Flug-Woche, 3. lahrg., 13. Heft (22. Juni 1921), Leipzig, p. 259. Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 16 (31. August 1920), Berlin, pp. 233-236, ill.

- Der Wert der Raumbildaufnahmen vom Flugzeug.

111. Flug-Woche, 3. Jahrg., 5. Heft (2. März 1921), Leipzig, pp. SS-91, ill.

Ewell, Arthur W. A plea for aerial bombing.

Air Power, Vol. 6, No. 1 (Jan. 1920), New York, pp. 192-193, ill.

—■—■ Testing aerial bombs.

TJ. S. Air Service, Vol. 4, No. 2 (Sept. 1920), New York, pp. 27-28.

44439—25-10

Ewing, j. A. Thermodynamics for engineers.

Aëron. Journ., Vol. 25, No. 132 (Dec. 1921), London, p. 619.

Exhaust springs. See Simmons, L. P. G.: Investigation of the fracture of exhaust springs.

Exhibitions. The aero show, July 9-20.

Aeronautics, Vol. 19, No. 350 (July 1, 1920), London, p. 4.

- The aero show, Olympia.

Aeronautics, Vol. 19, Nos. 351-354 (July 8-29, 1920), London, pp. 27-36, 50-59, 65, 71-82, 102106, ill.

- Eine internationale Flugschau in Wien.

Flugsport, 13. Jahrg., Nr. 11 (25. Mai 1921), Frankfurt, p. 254.

- The exhibits on the steel pier at Atlantic City.

Flying, Vol. 9, No. 5 (June 1920), New York, p. 322.

—— International aero exhibition.

Engineer, Vol. 130 (July 16-23, 1920), London, pp. 52-54, 62, 78-80, 86, ill., diagr. Engineering, Vol. 110 (July 16-30,1920), London, pp. 74-79,82, 105-109, 118, 137-142, pi. 14-15, ill., diagr.

- Internationale Luftfahrt-Ausstellung Paris.

Luftweg, Nr. 49-50 (15. Dez. 1921), Berlin, pp. 341-343, ill.

- The Olympia aero show at a glance.

Flight, Vol. 12, No. 28 (July 8, 1920), London, pp. 712-713, ill.

—— See Atlantic City: Aeroplanes and motors exhibited at Atlantic City.

■-■ See Bradley, W. F.: First post war aircraft exhibition held in France.

—— See Chicago: The Chicago aero show.

- See Chicago: Chicago aeronautical exposition.

- See Chicago: The Chicago aeronautical show.

- See Chicago: Chicago air show presents significant technical developments.

- See Engines: International aero exhibition.

- See Espitallier, G.: VIe exposition internationale.

- See London: La VIe exposition internationale d'aéronautique de Londres.

(9-20 juillet 1920).

—— See Manufacturers' Aircraft Association: Aircraft makers exhibit the 1920 commercial models; second national show of the Manufacturers' Aircraft Association.

- See New York: New York aero show.

- See Olympia: The aeroplanes and engines at Olympia.

- See Olympia: Aeroplanes at Olympia.

- See Olympia: The Air Ministry exhibits at Olympia.

- See Olympia: Aircraft exhibited at the recent Olympia show in London. •

- See Olympia: Commercial development rules Olympia aero show.

- See Olympia: A forecast of the exhibits of accessories and material at Olympia.

- See Olympia: The lesson of Olympia, 1914-20.

- See Paris: The Paris aero show at a glance.

- See Paris: The Paris aero show 1919.

- See Paris: The Paris aeronautical exposition.

Exhibitions. See Paris: Paris aviation show.

- See Paris: The Paris show.

- See Prague: The first international aero exhibition, Prague.

- See Sullivan, L. G.: Air show brings back fond memories to old-time motor-car

men.

Exidb. Accumulators in the making. A visit to the "Exide " factory. Flight, vol. 12, no. 10 (Mar. 4, 1920), London, pp. 275-276, ill.

Expenditures. The aviation service.

Amer. Mach., Vol. 52, No. 14 (Apr. 1, 1920), New York, p. 755.

Experimental station. The future of the aeroplane experimental station. A suggestion.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 4 (Jan. 26, 1921), London, p. 83.

Expositions. L'Exposition du Sous-Secrétariat d'Etat de l'Aéronautique. Aéronautique, 3= anné , No. 31 (déo. 1921), Paris, pp. 507-508.

- See Exhibitions.

Eynac, Laurent. L'aéronautique dans le nouveau ministère. M. Laurent Eynac. L'Aérophile, 29 année, Nos. 1-2 (1"-15 janv. 1921), Paris, p. 22.

- Aviateurs contemporains. Laurent Eynac et Pierre-Etienne Flandin.

L'Aérophile, 29 année, Nos. 23-24 (1"-15 déc. 1921), Paris, pp. 353-354, port.

—■— Extrait du discours de M. Laurent Eynac.

L'Aérophile, 29 année, Nos. 23-24 (1"-15 déc. 1921), Paris, pp. 380-381.

Eytinge, Bruce.' Cloud flying.

Aerial Age, Vol. 13, No. 20 (July 25, 1921), New York, pp. 461, 467.

- Cross-country cloud flying.

Aviation, Vol. 11, No. 7 (Aug. 15,1921), New York, pp. 192-193, ill.

- Flying guide and log book.

New York, John Wiley & Sons, 1920, pp. 150, ill. Flying guide and list of landing fields.

- Landing field guide and pilots' log book.

New York, Eytinge & Uden, 1920.

F.

F., L.-P. Agrafage de sûreté pour parachutiste.

L'Aérophile, 29 année, Nos. 11-12 (l<=r-15 juin 1921), Paris, pp. xviii-xix, ill.

Fabrics. The action of air and water on fabric.

Tech. Eept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 435-436.

--The calendering of aeroplane fabric.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 562-578, ill.

■-- The effect of water shrinkage of a fabric on the strength of the component yarns.

Tech. Bept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 437-438.

■- Fabrics and dopes.

Report of the Aeronautical Research Committee for the year 1920-21, H. M. Stationery Office, Cmd. 1458, London, 1921, pp. 50-51.

- Modern airship fabrics.

Textile World, Vol. 58 (Sept. 11,1920), New York, p. 1685.

- New rubberized airship fabrics.

India Rubber World, Vol. 63 (Oct. 1920), New York, p. 25.

Fabrics. Report on the comparative weathering qualities of British and German doped fabric.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 1065-1067.

- Report on the contraction of fabric.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 431-434.

——• Report on the protection of aeroplane fabric.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 527-540.

- Shrinking fabric on wings.

Aerial Age, Vol. 13, No. 14 (June 13,1921), New York, p. 329.

- What the rubber chemists are doing.

India Rüther World, Vol. 63 (Nov. 1920), New York, pp. 103-104.

- See Aston, F. W.: Fabric and dope, with special reference to deterioration of

strength and tautness.

- See Atkins, W. R. G., and Guy Barr: Report on the use of dopes and fabrics in

Egypt.

——■ See Balaban, K.: Einiges über das Materialprüfwesen in Flugzeugfabriken.

- See Barr, Guy: The deterioration of rubbered balloon fabrics under the action

of light.

- See Barr, Guy: The liability to ignition of balloon fabrics.

- See Barr, Guy: Tropical exposure of airship fabric.

- See Dyer, J. W. W.: Airship fabrics.

——• See Fokker: Experiments with parts of Fokker show noninflammable fabric used.

——• See Gardner, H. A.: Aircraft technical note on dopes and fabrics.

- See O'Gorman, Mervyn: Report on a series of tests on fabric weathered in

Somaliland.

- See Shakespear, G. A.: A new permeability tester for balloon fabrics.

——• Taylor, Fred., and Drayton, Edwin Earle: . . . Manufacturing and laboratory tests to produce an improved cotton fabric.

——• See Walen, E. D., and R. T. Fisher: Fabric fastenings.

Fagan, R. T. Is flying dangerous?

Aeronautics, Vol. 18, No. 324 (Jan. 1, 1920), London, p. 8.

Fage, Arthur. Airscrews in theory and experiment.

New York, T>. Van Nostrand Company, 1920, pp. ix, 198, ill., diagrs. Bibliography,

pp. 191-195. London, Constable and Co., 1920, pp. 208, ill.

- An analysis of the energy account of an airscrew with an application to the case

of the tandem airscrew (with appendix).

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 423-429.

Fage, Arthur, and H. E. Collins. Dependence of the efficiency of an airscrew on the speed of rotation and the diameter, with a direct reference to the question of engine gearing.

Tech. Rept. Advis. Com. Aeronautics 1917-18, Vol. 2, London, 1921, pp. 388-399, diagr.

Fage, Arthur, H. E. Collins, and T. H. Fewster. Description of apparatus for measurement in a wind tunnel of the performance of an airscrew or the windage torque of a rotary engine.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 1, London, 1921, pp. 54-66, diagr.

Fage, Arthuk, H. E. Collins, and J. H. Fewstee. The effect of the inflowing velocity of the air on the efficiency of an airscrew, with a special reference to the case of tandem airscrews of large machines.

Tech. Kept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 400-408.

- An experimental investigation into the accuracy of the airscrew dynamometer

at the National Physical Laboratory.

Tech. Kept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 278-283, diagr.

Fage, Aethdr, and H. E. Collins. Experiments at high speeds, on six aerofoils suitable for airscrew design.

Tech. Rept. Advis. Com. Aeronautics, 1916-1917, Vol. 1, London, 1920, pp. 101-111, diagr.

Fage, Arthur, and J. D. Coales. Experiments with two aerofoils of high-aspect ratio.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 1, London, 1921, pp. 162-171, diagr.

Fage, Arthur, and H. E. Collins. An investigation of the mutual interference of an airscrew and body of the "tractor" type of aeroplane.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 340-348, diagr

—— An investigation of the magnitude of the inflow velocity of the air in the immediate vicinity of an airscrew, with a view to an improvement in the accuracy of prediction from aerofoil data of the performance of an airscrew.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 350-370, diagr.

- An investigation of the mutual interference of airscrew blades.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 326-347,01., diagr.

- An investigation of the mutual interference of the airscrew, body, and wings of

the tractor aeroplane, B. E. 2E.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 349-362 diagr.

- An investigation of the mutual interference of airscrews and bodies of the

"pusher" type.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 312-325, ill., diagr.

- An investigation of the strength of two airscrews for F. E. 2B.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 468-469.

- Measurements of the drag of the bodies of a model fighter and bomber machine.

Tech. Eept. Advis. Com. Aeronautics, 1917-18, Vol. 1, London, 1921, pp. 248-251, diagr.

- A preliminary investigation of the mutual interference of an airscrew and a

tractor body, as affected by the fairing of the nose of the body.

Tech. Bept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 363-375, diagr.

- The "scale-speed" effect on a model airscrew of small diameter.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 530-534, diagr.

- Some experiments on helicopters.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 520-529, diagr.

- Some experiments with tandem combinations of airscrews.

Tech. Rept. Advis. Com. Aeronautics, 1917-19, Vol. 2, London, 1921, pp. 409-422, diagr.

- Some notes on the calculation of the working stresses of an airscrew.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 440-457, diagr.

- Tests on five model airscrews and an experimental investigation of the interferences between these airscrews and a model of the end of the whirling arm at the Royal Aircraft Factory.

Tech Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 275-292, diagr.

Fage, Arthur. The whirling and transverse vibrations of a rotating airscrew and its shaft.

Tech. Kept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 458-470.

Fage, Arthur, and H. E. Collins. Windage experiments with a model of the rotary engine B. R. 1.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 376-387, diagr.

Fage, Arthur,, and H. E. Collins. A windmill to drive a wireless set of power one kilowatt.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 348-349, diagr.

Fage, Arthur. See Bairstow, L., and A. Fage: Oscillations of the tail plane and body of an aeroplane in flight.

- See Bairstow, L., A. Fage, and H. E. Collins: The relation between the efficiency of a propeller and its speed of rotation.

F. A. I. La conférence de la Fédération aéronautique internationale a Genève, les 8, 9, 10 septembre 1920.

Suisse Aérienne, 2« année, No. 18 (30 sept. 1920), Berne, pp. 266-274, ill.

- See Pittard, Edmond: Rapport présenté à la conférence de la F. A. I. à Genève,

le 8 sept. 1920.

Fairchild. The Fairchild automatic camera.

Aviation, Vol. 8, No. 12 (July 15, 1920), New York, p. 478, ill.

- See Elton, Robert W.: The Fairchild distant control for aerial cameras.

Fairchild, Muir S. Experimental night flying by flight section, McCook Field. Aerial Age, Vol. 13, No. 22 (Aug. 8, 1921), New York, pp. 516-517.

Fairet. The Fairey amphibian.

Aeronautics, Vol. 19, No. 362 (Sept. 23, 1920), London, p. 223, diagr.

- Fairey flying boat.

Aerial Agr, Vol. 13, No. 8 (May 2,1921), New York, p. 182.

- The Fairey "Titania."

Aerial Age, Vol. 13, No. 5 (Apr. 11,1921), New York, p. 110.

- The Fairey type HID seaplane.

Aviation, Vol. 11, No. 12 (Sept. 19,1921), New York, p. 341, 111.

Plight, No. 660, Vol. 13, No. 33 (Aug. 18,1921), London, pp. 552-557, 558-560, ill.

- Our new large flying boats. The Fairey "Titania" and the Vickers-Saunders

"Valentia."

Flight, No. 637, Vol. 13, No. 10 (Mar. 10,1921), London, p. 169.

Fairey Aviation Co. (Ltd.). See Great Britain: Modern British aircraft.

Fairey, C. R. Pioneers of British aviation—XXVI. Mr. C. R. Fairey. Aeronautics Vol. 17, No. 327 (Jan. 22, 1920), London, pp. 81-82, ill.

Fairleads. Detachable fairleads for aircraft.

Aviation, Vol. 11, No. 6 (Aug. 8,1921), New York, p. 165, ill.

Fales, E. N., and F. W. Caldwell. The scope of wind-tunnel research.

Aerial Age, Vol. 14, Nos. 11-12 (Nov. 21-28, 1921), New York, pp. 248-250, 270-272, ill., diagr.

Fales, E. N. Le tunnel de MacCook Field.

Aéronautique, 3 année, No. 28 (sept. 1921), Paris, pp. 357-360, ill.

Fales, E. N. See Caldwell, F. W., and E. N. Fales: Physical basis of air-propeller design—study of flight vortices; abstracts.

•- See Caldwell, F. W., and E. N. Fales: Wind-tunnel studies in aerodynamic

phenomena at high speed.

Fan dynamoters. See Gray, G. F., J. W. Reed, and P. N. Elderkin: Air fans for driving generators on airplanes.

- See Wood, Karl D.: A variable-speed fan dynamometer.

Far-East aviation and automobile industry.

Vol. 1,1920.

Farman. L'avion "Sport-Farman."

Aéronautique, 1° année, No. 10 (mars 1920), Paris, pp. 440-441, ill.

- Farman Dreimotoren Goliath.

Flugsport, 13. Jahrg., Nr. 13 (22. Juni 1921), Frankfurt, pp. 286-287.

- The Farman Goliath transport airplane.

Aviation, Vol. 7, No. 11 (Jan. 1, 1920), Now York, pp. 477-478, ill.

- The Farman sport airplane.

Aviation, Vol. 8, No. 3 (Mar. 1, 1920), New York, p. 104, ill.

- Les nouveaux avions Farman.

Aéronautique, 3« année, No. 30 (nov. 1921), Paris, pp. 447-449, ill.

- Some new Farman aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 9 (Mar. 2,1921), London, p. 212, ill. Aerial Age, Vol. 14, No. 2 (Sept. 19,1921), New York, p. 38.

- Some recent Farman aeroplanes.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 8 (Aug. 24, 1921), London, pp. 174-176, ill.

- Vingt-quatre heures sans escale.

Aéronautique, 2« année, No. 13 (juin 1920), Paris, pp. 19-20, ill.

Farman, Andrée. See Blanchet, Georges: Nos nouvelles aviatrices.

- See Fromentin, J. : Les avions commerciaux Farman.

Farman, Henry. Der erste Ueberlandflug in Europa.

Aut. Flugv;, Nr. 9 (Sept. 1921), Berlin, p. 338, ill.

Fastje. The Fastje compressed-air motored model.

Aerial Age, Vol. 13, No. 18 (July 11, 1921), New York, p. 425, ill.

Faunce, Cy Q. The air liner and its inventor, Alfred W. Lawson, with a summary of the entire aeronautical movement.

Columbus, Ohio, Rockeastel Publishing Co. [1921], pp. 206, ill.

Faure-Favier, Louise. Après de record de la durée: une interview de Bossoutrot. Vie Aérienne, No. 192 (15 juil. 1920), Paris, p. 1223, ill.

- Un champ d'atterrissage dans le champ de 1'Angelus.

Vie Aérienne, 5« année, No. 6 (11 sept. 1920), Paris, pp. 87, ‘11.

- Visibilité.

Vie Aérienne, 5= année, No. 7 (18 sept. 1920), Paris, p. 103.

Faurote, Fay Leone. "Let us then be up and doing."

tj. S. Air Service, Vol. 4, No. 4 (Nov. 1920), New York, pp. 15-18, ill.

- Selling the public on flying.

U. S. Air Service, Vol. 3, No. 3 (Apr. 1920), New York, p. 13.

Fayolle. Du rôle de l'aviation dans la guerre.

Aéronautique, 3« année, No. 30 (19 nov. 1921), Paris, pp. 425-126.

Fear. See Hoffman, C. G.: Ordeal by fire; a note on the psychology of fear.

Fechet, J. E. Report on Reserve Officers' Training Corps.

U. S. Air Service, Vol. 5, No. 2 (Mar. 1921), New York, p. 35.

Fedden, Roy. Static radial air-cooled engines.

Flight, No. 677, Vol. 13, No. 50 (Dec. 15,1921), London, pp. 827-831, 111.

Federal control. See Philbin, S. H.: The need of Federal control in commercial aviation.

Fédération Aéronautique Internationale. Conférence de la F. A. I. à Genève les 8, 9, 10 septembre 1920.

L'Aérophile, 28 année, Nos. 15-16 (1<*-15 août 1920), Paris, p. 235.

Fédération Aéronautique Internationale. Fédération Aéronautique Internationale. Aeronautics, Vol. 19, No. 356 (Aug. 12, 1920), London, p. 133.

- The Fédération Aéronautique Internationale—Madrid Conference.

The Aeroplane, Vol. 21, No. 21 (Nov. 23, 1921), London, p. 519.

——- Fédération Aéronautique Internationale records.

Aeronautics, Vol. 19, No. 373 (Dec. 9, 1920), London, p. 419.

- Special commission organizing the first aerial derby around the world under

the rules of the Fédération Aéronautique Internationale.

Bulletins dated from various countries. No. 1, Tokio, Dec. 19, 1919. No. 10,1920.

- Réunion du Comité à Paris le 10 janvier 1921.

L'Aérophile, 29 année, Nos. 1-2 (1»'-15 janv. 1921), Paris, p. 23.

- See Perrin, Harold E: Fédération Aéronautique Internationale. Notes on the

Geneva Conference.

Felgate, Russell A. Wing dope from historic, technical side. U. S. Air Service, Vol. 3, No. 6 (July 1920), New York, p. 20.

Ferguson, S. New aerological apparatus.

Monthly Weather Beview, Vol. 48, No. 0 (June 1920), Washington, pp. 317-322, 111.

Ferrari, Cristoporo. Italian aviation.

Aviation, Vol. 10, No. 6 (Feb. 7, 1921), New York, p. 177.

Ferrero, A. Ascensione libera del 6 giugnio 1920.

LAeronatica, anno 3, Num. 5-6 (luglio-agosto 1920), Roma, p. 23,0.

Ferrous materials. See Judge, A. W.: Aircraft and automobile materials of construction. Vol. 1. Ferrous materials.

Ferry, Georges. L'aviateur et le médecin.

LAérophile, 28 année, Nos.7-8 (1«- 15 avril 1920), Paris, pp. 113-116.

Fessenden, Reginald A. The Fessenden peloris (wireless compass) a caution as to its use.

Electrician, Vol. 83, No. 2170 (Dec. 19, 1919), pp. 719-721, figs.

Fewster, T. H. See Fage, Arthur, H. E. Collins, and T. H. Fewster: Description of apparatus for measurement in a wind tunnel of the performance of an airscrew or the windage torque of a rotary engine.

--See Fage, Arthur, H. E. Collins, and T.H. Fewster: The effect of the inflowing

velocity of the air on the efficiency of an airscrew, with a special reference to a case of tandem airscrews of large machines.

F. I. A. T. biplane. The F. I. A. T. 12-seater biplane.

Flight, Vol. 12, No. 47 (Nov. 18, 1920), London, pp. 1189-1191, diagr.

Fiat. Fiat 10-passenger airplane.

Aviation, Vol. 11, No. 5 (Aug. 1, 1921), New York, p. 139, diagr.

- Fiat 12-passenger aeroplane.

Aerial Age, Vol. 11, No. 6 (Apr. 12, 1920), New York, pp. 185-187, ill., diagr. Aeronautics, Vol. 18, No. 343 (May 13, 1920), London, p. 377, diagr.

Engineering Division, Air Service, Technical Orders No. 16 (May, 1920), Dayton, Ohio, pp. 98-101, diagr.

- New Fiat airplane and engine.

Aviation, Vol. 8, No. 1 (Feb. 1, 1920), New York, p. 14, ill.

- New Fiat engine.

Aerial Age, Vol. 10, No. 18 (Feb. 26, 1920), New York, p. 658, ill. 12-cylinder, 400 horsepower.

-- The new Fiat.

Aeronautics, Vol. 19, No. 357 (Aug. 19, 1920), London, p. 154, ill,

Fiat. The 650-horsepower Fiat aircraft engine.

Aerial Age, Vol. 10, Nos. 10, 17 (Feb. 2, 9, 1920), New York, pp. 599, 629-631, ill.

- The 650-horsepower Fiat engine.

Engineering Division, Air Service, Technical Orders No. 17 (June 1920), Dayton, Ohio, pp. 103-104.

- 300-horsepower Fiat model A-12 engine.

Aerial Age, Vol. 13, No. IS (July 11,1921), New York, pp. 415-416, ill.

- Two new Fiat aero engines.

Flight, Vol. 12, No. 5 (Jan. 29, 1920), London, pp. 126-127, ill.

—-—■ See Engines: The new Fiat type A-18.

- See MacCoull, Neil: The Fiat 600-horsepower aircraft engine.

Field, M. B. Navigational magnetic compass considered as an instrument of precision.

Journ. Inst. Electrical Engineers, Vol. 57 (May 1919), New York, pp. 349-3s6, ill., diagr. Scient. Amer. Suppl., Vol. ss (Nov. 22 1919), New York, pp. 302-303.

Film. Das grosse Fliegerfilm.

111. Flug-Woche, 3. Jahrg., 25. Heft (7. Dez. 1921). Leipzig, pp. 515-510. Luftweg, Nr. 49-50 (15. Dez. 1921), Berlin, pp. 346-347.

Filon, L. N. G. See Baker, T. Y., and L. N. G. Filon: Position flying in aircraft during long-distance flights over the sea.

Fine, Carl. Einiges von der Entwicklung unserer Flugzeugkameras.

Flugwelt, 2. Jahrg., 11., 12. Heft (26. Mai, 9. Juni 1920), Leipzig, pp. 315, 338-340, ill.

- Höher hinauf.

Flugwelt, 2. Jahrg., 2. Heft (4. Feb. 1920), Leipzig, p. 66.

- Luftbildwesen: Reihenbild und Karte.

Flugwelt, 2. Jahrg., 14. Heft (7. Juli 1920), Leipzig, pp. 389-390, ill.

--Luftbildwesen: zum Wiederaufbau des Luftbildwesens.

Flugwelt, 2. Jahrg., 15. Heft (21. Juli 1920), Leipzig, pp. 413-415.

---Militärtechnisches Deutsch.

Flugwelt, 2. Jahrg., 2. Heft (21. Jan. 1920), Leipzig, pp. 50-51. ill.

- - Das Reihenbild als Kartenersatz.

Flugwelt, 2. Jahrg., 10. Heft (12. Mai 1920), Leipzig, p. 292.

Finsbury. Finsbury and district model research association.

Flight, No. 647, Vol. 13, No. 20 (May 19,1921), London, pp. 349-350.

Fioravanzo, Giuseppe. L'aviazione e 1'esplorazione strategica dei nostri mari. Kivista Marittima (nov.-dic. 1920), Roma, pp. 3-18.

Fire patrol. See Arnold, H. H.: Aerial forest-fire patrol, 1920.

- See Forestry: A year of the aerial forest-fire patrol.

Fire prevention. Fire prevention on heavier-than-air craft.

Report of the Aeronautical Research Committee for the year 1920-21, H. M. Stationery Office, Cmd. 1458, London, 1921, pp. 39-46.

Fireproofing. Fireproofing airplanes.

The Ace, Vol. 2, No. 5 (Dec. 1920), Los Angeles, p. 11. Aircraft Journal, Vol. 7, No. 1 (July 5, 1920), New York, p. 15.

- Tests of fireproof equipment.

Aeronautics, Vol. 19, No. 358 (Aug. 26, 1920), London, p. 166.

- See Dope: Tests of fireproof airplane dope and equipment.

- See Tests: Tests of fireproof equipment.

Fires. See Polk, George W., jr.: Fires in airplanes.

Fischer, Alexander. Tafel für die Berchnung von Dampf- und Luftfleitungen. Zeitschr. Ver. Deutsch. Ing., Bd. 65, Nr. 18 (30. Apr. 1921), Berlin, pp. 469-470.

Fish patrol. Aerial fish patrol.

Scient. Amer., Vol. 123 (July 24, 1920), New York, p. 89.

Fisher, R. T. See Walen, E. D., and R. T. Fisher: Fabric fastenings.

Fisheries. Aerial fish patrol.

Scient. Amer., Vol. 123 (July 24, 1920), New York, p. 89.

Fishes. See Tevis, M.: Do fish swim as airplanes fly?

Fiske, Bradley M. See United States Congress. House Committee on Naval Affairs: Naval policy of the United States.

Fittings. See Black, Archibald: The heat treating of brazed fittings for aircraft.

Fitzgerald. See Rayleigh: Lord Rayleigh's exposition of Fitzgerald's theory of flapping flight.

Flack, Martin. The human machine in relation to flying.

Aeronautics, Vol. 19, No. 369 (Nov. 11, 1920), London, pp. 342-345. Aëron. Journ., Vol. 24, No. 120 (Dec. 1920), London, pp. 650-663.

Flack, Martin William. See Great Britain. Privy Council. Medical Research Council: The medical problems of flying . . .

Flanders, L. Howard. The flight of the albatross.

Aeronautics, Vol. 19, No. 363 (Sept. 30,1920), London, p. 245.

Comment on report published by the National Advisory Committee for Aeronautics.

, —— On aerial tramps.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 18 (May 5, 1920), London, pp. 905-906.

Flandin, Pierre-Étienne. Allocution de M. P.-E. Flandin.

L'Aérophile, 29 année, Nos. 23-24 (ler-15 dec. 1921), Paris, pp. 379-380.

■- Aviateurs contemporains. Laurent Eynac et Pierre-Étienne Flandin.

L'Aérophile, 29 année, Nos. 23-24 (1«-15 déc. 1921), Paris, pp. 353-354, port.

■- Bilan de l'aéronautique française en 1920.

Aéronautique, 3<= année, Nos. 19-20 (janv. 1921), Paris, pp. 265-266.

- International air traffic regulations.

Aeronautics, Vol. 20, n. s., No. 384 (Feb. 24, 1921), London, p. 131.

- Le statut du personnel navigant.

Aéronautique, 3« année, No. 25, 1921, Paris, pp. 225-226.

- See La Vaulx, Henry de: Lettre ouverte â M. Pierre-Étienne Flandin.

Flapping flight. See Chatley, Herbert: The problem of flapping flight.

- See Rayleigh: Lord Rayleigh's exposition of Fitzgerald's theory of flapping

flight.

Flapping wing. See Chatley, Herbert: Application of theory to ornithopters. The action of the flapping wing.

Fleming, J. The thermionic valve in wireless telegraphy and telephony.

Eoyal Institution of Great Britain, weekly evening meeting, Friday, May 21,1920, pp. 29, ill.

Fleurieu, P. de. L'avenir de l'aviation.

Vie Aérienne, No. 165 (1<* jan. 1920), Paris, pp. 870-871, ill.

Flight. From wing to paddle.

Independent, Vol. 104 (Oct. 23, 1920), New York, pp. 134-135, ill.

Flint, A. H. Why flying is safe.

The Naviator, Vol. 1, No. 6 (Mar. 20, 1920), Pensacola, Ha., p. 5. «

Floats. Collapsible floats for aeroplanes.

Scient. Amer. Supplement, Vol. 88 (Dec. 6, 1919), New York, p. 341.

- Model float construction.

Aerial Age, Vol. 13, Nos. 10-11 (May 16-23,1921), New York, pp. 233, 257.

- See Lewe: Festigkeitsprüfungen eines Holz- und eines Duralschwimmers.

Florheim, Nikolaus Wagneb Edler von. Die Aussichten der Luftfahrt in Oesterreich.

Luftweg, Jahrg. 4, Heft 36-37 (23. Sept. 1920), Berlin, pp. 5-7, ill.

Florida. Flying popular in Florida.

Aerial Age, Vol.10, No. 21 (Mar. S, 1920), New York, p. 775, ill.

Floyd, Anna. The rough road to the stars.

London, T. Werner Laurie, Ltd., 1920, pp. 247.

Flugtechnische Verein Dresden. Der Flugtechnische Verein Dresden. Flugsport, 12. Jahrg., Nr. 9 (28. Apr. 1920), Frankfurt a. M., p. 206.

Flugzeug gegen Schlachtschiff.

Luftweg, Nr. 47-48 (1. Dez. 1921), Berlin, pp. 335-338.

Fluey, Walter. À la mémoire de Walter Flury.

Suisse aérienne, 2« année, No. 11 (10 juin 1920), Berne, pp. 164-166, ill.

"Fly!" Aircraft yearbook, 1920.

New York, 1920, Doubleday, Page & Co.

Flying. My wild ride with youth in an aeroplane.

American Magazine, Vol. 89 (Jan. 1920), Springfield, Ohio, pp. 14-15.

- New York, 1912-1921; established in 1912; ceased publication June, 1921, as

an individual magazine and combined with Aerial Age weekly with the August 1, 1921, number of the latter.

- To fly or not to fly; symposium.

Collier's, Vol. 65 (Mar. 6, 1920), New York, p. 24, ill.

- Six months'flying. October 1, 1920, to March 31, 1921.

Aeronautics, Vol. 20, n. s., No. 400 (June 16, 1921), London, pp. 436^37.

Flying boats. Acetylene welded flying boat carries 10 tons.

Sheet Metal Worker, Vol. 11 (Nov. 12, 1920), New York, p. 336, ill.

- Flying boat construction.

Aer. Eng. Suppl. The Aeroplane. Vol. 20, No. 12 (Mar. 23, 1921), London, pp. 277-278.

- A giant flying boat.

Aircraft Journal, Vol. 6, No. 11 (Mar. 13,1920), New York, p. 21, diagr. Pulex.

- Hochziehbare Fahrgestelle für Flugboote.

Flugsport, 13. Jahrg., Nr. 8 (13. Apr. 1921), Frankfurt, pp. 174-175, ill.

- A large flying boat.

Aviation, Vol. 9, No. 5 (Oct. 1, 1920), New York, p. 149, ill.

- Oil prospecting with flying boats.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 14 (Apr. 6, 1921), London, p. 328.

•- Travel by flying boat.

Aircraft Journal, Vol. 7, No. 5 (Aug. 2, 1920), New York, pp. 7-8, ill.

•- See Baatz, Gotthold: Schwimmerflugzeug und Flugboot.

Flying boats. See Baker, G. S.: Flying boats: The form and dimensions of their hull.

- Se«Fairey: Our new large flying boats. The Fairey "Titania" and the Vickers-

Saunders "Valentia."

- See Nicolson, David: Flying-boat construction. *

Flying fields. Practice fields for reserve aviators.

Aviation, Vol. 8, No. 11 (July 1, 1920), New York, p. 434. Flying fish. See Clayton, H. H.: The "flight" of flying fish.

- See Dowd, R. E.: The aeronautics of the flying fish.

- See Fishes.

- See Tevis, M. : Habits and habitats of flying fish.

Flying without wings.

Literary Digest, Vol. 64 (Jan. 3, 1920), New York, pp. 25-26, ill.

Foch, Ferdinand. Foch gives figures on German aircraft.

Aerial Age, Vol. 12, No. 20 (Jan. 24, 1921), New York, p. 520.

Föppl, August. Drang und Zwang, eine höhere Festigkeitslehre für Ignenieure, von Dr.-Ing. Aug. Föppl und Dr. Ludwig Föppl.

München und Berlin, 1920, E. Oldenbourg, pp. 390, ill. * Reviewed in: Zeitsehr. Fingt. Motorluftsch., 11. Jahrg., Heft 18 (30. Sept. 1920), Berlin,

pp. 268-269.

Foerster. Welche Aufgaben erwachsen heutzutage den Luftfahrtvereinen und wie werden sie ihnen Gerecht?

III. Flug-Woche, 3. Jahrg., 12. Heft (8. Juni 1921), Leipzig, pp. 222-223.

Fog. Instrument guides planes in fog.

Aerial Age, Vol. 14, No. 16 (Dec. 26, 1921), New York, p. 365.

-See Gramont, Armand de, Duc de Guiche: La navigation aérienne par temps de

brume.

- See Wireless: Fog-bound airplanes guided by wireless.

Fokker. American Minister visits Fokker works.

Aviation, Vol. 10, No. 16 (Apr. 18,1921), New York, p. 495.

- Concerning the Fokker monoplane.

Aer. Ang. Suppl. The Aeroplane, Vol. 20, No. 21 (May 25, 1921), London, pp. 488-489.

--Experiments with parts of Fokker show noninflammable fabric used.

The Naviator, Vol. 1, No. 7 (Mar. 27, 1920), Pensacola, Fia., p. 5.

- A flying model of the Fokker biplane.

Aerial Age, Vol. 12, Nos. 20-21 (Jan. 24-31, 1921), New York, pp. 521; 547, diagr.

- The Fokker commercial aeroplane. Type F. III.

Aeronautics, Vol. 20, n. s., No. 397 (May 26, 1921), London, pp. 378-379, ill., diagr.

- Fokker commercial airplanes.

Aviation, Vol. 9, No. 12 (Dec. 6,1920), New York, pp. 385-386, ill.

- The Fokker commercial express biplane, type Oil.

Aerial Age, Vol. 13, No. 7 (Apr. 25, 1921), New York, p. 151, ill.

- The Fokker commercial express, type C. II.

Aviation, Vol. 10, No. 18 (May 2,1921), New York, pp. 565-566, ill.

- The Fokker F III six-seater monoplane.

Aerial Age, Vol. 13, No. 12 (May 30, 1921), New York, pp. 271-272, ill. Aviation, Vol. 10, No. 23 (June 6,1921), New York, pp. 717-718, ill.

--Der Fokker F IV.

Luftweg, Nr. 47-48 (1. Dez. 1921), Berlin, pp. 331-333, ill.

Fokker. The Fokker "F. IV." A Dutch 1922 model.

Flight, No. 679, Vol. 13, No. 52 (Deo. 29, 1921), London, pp. 858-859, ill.

- The Fokker F III commercial monoplane; 230-horsepower Siddeley-"Puma"

engine.

Flight, No. 648, Vol. 13, No. 21 (May 26, 1921), London, pp. 355-359, ill.

•- De Fokker in America.

Vliegveld, 5e jaarg., No. 6 (12 Maart 1921), Amsterdam, pp. 90-91, ill.

- Fokker plans air freight train as future carrier.

The Naviator, Vol. 1, No. 7 (Mar. 27, 1920), Pensacola, Fia., p. 1.

- De Fokker verkeersvliegtuigen van het F. type.

Vliegveld, 5e jaarg., 1921,'Amsterdam, pp. 138-140, 166-167, 353-354, ill.

■- A Fokker raid on London.

Flight, Vol. 12, No. 41 (Oct. 7, 1920), London, pp. 1064-1066, ill.

-—- Fokker single-seater scouts.

Aeronautics, Vol. 18, No. 328 (Jan. 29, 1920), London, p. 107.

- Fokker VI passenger limousine V-45.

Flugsport, 12. Jahrg., Nr. 9 (28. Apr. 1920), Frankfurt a. M., p. 192.

■- A Fokker six-seater limousine monoplane.

Flight, Vol. 12, No. 35 (Aug. 26,1920), London, pp. 931-932, ill.

■- Fokker studying the American situation.

Aviation, Vol. 9, No. 10 (Nov. 22, 1920), New York, p. 325, ill.

- Fokker talks on future war airplanes.

Aircraft Journal, Vol. 6, No. 7 (Feb. 14, 1920), New York, pp. 6,13, ill.

- Investigation of materials and construction of Fokker D-VII fuselage.

Engineering Division Air Service, Technical Orders No. 16 (May 1920), Dayton, Ohio, pp. 67-86, ill.

■- Le monoplan Fokker F. III.

Aéronautique, 3« année, No. 31 (déc. 1921), Paris, p. 492.

- Der neue Fokker FUI-Verkehrseindecker.

111. Flug-Woche, 3. Jahrg., 14. Heft (6. Juli 1921), Leipzig, pp. 271-273, ill.

- Die neue Fokker-Limousine F III.

Flugsport, 13. Jahrg., Nr. 11 (25. Mai 1921), Frankfurt, pp. 230-234, ill.

■- New deal for the monoplane: Fokker's passenger-carrying airplane.

Scient. Amer., Vol. 123 (Dec. 4,1920), New York, p. 569, ill.

■- The new Fokker commercial aeroplane—Type F. III.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 20 (May 18,1921), London, pp. 462-464, ill., diagr.

——- Record of the Fokker European airlines.

Aerial Age, Vol. 14, No. 6 (Oct. 17,1921), New York, p. 136.

- Eeport of static test of Fokker type D-VII chassis.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 29 (Apr. 2, 1920), Washington, Government Printing Office, pp. 7, ill.

- Some Fokker milestone*

Flight, Vol. 12, No. 7 (Feb. 12, 1920), London, pp. 173-176, ill.

- See Couturier,- Hoger: Les avions Fokker.

- See Couturier, Roger: Le monoplan commercial "Fokker F-III."

- See Fromentin, J.: Transports aériens et tourisme.

- See Lémonon, E. H.: Les appareils Fokker d'après-guerre.

Fokker. See Mapes, Bruce A.: Fokker model built by Bruce Mapes. Fokker, Anthony H. G. Certificateti van luchtwaardigheid.

Vliegveld, 5e jaarg., No. 7 (20 Maart 1921), Amsterdam, pp. 101-102.

- The development of commercial aeronautics.

U. S. Air Service, Vol. 4, No. 5 (Deo. 1920), New York, pp. 9-11, ill.

- De zeilvliegtuigenwedstrijden in de Rhön.

Vliegveld, 5» jaarg., No. 18 (27 Aug. 1921), Amsterdam, pp. 256-257; No. 19 (10 Sept.), pp. 268-269; No. 20 (24 Sept.), pp. 280-281.

Fonck, René. Mes combats. "Préface du Maréchal Foch." Paris, E. Flammarion, 1920, pp. 252.

- Die Fortschritte der deutschen Flugzeugtechnik.

Flugsport, 13. Jahrg., Nr. 14 (6. Juli, 1921), Frankfurt, pp. 313-315.

- The proposed air ministry in France.

TJ. S. Air Service, Vol. 4, No. 6 (Jan. 1921), New York, pp. 14-15.

- Le rôle d'un ministère de l'air.

Aéronautique, 2« année, No. 17 (oct. 1920), Paris, pp. 178-180.

Fonseca, E. L. See Honaman, R. K., and E. L. Fonseca: Electrical resistance of various insulating materials at high temperatures.

- See Loeb, L. B., L. G. Sawyer, and E. L. Fonseca: Gas leakage in spark plugs.

- See Silsbee, F. B., and E. L. Fonseca: Measurement of heat energy per spark

of various ignition systems.

- See Silsbee, F. B., L. B. Loeb, and E. L. Fonseca: Method of measuring heat

energy of ignition sparks.

Ford, Henry. Henry Ford and the Navy.

U. S. Air Service, Vol. 3, No. 5 (June, 1920), New York, pp. 26-27, ill.

•- Henry Ford ready. Offers fifteen millions to put the airship in the air.

TJ. S. Air Service, Vol. 3, No. 3 (Apr. 1920), New York, pp. 8-9,16.

■- See Colvin, F. H. : How Ford built Liberty motors.

Foreign. Foreign competition.

The Aeroplane, Vol. 20, No. 7 (Feb. 16,1921), London, p. 150.

Foreign biplane flying model.

Everyday Engineering Magazine, Vol. 9, No. 3 (June 1920), New York, pp. 241, ill.

Forest fire patrol. Airplane patrol for Northwest's forests.

American Lumberman, No. 2328 (Dec. 27,1919), Chicago, p. 45, map.

Forestry. Aerial protection against fires in the great national forests. Paper, Vol. 26 (May 19, 1920), New York, pp. 26-27, ill.

-. Aeroplanes for forest surveys.

Flight, No. 635, Vol. 13, No. 8 (Feb. 24,1921), London, p. 138.

-• Aircraft and forestry.

- The Outlook, Vol. 46, No. 1188 (Nov. 6, 1920), London, p. 470.

- Airplanes and fires. Eight planes covered 16,000,000 acres of national forest

twice a day.

The Naviator, Vol. 1, No. 14 (May 15,1920), Pensacola, Fia., p. 4.

--■ Forest-fire-patrol work.

Aerial Age, Vol. 13, No. 26 (Sept. 5,1921), New York, p. 621. Aviation, Vol. 11, No. 12 (Sept. 19,1921), New York, p. 343, ill.

•- A year of the aerial forest-fire patrol.

Flying, Vol. 10, No. 1 (Feb. 1921), New York, pp. 13-16, ill.

Forestry. See Arnold, H. BL: Aerial forest-fire patrol—1920.

- See Babb, C. Harding: Patrol of Oregon forests by De Havilands during fire

season of 1920.

- See Canada: Canadian Government purchases 10 aeromarine navy flying boats

for forest-patrol work.

- See Canada: The Canadian air board's specifications for exploratory and forest-patrol aircraft.

- See Dirigibles: Dirigibles superior for forest-fire prevention.

- See Hammatt, R. F.: Winged patrols for expansive forests.

- See Hammatt, R. F. : Winged patrols for our expansive forests.

- See Harry, D.: Fire eagles; how army planes and pilots keep check on forest

fires.

- See Moulton, R. H.: Detective aeroplane for discovering forest fires and outlaw

cotton fields.

- See Odenthal, H. J.: Aircraft will save millions annually protecting national

forests from fire.

- See Redington, Paul G. : Airplanes and forest fires.

- See Wilson, Ellwood: The use of aircraft in forestry and logging.

Forests Products Laboratory. The United States Forest Products Laboratory.

Engineer, Vol. 131, No. 3404 (Mar. 25,1921), London, pp. 322, 326-327, ill.

- The work of the Forest Products Laboratory.

Aerial Age, Vol. 14, No. 16 (Dec. 26,1921),New York, p. 374.

Forissier, Auguste. Les regimes lents, en aviation.

Génie Civil, Vol. 76, No. 8 ( 21 févr. 1920), pp. 205-207, figs.

- Les très grandes vitesses en aviation par les moteurs à puissance constante.

Génie Civil, T. 78, No. 15 (9 avril 1921), Paris, p. 138.

Forlanini. See Caro, I.: Aviones que no volaron.

Forson, A. H. A. H. Forson.

The Aeroplane, Vol. 20, No. 21 (May 25,1921), London, p. 476.

Fossey, A. Mathieu de. Le point de vue médical dans la navigation aérienne. Aéronautique, 1> année, No. 12 (mai 1920), Paris, pp. 506-508.

Foster, A. B. My flight with the aerial mail.

The Ace, Vol. 1, No. 12 (July, 1920), Los Angeles, pp. 13, 22, 29, ill.

Foster, R. L. Army balloon service offers opportunities.

Aerial Age, Vol. 12, No. 10 (Nov. 15, 1920), New York, p. 273, ill.

Fourcault, L. D. Manuel élémentaire du mécanicien d'aviation.

Paris, Dunod, 1920, pp. vi, 128, ill.

4L-200. See Waterman: The Waterman type 4L-200 four-place airplane.

Fournier, Lucien. Comment voyagent nos dépèches. Paris, Bonne Press, 1 vol., 108 p., 94 ill. L'Aérophile, 28 année, Nos. 5/6 (1"-15 mars. 1920), Paris, p. 77.

- L'œuvre du Laboratoire Aérodynamique Eiffel pendant la guerre.

L'Aérophile, 28 année, Nos. 3/4 (1"-15 févr. 1920), Paris, p. 53.

Fowler, Harlan D. Means for improving airplane performance.

Aviation, Vol. 11, No. 23 (Dec. 5,1921), New York, pp. 652-655, diagr.

152

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Aeronautics, Vol. 19, No. 351 (July 8, 1920), London, p. 39.

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Aviation, Vol. 10, No. 13 (Mar. 28, 1921), New York, pp. 392-393.

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Aviation, Vol. 11, No. 23 (Dec. 5,1921), New York, p. 655. Aeronautics. VoL 20, n. s., No. 386 (Mar. 10,1921), London, p. 161.

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Flight, No. 633, Vol. 13, No. 11 (Mar. 17,1921), London, p. 190.

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Aeronautics, Vol. 21, n. s., No. 404 (July 14, 1921), London, p. 35.

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Flight, No. 658, Vol. 13, No. 31 (Aug. 4,1921), London, p. 527.

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Aerial Age, Vol. 12, No. 25 (Feo. 28, 1921), New York, p. 640.

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• Aviation, Vol. 10, No. 12 (Mar. 21,1921), New York, p. 364.

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Flight, Vol. 13, No. 26, No. 653 (June 30, 1921), London, p. 432.

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Aerial Age, Vol. 12, No. IS (Jan. 10, 1921), New York, p. 472.

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Aerial Age, Vol. 13, No. 18 (July 11, 1921), New York, p. 411.

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Aviation, Vol. 10, No. 20 (May 16, 1921), New York, pp. 638-039, map.

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Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 14 (Apr. 6, 1921), London, pp. 325-32\.

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«, Aviation, Vol. 7, No. 11 (Jan. 1, 1920), New York, p. 490.

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Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 7 (Aug. 17, 1921), London, p. 150.

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Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 3 (Jan. 19, 1921), London, p. OS.

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Flight, No. 670, Vol. 13, No. 43 (Oct. 27, 1921), London, p. 701.

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Aviation, Vol. 10, No. 15 (Apr. 11, 1921), New York, p. -169.

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Aviation, Vol. 11, No. 2 (July 11, 1921), New York, p. 4S.

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Aerial Age, Vol. 13, No. 10 (May 16, 1921), New York, p. 219.

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Flight, Vol. 12, No. 4S (Nov. 25, 1920), London, p. 1212.

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L'Aérophile, 29 année, Nos. 1-2 (l«r-lj janv. 1921), Paris, p. 22.

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Aerial Age, Vol. 13, No. 16 (June 27, 1921), New York, pp. 365, 367-36S.

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dépendent . . .

L'Aérophile," Nos. 19-20 (août 1920), Paris, pp. 289-290.

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1920 by the French Government.

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44439—25-11

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Flight, Vol. 12, No. 47 (Nov. 18,1920), London, p. 1191.

—— Some French civil flying figures.

Aerial Age, Vol. 13, No. .5 (Apr. 11,1921), New York, p. 112.

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- See Commercial aeronautics: Commercial service between France and Morocco- See Engines: The French competition for peace-time aero engines.

--- SeeFonck, René: The proposed air ministry in France.

- See Gouault, E.: L'état actuel de l'aéronautique en France.

---- See Grey, G. C. : French and Italian hydro-aeroplanes at Monaco.

---- See Hangars: French airship sheds built of framed concrete.

- See International Air Navigation Congress: France to organise first International Air Navigation Congress.

See Knight, Wm. : Italian and French experiments on wind tunnels.

--See Margoulis, W. : Notes on spécifications for French airplane competitions.

- See Mills, C. H. : French military aviation criticized.

- See Routes, Air: Les grandes routes de l'air.

- See Sacconey: Commission de navigation aérienne.

- See Soreau, Rodolphe: Travaux de la commission technique.

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Frankfurter Flugmodell-Verein.

Flugsport, 12. Jahrg., Nr. 9 (28. Apr. 1920), Frankfurt a. M., p. 20ß.

Frantzen, L. P. Les ballons captifs. Le ballon captif militaire italien type Avorio-Prassone (1918).

L'Aérophile, 29 année, Nos. 2-3 (1«'-15 févr. 1921), Paris, pp. xyii-xviii, ill.

- Les ballons captifs maritimes pendant la guerre.

La Conq. l'Air, 3« année, No. 2 (le' févr. 1920), Bruxelles, pp. 32-34, ill.

- Deux belles descentes en parachute A. Robert.

L'Aérophile, 28 année, Nos. 21-22 (1«-15 nov. 1920), Paris, pp. 341-342, ill.

- Experiences d'aérodynamique pratique.

La Conq. l'Air, 3« année, No. 1 (1«'janv. 1920), Bruxelles, pp. 14-15, ill.

- Les Cerfs-Volants Porte-Amarres.

L'Aérophile, 28 année, Nos. 7-8 (1"-15 avril 1920), Paris, pp. 123-124, ill.

- Les hydravions Borel.

La Conq. l'Air, 3« année, No. 5 (1« mars 1920), Bruxelles, pp. 49-51.

- Les parachutes américains. Le parachute d'aviation Floyd Smith.

L'Aérophilo, 29 année, Nos. 7-8 (l<*r-15 avril 1921), Pans, pp. xviiï-xix, ill.

Frantzen, L. P. Les parachutes d'avions.

L'Aérophile, 28 année, Nos. 21-22 (1«-15 nov. 1920), Paris, p. 352.

- Les parachutes d'avions. A l'école de parachutes Jean Ors.

L'Aérophile, 29 année, Nos. 2-3 (l«-15févr. 1921), Paris, pp. xix-xx, ill.

--À propos de la sécurité aérienne.

La Conq. l'Air, 3e année, No. 5 (1" mars 1920), Bruxelles, pp. 57-58.

- La sécurité par le parachute. L'école de parachutistes d'avion de Jean Ors.

L'Aérophile, 29 année, Nos. 1-2 (l»'-15janv. 1921), Paris, p. 29.

- Snelle vliegtuigen.

A via, Se jaarg., No. 0 (15 Feb. 1920), Rotterdam, pp. 70-71.

- De vliegtuig-parachute Yalere-Lecomte.

Avia, 8e jaarg., No. 7 (15 Mei 1920), Rotterdam, pp. 82-S3.

Frazer, R. A., and L. F. G. Simmons. Note on the mooring of airships by "free" wire systems

Aëron. Journ., Vol. 25, No. 122 (Feb. 1921), London, pp. 91-99, ill.

- Tests on struts suitable for the fairing of duplicate cables.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 1, London, 1921, pp. 263-208, diagr.

Frazer, IX. A. See Nayler, ,T. L., and R. A. Frazer: Vortex motion, (i) Preliminary report upon an experimental method of investigating, by the aid of kinematograph photography, the history of eddying flow past a model immersed in water.

- See Simmons, L. F. G., and R. A. Frazer: An investigation to determine the

best shape of fairing for a circular cylinder. Part 2.

- See Simmons, L. F. G., and It. A. Frazer: Model tests on bodies proposed for

use as kite balloons.

Franz, Zeno Diemer. Männer der Luftfahrt—IX: Oberleutnant Franz Zeno Diemer.

Flugwelt, 2. Jahrg., 16. Heft (4. Aug. 1920), Leipzig, pp. 424-425.

Fréchet, Charles. L'avion-torpilleur.

Aéronautique, 3« année, No. 23 (avril 1921), Paris, pp. 169-173, ill.

Free ballooning. Free ballooning over Texas.

Aircraft Journal, Vol. 6, No. 14 (Apr. 3,1920), New York, p. 10.

Free flight. Sec Warner, E. P., and F. II. Norton: Preliminary report on free flight tests.

Free wire systems. See Frazer, It. A., and L. F. G. Simmons: Note on the mooring of airships by "free" wire systems.

French Guiana. In French Guiana.

Aerial Age, Vol. 13, No. IS (July 11,1921), New York, p. 424.

Frenzel, Walter. Die Gasdurchlässigkeit von gummierten Ballonstoffen. Chemiker Zeitung, Vol. 43, No. lOO (Aug. 19, 1919), pp. 530-532, figs.

Frictie. De ophefiing van het illusiaansche vliegregiment.

Vliegveld, 5e jaarg., No. 2 (15 Jan. 1921), Amsterdam, pp. 26-29. ill.

Friedensburo, Walter. Albatros gegen U-Boot.

111. Flug-Woche, 3. Jahrg., 4. Heft (16. Feb. 1921), Leipzig, pp. 62-65. ill.

- The distant compass.

Aerial Age, Vol. 13. No. 2) (Aug. 29, 1921), New York, pp. 587-589, diagr.

- Der Fernkompass.

Reviewed in: Zeitsclir. Fingt. Motorluftsrii., 11. Jahrg., lied 15 (14. Aug. 19201, Berlin, pp. 217-220, ill.

Friedrichshafen. Im Friedrichshafen—Grossflugzeug über den Rhein. Flugwelt, 2. Jahrg., 7. Heft (31. März 1920), Leipzig, pp. 200-202, ill.

Frier, J. D. S.ee Jones, T. H., and J. D. Frier: Aeroplane structural design.

Friesley. The Friesley Falcon.

Aerial Age, Vol. 13, No. 10 (May 16,1921), New York, pp. 225-226, ill.

-• The Friesley Falcon cabin airplane.

Aviation, Vol. 10, No. 21 (May 23,1921), New York, pp. 655-657, ill.

Frintrop, Erich. Nachtluftjagd.

Luftweg, Jahrg. 4, Heft 44-45 (IS. Nov. 1920), Berlin, pp. 1-1, ill.

Fritz, John". -See Wright, Orville: Presentation of John Fritz medal to Orville Wright.

- See Wright, Orville: Orville Wright awarded the John Fritz medal.

Fromentin, J. Les avions commerciaux aux États-Unis.

Vie Aérienne, No. ISS (17 juin 1920), Paris, pp. 1190-1191.

- Les avions commerciaux Bristol.

Vie Aérienne, No. 16S (29 janv. 1920), Paris, pp. 935-936, ill.

- Les avions commerciaux Farman.

Vie Aérienne, No. 174 (11 mars 1920), Paris, pp. 1032-1033, ill.

- Les avions Curtiss.

Vie Aérienne, No. 182 (6 mai 1920), Paris, pp. 1144-1145, ill.

- Avions de tourisme.

Vie Aérienne, No. 169 (5 févr. 1920), Paris, pp. 952-953, ill.

- Les avions Spad.

Vie Aérienne, No. — (- 1920), Paris, pp. 1004-1085,1080-10S1, 1097-1098, ill.

- Les avions métalliques.

Vie Aérienne, No. 179 (15 avril 1920), Paris, pp. 1114-1116, ill.

- Biplan autrichien W. K. F.

Vie Aérienne, No. 179 (15 avril 1920), Paris, pp. 1110-1111, ill.

- Hydravions de transport et de tourisme.

Vie Aérienne, No. ISO (22 avril 1920), Paris, pp. 1128-1129, ill.

- Les héros disparus: l'enseigne Georges Leray.

Vie Aérienne, No. ISO (22 avril 1920), Paris, p. 1130, port.

- Inventions.

Vie Aérienne, No. 170 (12 févr. 1920), Paris, pp. 969-970, ill; No. 173 (4 mars 1920), pp. 10161017, ill.

- Inventions: La Handley-Page limited.

Vie Aérienne, No. 164 (1« janv. 1920), Paris, pp. 854-855, il!.

- Les moteurs d'aviation.

Vie Aérienne, No. 167 (22 janv. 1920), Paris, pp. 920-921, ill.

- Quelques notes sur les avions Vickers.

Vie Aérienne, No. 171 (19 févr. 1920), Paris, pp. 9S5-9S6; No. 172 (26 févr.), pp. 1000-1001, ill.

- Quelques réflexions sur le salon.

Vie Aérienne, No. 166 (15 janv. 1920), Paris, pp. 903-905, ill.

- Transports aériens et tourisme.

Vie Aérienne, No. 187 (10 juin 1920), Paris, pp. 11S6-11S7, ill.

Froude, William. See Heenan-Froude: The Heenan-Froude dynamometer.

Fuchs, A. La constitution et l'enduisage des voilures d'avions. Chimie et Industrie, T. 3 (févr. 1920), Paris, pp. 167-172.

Fuel. Benzol as an engine fuel.

Aircraft Journal, Vol. 6, No. 11 (Mar. 13,1920), New York, p. 15.

- Benzole as a fuel for aircraft engines.

Automobile Engineer, Vol. 9, No. 133 (Dec. 1919), pp. 446-448, figs.

- Bureau of Standards tests of various gasolines and benzol mixtures.

Mechanical Engineer, Ysl. 42 (Mar. 1920), New York, pp. 173-174.

- Comparative value of filtering mediums from gasoline.

Aerial Age, Vol. 13, No. 12 (May 30,1921), New York, p. 270.

- Comparison of hecter fuel with export aviation gasoline.

Jovrrn. Soc. Automotive Engineers, Vol. 7 (July 1920), New York, pp. 110-111. Automotive Industries, Vol. 42 (June 10,1920), New York, pp. 1336-1337. Aviation, Vol. 9 (Aug. 15, 1920), New York, pp. 62-63.

- Engine fuels.

Aircraft Journal, Vol. 6, No. 13 (Mar. 27, 1920), New York, p. 7.

- Hecter fuel compared with export aviation gasoline.

Aviation, Vol. 9. No. 2 (Aug. 15, 1920), New York, pp. 62-63, chart.

- Hydrogen in airship engines.

Aero. Eng. Suppl. The Aeroplane, Vol. IS, No. 7 (Feb. 18, 1920), London, p. 362.

- Instructions to pilots for the use of mixture controls.

Aerial Age, Vol. 13, No. 23 (Aug. 15, 1921), New York, pp. 541-542.

- A new engine fuel.

Aeronautics, Vol. 20, u. s., No. 398 (June 2,1921), London, p. 391.

- Partial test of an alcohol fuel.

Aircraft Journal, Vol. 6, No. 12 (Mai. 20, 1920), New York, p. IS.

--The problem of fuel for aviatien engines.

Aerial Age, Vol. 14, No. 1 (Sept. 12,1921), New York, pp. s-11, 22-23, diagr.

- Synthetic alcohol.

Aerial Age, Vol. 13, No. 13 (June 6, 1921), New York, p. 302.

- See Alcogas: Alcogas as aviation fuel compared with export-grade gasoline.

- See Casing head: Casing-head gasoline impossible for altitude work.

- See Dean, E. W., and Clarence Netzen: An investigation of airplane fuels.

- See Dickinson, Hobert Cutler, V. R. Gage, and S. W. Sparrow: Comparison

of hecter fuel with export aviation gasoline.

- See Dickinson, Hobert Cutler, W. S. James, E. W. Roberts, V. 11. Gage, and D. R. Harper, 3d: Power characteristics of aviation gasoline.

•--• See Gage, V. T., S. W. Sparrow, and D. R. Harper: Comparison of alcogas aviation fuel with petrol.

- See Gage, V. R., S. W. Sparrow, and D. R. Harper, 3d: Comparison of alcogas

aviation fuel with export aviation gasoliue.

- See Gage, V. R., S. W. Sparrow, and D. R. Harper: Comparative power properties of alcogas and aviation gasoline.

- See Hecter: A comparison of hecter fuel with export aviation gasoline.

- See Hexahydrobenzene: Hexahydrobenzene as a fuel.

- See Paris, Auguste Jean, jr., and \V. Francklyn Paris: A new process for the

production of aircraft-engine fuels.

- See Parish, W. F.: Proper balancing of fuel, lubricant, and motor.

- See Roberts, E. W.: Power characteristics of Sumatra and Borneo gasolines.

158

HI RI.T l >lî H AIM l Y Of AERONAUTICS, 1920-1921.

Fuel. See Roberts, Ii. W.: Power characteristics of 20 per cent benzol mixture. Fuel feed. See Lent, L. 73.: Fuel-feed systems for airplanes.

- See LePere: LePere vacuum-feed system for airplanes.

fuEi.izER. See Packard: The Packard fuelizer.

i'u.n-I-Go. A Japauese two-seater.

Aer. Eng. Sappl. The Aoroplnne, Vol. 19, No. 20 (Dec. 29, 1920), London, p. 900, <iiu.gr.

Fulcher, G. S. Electrostatic effects on airships.

Scient. Amer. Snppl., Vol. SS (Dec. 13, 1919), New York, pp. 318-319.

Fuld, E. Amsterdam-Leuwarden.

Yliegveld, 5« jaarg., No. IS (27 Aug. 1921), Amsterdam, pp. 257-258.

- lie K. L. M.

Yliegveld, 5» jaarg., No. 24 (20 Nov. 1921), Amsterdam, pp. 325-326.

--Een druppel in de groote zee!

Vliegveld, 4« jaarg., No. 21 (9 Oct. 1920), 's-Graveuhage, pp. 355-357, ill.

---Eenige harde woorden.

Vliegveld, 5= jaarg., No. 10 (7 Mei 1921), Amsterdam, pp. 137-138.

-■ Gebruikt de luchtdiensten steunt onze nationale aviatiek.

Vliegveld, 5= jaarg., No. 7 (26 Maart 1921), Amsterdam, pp. 103-104.

- Het K. L. M.-subsidie en de tweede kamer.

Vliegveld, 5« jaarg., No. 25 (10 Dec. 1921), Amsterdam, pp. 338-339.

----- Naar aanleiding van de begrooting.

Vliegveld, 5» jaarg., 1921, Amsterdam, p. 274.

---- Yoorbereidende propaganda voor 1922.

Vliegveld, 5= jaarg., No. 26 (24 Dee. 1921), Amsterdam, p. 352.

------ Szintilla.

Yliegveld, 5« jaarg., No. 2 (15 Jan. 1921), Amsterdam, pp. 29-30, ill.

Fullam, W. F. Admiral Fullam on the Alabama tests.

Aerial Age, Vol. 14, No. 6 (Oct. 17,1921), New York, p. 130.

Fullerton, J. D. Pioneers of British aviation—XXX. Col. J. D. Fullerton, R. B. Aeronautics, Vol. IS, No. 331 (let). 19,1920), London, pp. 158-159, ill.

Funck, Georges. Power-recuperating engines; principles of operation and design of valve gear.

Mechanical Engineer, Vol. 12 (June, 1920), New York, pp. 354-355, diagr. Scient. Amer. Monthly, Vol. 1 (June, 1920), New Y"ork, pp. 568-569.

- The supercharging of internal-combustion engines—III.

Aut. Eng., Vol. 9, No. 133 (Dec. 1919), pp. 421-423, tigs.

Funk. Das Flugf ülirerbuch.

Luitweg, Nr. 14-15 (22. April 1920), Berlin, p. 5.

Fuselage. A boat-built fuselage.

Aer. Eng. Suppl. The Aoroplane, Vol. 20, No. 12 (Mar. 23, 1921), London, p. 278, ill. •

—— Breguet commercial airplane.

Aut. Ind., Vol. 43 (Sept. 2,1920), New York, p. 475, diagr.

---- Stubby fuselage is feature of surprising airplane.

Pop. Mec, Vol.34 (July, 1920), Chicago, pp. 55-56, ill.

- See Elmdorf, Armin: The design of inonocotjue fuselages.

- See Warner, Edward P., and Roy G. Miller: Fuselage stress analysis.

— See Powell, 0. H.: Air resistance of a model aeroplane fuselage.

BIBLJOGRAPH V OF AEBOXAUTICS, 1030-1921.

159

fi.

G. A. X. The U. S. "G. A. X." ground attack triplane.

Flight, No. 644, Vol. 13, No. 17 (April 28, 1921), London, pp. 294-295, ill.

G., 0. G. Aerial dispatches and terrestrial delays.

The Aeroplane, Vol. 18, No. 1 (Jan. 7, 1920), London, pp. 8,10.

- The failure of civil aviation.

The Aeroplane, Vol. 19, No. 25 (Doc. 22,1920), London, p. 926.

- On air lines.

The Aeroplane, Vol. 19 Nos. 24-25 (Dec. 15-22, 1920), London, pp. 899-900, 926-926.

- On air posts.

The Aeroplane,, Vol. 19, No. 5 (Aug. 1, 1920), Loudon, pp. 279-281; No. 10 (Sept. S), pp. 471-473.

- On safety, comfort, and economy.

The Aeroplane, vol. 19, No. 7 (Aug. 18, 1920), London, pp. 355-360.

- On small racing machines. A sporting suggestion.

The Aeroplane, Vol. 18, No. 9 (Mar. 3, 1920), London, pp. 451-452.

- On our imperial air routes.

The Aeroplane, Vol. 18, No. 7 (Feb. 1% 1920), London, pp. 347-354.

- On the aerial derby.

The Aeroplane, Vol. 19, Nos. 3-4 (July 21-28,1920), London, pp. 175-177,239-246,265-260, map.

- On the aero show.

The Aeroplane, Vol. 19, No. 2 (July 14, 1920). London, pp. SI-86A.

- On the air estimates.

The Aeroplane, Vol. IS, Nos. 11-12 (Mar. 17-24, 1920), Loudon, pp. 55«-«!, 005-612.

- On the Air Ministry and the aircraft industry.

The Aeroplane, Vol. 18, No. 16 (Apr. 21, 1920), London, pp. S00-S02.

- On the amphibian competition.

The Aeroplane, Vol. 19, No. 9 (Sept. 1, 1920), London, pp. 435-H0; No. 12 (Sept. 22), pp. 543-546.

- On the coming of civil aerial transport.

The Aeroplane, Vol. 18, Nos. 23-25 (Juno 9-Jime 23, 1920), Loudon, pp. 1111-1112, 1155-1157, 1199-1202.

- On the lesson and the future.

The Aeroplane, Vol. 18, Nos. 15-17 (Apr. 14-28, 1920), London, pp. 751-751, 799-801, 817-819.

- On the Monaco meeting.

The Aeroplane, Vol. 18, Nos. 17-19 (Apr. 2S-May 12, 1920), London, pp. 819-851, 895-902, 912,111.

--On the Navy's way with the R. A. F.

The Aeroplane, Vol. 19, No. 2 (July It, 1920), London, pp. 8613-88.

- On the needs of civil aviation.

The Aeroplane, Vol. 19, Nos. 15-21 (Oct. 13-Nov. 21, 1920), London, pp. 635-630, 067-670, 685086, 722-724, 751-752, 783-784, Sll-812.

- On the R. A. F.'s first war.

The Aeroplane, Vol. 18, No. 8 (Fob. 25, 1920), London, pp. 390-100.

On the R. A.. F. tournament.

The Aeroplane, Vol. 19, No. 1 (July 7, 1920), London, pp. 5-10.

- On the sport of flying.

The Aeroplane, Vol. IS, No. 5 (Feb. I, 1920), London, pp. 239-240.

- On who's who in America.

The Aeroplane, Vol. 19, No. 13 (Sept. 29, 1920), London, pp. 575-577.

G., K. Discussion des résultats du meeting de Monaco.

Aéronautique, 2' onnéo. No. 13 (juin 1020), Paris, pp. 22-23, ill.

G-FAAF. See Upson, Ralph H.: The British passenger airship G-FAAF.

G., R. T. The air conference, 1920.

Nature, Vol. 106, No. 2000 (Oct. 21, 1920), London, pp. 258-200.

G., S. D. Random reflections of the pageant.

The Aeroplane, Vol. 21, No. 1 July 6,1921), London, pp. 17-18.

Gage, Victor R., S. W. Sparrow, and D. R. Harper. Comparison of alcogas aviation fuel with export aviation gasoline.

National Advisory Committee for Aeronautics, Report No. 89, Washington, Government Printing Office, 1920, pp. 14, charts.

- Comparison of alcogas aviation fuel with petrol.

Aeronautics, Vol. 18. No. 344 (May 20, 1920), London, pp. 402-405.

- Comparative power properties of alcogas and aviation gasoline.

Aut. Ind., Vol. 42 (Apr. 29, 1920), New York, pp. 1018-1020.

Journ. Soc. Automotive Engineers, Vol. 6 (June, 1920), Now York, pp. 397-401.

Gage, Victor R. Some factors of airplane-engine performance.

National Advisory Committee for Aeronautics, Report No. 108, Washington, Government Printing Office, 1921, pp. 29, ill.

- Some factors of engine performance.

Journ. Soc. Automotive Engineers, Vol. 6, No. 6 (June, 1920), New York, pp. 402-40S, charts.

- A study of airplane engine tests.

National Advisory Committee for Aeronautics, Report Xo. 40, Washington, Government Printing Office, 1920, pp. 39.

- See Dickinson, H. C, V. R. Gage, and S. W. Sparrow: Comparison of hecter

fuel with export aviation gasoline.

- See Dickinson, H. C, W. S. James, E. W. Roberts, V. R. Gage, and D. R.

Harper, 3d: Power characteristics of aviation gasolines.

- See Upton, G. B., and Y. R. Gage: Investigation of the muffling problem for

airplane engines.

Gaines, C. Planting grain fields by airplane.

Pop. Mech., Vol. 34 (Nov. 1920), Chicago, pp. 650-652, ill.

Gallauoet, The Gallaudet C-3 Liberty tourist plane.

Aerial Age, Vol. 11, No. 23 (Aug. 16, 1920), New York, p. 771, ill.

--Gallaudet electric heat-treating furnace.

Aviation, Vol. 11, No. 16 (Oct. 17,1921), New York, pp. 457-458, ill.

—— Gallaudet liberty tourist tested.

Aircraft Journal, Vol. 7, No. 9 (Aug. 30, 1920), New York, p. 14, ill.

-' The Gallaudet multiple drive.

Flight, No. 672, Vol. 13, No. 45 (Nov. 10, 1921), London, p. 742.

- Gallaudet multiple drive tested.

Aviation, Vol. 11, No. 10 (Sept. 5, 1921), New York, p. 279, ill.

Galliot, Norbert. Un problème d'aérodynamique.

Vie Aérienne, No. 171 (19 févr. 1920), Paris, pp. 982-983, ill.

- L'empoignade aérienne.

Vie Aérienne, No. 194 (29 juil. 1920), Paris, p. 1241, ill.

Gallop, E. G. See Fowler, R. H., E. G. Gallop, C. N. H. Lock, and H. W. Richmond: The aerodynamics of a spinning shell.

Galveston. Navy airplane base at Galveston.

Auto. Ind., Vol. 39, No. 11 (Sept. 12,191S), Chicago, pp. 475.

Garavaglia, Benjamin. See Naef, Ernest: Benjamin Garavaglia parachutiste.

Gardner, H. A. Aircraft technical note on dopes and fabrics.

Automotive Manufacturer, Vol. 62, No. 3 (June 1920), New York, p. 21.

- Glues and veneers in aircraft work.

Automotive Manufacturer, Vol. 62, No. 1 (Apr. 1920), New York, p. 25.

—- Notes on fabric and dope.

Aircraft Technical Note No. 178, Department of the Navy, Bureau of Construction and Repair, "Washington (Apr. 21,1920), pp. 2.

—— Prevention of dope poisoning.

Aircraft Technical Note, Bureau of Construction and Repair, Navy Dept., Aviation, Vol. S, No. 5 (Apr. 1, 1920), New York, p. 202.

- Tests on rigid outer cover cloth.

Aircraft Technical Note No. 183, Department of the Navy, Bureau of Construction and Repair, 'Washington (July 12, 1920), pp. 7, ill.

- Waterproof finishes for aircraft.

Automotive Manufacturer, Vol. 62, No. 2 (May 1920), New York, p. 26.

Garner, H. M., and Arthur Berry. On the torsion of a fuselage.

Tech. Rcpt. Advis. Com. Aeronautics, 1917-1S, Vol. 3, London, 1921, pp. 891-909, ill.

Garuffa, E. Les dirigeables à "raréfaction." Brevets Vaugean-Garguilo. Le système Vaugean à raréfaction variable de l'ingénieur-prof. E. Garuffa. L'Aérophile, 29 année, Nos. 23-24 (1"-15 déc. 1921), Paris, pp. xvii-xviii, ill.

Gas. Experiments in apparatus for handling gas.

Aerial Age, Vol. 12, No. 18 (Jan. 10,1921), New York, p. 471.

Gas manual, balloon. See United States Air Service. War Department: . . . Airship and balloon gas manual . . .

Gas turbines. See Norman, C. A.: Possibilities of an aeronautical gas turbine.

- See Page, A. J.: Gas turbines.

Gas valve. See Maranville, A. G.: The Goodyear automatic gas valve.

Gases. See David, W. T.: The internal energy of inflammable mixtures of coal gas and air after explosion.

- See David, W. T.: Radiation of explosions of hydrogen and air.

-- See Helium: Government seeks to locate gas containing helium.

- See Helium: Helium in the British Empire.

- See Hydrogen: Apparatus for making and handling hydrogen.

- See Ledig, P. G.: Inflammability of jets of hydrogen and inert gas.

- See Schuette, O. F.: Bureau of Mines report on helium.

--- See Schuette, O. F.: Great natural-gas industry.

---See Teed, P. L. : The lift of hydrogen.

- See Upson. R. H.: Maintenance of gas purity by purging.

- See V., R.: L'hélium.

Gasnier du Fresne, P. A propos des services des dirigeables de marine pendant la guerre.

L'Aérophile, 2S année, Nos. 5/6 (1"-15 mars 1920), Paris, p. 79.

162 UJBLIUUKAPH V OF AERONAUTICS, 1020-1921.

Gasoline. Comparative test of special homogeneous gasoline and commercial aeronautic gasoline.

Air Service Information Circular (Ileavier-llnin-air), Vol. 1, No. 35 (May S, 1920), Washing-Ion, Government Printing Office, pp. 4.

■---Dopes for gasoline.

Aviation, Vol. 10, No. 2 (Jan. 10, 1921), New York, p. 53.

- Inflammability of gasoline.

Automotive Manufacturer, Vol. 02, No. 4 (July 1920), New York, p. 36.

— Test of various types of gasoline hose connections. (Power plants report No. 75.)

Air Service Information Circular (Ueavier-lhan-air), Vol. i, No. 13 (Mar. 25, 1920), Washington, Government Printing office, pp. 7, diagr.

- Tests of synthetic gasoline.

Avialion, Vol. 7, No. 11 (Jan. 1, 1920), New York, p. 479.

- See Alcogas: Alcogas as aviation fuel compared with export-grade gasoline.

-■ See Dicldnson, H. 0., V. Pv. Gage, and S. W. Sparrow: Comparison of hecter fuel

with export aviation gasoline.

■-■ See Dickinson, H. C, W. S. James, E. W. Roberta, V. R. Gage, and D. R.

Harper, 3d: Power characteristics of aviation gasolines.

- See Fuel.

- See Gage, V. R., S. W. Sparrow, and D. R. Harper, 3d: Comparison of alcogas

aviation fuel with export aviation gasoline.

- See Hecter: A comparison of hecter fuel with export aviation gasoline.

- See Imber: The Imber self-sealing gasoline tank.

- See Roberts, E. ~\Y.: Tower characteristics of Sumatra and Borneo gasoline.

Gasoline tank. See Gose, John: A fire prevention device.

Gastambide. See Blanchet, Georges: Un eclatantsucces pour la technique francaise. Gastambide-Latham. See Wings: Another new wing.

G.\stambide-Levavasseuh. The Gastambide-Levavasseur variable surface wing.

Acr. Eng. Suppl. The Aeroplane, Vol. 19, No. 26 (Dee. 29, 1920), London, pp. 955-956, diagr.

- Verstellt!ügel des Gastambide-Levavasseur-Doppeldeckers.

111. Flug-YVoche, 3. Jahrg., 13. Heft (22. Juni 1921), Leipzig, pp. 215-218, ill.

- See Carrying surface: Die verstellbare Tragfläche.

Gates, S. B.: The full-scale determination of the pitching moment of a biplane.

Tech. Hep. Adviso. Com. Aeronautics 1917-18, Vol. 2, London, 1921, pp. 657-689. diagr.

— See Glauert, II., and S. 13. Gates: Prediction of the performance and longitudinal stability of an aeroplane, including the estimation of the effect of small changes in the design. •

- See Sandisou, (j. G. 1)., and S. B. Gate«: Forces, moments, and interferences on wings and body of a ^ scale model of B. E. 2E with R. A. F. 15 wing section.

Gaubeut, Louis. Impressions of an aerial tour in America.

Aerial Age, Vol. 11, No. 15 (June 21, 1920), New York, p. 508, ill.

Gaule, IC. G.: Der Einfluss der wissenschaftlichen Forschung auf die Konstruktion der Flugzeuge.

Zeitschr. Flugt. Motorluftscli, 12. Jahrg., 1921, München, pp. 53-äS, 73-7), SS-90, 102-106, 133-137.

Gaulois, G.: Air bags for the airplane that lands on water.

Soient. Amer., Vol. 122 (May 1, 1920), New York, p. 489, ill.

— Cranking airplane propellers with a flask of air.

Scient. Amer., Vol. 122 (Apr. 17, 1920), New York, p. 425, ill.

---- Man-sized helicopter that leaves the ground with full load.

Scient. Amer., Vol. 122 (Mar. 27, 1920), New York, p. 331, ill.

- What about our commercial aviation?

Scient. Amor., Vol. 112 (Feb. 2s, 1920), New York, p. 215, ill.

Gazda, Anton. Gleit/liegen and Klein flugzeng.

Flug. Sondernummer (Dez. 1920), Wien, pp. S6-SS.

Gazetteer. French aeronautical gazetteer.

Flight, No. 653. Vol. 13, No. 26 (June 30, 1921). London, p. 441.

Geary. A mercantile air fleet as a factor in Indian defense. Journal of the United Service Institution ot India.

Geddes, A. E. M. Meteorology.

London, Blackle aud Son (Ltd.), 1921, pp. 390.

Reviewed in: Aëron. Journ., Vol. 25, No. 130 (Oct. 1921), London, p. .559.

Gehlhoff, Georg. Scheinwerfer für Flugzeuge und ihre Bedeutung für den Nachtflug.

Luftweg, Jabry. 4, Hefte 46-47 (2. Dez. 1920), Berlin, pp. 1-4.

Gemer, Harold. What is the future of the large dirigible?

U. S. Air Service, Vol. 3, No. 2 (Mar., 1920), New York,pp. 8-U, ‘11.

Generators. 6'ee Gray, G. F., j. W. Heed, and P. N. Elderkin: Air fans for driving generators on airplanes.

- See Hull, Lewis M.: Determina lion of the output characteristics of electron tube

generators.

Geneva. Les travaux de la conférence de Genève.

Suisse Aérienne, 2e année, No. 19 (20 oct. 1920), Berne, pp. 2S7-2X*.

---- See Perrin, Harold E. : Federation Aéronautique Internationale. Notes on the

Geneva conference.

------- See Perrin. Harold £.: Fédération Aéronautique Internationale. A few notes

on the Geneva conference of September 8, 9, and 10, 1920.

Geoiiqb Pa un all amd Co. See Great Britain: Modern British aircraft.

G Kuhardt, Y\". F., li. E. Boct.ton, and L. V. Kerber. Preliminary choice of a wing section.

Aerial Age, Vol. U, No. 25 (Aug. 30, 1920), New York, pp. S39-XI1.

G Kuhardt, AV. Y. The resistance of aerofoils.

Aerial Age, Vol. 13, Nos. 7-K (Apr. 25-Jtay 2, 192! ), New York, pp. 1.32-151; 17.V-17S.

--Technical discussion of helicopter progress. Au im portant forward step in

aerial transportation may soon be made.

U. S. Air Service. Vol. 6, No. 5 (Dec, 1921), New York, pp. 17-20, eontd.

--See Kerber, L. V., and W. F. Gerhardt: A method for determining the angular

setting of a tail plane to give balance at any given condition.

Gkrhaxy. Aeronautics in German universities.

Aerial Aite Vol. 13. No. 23 Aug. 15. 1921). New York. p. 5:Vi

Germany. Aid is refused to German airplane.

The Xaviator, Vol. 1, No. 9 (Apr. .10, 1920), Pensacola, Fia., pp. 1, 2.

--America and German aircraft.

Aerial Age, Vol. 12, No. 17 (Jan. 3, 1921), New York, p. 433.

- Aneroid investigations in Germany.

Technical Notes, National Advisory Committee for Aeronautics, No. 72 (Oct. 1921), Washington (mira.), pp. 9.

- Aviation in Germany.

Aeronautics, Vol. 19, No. 375 (Dec. 23, 1920), London, p. 449; Flight, Vol. 12, No. 27 (July 1, 1920), London, pp. US3-6S4.

- British flying rights in Germany.

Aeronautics, Vol. 18, No. 34« (June 3, 1920), London, p. 431.

- Commercial air transport in Germany.

Aer. Bug. Suppl. The Aeroplane, Vol. 21, No. S (Aug. 24, 1921), London, pp. 173-17!, map.

- Commercial aviation in Germany.

Aerial Age, Vol. 12, No. 17 (Jan. 3, 1921), New York, p. 440. Flight, Vol. 12, No. 45 (Nov. 4, 1920), London, p. 1162.

- Communiqués de l'office aérien fédéral: Luftverkehr nach Deutschlaad.

Suisse Aérienne, 2= année, No. 12 (25 juin 1920), Berne, pp. 175-176.

■-■ Design and structure of the German metal airplane.

Aut. Ind., Vol. 42 (June 10, 1920), New York, pp. 1360-1362, diagr.

- Development of giant aircraft in Germany.

Aei'on. Journ., Vol. 25, Nos. 122, 123 (Feb.-Mar. 1921), Loudon, pp. 100-110, UHi-iss, ill.

- Die deutsche Luftsportkommission und ihre Jätigkeit.

Luftweg, Jahrg. 4, 42-43 (4 Hefte. Nov. 1920), Berlin, pp. 1-2.

- Explosion days. A German diary of life in a captive balloon.

U. S. Air Service, Vol. 2, No. 6 (Jan. 1920), New- York, pp. 6-11, ill.

- A fast German semirigid airship.

Aviation, Vol. 11, No. 4 (July 25, 1921), New York, p. 101, ill.

•- From German technical reports.

Aeronautics, Vol. IS, No. 339 (Apr. 15, 1920), London, pp. 316-317.

- German aerial enterprise. A German gliding and soaring competition.

Aor. Eng. Suppl. The Aeroplane, Vol. 19, No. 14 (Oct. 6, 1920), London, pp. 61S-622, ill.

- A German aerial time table.

Flight, No. 65S, Vol. 13 ,No. 31 (Aug. I, 1921), Loudon, p. 520.

- German aeronautical material at Antwerp.

Aerial Age, Vol. 13, No. 3 (Mar. 28, 1921), New York, p. 64. ,

Flight, No. 633, Vol. 13, No. 6 (Feb. 10,1921), London, p. 97.

—— A German aeroplane testing plant.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 3 (Jan. 19, 1921), London, p. 61.

--The. German air danger.

Flight, No. 069, Vol. 13, No. 12 (Oct. 20, 1921), London, pp. 6S1-6S2.

--German air lines.

Aerial Age, Vol. J I, No. 5 (Oct. 10, 1921), New York, p. 112.

- German air mails.

Aeronautics, Vol. 20, u. s., No. 399 (June 9, 1921;, London, p. 120. Aeronautics, Vol. 19, No. 362 (Sept. 23, 1920), London, p. 224.

Germany. German aircraft at Grain.

Aeronautics, Vol. 19, No. 370 (Nov. 1920), London, p. 3,55.

- German aircraft and indemnification figures. »

Aerial Age, Vol. 13, No. 12 (May 30,1921), New York, p. 280.

- German airplanes succeed in trials.

The Naviator, Vol. 1, No. 10 (Apr. 17, 1920).

—- German airplanes; tabulation.

Aut. Ind., Vol. 42 (Jan. 15,1920), New York, pp. 188-189.

- German airship situation.

Aviation, Vol. 9, No. 8 (Nov. 8, 1920), New York, p. 262.

- German airships.

Journ. Soc. Automotive Engineers, Vol. 7, No. 4 (Oct. 1920), New York, pp. 347-348, ill.

- German all-metal commercial machines.

Aerial Age, Vol. 13, No. 13 (June 6, 1921), New York, p. 302.

- German aviation.

Aerial Age, Vol. 14, No. 7 (Oct. 24, 1921), Now York, p. 160. Aeronautics, Vol. 19, No. 351 (July 8, 1920), London, p. 23.

--German aviation companies.

Aeronautics, Vol. 19, No. 396, (Nov. 11, 1920), London, p. 337.

- The German B. M. W. high-altitude engines.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 10 (Mar. 10, 1920), London, pp. 520-533, ill., diagr.

- German cabin plane makes debut at Mineola.

Aircraft Journal, Vol. 6, No. 16 (Apr. 17, 1920), New York, pp. 3-5, ill.

- German commercial flying.

Aviation, Vol. 9, No. 13 (Dec. 13,1920), New Y'ork, p. 425, ill.

- A German criticism of British airship performances.

Aer. Eng. Suppl. The Aeroplane, Vol. IS, No. 12 (Mar. 24, 1920), London, pp. 615-616, diagr.

- German disarmament.

Flight, No. 632, Vol. 13, No. 5 (Feb. 3, 1921), London, p. 7S. .

- German frontier aerial navigation rules.

Aerial Age, Vol. 12, No. 26 (Mar. 7,1921). New Y'ork, p. 664. Aeronautics, Vol. 20, n. s., No. 381 (Feb. 3.19211, London, p. S7.

- German gliding contest.

Aerial Age, Vol. 13, No. 6 (Apr. 18, 1921), New Yrork, p. 137.

- German gliding flight trials.

Flight, No. 663, Vol. 13, No. 36 (Sept. 8, 1921), London, pp. 597-59«.

- German high-lift wings.

Aer. Eng. Suppl. The Aeroplane, Vol. IS, No. 16 (Apr. 21, 1920), London, pp. 812, 813, diagr.

- The German M-type airships.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 21 (May 25, 1921), London, pp. 486-188, ill., diagr.

—— German night-landing scheme.

Aerial Age, Vol. 12, No. 24 (Feb. 21, 1921), New York, p. 614.

- German progress in aviation.

Journ. Soc. Automotive F.ngineers, Vol. 6, No. 6 (June 1920), New Y'ork, p. 421.

--German propeller has steel core rods with wood fillings.

Automotive Industries, Vol. 42 (Apr. 15, 1920), New York, pp. 900-901, ill., diagr.

Germany. A German sport monoplane.

Aviation, Vol. 9, No. 12 (Deo. 6, 1920), New York, p. 391, ill.

——■ German supercharger developments.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 13 (Sept. 29, 1920), London, pp. 581-582, ill.

--German state committee for aeronautics.

Aerial Age, Vol. 13, No. 17 (July 4, 1921), New York, p. 400.

- German subsidy scheme.

Aeronautics, Vol. 20, n. s., No. 401 (Juno 23,1921), London, p. 450.

- German views on airships.

Aeronautics, Vol. 20, n. s., No. 382 (Feh. 10, 1921), London, p. 91.

- German wind-tunnel tests.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 19 (May 11, 1921), London, p. 444.

- Germans build aircraft to raid France.

The Naviator, Vol. 1, No. lfi (May 29,1920), Pensacola, Fla., p. 1.

--• Germans hide airplane parts.

Aviation, Vol. 10, No. 10 (Mar. 7, 1921), New York, p. 305.

- Germany and the peace treaty.

Aeronautics, Vol. 20, n. s., No. 382 (Feb. 10, 1921), Ixindon, p. 91.

- Germany awaiting opportunity to compete for dominion of the air.

Aerial Age, Vol. 13, No. 4 (Apr. 4, 1921), New York, p. 88.

- Germany infringes clauses concerning aircraft disarmament.

Aerial Age, Vol. 12, No. 2f> (Mar. 7, 1921), New York, p. 004.

- Gliding in Germany.

Aerial Age, Vol. 14, No. 1 (Sept. 12, 1921), New Y'ork, p. 0.

- The Inter-Allied Commission in Germany.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 8 (Feb. 23,1921), London, p. 188.

- Motorless monoplane in Germany makes extraordinary flight. Rises to 300 feet

and soars for more than 13 minutes.

TJ. S. Air Service, Vol. 6, No. 2 (Sept. 1921), New York, pp. 26-27.

- New record by a new German-designed monoplane.

Literary Digest, Vol. 66 (July 17, 1920), New York, pp. 70-74, ill.

--An official view of German aviation.

The Aeroplane, Vol. 19, No. 1 (July 7,1920), London, p. 16.

- The present position of German aviation.

Flight, No. 657, Vol. 13, No. 30 (July 2?, 1921), London, p. 508.

- Second German soaring competition.

Aviation, Vol. 11, No. 15 (Oct. 10, 1921), New York, pp. 420-427, ill., map.

- The soaring flight competition, 1921.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 10 (Mar. 9,1921), London, pp. 234-230.

- Soaring flight in Germany. The Rhön competition.

Flight, No. 663, Vol. 13, No. 36 (Sept. 8,1921), London, pp. 601-605, ill., map.

- Some recent German airplanes.

Aviation, Vol. 8, No. 1 (Feb. 1, 1920), New York, pp. 20-22, ill.

- The truth about German flying.

Aeronautics, Vol. 18, No. 347 (June 10, 1920). London, pp. 441-442.

- Typical German radiator practice.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 7 (Feb. 16, 1921), London, pp. 160-162, ill.

Germany. What Germany says.

Aerial Age, Vol. 12, No. 19 (Jan. 17,1921), New York, p. 490.

—— World's largest airplane completed in Germany.

Pop. Meet)., Vol. 3.1 (June 1920), Chicago, p. S90, ill.

- See "Airliner ": Post-war aviation in Germany.

- See Airships: The German airships L-64 and L-71.

- See "Anglo-Dane": Commercial aviation in Germany.

- See Baumann, A.: Progress made in the construction of giant airplanes in

Germany during the war.

- See Bradley, W. P.: Germany grimly hopeful for her aircraft industry.

-■ See Compass: Distant-reading German airplane compass.

-- See Dalsace, A.: A propos dos avions geants allemands.

- See Diesel: A German Diesel airplane engine.

- See Dornier: A new German all-metal machine. The Dornier 05, 185 B. M. W.

engine.

- See Engines: Enemy aircraft engines, detailed descriptions of certain of the

engines in use and the German aeroplane-engine trials.

-— See Foch, Ferdinand: Foch gives figures on German aircraft.

-- SeeGohlke, H.: Ziele der deutschen Flugtechnik.

-- See Gradenwitz, Alfred: German all-metal commercial machines.

- See Gradenwitz, Alfred: German gyro gauges. The Anschutz aircraft horizon.

- See Great Britain: How England profited by, German dirigible construction.

—— See Hildesheim, Erik: Commercial aviation in Germany.

—— See Hildesheim, Erik: The development of giant aeroplanes in Germany.

- See Hildesheim, Erik: German aerial developments.

- See Hildesheim, Erik: German aero engines at the armistice.

- See Hildesheim, Erik: More German and Austrian aircraft.

- See Hildesheim, Erik: Recent German aero engine developments.

- See Büdesheim, Erik: Some new German seaplanes.

- See Hildesheim, Erik: Some German seaplanes.

- See Hildesheim, Erik: New series Vee type German Benz aero engines.

- See JL-6: The log of an aluminum air liner in first passenger flight, New York to

Chicago; the .TL-G German metal monoplane beats the Twentieth Century Limited by 12 hours.

- See Lagorgette, Jean: Les avions allemands.

- See Legge-Poole, A.: The defeat of Germany.

- See Military aeronautics: Explosion days. A German diary of life (and death)

in a captive balloon.

- See Neumann, Georg Paul: German air force in the great war . . .

- See Oldroyd, C. A.: Is Germany blurring?

- See Parsons, F. W.: Air supremacy of Germany.

Germany. See Rego, Marc: L'aéronautique allemande.

—— See Sabatier, J.: The large German airship centers and their organization. —— See Sabatier, J. : Large German airship stations.

—— See Sablatnig: The Sablatnig P. 3 monoplane. Germany's first commercial aeroplane.

- See Schwager, Otto: Development of German aircraft engines.

—— See Staaken monoplane: The new Staaken monoplane. An interesting German all-metal machine.

- See Tanzi, J.: La technique des dirigeables rigides allemands.

- See Thomas, G. Holt: Aeroplane design, German capacity, and our empire's

future in the air.

- See Upson, Ralph H. : The Bodensee commercially profitable. Postwar conditions in German aerial transportation.

- See Warner, Edward P.: The German aircraft industry.

- See Warner, Edward P.: German wind tunnels and apparatus.

- See Warner, Edward P. : Report on German wind tunnels and apparatus.

- See Wronsky, W. : Commercial aviation in Germany.

Germany-Austria. Entwurf eines Luftverkehrs-Gestzes für Deutsch-Oesterreich. Mitt. Oesterr. Aëro-Clubs, 6. Jahrg., Nr. 7 (1. Juli 1919), Wien, pp. 196-204.

Getting off. See Hill, R. M.: The manoeuvres of getting off and landing.

Giacomelli, R. Meteorologia aeronautica.

L'Aeronautica, anno 3, Num. 1 (marzo 1920), Roma, pp. 57-58.

- Le salon de l'aéronautique.

L'Aeronautica, anno 3, Num. 1 (marzo 1920), Roma, p. 14.

Giblett, M. A. A comparison of minimum temperatures for the periods I7h to 9" and 17» to 17h.

Air Ministry, Meteorological Office, Professional Notes No. 22, M. O. 245 B, London. H. M. Stationery Office, 1921, pp. 9-27, diagrs.

Gibson, A. H. Aero-engine efficiencies.

Transactions of the Royal Aeronautical Society.

Aviation, Vol. 10, No. S (Feb. 21,1921), New York, pp. 238-240.

Cited in: Aëron. Jour., Vol. 25, No. 121 (Jan. 1921), London, p. 1.

Gilbert, Eugène. Le monument à l'aviateur Gilbert inauguré à Vichy. L'Aérophile, 28 année, Nos. 19-20 (1«-15 oct. 1920), Paris, pp. 311-312.

Gill, N. J. The aerial arm.

London, Aeroplane and General Publishing Co., 1920, pp. 168, ill.

Gill, Warren D. Into the future.

The Ace, Vol. 2, No. 3 (Oct. 1920), Los Angeles, pp. 9-10, 22, ill.

Gilles, G. La chambre à dépression de Friedrichshafen.

Aéronatique, 3= année, No. 23 (avril 1921), Paris, pp. 177-179, ill.

- Le moteur d'aviation selve 300 HP.

Aéronautique, 3" année, No. 26 (juil. 1921), Paris, pp. 277-280,111.

Gillet, P. Le laboratoire Eiffel pendant la guerre.

La Conq.PAir,3»année, No. 4 (15 févr. 1920), Bruxelles, pp. 43-46; No. 5 (1 mars), pp. 54-5«.

Girauoux, Jean. Sentiment et langage.

Aéronautique, 3» année, No. 30 (nov. 1921), Paris, pp. 430-431.

Giroclinometer. Giroclinometro luminoso.

Rivista marittima (giugnio 1920), Roma, pp. 3-4.

Glass, AVilliam. Airworthiness certificates.

Aor. Eng. Suppl. The Aeroplane, Vol. 19, No. 21 (Nov. 24, 1920), London, p. 824.

Glauert, H. Full-scale experiments with different shapeB of tail plane.

Tech. Eept. Ad vis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 653-056, diagr.

- Full-scale experiments with elevators of different sizes.

Tech. Kept Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 6S9-4S94.

- Full-scale stability experiments with R. A. F. 14 wing section.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 700-709.

- Lateral control with different types of wing flaps.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 695-701.

- The longitudinal control of an aeroplane.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 642-652, diagr.

- Note on the assumption of section.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 1180-1181.

Glauert, H., and S. B. Gates. Prediction of the performance and longitudinal stability of an aeroplane, including the estimation of the effect of small changes in the design.

Tech. Eept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 576-591.

Glauert, H. "Spins."

Aeronautics, Vol. 19, No. 371 (Nov. 25, 1920), London, pp. 382-383. Flight, Vol. 12, No. 47 (Nov. 18, 1920), London, pp. 1192-1195, diagr.

- See Lindemann, F. A.; H. Glauert, and R. G. Harris: The experimental and

mathematical investigation of spinning.

- See Sandison, C. G. D., H. Glauert, and J. H. Jones: Investigation of the down-wash behind a biplane.

Glazebrook, R. Requirements of modern aircraft.

Aeronautics, Vol. 19, No. 359. (Sept. 2 1920), London, p. 17S.

- Some points of importance in the work of the Advisory Committee for Aeronautics.

Aëron. Journ., Vol. 24, No. 117 (Sept. 1920), London, pp. 479-195.

Aeronautics, Vol. 18, Nos. 346-347 (June 3-10, 1920), London, pp. 435-437, 450-452.

Flight, Vol. 12, No. 23 (June 3,1920), Loudon, pp. 602-604.

- Some requirements of modern aircraft.

Engineering, Vol. 110 (Nov. 19, 1920), London, pp. 683-6S4, diagr.

Glenn-Martin. The Glenn-Martin navy torpedo plane.

Flight, Vol. 12, No. 37 (Sept. 9,1920), London, pp. 979-980, ill.

- See Hanscom, Clarence D.: The new Glenn-Martin high-lift wing.

Glidden, Charles J. Aerial transportation, aerial touring and air travel.

Flying, Vol. 9, No. 12 (Jan. 1921), New York, pp. 735-737; Vol. 10, Nos. 1-6, (Kelj.-.luly), pp. 31-33, 70-72, 110-111, 150-152, 1S1-184, 213-216.

Gliders. See Burke, F. T>.: Airplane-type ski glider.

- See Miller : The Miller amphyglider.

- See White, G. D.: How to build a glider for $10.

Gliding. See Constantin, Jean: Sur le problème du vol a voile.

Glidino flight. Construction of gliders.

Aerial Age, Vol. 13, No. 5 (Apr. 11, 192U, New York, p. 110.

44439—25-12

170 niBLlOOKAl'IÏY OP ABRONA UriCS, 1020-1921.

Gliding flight. Gleiter.

Flug, 8. Jahrg., Nr. 15-16 (1. Aug. 1921), Wien, pp. 22-23.

- II velivolo più grande del mondo.

Rivista marittiraa (luglio-agosto 1920), Roma, pp. 17-18.

- See Germany: German gliding flight trials.

---See Soaring.

——- See Wittekind, Fritz: Gleit und Segelflug.

Gloucestershire Aircraft Company (Ltd.). See Great Britain: Modern British aircraft.

Glue. See Allen, S. W., and T. B. Truax: Glues used in airplane parts. --See Boulton, B. C. : The manufacture and use of plywood and glue.

- See Bradford, Louis J.: Failure of casein glue joints in ash.

--See Gardner, H. A. : Glues and veneers in aircraft work.

Gnome engines. Gnome engine works destroyed.

Flight, No. 654, Vol. 13, No. 27 (July 7,1921), London, p. 458.

Gnosspelius, 0. T. Pioneers of British aviation—XXXIX. Maj. O. T. Gnoss-pelius.

Aeronautics, Vol. 18, No. 341 (Apr. 29,1920), London, p. 349, ill.

Göttingen. The aerodynamic experimental station at Göttingen.

Engineering, Vol. 112, No. 2901 (Aug. 5, 1921), London, pp. 218-220, ill.

- Some Göttingen tests on thick sections.

Flight, Vol. 12, No. 16 (Apr. 15,1920), London, pp. 124-425.

- See Prandtl: Göttingen wind tunnel for testing aircraft models.

Göttingen, A. Betz. Vortices and the related principles of hydrodynamics.

Technical Notes, National Advisory Committee for Aeronautics, No. 68, (Nov. 1921), Washington (num.), pp. 22, diagrs.

Göttinger Modellversuchsanstalt für Aerodynamik. Der Einfluss der Oberflächenbeschaffenheit auf den Widerstand, untersucht an Streben.

Zeitschr. Flugt. Motorhiftsch., 11. Jahrg., Fielt 4 (28. Feh. 1920), Berlin, pp. 54-56.

Goggles. Goggle requirements.

Aviation, Vol. 10, No. 2 (Jan. 10,1921), New Y'ork, pp. 43-44.

Gohlke, H. Ziele der deutschen Flugtechnik.

Wirtschafts-Motor No. 12 (Dez. 1920), Berlin, pp. 35-36; Nos. 2-3 (Feb.-Mar. 1921), pp. 3134, 34-37, ill.

Gold, E. Aerial navigation and meteorology.

Nature, Vol. 105,1920, London, pp. 775-776.

G olden berg, V. Les diagrammes logarithmiques.

Suisse Aérienne, 3« année, 1921, No. 10, Berne, pp. 140-145, ill.

- Les données expérimentales de l'aérodynamique.

Suisse Aérienne, 3« année, 1921, No. 6, pp. 77-81, ill. Anhang von Robert Gsell.

- Un hydravion de sport: Le Dornier libellule.

Suisse Aérienne, 3« armée, 1921, No. 1S, Berne, pp. 262-263, ill.

- Le meeting de D iibendorf.

Suisse Aérienne, 3« aimée, 1921, No. 13, Berne, pp. 189-190, ill.

- Note sur les ailes de Ilandley-Page.

Suisse Aérienne, 3« année, 1921, No. 19, Berne, pp. 281-282, ill.

Goldenberg, V. Notes sur l'aviation en Europe orientale.

Suisse Aérienne, 3« année, 1921, No, 11, Berne, pp. 155-156.

Goliath F 60. See Naef, Ernest: Le Goliath F 60 à Lausanne.

Goodall, Edwin B. Trie speed of accommodation.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 3, (Mar. IS, 1920), Washington, Government Printing Office, pp. 63-69, ill.

Goodyear. The Goodyear type A pony blimp.

Aviation, Vol. 7, No. 12 (Jan. 15,1920), New York, pp. 329-530, ill..

Motorhiftschiffahrt: Das amerikanische Goodyear-Sport-Luftschiff. Flugwelt, 2. Jahrg., 6. Heft (17. März 1920), Leipzig, pp. 172-173, 111.

------ New Goodyear dirigible.

Aircraft Journal, Vol. 6, No. 7 (Feb. II. 1920), New Y'ork, p. 14.

- A sporting dirigible.

Flight, vol. 12 No. 16 (Apr. 15,1920), London, pp. 413-413, ill. Goodyear "pony blimp."

--See Maranville, A. G.: The Goodyear automatic gas valve.

Goniometric functions. See Blondell, A.: On the goniometric functions applicable to directive aerials.

Gordon-Bennett. American entries in Gordon Bennett airplane races. Automotive Manufacturer, Vol. 62, No. 5 (Aug., 1920), New York, p. 34.

■- The American Gordon Bennett racers.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 12 (Sept. 22, 1920), London, pp. 555-560, ill.

- American Gordon-Bennett team sails.

Aviation, Vol. 11, No. 10 (Sept. 5,1921), New York, p. 287.

--American planes for the Gordon Bennett cup.

Literary Digest, Vol. 66 (Sept. 11. 1920), New York, pp. S2-S6, ill

- Belgium wins Gordon Bennett balloon race.

Aviatiou, Vol. 9, No. 7 (Nov. 1,1920), New York, p. 225, ill.

- La copa Gordon-Bennett.

Tohtli, ano 5, Num. 3 (oct. 1920), Mexico, pp. 92-93, ill.

—— Coupe aeronautic!ue "Gordon-Bennett."

Conq. l'Air, 3» année, No. 5 (1" mars 1920). Bruxelles, p. 52.

---La coupe aérostatique Gordon-Bennett 1920.

L'Aérophilc, 28« année, Nos. 23-24 (1«'-15 déc. 1920). Paris, pp. 366-368, ill.

■- La coupe Gordon-Bennett a la France.

Aéronautique, 2» année, No. 16 (sept. 1920), Paris, pp. 13S-143, ill.

- Coupe Gordon-Bennett d'aviation.

L'Aérophilc, 28« année, Nos. 3/4, (1"-15 févr. 1020), Paris, p. 60.

- La coupe Gordon-Bennett d'aviation à la France.

L'Aérophilc, 28« année, Nos. 19-20 (1"-15 oct. 1920), Paris, pp. 297-304, ill.

--La coupe Gordon-Bennett des ballons gagnés par la Belgique pour 192().

L'Aérophile, 2$' année, Nos. 22-23 (1«-15 nov. 1920), Paris, pp. 340-311, ill.

- La coupe Gordon-Bennett 1921.

L'Aérophile, 29" année. Nos. 9-10, (1«'-15 moi 1921), Paris, p. 13S.

- Dayton-Wright challenger for the G.B. cup.

Aircraft Journal, Vol. 7, No. 9 (Aug. 30, 1920), New York. pp. 5-6, ill.

- Dispositions relatives à la coupe d'aviation Gordon-Bennett.

Bull. Aéro-Club Suisse, No. 1-2 (janv.-févr. 1920), Berne, pp. 18-25.

172

BIBLIOGRAPHY OF AE[50XAUTICS, 1920-1921.

Gordon-Bennett. Entries for the Gordon Bennett.

Aeronautics, Vol. 19, No. 359 (Sept. 2,1920), London, p. 182.

--Experiences in the Gordon Bennett balloon race.

Aviation, Vol. 11, No. IS (Oct. 31.1921), New York, pp. 503-501, ill.

- France wins Gordon Bennett aviation race.

Aircraft Journal, Vol. 7, No. 14 (Oct. 4, 1920), New York, p. 6.

- French keep the Gordon Bennett cup.

TJ. S. Air Service, Vol. 4, No. 3 (Oct. 1920). New York, pp. 33-34.

- The Gordon Bennett.

Aeronautics, Vol. 19, No. 303 (Sept. 30, 1920), London, p. 235; No. 364 (Oct. 7), p. 252.

- Gordon-Bennett airplane race.

Scient. Amer., Vol. 123 (Oct. 16, 1920), New York, p. 396.

- The Gordon Bennett aviation trophy.

Aerial Age, Vol. 11, No. 25 (Aug. 30, 1920), New York, p. S29.

--The Gordon Bennett aviation trophy contest.

Flying, Vol. 9, No. S (Sept., 1920), Now York, pp. 506-507, ill.

- The Gordon Bennett balloon race.

Aircraft Journal, Vol. 7, No. 16 (Oct. IS, 1920), New York, pp. 3-4, ill.

- The Gordon-Bennett cup race.

The Ace, Vol. 2, No. 2 (Sept. 1920), Los Angeles, pp. 9, 24, 2S, ill. Aircraft Journal, Vol. 7, No. 7, (Aug. 16, 1920), New York, p. 5.

- The Gordon Bennett Cup. U. S. A. Army entry.

Aeronautics, Vol. 19, No. 35S (Aug. 26, 1920), London, p. 166.

- Gordon Bennett entry of the U. S. Air Service.

Aviation, Vol. 0, No. 5 (Oct. 1,1920), New York, pp. 14S-149. ill.

- The Gordon Bennett. Interesting Curtiss entry.

Aeronautics, Vol. 19, No. 357 (Aug. 19, 1920), London, p. 153.

- Gordon-Bennett 1920. The cup goes to France.

Flight, Vol. 12, No. 41 (Oct. 7, 1920), London, pp. 1055-1059, ill.

- Der Gordon-Bennett-Preis der Lüfte 1921 für die Freiballone.

III. Flug-Woche, 3. Jahrg., 21. Heft. (23. Nov. 1921), Leipzig, pp. 495-497 ill

- The Gordon-Bennett race.

Flight, Vol. 12, No. 40 (Sept. 30, 1920), London, p. 103S.

- On the last Gordon Bennett race, September 28, 1920.

The Aeroplane, Vol. 19, No. 14 (Oct. 6, 1920), London, pp. 607-612, 625-626,111.

- Our Gordon Bennett cup challengers.

Aviation, Vol. 9, No. 3 (Sept. 1, 1920), Nuw York, p. 92, ill.

- Presentation of the Gordon Bennett trophy.

Aviation, Vol. 9, No. S (Nov. S, 1920), New York, p. 265, ill.

- Reflections on the Gordon Bennett race.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 22 (June 1, 1921), London, pp. 510-511

—— La réunion et le diner du 12 octobre à l'occasion de la coupe Gordon-Bennett et du meeting de Bue.

L'Aérophile, 28» année, Nos. 21-22 (1"-15 nov. 1920), Paris, pp. 346-352.

- The S. E. J. Cox Gordon-Bennett expedition.

Aerial Age, Vol. 11, No. 26 (Sept. 6,1920), New York, pp. K67, SSI, &S3, ill.

- The sixth Gordon Bennett aviation race.

Aircraft Journal, Vol. 7, No. 15 (Oct. 11,1920). New York, pp. 3-5, ill.

- BIBLIOGRAPHY OP AERONAUTICS; 1920-1921.

Gordon-Bennett. Some Gordon Bennett racers.

Aer. Eng. Suppl. The Aeroplane, Vol. 19. No. 20 (Not. 17,1920), London, pp. 791, 796, diagr

- TJ. S. A. Army entry.

Aeronautics, Vol. 19, No. 35S (Aug. 26,1920), London, p. 166.

- See Bradley, W. F.: Bennett cup winner uses novel, cooling equipment.

-- See Dollfus, Charles: La coupe Gordon-Bennett des ballons libres.

- See Ide, J. J. : Last race for the Gordon Bennett cup.

■- See Lémonon, B. IL: Les avions de la coupe Gordon-Bennett.

--See Lescarboura, A. G: America's bid for the Gordon Bennett cup.

- See Margolis, W. : Lessons of the Gordon Bennett race, 1920.

--See Races: The approach of two classic races: The Schneider and the Gordon-Bennett.

- See Saladin, Raymond: Derniers échos de la coupe Gordon-Bennett.

- See Upson, Ralph: Lessons of the Gordon Bennett balloon race.

Gorrell, Fdgar S. Air navigation.

Journ. Soe. Automotive Engineers, Vol. 7, No. 5 (Nov. 1920), New York, pp. 411-412.

Gorrell, Edgar S., and Pnix. Carroll. Colonel Raynal Cawthorne Boiling. Lawyer—cavalryman—flyer.

TJ. S. Air Service, Vol. 3, No. 2 (Mar. 1920), New York, pp. 1S-20, ill.

Gorrell, Edgar S. Rules of the air.

TJ. S. Air Service, Vol. 4, No. 2 (Sept. 1920), New York, pp. 11-15, ill.

Gorton", W. S. The subsidiary gap as a means for improving ignition.

Fifth annual report of National Advisory Committee for Aeronautics. Washington. 1920, pp. 177-190, ill.

Gorton, Walter T. Aircraft machine guns.

Aviation, Vol. 10, No. 23 (June 6, 1921), New York, pp. 721-727, ill.

Gose, John. A fire-prevention device.

Aeronautics, Vol. 10, No. 363 (Sept. 30, 1920), London, p. 245.

Gosport. The Gosport system.

Air Power, contd. from Vol. 5, No. 12, Vol. 6. No. 6 (June 1920), New York, pp. 176-179,190.

Gotha. See Hildesheim, Erik: The latest twin-engined Gotha war aircraft.

Göttlich, S. Note on northeast component winds observed Jan. 27-31, 1920. Monthly Weather Review, Vol. 48 (Feb. 1920), pp. 81-82.

Gouault, Emile. L'état actuel de l'aéronautique en France. Génie Civil, Vol. 77 (3 juill, 1920), Paris, pp. U-13.

--La navigation commerciale aérienne.

Génie Civil, Vol. 75, No. 17 (oct. 25, 1919), l'aris, pp. 391-391, figs.

Goubert, Louis. L'aéronautique au LHm" concours Lépine.

Vie Aérienne, 5« année, No. 7 (18 sept. 1920), Paris, p. 106, ill.

- L'aviation de transport.

Vie Aérienne, 5" année, No. 21 (25 déc. 1920), Paris, p. 32«.

- Hommage d'un fantassin a Georges Guynemer.

Vie Aérienne, 5e année, No. 6 (11 sept. 1920), l'aris, S2-S1, ill.

- L'homologation de la coupe G. B. des petits aéroplanes.

Vie Aérienne, 5e année, No. 17 (27 nov. 1920), Paris, p. 25S.

- Les mémoires de Denhaut.

Vie Aérienne, 5- année, 1920, Taris, pp. 315-310, 323-324. ill.

Gouhkrt, Louis. La traction sur route par hélice aérienne.

Vie Aérienne, 5' année. No. 1 (5 août 1920). Paris, pp. 12-13, ill.

--La turbine à combustion appliquée à la locomotion aérienne; par L. Goubert

et H. Haddc.

Vie Aérienne, 5« année, 192», Paris, pp. 269-270.

Gourdou. Les études de MM. Gourdou et Lessourre.

Aéronautique, 3« année, No. 30 (uov. 1921), Paris, p. ISO, ill.

Gourdou-Lesseurre. Französischer Eindecker Gourdou-Lesseurre.

Flugsport, 12. Jahrg., No. 5 (3. März 1920), Frankfurt a. M., pp. 117-118.

Gourdou, Carles, and J. Lesiïurre. Calcul des longerons d'une aile d'avion. Aéronautique, 1« année, No. 12 (mai 1920), Paris, pp. 510-540.

Gourdou, Charles. The Gourdou-Lesseurre pursuit aeroplane.

Aircraft Technical Note No. 174, Department of the Navy, Bureau of Construction &• Kepair, Washington (Apr. 6, 1920), pp. 7, ill.

Gkabv, Raoul. Un peu partout.

Vie Aérienne, 5e année. No. 1 (5 août 1920), Paris, p. 16.

Gradenwitz, Alfred. Automatic cinematograph for aerial surveying. Aviation, Vol. 9. No. 1 (Aug. 1,1920), New York, pp. 24-25.

- Flyer's artificial eye and ear.

Scient. Amer., Vol. 123 (Dec. 4, 1920), New York, p. 573, ill.

- Doctor Nimfuhr's solution of the soaring flight problem.

Aeronautics, Vol. 20, n. s., No. 388 (liar. 24, 1921), London, pp. 203-204, ill.

- German all-metal commercial machines.

Aeronautics, Vol. 20, n. s., No. 394 (May 5,1921). London, pp. 314-315, ill.

- German gyro gauges. The Auschutz aircraft horizon.

Aeronautics, Vol. 20, n. s., No. 398 (.Time 2, 1921). London, pp. 390-391, ill.

— German gyro gauges. The Drexler aircraft steering gauge.

Aeronautics, Vol. 20, n. s., No. 401 (June 23,1921), Loudon, pp. 451-452, ill.

- - Intelligence tests at high altitudes.

Aeronautics, Vol. 20, n. s., No. 389 (Mar. 31,1921), London, pp. 221-222, ill.

---- Kinematographie surveying.

Aeronautics. Vol. 20, n. s., No. 390 (Apr. 7, 1921), London, pp. 237-23S, ill.

------ New types of parachutes.

Aviation, Vol. 11, No. 1 (July 4, 1921), New York, p. 22, ill.

--The 1,000-horsepower Zeppelin monoplane.

Aeronautics, Vol. 20, n. s., No. 385 (Mar. 3,1921), London, p. 155, ill.

- A remote control compass.

Aviation, Vol. 10, No. 1 (Jan. 3,1921), New York, pp. 19-20, ill.

Grahame-YVhite. Grahame-White "Aero limousine."

Aerial Age, Vol. 12, No. 2 (Sept. 20, 1920), New York, pp. 46-47, ill., diagr. Aircraft Journal, Vol. 6, No. 3 (Jan. 17,1920), New York, p. 9, diagr.

- The Grahame-AVhito E-S nine-seater limousine.

Flight, Vol. 12, No. 13 (Mar. 25, 1920), London, pp. 335-337, ill.

- G rahame-'White-Gross Verkehrs-Flugzeug.

Flugwelt, 2. Jahrg., 6. Heft (17. März 1920), Leipzig, pp. 164-165, ill.

- See Reif, E. F.: Tests on a model of the Grahame-White bombing machine

G. W. E4.

Grain. See Germany: German aircraft at Grain.

Gramberü, A. Maschinen untersuchugen und das Verhalten der Maschinen im Betriebe.

Reviewed in: Zeitschr. Fingt. Motorluftsch., 11. Jahrg., Heft 14 (31. Juli 1920), Berlin, p. 210.

Grammel, R. Der Kreisel.

Braunschweig, Friedr. Yieweg & Sohn, 1920, pp. x, 350, iti.

Reviewed in; Zeitschr. Fingt. Motorluftsch., 11. Jahrg., Heft 22 (30. Nov. 1920), Berlin, p. 333.

G ram ont, Armand de, Duc de Guiche. Essais d'aérodynamique, Volume IV, quatrième serie.

Paris, 1920, pp. ISO, ill.

Reviewed in: Aéronautique, 2» année, no. 17 (oct. 1920), Paris, p. 203.

---La navigation aérienne par temps de brume.

L'Aérophile, 2fl année, Nos. 2-3 (1«'-15 févr. 1921), Paris, pp. 42-45, 58-59, ill.

Grand Canyon. Flight through the Grand Canyon.

Aviation, Vol. 11, No. 9 (Aug. 29,1921), New York, p. 255.

- See Arizona: A flight thru the Grand Canyon of Arizona.

Granet, André. See Blanchet, Georges: La VII8 exposition de la locomotion aérienne. L'organisateur du salon André Granet.

Grant, Hugh Duncan. A contribution to the meteorology of the English Channel. Aëron. Journ., Vol. 25, No. 121 (Jan. 1921), London, pp. 25-38, ill., diagrs.

Grasset, A. L'aéronautique, el la guerre maritime.

Aéronautique 3« aunée No 30 (nov. 1921), Paris, p. 426.

Gravity. See McAdie, A.: Gravity and aerostatic pressure on fast ships aud airplanes.

Gray, C. F., J". W. Reed, and P. N. Eldebkin. Air fans for driving aircraft generators.

Engineering and Industrial Management, Vol.5, n. s., No. 4 (Jan. 27, 1921), London, pp. 98-100, ill.

Great Britain. Aeronautics in 1919.

Engineer, Vol. 129 (Jan. 2-9, 1920), London, pp. 5-8, 31-36, ill.

- Advisory Committee reports.

Plight, Nos. 648,649, Vol. 13, Nos. 21, 22 (May 26, June 2,1921), London, pp. 364, 373. Reports published by the Aeronautical Research Committee.

- Air conferences, Oct. 12-15.

Engineer, Vol. 130 (Oct. 15-29, 1920), London, pp. 372, 406-40S, 431-433. Engineering, Vol. 110 (Oct. 15-22, 1920), London, pp. 512-515, 528-532.

---The air estimates.

Flight, No. 644, Vol. 13, No. 17 (Apr. 28, 1921), London, pp. 2S5-2S6.

---- Air League of the British Empire.

Flight, Vol. 12, No. 24 (June 10,1920), London, pp. 028-629.

- Air ministry competitions, 1920.

Engineering, Vol. 110 (i^ept. 10, 1920), London, p. 343.

- Airplane has been put to work in Great Britain.

Automotive Industries, Vol. 42 (June 3,1920), New York, p. 1253.

--Aviation taking its place.

Flight, Vol. 13, No. 26, No. 653 (June 30, 1921), London, pp. 431-432.

- British aerial .events in 1920.

Journ. Soc. Automotive Engineers, Vol. 7, No. 1 (July 1920), New York, p. 32.

- Britain's part in the air.

Aeronautics, Vol. 19, No. 357 (Aug. 19, 1920), London, pp. 111-112.

Ghkat Britain, British aerial invasion.

Literary Digest, Vol. 60 (July 3,1920), New York, pp. 28-29, ill.

- British aerial navigators' certificates.

Aerial Ape, Vol. 12, No. 3 (Sept. 27, 1920), New York, pp. S3-85.

- British air mail.

Aerial Age, Vol. 13, No. 20 (Kept. 5, 1921), New York, p. 622.

--British aircraft accessories.

night, No. 674, Vol. 13, No. 47 (Nov. 24, 1921), London, pp. 783-787, ill.

- British aircraft competitions. 1920.

Aircraft Journal, Vol. 7, Nos. 2-3 (July 12-19, 1920), New York, pp. 8,5-7. Aviation, Vol. 10, No. 11 (Mar. 14, 1921), New Y'ork, p. 338.

- British air limousine.

Auto. Tnd., Vol. 41 (Nov. 27,1919), New York. pp. 1070-1071, diagr., plans.

--The British airship situation.

Aerial Age, VoJ. 14, No. 10 (Nov. 14,1921), New York, p. 232.

--British aviation record.

Aeronautics, Vol. 20, n. s., No. 378 (Jan. 13,1921), London, p. 33.

- British commercial airplanes—1919-20; tabulation.

Auto. Ind., Vol. 42 (Jan. 15, 1920), New York, pp. 178-179.

—— British Government warns against aircraft perils.

Literary Digest, Vol. 65 (June 19, 1920), New York, pp. 102-104.

- British governmental cooperation in commercial aeronautics.

Aerial Age, Vol. 13, No. 19 (July 18,1921), New York, pp. 443, 454.

- British imperial air routes.

Flying, Vol. 9, No. 5 (June 1920), New York, pp. 338, 341-343.

——- British military and naval airplanes on which authentic data have been released since November 11, 1918; tabulation.

Auto. Ind., Vol. 42 (Jan. 15, 1920), New York, pp. 180-187.

- British Ministry announces plan for airship development.

Flying, Vol. 9, No. 12 (Jan. 1921), New York, p. 737. Air Ministry communique, 629.

- British night flying.

Aircraft Journal, Vol. 6, No. 11 (Mar. 13,1920), New Y'ork, p. 13.

--British plan fiuancing air transport.

Aircraft Journal, Vol. 7, No. 9 (Aug. 30, 1920), New York, p. 6.

--British pilots required to pass examination in navigation.

Flying, Vol. 10, No. 3 (Apr. 1921), New York, pp. 102-104.

--British terms for disposal of airships.

Aerial Age, Vol. 13, No. 16 (June 27,1921), New Y'ork, p. 376.

--Civil aviation in the House.

Flight, No. 610, Vol. 13, No. 13 (Mar. 31, 1921), London, p. 220.

- Civil flying progress in Britain.

Aerial Age, Vol. 13, No. 2 (Mar. 21, 1921), New York, p. 40.

—— Civilian flying in England.

The Naviator, Vol. 1, No. 3 (Feb. 28,1920), Pensaeola, Fla., p. 3.

--Concerning the Government, the press, the public, and incidentally aviation.

Aer. Eng. Suppl. Tho Aeroplane, Vol. 21, No. 5 (Aug. 3,1921), London, pp. 101-104.

BIBLIOGRAPH ST OP AERONAUTICS, 1920-1921.

177

Great Britain'. Cooperation of aircraft with artillery.

London, His Majesty's Stationery Office, 1920, pp. 90.

(Revised edition.) (Provisional.) Issued by the General Staff.

- Cost of the air war.

Aeronautics, Vol. 19, No. 350 (July 1, 1920), London, p. 12.

■- The Department of Civil Aviation.

Flight, No. 652, Vol. 13, No. 25 (June 23, 1921), London, pp. 116, IIS.

Half yearly report on the progress of civil aviation, Oct. 1, 1920 to March 31, 1921.

- The Dominions and aircraft.

The Outlook, Vol. 46, No. 1191 (Nov. 27, 1920), London, p. 551.

- England frees air to civilians.

The Naviator, Vol. 1, No. 14 (May 15, 1920), Pensacola, Fia., p. —.

- The future of British flying.

Flight, Vol. 12, No. 14 (Apr. 1, 1920), London, p. 3S0.

- Government aeroplane competitions, 1920 and 1912.

Aeronautics, Vol. 19, No. 355 (Aug. 5, 1920), London, pp. 109-113, diagr.

--Halbjahresbericht des britischen Luftministeriums.

111. Flug-Woche, 3. Jahrg., 17. Heft (3. Aug. 1921), Leipzig, pp. 346-347.

- Half-yearly report on British civil aviation.

Aerial Age, Vol. 13, No. 17 (July 4,1921), New York, pp. 394-395. Flying, Vol. 10, No. 6 (July 1921), New York, pp. 209-210.

- How England profited by German dirigible construction.

The Naviator, Vol. 1, No. 1 (Fob. 14, 1920), Pensacola, Fia., p. 4.

- Luftpolitik Englands.

Flugwelt, 2. Jahrg., 6. Heft (17. März 1920), Leipzig, pp. 102-168, ill.

- Machinas de aviaçâo Britannicos.

Aeronautics, Vol. 20, n. s., No. 393 (Apr. 28, 1921), London, pp. 292-297, ill.

--Modern British aircraft. A résumé of machines and engines of to-day.

Flight, No. 672, Vol. 13, No. 45 (Nov. 10, 1921), London, pp. 726-710, ill.

- Modern British engines. A résumé of aero engines of to-day.

Flight, No. 673, Vol. 13, No. 46 (Nov. 17, 1921), London, pp. 750-757. ill.

More about British engines.

The Aeroplano, Vol. 20, No. 16 (Apr. 20, 1921), London, p. 368.

La navigation commerciale aérienne en Grande-Bretagne. Génie Civil, T. 77, No. 23 (Dec. 4, 1920), Paris, pp. 436-460, ill. Models submitted for Air Ministry competition held Sept. 1920.

--The Navy and the air.

Flight, No. 653, Vol. 13, No. 26 (June 30, 1921), London, p. 432.

- The 1920 British air program.

Air Power, Vol. 6, No. 2 (Feb. 1920), New York, pp. 10-47, ill.

---On the British aircraft industry as it is and was.

The Aoroplane, Vol. 18, No. 26 (June 30, 1920), London, pp. 12(1-1252.

Passenger air service is planned. British plan air service between London, Brazil, and Argentine Republic.

The Naviator, Vol. 1, No. 37 (Dec. 4, 1920J, Pensacola, Fia., pp. 1-2.

—■— Pioneers. Celebration in honor of the first 100 British aviators and the pieneers of British aviation.

Aeronautics. Vol. 19, No. 352 (July 15, 1920), London, pp. ii-ii, 17-19.

Great Britain. 1'rivy council. Medicai Research Council. The medical problems of flying, including reports Nos. T—VIT of the Air Medical Investigation Committee.

London, H. II. Stationer}' Office, 1920, pp. 272, ill., diagrs., tables. (Special Report Series, No. .iSI.

Contents: 1. Report on the medical aspects of high (lying. 2. Asimpleprocediirefortesting the effect of "oxygen want" on Hying men, by Professor G. IVeyer. 3. The bag method for the investigation of air disabilities of aviators, by Lieut. Col. Martin Flack. 4. A study of the reaction of pilots and observers to diminish oxygen pressure, by the late C. 11. 1-1. Corbett and 11. C. tìa/.elt. 5. A report on the value of oxygen to aviators at. relatively low altitudes by Lieut. Col. Martin Flack ami Lieut. Col. C. 13. lleald. 0. The selection of candidates for Hying, by Lieut. Col. Martin Flack and Lieut. Col. A. P. Bowdler. 7. Tests for flying efficiency and dying strain, by Lieut. Col. Martin Flack. 8. Temperament and service Hying, by J. L. Birley. 9. Respiratory tests for ability to stand high altitudes, by H. C. Bazett. 10. Observations on the respiration of airman, by Grace Briscoe. II. The sense of stability uud l,.viance in the air, by I lenry Head. 12. Mental aptitude for aviation, by \\r. H. IÎ. Rivers and squadron leader T. S. Kippon, in collaboration with the late Lieut. E. G. Manuel. 13. '•Reaction time" tests carried out on (light cadets, with description of apparatus, by the hue L. E. Stunun

- - Progress of British civil aviation.

Aviation, Vol. 10, No. 7 (Feb. 14, 1921), New York, pp. 207-208.

— Progress of civil aviation. A digest of half-yearly report issued by British Air Ministry.

Flying, Vol. 10, No. 1 (Feb. 1921), New York, pp. 16, 27.

--The progress of civil aviation. Half-yearly report of the Controller-General

of C. A.

Flight, No. 6S1, Vol. 13, No. 24 (June 16, 1921), London, p. 412.

--Rapport du Comité Britaniquo d'études théoriques et pratiques de l'aéronautique. Résumé.

Suisse Aérienne, 21, année, No. 7 (10 avr. 1920), Berne, pp. 101-105.

--Résumé de communiqué No. 514 du Ministère britannique de l'air.

Suisse Aérienne, 2« année, Nos. 9-10 (mai 1920), Berne, pp. 144.

------ The Royal Aero Club of the United Kingdom.

Flight, Vol. 13 (1921), London, pp. 41, 76, 241, 274, 406, 422.

- Smallest British airplane weighs 220 pounds.

Pop, Mech., Vol. 33 (Feb. 1920), Chicago, p. 181, ill.

- Some machines at the Air Ministry competitions.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 7 (Aug. IS, 1920), London, pp. 372-376, ill.

--Typische Britische Flugzeuge.

Aeronautics, Vol. 20, n. s., No. 397 (May 2(5, 1921), London, pp. 372-377, ill.

---T)e vooruitgang van het luchtverkeer.

Vliegveld, 5«. jaarg., No. 15 (16 Juli 1921), Amsterdam, pp. 210-217.

---Work of the British Air Office.

Aerial Age, Vol. 14, No. 2 (Sept. 19, 1921), New York, p. 40.

- See Advisory Committee for Aeronautics.

- See Air Ministry: Civil Aviation Advisory Board.

- See Airships: The future of British airships.

- See Airships: The largest British-built airship.

- See Argentina: British enterprise abroad.

- See Browne, £. A.: Vom grössten- Verkehrsflugzeug Grossbritanniens.

- See Certificates: British aerial navigators' certificates.

- See Civil Aviation: Six months'flying. Summary of official report.

- See Estimates.

Great Britain. See Japan: British aviation in Japan. —— See Magnetos: British magnetos.

- See Manufacturers Aircraft Association: British air power and air policy.

Analysis of British air appropriations, 1921-1922.

------ See Mail: England recognizes America's lead in aerial mail.

- See R-80: Aerial cruiser; details concerning the latest British rigid dirigible

R-80.

- See Routes: The imperial air routes.

- See Royal Aeronautical Society. Associate fellowship.

-- See Whale, G.: British airships, past, present, and future.

- See Wood, C.: The Chinese market for British aircraft.

- See Wright patents: British planes licensed under Wright patents.

Great Lakes. Naval aviation school is great.

The Naviator, Vol. 1, No. 22 (July 17, 1920), Pensaeola. Fla., p. 1.

Great Steam Duck. Great steam duck; the first western tract on aviation.

Magazine of History with Notes and Queries, No. 66, Pt. 1, Tavrytown, N. V., William Ab'uatt, 1920, pp. 22.

Greece. Commercial "aviation in Greece.

Plight, Vol. 12, No. 29 (July 15, 1929), London, p. 7SJ.

Green, F. M. Development of the fighting aeroplane.

Plight, No. 67S, Vol. 13, No. 51 (Dec. 22,1921), London, p. S17.

Green, F. M. The technical history of the aeroplane.

Plying, Vol. 9, No. 10 (Nov. 1920), New York, pp. 631-631, diagr; Vol. 9, No. U (Dec. 1920), pp. 6SS-6S7.

Green Engine Co. See Great Britain: Modern British engines.

Greenhill, Georgk. Compass deviation due to vibration, without friction. Tech. liept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 539-553.

- - Flying as affected by the wind.

Tech. Kept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, p. 1159, diagr.

--Gyroscopic stability of a flying machine.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. I, Loudon, 1929, pp. 254-255.

Gregg, Harold W. See Schneider, Edward t\, Iirenton R. Lutz, and Harold W. Gregg: The changes in the content of hemoglobin and erythrocytes of the blood in man during short exposures to low oxygen.

- See Schneider, Edward G, Brenton R. Lutz, and Harold W. Gregg: Compensatory reactions to low oxygen.

Gregg, Willis Rav. Average free-air conditions as observed by means of kites at Drexel Aerological Station, Nebr., during the period November, 1915, to December, 1918. inclusive.

Monthly Weather Review, Vol. IN, Ian. 1920, Washington. 1>. C.4pp. 1-11.

- The highest aerial sounding.

Monthly Weajhcr 'Review, Vol. IN, No. II (Nov. 1929;, Washington, p.

Some recent papers on the rate of ascent of pilot balloons.

U.S. Dept. of Agriculture. Weather Bureau. Monthly Weather Review. Vol. 48, 1920, Washington, 1921, pp. 691-696.

Gregory, Sir Richard. Discovery.

Nature, Vol. 108, No. 2714 (Nov.:), 1021), London, p. 297.

G rkxoble, II. S. Strength tests of screw fastenings of plywood.

Aerial Vge. Vol. 12. No. 21 (.Tan. 31, 1921), New York, pp. 535-5311. Aviation, Vol. 10. No. S (Feh. 21, 1921), New York, p. 239.

Grey, Charles Grey. All the world's aircraft, 1919.

London, 1920. Sampson Low, Marston & Co. (Ltd.).

1/Aprophile, 2S aimée, Nos. 3/4, (]<"--]-, févr. 1920), Paris, p. xix.

I .ondon, Sampson, Low, Marston & Co.. 1921, pp. 300, 74, 33, ill.

Reviewed in; 111. Flug-Woche, 3. Jahrg., 11. Ilelt (25. Mai 1921), Leipzig, p. 219.

- French and Italian hydroaeroplanes at Monaco.

FnRineerlnR, Vol. 109 (May 14, 1920), London, pp. 055-B5R, ill.

- Ou a tour in the west country.

A er. Uns. Suppl. The Aeroplane, Vol. 20, No. 28 (June 29, 1921), London, pp. 590-594.

- On the Japanese-American war.

Aeroplane, Vol. 20, No. 20—(May IS—, 1921), London, pp. 453-454, 473-474.

- On variable and other wings.

Aer. Eng., Suppl. The Aeroplane, Vol. 20, No. 20— (May IS, 1921), London, pp. 459-462, 4S1-4S2, 503-504, 525-530.

- Wliy Great Britain has no airships. British business man arraigned for failure

to see that airship lines would reestablish trade in one-fourth the time it will take in present circumstances.

TJ. S. Air Seivicc, Vol. 6, No. 2 (Sept. 1921), New York, pp. 21-22.

- See Jaue, F. T.: All the world's aircraft, 1920. Edited and compiled by C. G.

Grey.

Grey, Robin. Major Robin Grey.

Aeronautics, Vol. 20, n. s., No. 396 (May 19,1921), London, p. 364).

Grey, Spenser D. A. Pioneers of British aviation—XXXIII: Lieut. Col. Speuser D. A. Grey, D. S. O.

Aeronautics, Vol. IS, No. 334 (Mar. 11,1920), London, p. 213, ill.

Griebsch, Wilhelm. Leutnant d. R. Wilhelm Griebsch.

Fhigwell, 2. Jahrg., 17. Kelt (18. Aug. 1920), Leipzig, p. 455, port.

Gries, Aloys v. Flugzeugstatik.

Berlin, Julius Springer. 1921, pp. xii, 380, ill.

Reviewed in: 111. Flug-Woche, 3. Jahrg., 21. Kelt (12. Okt. 1921), Leipzig, p. 435.

Griffith, A. A., and G. 1. Taylor. The application of soap films to the determination of the torsion and flexure of hollow shafts.

Tech. Kept. Advis. Com. Aeronautics, 1917-1S, Vol. 3, London, 1921, pp. 93S-949, ill.

Griffith, A. A. The determination of the torsional stiffness and strength of cylindrical bars of any shape.

Tech. Rept. Advis. Coin. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 910-919, diagrs.

---- On the shape of ßns for the cooling of hot surfaces by a stream of air.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 415-422.

Griffith, A. A., and B. Hague. On the shape of propeller blades.

Tech. Rapt. Advis. Com. Aeronautics, 1917-1S, Vol. 2, London, 1921, pp. 171-4S3. diagr.

Griffith, A. A., anil G. 1. Taylor. The problem of flexure and the solution by the soap-film method.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 950-969, ill.

Griffith, A. A. The phenomena of rupture and flow in solids.

Philosophical Transactions, Royal Society oi London, Ser. A, Vol. 221, A5K7 (London, 1920), pp. 163-HK.

Griffith, A. A., arid C. Wigley. A preliminao' investigation of certain elastic properties of wood.

Tech. Kept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 986-1000, ill.

Griffith, A. A., and B. Hague. Preliminary report on the twisting of propeller blades.

Tech. Kept. Advis. Cora. Aeronautics, 1917-18, Vol. 2, London, 1921, pp.484-505, ill.,diagr.

- Second report on the twisting of propeller blades.

Tech. Rep. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 506-514,

Griffith, A. A. See Taylor, G. I., and A. A. Griffith. The use of soap films in solving torsion problems.

Griffiths, B. See Stanton, T. E.: Miss Dorothy Marshall and E. Griffiths: On the dissipation of heat from the surface of an air-cooled engine when running and when at rest.

Griffiths, E. A., and T. Lavender. Effect of convex undersurfaces on aerofoils. Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 86-91.

Griffiths, E. A., and J. D. Coales. Effect of variation in the bottom chamber of aerofoils.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 84-85.

Griffiths, E. A., and R. Jones. Effect on modifying the undersurface of R. A. E. 14 wing section.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 82-83.

Griffiths, E.A., and C. H. Powell. Experiments on aerofoils designed for high values of lift coefficient.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 92-94, diagr.

Griffiths, E. A. Experiments on an aerofoil with flap extending along the whole length.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 89-101, diagr.

Griffiths, E. A., and C. H. Powell. Experiments on models of airship screens. Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 60-62.

•- Forces and moments on triplanes.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 143-150.

- Further experiments on wing (A) of the previous section to obtain a comparison

with standard wing sections, eliminating the effect of plan form and aspect ratio.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 95-96.

- Influence of a small body placed on an aeroplane wing at its center.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 210-212, diagr.

-■ Model test on fairing for chassis axle.

Tech. Rept. Advis. Com. Aernautics, 1916-17, Vol. 1, London, 1920, pp. 165-166.

Griffiths, E. A. Report on model airship dock.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 63-64, diagr.

Griffiths, E. A., and C. H. Powell. Tests for the Air Department of the Admiralty on body of Handley Page aeroplane.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, p. 151.

- Test of Avro wing section.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 74-75.

- Test of the standard R. A. F. 6a wing section.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 75-78, diagr.

- Tests of R. A. F. 3-wing section under standard conditions.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 71-73.

Griffiths, B. A., and C. H. Powell. Tests on aerofoils R. A. F., 15, 16, and 17. Tech. Rept. Advis. Corn. Aeronautics, 1915-17, Vol. 1, London, 1920, pp. 83-88.

Griffiths, E. A., and F. G. Woodford. Tests on a series of aerofoils with varying camber.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 76-82.

Griffiths, B. A. Tests on high-tension magnetos.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 45-1-456, diagr.

Griffiths, B. A., and C. If. Powell. Tests on two aerofoils for the Aircraft Manufacturing Co. (Ltd.).

Tech. Rept. Advis. Com. Aeronautics, 1910-17, Vol. 1, London, 1920, pp. 68-70, diagr.

Griffiths, E. A., and J. D. Coales. The wind resistance of an aeroplane wheel. Teeh. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 221, diagr.

Griffiths, E. A. See Nayler, J. L., and E, A. Griffiths: Test on R. A. F. 14 wing section.

■- See Pannell, J. R., and E. A. Griffiths: Determination of the forces and moments

acting on a model of a flying boat hull.

■- See Pannell, J. R., and E. A. Griffiths; The effects of the variation of gap,

stagger and angle between the chords of a biplane.

---- See Pannell, J. R., E. A. Griffiths, and J. D. Coales: Experiments on the

interference between pairs of aeroplane wires of circular and lenticular cross-section.

- See Pannell, J. R., and E. A. Griffiths: Forces and moments on upper and lower

planes of a biplane.

Grigg, A. D. See AVilliarn Froude National Tank Staff, and A. D. Grigg: Experiments with models of seaplane floats. (Ninth series).

Grimault, P. Les concours officiels d'avions civils pour 1920 en France et en Angleterre.

Aéronautique, ie année, No. 11, (avril 1920), Paris, pp. 471-475.

- Sur l'atmosphère standard.

Aéronautique, 2« année, No. 14, (juil. 1920), Paris, pp. 93-96.

--Le vent sous l'aile.

Aéronautique, 3e année, No. 22 (mars 1922), Paris, pp. 118-119.

Grissell prize. Airship and architects. A 1921 competition.

Plight, No. 650, Vol. 13, No. 23 (June 9,1921), London, p. 393, ill.

Prize oi £50 and a gold medal given by the Royal Institute of British Architects.

Grôschler, A. Flugpost-und Luftverkehrspropaganda. Luftweg, Nr. 11-12 (24. Mârz 1921), Berlin, p. 90.

Grose, Frederick J. Performance calculations of an aeroplane.

Aeronautics, Vol. 18, No. 338 (Apr. 8, 1920), London, pp. 290-294, diagr.

Grosse. Segerflugfragen.

Flugsport, 13. Jahrg., Nr. 5 (2. Marz 1921), Frankfurt, pp. 115-117.

Ground engineering. Notices to ground engineers.

Flight, No. 635, Vol. 13, No. 8 (Feb. 24,1921), London, p. 129; No, 636, No. 9, March 3, p. 158.

—■— See Air Ministry: Air Ministry notice to ground engineers.

- See Garden, P. T.: [Ground engineering.] Discussion of lecture by H. W. S.

Outram.

- See Outram, II. W. S.: Ground engineering.

Ground indicator. See Hill, R. M.: The inanoeuvers of getting and landing.

Groves, Robert Marsland. Air Commodore Groves killed. Flight, Vol. 12, No. 23 (June 3,1920), London, p. 588.

- R. M. Groves memorial prizes for the R. A. F.

Flight, No. 641, Vol. 13, No. 14 (Apr. 7,1921), London, p. 240.

Grzedzinski, January. Stefan Drzewiecki.

Warazawa Bibljoteezka " Lota," 1921, pp. 14, port.

G sell, Robert. Abriss de letzten Entwicklung der Verkehrsflugzeuge. Suisse Aérienne, 3P année, No. 1 (janv. 1921), Berne, pp. 5-6, ill.

- Anpassung.

Flugwelt, 2. Jahrg., 12. Heft (9. Juni 1920), Leipzig, pp. 328-331, ill.

—— Anhang zu Goldenberg: Les données expérimentales de l'aérodynamique. Suisse Aérienne, 3e année, 1921, No. 8, Berne, pp. 114-116.

- Die Bedeutung des Staudruckmessers für die Sicherheit, des Fluges.

Suisse Aérienne, S' année, No. 3, Berne, 1921, pp. 34-35.

- Die Bordinstrumente der Verkehrsflugzeuge.

Hl. Flug-Woche, 3. Jahrg., 1921, Leipzig, pp. 185-1S8, 225-22S, ill.

—■— Existenzfragen.

Suisse Aérienne, 2= année, Nos. 9-10, (mai 1920), Berne, pp. 136-137, ill. Flugwelt, 2. Jahrh., 8. Heft (14. April 1920), Leipzig, pp. 229, 232-233.

- Ist der Freiballon eine Vorschule für die Führung anderer Luftfahrzeuge?

Suisse Aérienne, 3e année, 1921, No. 24, Berne, pp. 347-348.

- Das motorlose Flugzeug.

Suisse Aérienne, 3° année, 1921, No. 14, Berne, pp. 203-204; No. 15-16, pp. 227-229.

- Die neuen techn. Abnahmebedingungen für Verkehrsflugzeuge in Frankreich.

Suisse Aérienne, 3« année, No. 2 (févr. 1921), Berne, pp. 22-23.

- Uber die Verwendung von Düsen zur Arbeitsleistung.

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 10 (31. Mai 1920), Berlin, pp. 159-162.

—■— See Goldenberg, V.: Les données expérimentales de l'aervdynamique: Anhang.

Guérin, René. See Guillet, Léon: Rapport présenté par M, Léon Guillet, au nom du Comité des Arts Chimiques, sur l'index méthodique des travaux et essais exécutés de 1915 à 1918, aux de laboratoires de l'aéronautique de Chalais-Meudon, de M. René Guérin.

—■— Le laquage des bois.

La Nature, 4Sé année 2« sem., No. 2416 (24 juil. 1920), Paris, pp. 55-60, ill.

Guolielminetti. Les hautes altitudes et l'organisme humain.

Suisse Aérienne, 2« année, Nos. 9-10 (mai 1920), Berne, pp. 131-133, ill.

—— More about high flying.

Scient. Amer. Monthly, Vol. 2 (July 1920), New York, pp. 70-73, diagr.

- La vie et les voyages aux très hautes altitudes; cabines closes, à pression

constante, pour ballons et avions.

Génie Civil, Vol. 76 (mar. 20, 1920). Paris, pp. 288-292, ill., diagr.

Same abr. (more about high flying). Scient. Amer. Monthly, Vol.2 (July 1920),New York, pp. 70-73.

Guiana. See Dutertre, C: Les transports aériens en Guyane Française.

- See Photography: Aerial photography in British Guiana.

Guide lights for airman.

Engineer, Vol. 131, No. 3404 (Mar. 25, 1921), London, p. 317.

Guidoni, A. Aerodynamics at very high speed.

Aerial Age, Vol. 13, No. 2 (Mar. 21,1921), New York, pp. 31-32.

GuiDONi, A. Amazing progress of aviation.

Independent, Vol. 102 (June 19, 1920), New York, pp. 386-387, ill., diagr.

- The gliding surface of seaplane floats.

Aviation, Vol. S, No. 9 (June 1, 1920), Now York, pp. 363-365, diagr.

- The Italian semirigid airship "Roma."

U. S, Air Sendee, Vol. 3, No. 5 (June 1920), New York, p. 29, 111.

- A new system of bombing tests.

Aviation, Vol. 11, No. 11 (Sept. 12,1921), New York, p. 307.

What has been done and is being done in Italian aeronautics. U. S. Air Service, Vol. 3, No. 3 (Apr. 1920), New York, pp. 34,14.

Guinea. See Idrac, P.: Soaring flight in Guinea.

Guillet, Léon. Comité des Arts Chemiques. Rapport présenté par M. Léon Guillet, au nom du Comité des Arts Chimiques, sur l'index méthodique des travaux et essais exécutés, de 1915 à 1918, aux laboratoires de l'aéronautique de Chalais-Meudon, de M. René Guérin.

Bull. Soc. Enc. Ind. Nat., 119 année, T. 132, No. 2 (rnars-avr. 1920), Paris, pp. 157-158.

Guitton. Les appareils marins d'aviation.

Aéronautique, 3e année, No. 25 (juin 1921), Paris, pp. 229-231, ill.

Gundry, P. G. The effect of temperature and altitude of aerodrome in the takin/ off of aeroplanes.

Aéron. Journ., Vol. 25, No. 126 (June 1921), London, pp. 290-300, ill., tabl.

Gun sights. See United States Air Service (War Department): Handbook on the airplane machine-gun sights. McOook Field, Dayton, Ohio.

Guns. See Military aeronautics: Resistance on aeroplane guns.

Gurdon, J. E. See Neumann, Georg Paul: German air force in the great war . . . translated by J. E. Gurdon.

Guyane. See France: L'organisation de lignes aériennes en Guyane française.

Guynemer, Georges. See Goubert, Louis: Hommage d'un fantassin à Georges Guynemer.

Gyro compass. See Grouse, G. B.: Principles of the gyro compass.

Gyro gauges. See Gradenwitz, Alfred: German gyro gauges. The Anschutz aircraft horizon.

Gyrostatic compass. See Brown, S. G. : Gyrostatic compass.

- See Compass: Gyrostatic compass; a nonmathematical treatment.

H.

H. 4. A novel test on a De H. 4.

Flight, No. 029, Vol. 13, No. 2 (Jan. 13, 1921), London, p. 29

H., B. D. Aviation in the lower Adriatic. August, 1916, to October, 1917.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, Nos. 7-8 (Feb. 18-25, 1920), London, pp. 304376, 428-434, ill.

Haacke. Der Haacke-Flugzeugmotor.

111. Flug-Woche, 3. Jahrg., 5. Helt (2. März 1921), Leipzig, pp. 83-84. ill.

■- The Haacke 30-horsepower aero engine.

Flight, No. 641, Vol. 13, No. 14 (Apr. 7,1921), London, pp. 239-210, ill.

Haacke. The Herman Haacke motor.

Aerial Age, Vol. 12, No. 24 (Feb. 21,1921), New York, p. 612, ill., diagr.

Haas, A. Einführung in die theoretische Physik.

Erster band. Leipzig, Veit & Co., 1919, pp. vii, 384, ill.

Reviewed in: Zeitsehr. Flugt. Motorluftsch., 11. Jahrg., Heft 5 (15. März 1920), Berlin, p. 73.

•-■ Einführung in die theoretische Physik mit besonderer Berücksichtigung ihrer

modernen Probleme.

Zweites Band. Berlin und Leipzig, Walter de Gruyter & Co., 1921, pp. vi, 286, ill. Reviewed in: Zeitsehr. Flugt. Motoruptsch., 12. Jahrg., 17. Heft (15. Sept. 1921), München, pp. 264-265.

Hackett, A. G. See Hackett, W. W., and A. G. Hackett: Steel tubes, tube manipulation, and tubular structures for aircraft.

Hackett, W. W., and A. G. Hackett. Steel tubes, tube manipulation, and tubular structures for aircraft.

Birmingham, England, Accles & Pollock (Ltd.), 1920.

Haedee, H. Kleines Hilfsbuch für Flieger und Freunde des Flugwesens, von R. Thebis und Dr. H. Haeder.

Wiesbaden, pp. 48.

Noted in Zeitsehr. Flugt. Motorluftsch., 11. Jahrg.. Heft 1 (15. Jan. 1920), Berlin, p. 9.

Haedicke, H. Die Zerlegung der Kräfte bei schiefem Winddruck und der dienessche Höcker.

Zeitschrift des Vereines deutscher Ingenieure, Vol. 63, No. 40 (Okt. 4,1919), pp. 933-985, figs.

Haeïner. Flugzeugkutscher oder Luftkapitän?

Luftweg, Nr. 3-4 (27. Jan. 1921), Berlin, pp. 20-21.

Haegin, Fritz J. Wirtschaftsfragen der Zivilaviatik.

Suisse Aérienne, 2» année, No. 8 (25 avril 1920), Berne, pp. 121-122.

Haehnelt, W. Aufgaben, Ziele, Organisation der Luftfahrtvereine. Flugwelt, 2. Jahrg., 2. Heft (4. Feb. 1920), Leipzig, pp. 65-66.

Haenisch, G. Skizzenbuch für Flugzeugkonstrukteure, von W. Weikert un G. Haenish.

Berlin, R. C. Schmidt & Co., 1920, pp. 19, ill.

Reviewed in: Zeitsehr. Flugt. Motorluftsch., 11. Jahrg., Heft 13 (15. Juli 1920), Berlin, p. 194.

Haggvist, F. E. Aerial photography and its applications to modern industries. Aerial Age, Vol. 13, No. 17 (July 4,1921), New York, pp. 391-392.

Hague, B. See Griffith, A. A., and B. Hague: On the shape of propeller blades.

- See Griffith, A. A., and B. Hague: Preliminary report on the twisting of propeller blades.

- See Griffith, A. A., and B. Hague: Second report on the twisting of propeller

blades.

Hahn, Hanns. Die internationale Olympia-Ausstellung.

Flugwelt, 2. Jahrg., 16 Heft (4. Aug. 1920), Leipzig, pp. 427-434, ill. Types of airplanes.

Haiti. Air mail in Haiti.

Aviation, Vol. 9, No. 10 (Nov. 22, 1920), New York, p. 327.

Hall, Charles S. A revolution in flying.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 15 (Apr. 13,1921), London, pp. 356-358.

Hall, Holworthy. An interview with the editors.

TJ. S. Air Service, Vol. 2, No. 6 (Jan. 1920), New York, pp. 19-21, ill.

44439—25-13

Hall, James Norman and Charles Bernard Nokdhopf. The Lafayette Flying Corps.

Boston, Houghton, Mifflin Co., 1920, pp. 875, ill.

Ballett, George E. A. Ignition from the engineman's viewpoint. Aviation, Vol. 9, No. 11 (Nov. 29,1920), New York, pp. 354-356.

Journal, Society Automotive" Engineers, Vol. 7 (Nov. 1920), New York, pp. 475-479, ill.

- Superchargers and supercharging engines.

Aviation, Vol. 7, No. 12 (Jan. 15,1920), New York, pp. 533-536.

Halliwell, F. W. The erection and trueing up of aeroplanes.

London, The St. Martin's Publishing Co. (Ltd.), 1920, pp. viii, 11-106, ill. Flight Library, Vol. 1.

- Rigging; the erection and trueing up of aeroplanes.

London, Flight, 1920.

Cited in: Aeron. Journ., Vol. 25, No. 121 (Jan. 1921), London, p. 2.

Halverson, H. A. Rise of civil aviation.

Journal of Electricity, Vol. 45 (Oct. 15, 1920), San Francisco, pp. 370-374.

Hamburg. Hamburg als Luftverkehrshafen.

Luftweg, Nr. 51-52 (29. Dez. 1921), Berlin, pp. 356.

Hammatt, Richard F. Winged patrols for our expansive forests. Scient. Amer., Vol. 122 (Apr. 10, 1920), New York, p. 387, ill.

Hammer, O. Die Praxis des Fliegens . . . Berlin, Gustav Braunbesk.

Reviewed in: Flugwelt, 2. Jahrg., 10. Heft (12. Mai 1920), Leipzig, p. 300.

Hammond, E. V. Pioneers of British aviation—XLII: Mr. E. V. Hammond. Aeronautics, Vol. 18, No. 346 (June 3, 1920), London, p. 430, ill.

Hammondsport. Hammondsport again aeronautic center.

Aerial Age, Vol. 11, No. 19 (July 19, 1920), New York, pp. 646, 659, ill.

Hanby, Wilfred. Metals in aircraft construction.

London, The Standard Air Press (Ltd.), 1920, pp. 112.

Handasyde. The Handasyde passenger monoplane.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 15 (Oct. 12,1921), London, pp. 321-322, diagr.

Handasyde, G. H. Pioneers of British aviation—XL: Mr. G. H. Handasyde. Aeronautics, Vol. 18, No. 343 (May 13, 1920), London, p. 375.

Handasyde (Ltd.). See Great Britain: Modern British aircraft.

Handley-Page. La aviación en la América del Sur.

Aire, Mar y Tierra, año 2, Núm. 19 (oct. 1920), Madrid, pp. 595-596, ill.

Handley Page, Frederick. Commercial aviation, its development since the war and its scope in the future.

American Machinist, Vol. 52, No. 14 (Apr. 1,1920), New York, pp. 753-754.

- Developments in aircraft design by the use of slotted wings.

Flight, No. 678, 679, Vol. 13, No. 51, 52 (Dec. 22, 29, 1921), London, pp. 844-846, 860-861, ill., tables.

- Five-seater Handley Pages.

The Aeroplane, Vol. 20, No. 25 (June 22, 1921), London, p. 577.

- Forecast what skies will look like in 30 years.

The Naviator, Vol. 1, No. 7 (Mar. 27, 1920), Pensacola, Fla., pp. 1, 8.

- The German Lachmann slotted aerofoil. Göttingen tests on a model.

Flight, No. 641, Vol. 13, No. 14 (Apr. 7, 1921), London, p. 242, ill., diagr.

- A German rival of the Handley-Page wing.

Aviation, Vol. 10, No. 6 (Feb. 7,1921), New York, p. 179, diagr.

Handley Page, Frederick. A German theory of the Handley-Page wing.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 5 (Feb. 2,1921), London, pp. 115-116.

- The H. P. wing and Germany.

Flight, No. 629, Vol. 13, No. 2 (Jan. 13,1921), London, p. 26, ill.

- The Handley-Page aircraft deal.

Flight, Vol. 12, No. 18 (Apr. 29, 1920), London, pp. 471-473, ill.

- Das Handley-Page-Fügel-Patent.

Zeitschr. Flugt. Motorluftseh., 12. Jahrg., 15. Heft (15. Aug. 1921), München, pp. 232-234.

- The Handley-Page patent.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 2 (Jan. 12,1921), London, pp. 42-13, diagr.

- Handley-Page records.

Aeronautics, Vol. 19, No. 355 (Aug. 5, 1920), London' p. 115; Vol. 20, n. s., No. 3S2 (Feb. 10, 1921), p. 95.

- Handley-Page type W. 8.

Aviation, Vol. 7, No. 12 (Jan. 15, 1920), New York, p. 542, ill.

- Per Handley-Page van Parijs naar Londen.

Avia, 8e jaarg., No. 7 (15 Mei 1920), Rotterdam, pp. 83-85, ill.

■- The Handley-Page wing.

Aeronautics, Vol. 19, No. 367 (Oct. 28, 1920), London, p. 312, diagr; Vol. 20, n. s., Nos. 334386 (Feb. 24-Mar. 10,1921), pp. 125, 128-130, 153-154, 167-168.

Aer. Eng. Suppl. The Aeroplane, Vol, 20, Nos. 8, 9 (Feb. 23, Mar. 2, 1921), London, pp. 184, 205-212.

Aerial Age, Vol. 13, Nos. 2, 4 (Mar. 21, Apr. 4,1921), New York, pp. 37-38; 82-84. Aeron. Journ., Vol. 25, No. 126 (June 1921), London, pp. 263-289, ill.

Aviation, Vol. 10, No. 14 (Apr. 4,1921), New York, pp. 427-430, diagr; Vol. 11, No. 8 (Aug. 22, p. 230.)

Flight, Vol. 12, No. 44 (Oct. 28, 1920), London, pp. 1123-1125, ill; No. 635, Vol. 13, No. 8 (Feb. 24, 1921), pp. 130-137, ill., diagrs.

- The Handley Page wing patent.

Aviation, Vol. 9, No. 6 (Oct. 15, 1920), New York, pp. 197-198, diagr.

- Mr. Handley Page on German soaring tests.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 10 (Sept. 7,1921), London, p. 220.

- A map of Europe, prepared by Messrs. Handley Page (Ltd.), showing the air

services actually in operation or contemplated.

Flight, Vol. 12, No. 39 (Sept. 23, 1920), London, p. 1026, map.

•- Der neue Handley-Page Flügel.

Flugwelt, 2. Jahrg., 25. Heft (8. Dez. 1920), Leipzig, pp. 616-619, ill.

- A new Handley Page.

The Aeroplane, Vol. 20, No. 17 (Apr. 27,1921), London, p. 404.

- New Handley Page aeroplane wing.

Engineer, Vol. 130 (Oct. 29, 1920), London, p. 421, diagr.

- The new Handley Page monoplane. First machine designed for slotted wing.

Flight, No. 644, Vol. 13, No. 17 (Apr. 28, 1921), London, p. 295.

- The new Handley-Page wing.

Aerial Age, Vol. 12, No. 9 (Nov. 8, 1920), New York, p. 250, ill., diagr. Aviation, Vol. 9, No. 9 (Nov. 15 1920), New York, p. 288, diagr.

- Pioneers of British aviation—XXV: Mr. F. Handley Page, F. R. Ae. S.

Aeronautics,-Vol. 18, No. 326 (Jan. 15, 1920), London, pp. 58-59, ill.

- Revolutionary improvements in aeroplane construction announced by Handley

Page.

Aerial Age, Vol. 11, No. 3 (Mar. 29, 1920), New York, pp. 80, 88.

Handley Page, Frederick. A revolution, in Handley Page transport. The Aeroplane, Vol. 20, No. 28 (June 29,1921), London, p. 582.

- The suspension of Handley-Page transport.

The Aeroplane, Vol. 20, No. 9 (Mar. 2,1921), London, p. 200.

- See Brewer. Griffith: The Langley machine and the Hammondsport trials.

-• See Commercial aviation: Europe's progress in commercial aviation. Handley-Page map of European air routes.

-■ See Goldenberg, V.: Note sur les ailes de Handley-Page.

-• See Great Britain: Modern British aircraft.

- See Hankin, E. H.: The problem of soaring flight . . . Introduction by F.

Handley Page.

- See Lachmann, G.: Ein Vortrag von Handley-Page . . .

■-• See Marco Polo: An immediate application of slotted aerofoils. Their use as

interplane ailerons.

- See Sayers, W. H.: Burbling, and the Handley Page wing.

- See Sayers, W. H.: Concerning Handley-Page and other wings.

-■ See Wings: The Handley-Page wing.

.- See Wings: More H. P. wing experiments.

Hangars. L'aéroplace de Cointrin (Genève).

Suisse Aérienne, 2« année, No. 13 (10 juil. 1920), Berne, pp. 196, ill.

- Army airship hangars.

Aircraft Journal, Vol. 6, No. 16 (Apr. 17, 1920), New York, pp. 9-10, ill.

- French airship sheds built of framed concrete.

" Engineering News-Record, Vol. 83, No. 15 (Oct. 9, 1919), pp. 702-703, figs.

-• Un hangar de dirigeable a toit mobile.

Aéronautique, 2' année, No. 18 (nov.-déc. 1920), Paris, pp. 258-259.

-• The Lakehurst hangar is nearing completion.

Aviation, Vol. 9, No. 12 (Dec. 6, 1920), New York, p. 388, ill.

- Luftschiffhallen.

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 5 (15. März 1920), Berlin, pp. 77-78.

- New type of door at Reno hangar.

Aeronautics, Vol. 20, n. s., No. 402 (June 30, 1921), London, p. 480, ill.

- See Airships: Airship sheds and their erection.

- See Hetzer, Otto: Neuzeitliche Flugzeughallen aus Holz.

- See Lakehurst, N. J.: Navy builds great hangar for new type of dirigible.

- See Lakehurst, N. J.: United States Navy record breaker. Largest dirigible

hangar in the world now building at Lakehurst, N. J.

Hankin, E. H. The problem of soaring flight . . . Introduction by F. Handley-Page.

Proc. Cambridge Philosophical Society, Vol. 20, Pt. II (Jan. 1921), Cambridge University Press, pp. 219-227. Nature, Vol. 106, No. 2668 (Dec. 16, 1920), London, p. 518.

Hankins, G. A. Report on tests made on various Australian timbers to determine their suitability for use in the construction of aeroplanes.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 970-973, ill.

Hankinson, R. L. See Boulton, B. C, and R. L. Hankinson: Properties of woods at 10 per cent moisture.

Hannen. A novel carburetor.

Aerial Age, Vol. 13, No. 22 (Aug. 8, 1921), New York, p. 522.

Haneez, G. Un paradoxe d'aérodynamique.

La Conq. l'Air, 3« année, No. 5 (1 mars 1920), Bruxelles, p. 56.

Hanriot. Hanriot aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 15 (Apr. 13,1921), London, pp. 352-354, diagr.

——- Les nouveaux avoins Hanriot.

Aéronautique, 3S année, Nos. 19-20 (janv. 1921), Paris, pp. 292-293, ill.

- Two new Hanriot airplanes.

Aviation, Vol. 11, No. 13 (Sept. 26, 1921), New York, p. 373.

Hanriot, René. Les nouveaux avions René Hanriot.

Aéronautique, 3« année, No. 30 (nov. 1921), Paris, pp. 440-442, ill.

Hanscom, Clarence D. The new Glenn Martin high lift wing.

Aviation, Vol. 11, No. 11 (Sept. 12, 1921), New York, pp. 316-317.

- Present tendencies in airplane design.

Aviation, Vol. 11, No. 21 (Nov. 21,1921), New York, pp. 597-598.

- Some experiments on thick wings with flaps.

Aerial Age, Vol. 13, No. 4 (Apr. 4,1921), New York, pp. 79-82.

Flight, No. 645, Vol. 13, No. 18 (May 5,1921), London, pp. 310-314, diagrs.

Journ. Soc. Automotive Engineers, Vol. 8, No. 3 (Mar. 1921), New York, pp. 271-276, diagr.

Hansen, N. Englische Luftpostperspektiven.

Flugwelt, 2. Jahrg., 5. Heft (3. März 1920), Leipzig, pp. 138-140. Luftweg, Nr. 8-9 (4. März 1920), Berlin, pp. 7-9, ill.

- Flugökonomie und Herzmuskelleistungen der Vögel.

Flug, Sondernummer (Dez., 1920),Wien, pp. 111-112.

- Die Flugverkehrsaussichten in Australien.

Flugwelt, 2. Jahrg., 3. Heft (4. Febr. 1920), Leipzig, pp. 67.

- Das Flugzeug im dienste der Forscher.

Flugwelt, 2. Jahrg., 6. Heft (17. März 1920), Leipzig, pp. 170-172, ill.

•- Luftreisebilder vom Kairo-Kapstadtfluge.

Flugwelt, 2. Jahrg., 9. Heft (28. April 1920), Leipzig, pp. 269-271, ill.

- Neue Fortschritte im drahtlosen Telefondienst und Handelsluftverkehr.

Flugwelt, 2. Jahrg., 9. Heft (28. April 1920), Leipzig, pp. 264-265.

■—- Dan Problem des Nachtflugverkehrs.

Flugwelt, 2. Jahrg., 9. Heft (28. April 1920) Leipzig, pp. 26S-209.

Harcourt, J.d' L'aviation militaire et l'accident.

Aéronautique, 3= année, No. 26 (juil. 1921), Paris, pp. 289-290.

Hardin. Hardin package parachute at world series.

Aviation, Vol. 11, No. 18 (Oct. 31,1921), New York, p. 514.

Harding, Warren G. Aeronautics. Message of the President of the United States transmitting seventh annual report of the National Advisory Committee of Aeronautics, 1921.

Senate, 67th Cong., 2d session, Doc. No. 91. Dec. 7,1921.

■- Aviation report of President to Congress. Views of minority of special committee overruled in report to President.

Aviation, Vol. 10, No. 18 (May 2, 1921), New York, pp. 552-558.

- President Harding and aeronautics.

Flying, Vol. 10, No. 4 (May 1921), New York, p. 138.

Harding, Warren G. President Harding favors united air service. Aviation, Vol. 11, No. 4 (July 25, 1921), New York, p. 96.

—— President Harding indorses National Advisory Committee policy. U. S. Air Service, Vol. 5, No. 4 (May 1921), New York, pp. 11-13, ill.

—— President Harding sends special message on aviation. United States, he asserts, should be foremost.

TJ. S. Air Service, Vol. 6, No. 5 (Dec. 1921), New York, p. 16.

- The President on aviation. From the address to the 67th Congress, Apr. 12,

1921.

Aviation, Vol. 10, No. 17 (Apr. 25, 1921), New York, p. 522.

- See Civil Air Bureau: President Harding urges civil air bureau.

Harlaut. L'évolution des moteurs d'aviation allemands.

Aéronautique, 3e année, No. 27 (août 1921), Paris, pp. 310-315, ill.

Harper, D. R., 3d. See Gage, V. R., S. W. Sparrow, and D. R. Harper: Comparative power properties of alcogas and aviation gasoline.

- See Gage, V. R., S. W. Sparrow, and D. R. Harper, 3d: Comparison of alcogas

aviation fuel with export aviation gasoline.

—— See Gage, V. R., S. W. Sparrow, and D. R. Harper: Comparison of alcogas aviation fuel with petrol.

- See Dickinson, H. C, W. S. James, E. W. Roberts, V. R. Gage, and D. R.

Harper, 3d: Power characteristics of aviation gasolines.

Harries, G. W. Laws for air travel.

Journ. Soc. Automotive Engineers, Vol. 7, No. 5 (Nov. 1920), New York, p. 474.

Harries, Hy. Some local winds of the East Indian seas.

Great Britain, Meteorological office, Monthly meteorological charts East Indian seas, June 1920.

Harris, R. G. Forces on a propeller due to sideslip.

Tech. Bept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 430-439, diagr.

- Graphical solution of stability biquadratic.

Tech. Kept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 230-253.

- See Lindemann, F. A., H. Glauert, and R. G. Harris: The experimental and

mathematical investigation of spinning.

Harrow, Benjamin. Contemporary science; with an introduction. New York, Boni & Liveright, 1921, pp. 9-253. Modern library of the world's best books.

Harry, D. Fire eagles; how army planes and pilots keep check on forest fires. Sunset, Vol. 45 (Sept. 1920), San Francisco, pp. 104-105, ill.

Hart. Hart reversible pitch propeller.

Aeronautics, Vol. 20, n. s., No. 385 (Mar. 3,1921), London, p. 150, ill. Aviation, Vol. 10, No. 3 (Jan. 17,1921), New York, pp. 79-80, ill.

Hart propeller. Modified Hart adjustable-pitch propeller manufactured by American Propeller & Manufacturing Co. (Destructive whirling test No. 257.)

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 11 (Mar. 25, 1920), Washington, Government Printing Office, pp. 20, ill.

Hartford. Hartford aerial meet.

Aerial Age, Vol. 13, No. 15 (June 20, 1921), New York, pp. 340-341, ill.

Hartney, Harold E. The Air Service and civil aeronautics.

Aviation, Vol. 10, No. 10 (May 7, 1921), New York, pp. 307-309.

Hartney, Harold E. A glimpse at our airways of the future.

U. S. Air Service, Vol. 5, No. 6 (July, 1921), New York, pp. 14-17.

- How United States can save $452,000,000. The economy of airplanes as compared to battleships.

Aviation, Vol. 10, No. 19 (May 9,1921), New York, pp. 598-599.

—— Memorial Day address delivered at the National Cemetery, Grafton, W. Va. U. S. Air Service, Vol. 5, No. 5 (June 1921), New York, pp. 27-28.

- Notes on running Mono-Soupape engine.

Aircraft Journal, Vol. 6, No. 8 (Feb. 21, 1920), New York, p. 5, ill.

- On the problems of commercial aeronautics.

Flying, Vol. 9, No. 10 (Nov. 1920), New York, pp. 638-640, ill.

- See Pulitzer trophy: Army flier winner of America's greatest race. Lieutenant

Moseley and Captain Hartney, first and second in contest for Pulitzer trophy at Mitchel Field.

Hartwell, F. E. Surface winds and lower clouds.

Monthly Weather Review, Vol. 48. No. 11 (Nov. 1920), Washington, D. C.

Hartz, See Bellinger and Hartz: Commander Bellinger and Colonel Hartz ask Senate investigation of conspiracy against them.

Haslett, Elmer. Luck on the wing; thirteen stories of a sky spy. New York, E. P. Dutton Co., 1920, pp. xvii, 303, ill.

Hasset, A. Ueber die Verwendbarkeit leichter Einsitzer auf Riesenflugzeugen. Luftweg, Nr. 8-9 (4. März 1920), Berlin, pp. 6-7, ill.

Hatjby, Wilfred. Metals in aircraft construction. London, The Standard Air Press, 1920.

Hausen, F. D. Frontflieger einst und jetzt.

Mitt. Oesterr. Aero-Clubs, 5. Jahrg. Nr. 4 (1. April 1918), Wien, pp. 118-120.

Havana. See Commercial aeronautics: Flying boat service from Key West to Havana.

- See Commercial aeronautics: Key West-Havana air line inaugurated.

- See Commercial aeronautics: Key West-Havana passenger air line.

Havelock, T. H. The stability of fluid motion.

Proc. Roy. Soc, Ser. A. Vol. 98, No. A694 (Mar. 3,1921), London, pp. 428-437.

Haviland. See De Haviland.

Haviland, G. de. De Haviland on civil aviation.

Flying, Vol. 10, No. 1 (Feb. 1921), New York, p. 24.

Haviland Aircraft Co. The D. H. cantilever monoplanes.

Flight, No. 637, Vol. 13, No. 10 (Mar. 10,1921), London, p. 179.

Haw, Jakob. Sonderbauarten von Luftschrauben.

Zeitsehr. Flugt. Motorluftschr., 12. Jahrg., 15. Heft. (15. Aug. 1921),München, pp. 225-227, ‘11.

Hawa. See Dierfeld, Benno R.: The Hawa commercial triplanes.

- See Hildesheim, Erik: "Hawa" civil aircraft.

Hawaii. See Carriel, Cruse: Hawaii from the air. --See H. 4: A novel test on a De H. 4.

Hawk. See Clough, G. E.: Mystery of the soaring hawk.

—— See Landon, W. G.: That hawk again.

Hawker, Harry. The late Harry Hawker.

The Aeroplane, Vol. 21, No. 3 (July 20, 1921), London, p. 64.

Hawker, Harry. Mort de l'aviateur Harry Hawker.

L'Aérophilc, 29» année, Nos. 13-14 (lrr-15 juil. 1921), Paris, p. 220.

- The passing of Harry Hawker.

Plight, No. 656, Vol. 13, No. 29 (July 21,1921), London, pp. 494-495.

Hayachi, Keucht. Fünfstellige Tafeln der Kreis- and Hyperbelfunktion, sowie der Funktionen e* und e_x mit den natürlichen Zahlen als Argument.

Zeitschr. Flugt. Motorluftsch, 12. Jahrg., 12. Heft (30. Juni 1921), München, p. 183.

Hayford, John Fillmore. What should be done to increase the civil use of airplanes?

Journ. Western Soc. Engineers, Vol. 25 (Apr. 5, 1920), Chicago, pp. 238-252.

Haynes, Robert E., and Ralph M. Like. Aerial mapping. Application of aerial photography to commercial use.

The Ace, Vol. 2, No. 6 (Jan. 1921), Los Angeles, pp. 8-9.

Hazell. Hazell's annual and almanack. London, 1921.

Hazeltine, R. H. Aeroplane observation of artillery Are against ships. Journ. U. s. Artillery, Vol. 52, No. 1 (Jan. 1920), pp. 55-65, figs.

Head, Henry. See Great Britain. Privy Council. Medical Research Council: The medical problems of flying . . .

Heald, Charles Brehmer. See Great Britian. Privy Council. Medical Research Council: The medical problems of flying . . .

Heald, R. H. Performance of a vane-driven gear pump.

Technical Notes, National Advisory Committee for Aeronautics, No.61, Sept. 1921, Washington (mim.), pp. 10, diagrs. Aerial Age, Vol. 14, No. 4 (Oct. 3,1921), New York, pp. 81-83, 90, diagr.

Heat balloons. See Brown, F. C. : How to make a heat balloon.

Heat treating. See Black, Archibald: The heat treating of brazed fittings for aircraft.

- See Gallaudet: Gallaudet electric heat-treating furnace.

Hebbert, C. M. See Warner, Edward P., F. H. Norton, and C. M. Hebbert: The design of wind tunnels and wind-tunnel propellers.

Hébrard, Léo. Le bombardement nuit et les problèmes de la navigation aérienne. Aéronautique, 2« année, No. 16 (sept. 1920), Paris, pp. 158-163, ill.

- Traité pratique de navigation aérienne.

Aéronautique, 3« année, 1921, Paris, pp. 81-86, 121-125, 161-163 , 201-203, 241-242, 281-285, 321-325, 361-365, 401-408, 453-461, 509-516, ill.

Hecter. A comparison of hecter fuel with export aviation gasoline.

Journ. Soc. Automotive Engineers, Vol. 7, No. 1 (July 1920), New York, pp. 110-111, charts.

- See Dickinson, H. C, V. R. Gage, and S. W. Sparrow: Comparison of hecter

fuel with export aviation gasoline.

-■ See Fuel: Comparison of hecter fuel with export aviation gasoline.

- See Fuel: Hecter fuel compared with export aviation gasoline.

Heenan-Froude. The Heenan-Froude dynamometer.

Flight, No. 631, Vol. 13, No. 4 (Jan. 27,1921), London, p. 65, ill.

Heffner, R. J. Telephoning from the air.

Journal of Electricity, Vol. 44 (Apr. 1, 1920), San Francisco, pp. 307-310, ill., diagr.

Hegener, Henri. De Kaïro-Bagdad luchtlijn.

Vliegveld, 5e jaarg., 1921, Amsterdam, pp. 305-307, 317-318.

Hegener, Henri. Van over de grenzen.

Vliegveld, 5e jaarg., 1921, Amsterdam, pp. 278-280, 292-294, 315-317, 340-341, 354-357, ill.

Heidelberg, Ing. v. Measurements of rudder moments on an airplane during flight.

Technical Notes, National Advisory Committee tor Aeronautics, No. 38, Jan. 1921, Washington (mim.), pp. 23, diagrs.

HeimstXdt, Oskar. Ueber die seitliche Stabilität.

Hug, Jahrg. 1920, Nr. 5 (Mai), Wien, pp. 45-48, ill.

Heineoke. Der Heinecke-Fallschirm.

111. Fing-Woche, 3. Jahrg., 15. Heft (20. Juli 1921), Leipzig, pp. 307-308.

Heinecke, Otto. Der Spruch des Preisgerichts.

Aut. Fhigv., Nr. 10 (Okt. 1921), Berlin, pp. 408-411.

Heinrich, A. O. An analysis of soaring flight.

Aerial Age, Vol. 14, No. 15 (Dec, 19,1921), New York, p. 353.

Held. Der wiener Flughafen in Aspern.

Flug, Sondernummer (Dez. 1920), Wien, pp. 30.

Held, Theodor. Stellungnahme zu der durch die Entente hervorgerufen Lage der österreichischen Luftfahrt.

Flug, 8. Jahrg., Nr. 9-10 (1. Mai 1921), Wien, pp. 18-19.

Heldt, P. M. Dutch passenger-carrying monoplane.

Aut. Ind. Vol. 45, (Dec. 8,1921), New York, pp. 1113-1114, ill.

- Ignition is discussed by the metropolitan section, S. A. E.

Aut. Ind. Vol. 43 (Sept. 23,1920), New York, pp. 630-631.

Helicoplane. L'hélicoplane.

Vie Aérienne, No. 164 (1« janv. 1920), Paris, p. 860.

Helicopter. Concerning helicopters.

Aeronautics, Vol. 20, n. s., No. 398 (June 2,1921), London, p. 385.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 10 (Mar. 9,1921), London, p. 232; No. 15 (Apr. 13), p. 358.

- European developments in helicopters.

Aviation, Vol. 10, No. 16, (Apr. 18,1921), New York, pp. 492-495, ill., diagr.

- The helicopter.

Journ. Soc. Aut. Eng., Vol. 8, No. 2 (Feb. 1921), New York, p. 126. Aeroplane vs. Helicopter. Possible line of thought. Scient, Amer., Vol. 121 (Dec. 20,1919), New York, p. 626.

—r- Helicopter experiments.

Aeronautics, Vol. 18, No. 329 (Feb. 5, 1920), London, p. 120, ill.

--Helicopter flight.

Aerial Age, Vol. 14, No. 12 (Nov. 28, 1921), New York, p. 280.

- The helicopter in England.

Aerial Age, Vol. 13, No. 17 (July 4, 1921), New York, p. 400.

- The helicopter in Europe.

Aerial Age, Vol. 12, No. 17 (Jan. 3,1921), New York, p. 435.

- Helicopter machine (24/5/21).

Aeronautics, Vol. 20, n. s., No. 398 (June 2,1921), London, p. 399.

- L'hélicoptère Oemichen.

Aéronauticure, 3« année, No. 24 (mai 1921), Paris, pp. 213-214, ill.

- Helicopters and aeroplane helicopters.

Aerial Age, Vol. 13, No. 16 (June 27, 1921), New York, p. 374.

•-• Helicopters and parachutes.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 19 (May 11,1921), London, p. 446.

Hedicoptek. Le premier vol en hélicoptère libre monté.

La Nature, 49« année, 1" sem., No. 2444 (5 tévr. 1921), Paris, p. 93. Flight of M. Oehmichen.

- Recent European developments in helicopters.

Technical Notes, National Advisory Committee for Aeronautics, No. 47, Apr. 1921, Washington (mim.), pp. 14, ill.

- See Bateman, H.: Stability of the parachute and helicopter.

- See Beach: The Beach helicopter.

- See Berliner: The new Berliner helicopter.

- See Bothezat, G. dei: The actual state of the helicopter problem.

- See Brennan, Louis: The Brennan helicopter.

- See Crocker, F. B.: The Hewitt-Crocker helicopter.

- See Damblanc: The Damblanc helicopter.

- See Damblanc: M. Damblanc on the helicopter.

- See Damblanc: Le parachute-hélicoptère de M. Damblanc.

- See Damblanc, Louis: Les hélicoptères et les laboratoires d'essais. ,

- See Damblanc, Louis: The problem of the helicopter.

- See Fage, Arthur, and H. E. Collins: Some experiments on helicopters.

- See Gaulois, G.: Man-sized helicopter that leaves the ground with full load.

- See Gerhardt, W. F.: Technical discussion of helicopter progress.

- See Hoffmann, A. M.: New helicopter design promising.

- See Huguet, L.: Les hélicoptères.

- See Karman: Tests made with captive helicopters.

- See Karman, Th. v.: Neuere Schraubenfliegerprojekte.

- See Karman, Th. v.: Theoretische Bemerkungen zur Frage des Schraubenfliegers.

- See Karman-Petroczy: The Karman-Petroczy helicopter.

- See Lamé, M.: Vers la sécurité; hélicoptères et avions-hélicoptères.

- See Lamé, M.: Vers la sécurité; la sustentation indépendante.

- See Lamé: Hélicoptères et avions-hélicoptères.

- See Lémonon, E. H.: L'hélicoptère serait-il l'appareil aérien de l'avenir?

- See Lémonon, E. H.: The Pescara helicopter.

■- See Low, A. R.: Helicopters.

- See Malterner, S. N.: Helicopter.

- See Oehmichen-Peurgeot: The Oehmichen-Peurgeot helicopter.

- See Passat: The Passat "helicopter."

- See Passat, M. J. B.: A new helicopter.

- See Pescara.

- See Pescara: Pescara helicopter.

—— See Pishoff, de: Considerations sur les hélicoptères.

Helicopter. «See Saladin, Raymond: Étude générale sur l'hélicoptère.

- «See Shaw, Douglas: The coming of the helicopter.

- «See Skerrett, R. G.: Again the helicopter; experiments by prominent inventors

who hope to realize,this long-standing dream.

- «See Toussaint, A.: Drag or negative traction of geared-down supporting propellers in the downward vertical glide of a helicopter.

- «See Toussaint, A.: Freinage ou traction négative des hélices sustentatrice-

debrayées dans la descente plannée verticale d'un hélicoptère. ,

- «See Warner, Edward P.: The problem of the helicopter.

- «See Zurovec, W.: Der Schraubenfesselflieger Petroczy-Karman-Zurovec.

Helium5. Characteristics of helium gas.

Aeronautics, Vol. 18, No. 340 (Apr. 22, 1920), London, p. 333.

- Government seeks to locate gas containing helium.

American Gas Engineering Journal, Vol. 112 (Mar. 20,1920), New York, pp. 226-227.

- Helium.

Mining and Scientific Press, Vol. 120 (Mar. 13, 1920), San Francisco, p. 378.

- Helium a success in airship tests.

Aerial Age, Vol. 14, No. 14 (Dec. 12,1921), New York, p. 316.

-• Helium als Füllgas.

Mitt. Oesterr. Aero-Clubs, 6. Jahrg., Nr. 5 (1. Mai 1919), Wien, pp. 145, 147.

- Helium for airships.

Aerial Age, Vol. 14, No. 9 (Nov. 7,1921), New York, pp. 203, 207. Aviation, Vol. 11, No. 22 (Nov. 28, 1921), New York, p. 635.

- Helium in the British Empire.

Aeronautics, Vol. 19, No. 355 (Aug. 5, 1920), London, p. 117.

- Helium production in America.

Aeronautics, Vol. 18, No. 339 (Apr. 15, 1920), London, p. 314.

- Industrial applications of helium.

Scient. Amer. Monthly, Vol. 1 (Apr. 1920), New York, p. 330.

--■ Railroad helium repurification plant.

Aircraft Journal, Vol. 6, No. 4 (Jan. 24, 1920), New York, p. 4. Aviation, Vol. 8, No. 1 (Feb. 1, 1920), New York, p. 17.

- Trials of helium-filled airship C-7.

Aviation, Vol. 11, No. 25 (Dee. 19,1921), New York, p. 714.

—— «See Andrews, W. S.: Helium, the substitute for hydrogen in balloons and dirigibles.

- See Barr, Guy: The permeability of balloon fabrics by helium.

- «See Crehore, A. C: Planetary attraction and the helium atom.

- «See Davis, J. W.: Helium; methods evolved under the stimulus of war to be

applied to commercial production.

- «See McLennan, J. C. : Helium, its production and uses.

——■ «See McLennan; J. C: Uses of helium.

-• «See Moore, Richard B.: Helium; Tts history, properties, and commercial

development.

- «See Schuette, O. F.: Bureau of Mines report on helium.

Heller, A. Der 300 PS-Flugmotor von Benz & Cie., A. G., Mannheim.

Zcitschr. des. Ver. deutsch. Ing., Vol. 64, No. 2 (Jan. 10, 1920), pp. 35-42, figs.

- The 300-horsepower Benz aircraft engine.

Technical Notes, National Advisory Committee for Aeronautics, No. 34 (Jan. 1921), Washington (num.), pp. 10, diagrs. Aerial Age, Vol. 12, Nos. 23-24 (Feb. 14-21), New York, pp. 587-589, 607-610, diagr. Flight, No. 659, Vol. 13, No. 32 (Aug. 11,1921), London, pp. 537-542, ill.

Henderson, David. David Henderson.

The Aeroplane, Vol. 21, No. 8 (Aug. 24, 1921), London, pp. 165-166.

- Obituary. Lieut. Gen. Sir David Henderson, K. C. B., K. C. V. O., D. S. O.,

Hon. F. R. Aë. S.

Aëron. Journ., Vol. 25, No. 129 (Sept. 1921), London, pp. 465-467.

Hendy, Pv. A. Commercial aviation in Australia.

Aviation, Vol. 11, No. 2 (July 11,1921), New York, p. 49.

Henky. Die Wärmeverluste durch ebene Wände.

München, Verlag Oldenbourg, 1921, pp. 124, ill.

Reviewed in: 111. Flug-Woche, 3. Jahrg., 23. Heft (9. Nov. 1921), Leipzig, p. 479.

Hennio, R. Praktische Wetterregeln für Jedermann.

Leipzig und Wein, 1921, Franz Deuticke, pp. 59, ill.

Reviewed in: Zeitschr. Flugt. Motorluftsch, 12. Jahrg., 23. Heft (15. Dez. 1921), München, p. 342.

Henri-Paul. Les avions Henri-Paul.

Aéronautique, 3" année, Nos. 19-20 (Jan. 1921), Paris, pp. 294-295.

Henry, M. A. Varying the airplane propeller pitch.

Scient. Amer., Vol. 123 (Aug. 28, 1920), New York, p. 199,111.

Hensley, Wm. C. America and airship transportation. Col. Wm. C. Hensley's experiences on the "Bodensee" and his conclusions.

Aircraft Journal, Vol. 6, No. 3 (Jan. 17, 1920), New York, pp. 10-11, ill.

- An American on German airships.

Aeronautics, Vol. 18, No. 328 (Jan. 29, 1920), London, p. 107.

- Commercial air routes held near. Colonel Hensley, studying dirigibles in Germany, urges United States to prepare.

U. S. Air Service, Vol. 3, No. 1 (Feb. 1920), New York, p. 28.

- Hensley urges development of rigid airships.

Aerial Age, Vol. 10, No. 14 (Jan. 19, 1920), New York, pp. 539, 544.

Henslowe, Leonard. Aero dictionary. English-French: French-English. London, Benn Brothers, 1920, pp. 86.

Herbert, Alfred. Turret-lathe practice.

Machinery, Vol. 15, No. 386 (Feb. 19, 1920), London, pp. 645-652, figs; No. 389 (Mar. 11, 1920), pp. 745-750, figs.

Hercules. Hercules Airplane spark plugs.

Aircraft Journal, Vol. 6, No. 13 (Mar. 27, 1920), New York, p. 11.

Hergesell, Hugo. Männer der Luftfahrt—XII.

Flugwelt, 2. Jahrg., 20. Heft (29. Sept. 1920), Leipzig, pp. 498-499, port.

- Wettersicherung der deutschen Luftfahrt.

Luftweg, Nr. 19-20 (19. Mai 1921), Berlin, pp. 146-147.

Hermant, Paul. Deux avions de transport commercial.

Aéronautique, 3« année, No. 23 (avril 1921), Paris, pp. 167-168, ill.

Herne, E. D. C. The prosecution of Captain Herne.

The Aeroplane, Vol. 21, No. 7 (Aug. 17,1921), London, p. 144.

Hbehick, Myron T. Myron T. Herrick, president of Aero Club. Aviation, Vol. 10, No. 4 (Jan. 24, 1921), New York, p. 100, ill.

' Herrmann, H. Abbremsen von Motoren mittels Bremluftschraube.

Kleinmotorfahrzeug, 1. Jahrg., 2. Heft (14. Sept. 1921), Leipzig, pp. 393-395, ill.

- Aus der Literatur des Segelfluges.

Zeitschr. Flugt. Motorluftseh, 12. Jahrg., 14. Heft (30. Juni 1921), München, pp. 223-224.

- Brennstoffgefässe, -leitungen und Benzinpumpen.

III. Flug-Woche, 3. Jahrg., 22. Heft (26. Okt., 1921), Leipzig, pp. 450-453, ill.

- Die Flugzeuge der englischen Luftfahrt-Ausstellung 1920.

Zeitschr. Elugt. Motorluftseh., 11. Jahrg., Heft 18 (30. Sept. 1920) Berlin, pp. 261-265.

——■ Flugleistungen englischer Militärflugzeuge.

Zeitschr. Flugt. Motorluftseh., tl. Jahrg., Heft 22 (30. Nov. 1920), Berlin, pp. 331-332.

- Hubschrauber.

III. Flug-Woche, 3. Jahrg., 6. Heft (16. März 1921), Leipzig, pp. 106-107, ill.

- Ist der Luftschraubenantrieb für Kraftfahrzeuge brauchbar?

Kleinmotorfahrzeug, 1. Jahrg., 2. Heft (14. Sept. 1921), Leipzig, pp. 395-398, ill.

—— Motoren der englischen Luftfahrt-Ausstellung.

Zeitschr. Flugt. Motorluftseh., 11. Jahrg., Heft 17 (30. Sept. 1920), Berlin, pp. 265-266.

- lieber Fliegen bei ungünstiger Witterung and Wünsche des fliegenden

Personals.

Aut. Flugv., Heft 3 (30. lVtärz 1920), Berlin-Charlottcnburg, pp. 436-437, ill.

- Verstellprofile.

Zeitschr. Flugt. Motorluftseh, 12. Jahrg., 10. Heft (31. Mai 1921), München, pp. 147-154.

- Wasserlangflugzeuge.

Zeitschr. Flugt. Motorluftseh, 12. Jahrg., 6. Heft (31. März 1921), München, pp. 81-88, ill.

- Wirtschaftlichkeit ausgef ührter Verkehrsflugzeuge.

Zeitschr. Flugt. Motorluftseh., 11. Jahrg., Heft 17 (15. Sept. 1920) Berlin, pp. 252-253.

Hermann, Kurt. Männer der Luftfahrt—V: General-Direktor Kurt Herrmann. Flugwelt, 2. Jahrg., 11. Heft (26. Mai 1920), Leipzig, pp. 302-303, port.

Hersey, Mayo D. Aeronautic instruments.

Aviation, Vol. 8, Nos. 11-12 (July 1, 15, 1920), New York, pp. 437-440, 473-476, ill. Mechanical Engineering, Vol. 45, No. 5 (May 1920), New York, pp. 263-268, ill., diagr.

Hersey, Mayo D., Franklin L. Hunt, and Herbert N. Eaton. The altitude effect on air-speed indicators.

National Advisory Committee for Aeronautics, Report No. tlO, Washington, Government Printing Office, 1921, pp. 25, diagrs.

Hersey, M. D. Aneroid investigations in Germany.

Aerial Age, Vol. 14, No. 13 (Dec. 5,1921), New York, pp. 296-297.

Hess, Victor F. Uber einige physikalische Fragen, deren experimentelle Bearbeitung durch Versuche im Freiballon wünschenswert wäre.

Mitt. Oesterr. Aöro-Clubs, Nr. 7-9 (5. Juli-Sept. 1915), Wien, pp. 5-7, 5-8, 5-7.

- Ueber Höhenmessungen auf radioalskvem Grundprinziy.

Mitt. Oesterr. Aero-Clubs, Nr. 11 (1. Nov. 1916), Wien, pp. 150-158, ill.

Hetzer, Otto. Neuzeitliche Flugzeughallen aus Holz.

III. Flug-Woche, 3. Jahrg., 15. Heft (20. Juli 1921), Leipzig, pp. 304-307, ill.

Hewitt-Crocker. See Crocker, F. B.: The Hewitt-Crocker helicopter.

Hexahydrobenzene. Hexahydrobenzene as a fuel.

Aeronautics, Vol. 18, No. 339 (Apr. 15, 1920), London, p. 317.

Hickam, H. M. Municipal landing fields.

Aircraft Journal, Vol. 6, No. 26 (June 28, 1920), New York, p. 4.

- Progress in commercial aviation.

Aircraft Journal, Vol. 6, No. 12 (Mar. 20, 1920), New York, pp. 3-4.

- The truth about our aeroplane record.

Aerial Age, Vol. 14, No. 7 (Oct. 24, 1921), New York, pp. 155-158.

Hickman. To build Hickman sea sleds.

Aircraft Journal, Vol. 7, No. 2 (July 12, 1920), New York, p. 9, ill.

Hicks, C. Empire building by air: Cairo to the Cape.

Weekly Review, Vol. 2 (May 8, 1920), New York. p. 494.

Hicks, Frederick C. Aircraft versus dreadnaughts. Results of air bombing of the ex-German ships "Ostfriesland " and "Frankfurt." Speech of Hon. Frederick C. Hicks, of Long Island, in the House of Representatives, August 20, 1921. AYashington, Government Printing Office, 1921, pp. 14.

■- Hicks' bill for bureau of aeronautics in Navy.

U. S. Air Service, Vol. 5, No. 4 (May 1921), New York, p. 13.

- The proposed bureau of aeronautics in the Department of Commerce.

TJ. S. Air Service, Vol. 3, No. 5 (June 1920), New York, p. 28.

Hiero. See Hildesheim, Erik: The Austrian "Hiero" aero engines.

HiERONiiius, Otto. Anforderungen an die Motoren des Verkehrsflugzeuges. Flug, Sondernummer (Dez. 1920), Wien, pp. 57-59.

Hild-Marshonet. Das amerikanische "Hild-Marshonet" sportflugzeug. Flugwelt, 2. Jahrg., 11. Heft (26. Mai 1920), Leipzig, pp. 316-318.

•- The Hild-Marshonet sportplane.

Flight, Vol. 12, No. 13 (Mar. 25, 1920), London, pp. 347-349, ill.

Hildebrandsson, H. H. Étude préliminaire sur les vitesses du vent et les températures dans l'air libre a des hauteurs différentes. Geografiska Annaler, H. 2,1920, Upsala, pp. 97-118.

Heddesheim, Erik. A. E. G. aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 16 (Apr. 21, 1920), London, pp. 826, 828, ill.

- Albatross aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 8 (Aug. 25, 1920), London, pp. 412-417, ill., diagr.

- Albatross 8-seater cabin monoplane.

Aviation, Vol. 10, No. 16 (Apr. 18,1921), New York, p. 505, ill., diagr.

- The Austrian "Hiero" aero engines.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 5 (Aug. 4, 1920), London, pp. 300, 302, ill.

- Aviatik aeroplanes.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 6 (Aug. 11, 1920), London, pp. 330-334, ill.

- Commercial aviation in Germany.

Aviation, Vol. 11, No. 5 (Aug. 1,1921), New York, pp. 135-136, map.

- The development of giant aeroplanes in Germany.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 25 (June 23, 1920), London, pp. 1213-1218, ill., diagr.

- The development of the Parseval airships.

Aer. Eng. Suppl. The Aeroplane ,Vol. 18, No. 21 (May 26, 1920), London, pp. 1042-1048, 111.

- Dornier all-metal cantilever monoplanes.

Aviation, Vol. 10, No. 23 (June 6,1921), New York, pp. 721-723, ill.

Hildesheim, Erik. The Dornier flying boats.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 23 (June 9, 1920), London, pp. 1125-1128, ill., diagr.

- The Dornier giant flying boats.

Aviation, Vol. 8, No. 11 (July 1, 1920), New York, pp. 432-434, ill.

- Experiments with and practical use of superchargers.

Aut. Ind., Vol. 43 (Oct. 21, 1920), New York, pp. 810-816, ill., diagr.

——• German aerial developments.

Aeronautics, Vol. 20, n. s., No. 388 (liar. 24, 1921), London, pp. 198-200, ill.

- German aero engines at the armistice.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 24 (Dec. 15, 1920), London, pp. 903-904, ill., diagr.

- The German all-metal aeroplanes.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 20 (May 19,1920), London, pp. 996-1000, ill.,

- " Hawa" civil aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 18 (May 5, 1920), London, pp. 912, 917, ill.

- The latest twin-engined Gotha war aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 5 (Feb. 4, 1920), London, pp. 269-270, ilL, diagr.

■-• More German and Austrian aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 13 (Sept. 29,1920), London, pp. 588-592, ill.

- New series Vee type German Benz aero engines.

Aut. Ind., Vol. 43 (July 8, 1920), New York, pp. 59-61, ill., diagr.

- Recent Benz aero engines.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 22 (June 2, 1920), London, pp. 1018-1088, ill., diagr.

- Recent D. P. W. aeroplanes.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 10 (Sept. 8, 1920), London, pp. 4s6-490, ill.

- Recent German aero engine developments.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 4 (Jan. 2s, 1920), London, pp. 197-202, ill., diagr.

- Rumpler biplanes.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 7 (Feh. is, 1920), New York, pp. 359-362, ill.

- Sablating aeroplanes for war and peace.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 19 (May 12, 1920), London, pp. 952-956, ill., diagr.

- The Siemens-Schuckert aeroplanes.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 24 (June 16, 1920), London, pp. 1169-1176, ill., diagr.

- Some new German seaplanes.

Aviation, Vol. 11, No. 21 (Nov. 21,1921), New York, pp. 594-596, ill.

- Some Austrian aircraft.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 9 (Sept. 1, 1920), London, pp. 446-454, ill. diagr.

- Some German seaplanes.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 11 (Sept. 15, 1920), London, pp. 522-526, ill.

- A trip on the "Bodensee."

Aer. Eng. Supp . The Aeroplane, Vol. 18, No. 12 (Mar. 24, 1920), London, pp. 616-622, ill.

- The Zeppelin-Lindau all-aluminum biplanes.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 11 (Apr. 7, 1920), London, p. 734, ill.

Hill, Frederick T. Practical aeroplane construction. A treatise on modern workshop practice as applied to the building of aircraft. London, Spon, 1920, pp. 24S.

Reviewed in: Aëron. Journ., Vol. 25, No. 121 (Jan. 1921), London, pp. 39-40. Cited in: Aeron. Jour., Vol. 25, No. 121 (Jan. 1921), London, p. 2.

Hill, G. C. See Zahm, Albert Francis, R. H. Smith, and G. C. Hill: The drag of C class airship hull with varying length of cylindric midships.

Hill, G. T. R. The relative effect of changes in weight and head resistance on the performance of an aeroplane.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 311-316.

- The selection of the best wing section for an aeroplane with given landing

speed.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 317-332.

Hill, J. D. The touring airplane and the variable camber wing. Aviation, Vol. 9, No. 5 (Oct. 1, 1920), New York, pp. 159-160.

Hill, R. H. A comparison of the flying qualities of single and twin engine aeroplanes.

Might, Vol. 12, No. 44 (Oct. 28,1920), London, pp. 1134-1136.

Hill, R. M. Comparison of single and twin engined aeroplanes.

Aeronautics, Vol. 19, Nos. 367-368 (Oct. 28-Nov. 4, 1920), London, pp. 307-309, 320-321.

■- A comparison of the flying qualities of single and twin engined aeroplanes.

Aëron. Journ., Vol. 24, No. 120 (Dec. 1920), London, pp. 616-627.

- Flying of twin-engined aeroplanes.

Aëron. Journ., Vol. 25, No. 122 (Feb. 1921), London, p. 117.

——■ Flying single and twin engined airplanes.

Aviation, Vol. 10, No. 9 (Feb. 28, 1921), New York, pp. 273-276.

- The maneuvers of getting off and landing.

Aerial Age, Vol. 14, Nos. 10-12,13,15 (Nov. 14,28, Dec. 5,1921), New York, pp. 228-230, 277278, 300-302, 348-350.

Aëron. Journ., Vol. 25, Nos. 130, 132 (Oct.-Dec. 1921), London, pp. 510-536, 665-671, ill.

-■ The technique of flight.

Aéron. Journ., Vol. 25, Nos. 125, 126 (May-June 1921), London, pp. 251-260, 301-311, ill.

Hinkler, Bert. Mr. Hinkler's latest feat.

The Aeroplane, Vol. 20, No. 16 (Apr. 20,1921), London, p. 366.

- The Odyssey of Bert Hinkler.

The Aeroplane, Vol. 18, Nos. 23-24 (June 9-16, 1920), London, pp. 1113-1114,1157.

Hinterstoisser, Franz. Das Fliegen vor zehn Jahren. Flug, Sondernummer (Dez. 1920), Wien, pp. 92-93.

- Zur Geschichte der Luftfahrt in Oesterreich.

Flug, 8. Jahrg., Nr. 19-20 (Okt. 1921), Wien, pp. 25-27.

Hirschauer, L., and Ch. Dollfus. L'Année Aéronautique, 1919-1920. Paris, Dunod, 1920.

- L'Année aéronautique 1920-1921. 2e année.

Paris, Dunod, 1921, pp. 248-tx,ill.

Hirschatjer L., Après le grand prix de Monaco.

L'Aérophile, 28» année, Nos. 15-16 (1»-15 août, 1920), Paris, pp. 236-238.

—.— L'aviation de transport. L'évolution de la construction de 1907 à 1919 et la réalisation des avions de transport. L'utilisation économique des appareils. Paris, Dunod, 1920, pp. 233, ill.

Hirschauee, L. De la valeur de l'avion comme engin de transport.

Aéronautique, 3e année, Nos. 25, 26 (juin, juil. 1921), Paris, pp. 255-259, 293-296, ill.

- Un problème d'orientation.

L'Aêrophile, 28. Année, Nos. 7-8 (ler-15 avril 1920), Paris, p. 117, ill.

- See L'Année Aéronautique.

Hispano-Suiza. From Hispano-Suiza to Wright.

Aerial Age, Vol. 13, No. 23 (Aug. 15,1921), New York, p. 538.

- Hispano-Suiza engine, model, E. & I. Ignition timing instructions and chart.

Dixie type 800 magneto.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 5 (Feb. 14, 1920), Washington, Government Printing Office, pp. 3, diagr.

--• Performance of Hispano-Suiza engines.

Aircraft Journal, Vol. 7, No. 12 (Sept. 20, 1920), New York, p. 9.

- Performance test of U. S. X. B. I. A. with 300-horsepower Hispano-Suiza

engine.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 37 (May 8, 1920), Washington, Government Printing Office, pp. 7, ill.

- Standard engine report Hispano-Suiza model "H" 300 horsepower. Description of 8-cylinder model "H" Hispano-Suiza engine.

Engineering Division Air Service, Technical Orders No. 14, Mar. 1920, Dayton, Ohio, pp. 14-44, ill.

- Standard engine report of model "E" Hispano-Suiza engine. Description of

8-cylinder model "E" Hispano-Suiza engine.

Engineering Division Air Service, Technical Orders No. 13 (Feb. 1920), Dayton, Ohio, pp. 14-50, ill., diagr.

■- Standard engine report of model "I" Hispano-Suiza engine.

Engineering Division Air Service, Technical Orders No. 13 (Feb. 1920), Dayton, Ohio, pp. 51-60.

- Test of standard Hispano-Suiza engine.

Aut. Ind. Vol. 42 (May 13, 1920), New York, p. 1105.

- Testing a Hispano-Suiza engine.

Journ. Soc. Automotive Engineers, Vol. 7, No. 1 (July 1920), New York, p. 63.

- Testing of a Hispano-Suiza motor.

Aircraft Journal, Vol. 7, No. 5 (Aug. 2, 1920, New York, p. 12.

- See Isenberg, H. O. C: Hispano-Suiza airplane engine.

History. The history of aeronautics.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 19 (May 11,1921), London, pp. 437-440.

Hitzemann, Ivan. Buc, en souvenir des journées d'octobre 1920.

L'Aêrophile, 28. année, Nos. 21-22 (1«-15 nov. 1920) Paris, p. 312.

- Les joujoux ailés.

L'Aêrophile, 28e. année, Nos. 13»-14 (1-15 juil. 1920), Paris, p. 180.

Hobbs, F. Dudley. How to fly and instruct on an "Avro." London, Longmans, Green & Co., 1919, pp."76.

Hoenigmann, Walter. Alpenflüge.

Flug, Sondernummer (Dez. 1920), Wien, pp. 50-55, ill.

Hoeppnee. Deutchslands Krieg in der Luft. Leipzig, K. F. Koehler, 1921.

Reviewed in: III. Flug-Woche, 3. Jahrg., 26. Heft. (21. Dez. 1921), Leipzig, pp. 541-542.

Hoeppner, Excellenz v. Männer der luftfahrt, XVI.

III. Flug-Woche, 3. Jahrg. 3. Heft (2. Feb. 1921), Leipzig, pp. 40-41, ill.

44439—25-14

Hopp, Wilhelm. The development of German Army airplanes during the war.

Technical Notes, National Advisory Committee for Aeronautics, No. 56, June 1921, Washington (mim.), pp. 23, diagrs.

- Theory of the ideal windmill.

Technical Notes, National Advisory Committee for Aeronautics, No. 46, July, 1921, Wash, ington (mim.), pp. 15, diagrs.

-— Zum Rhön-Segelflug-Wettbewerb 1921.

Zeitschr. Flugt. Motorluftsel, 12. Jahrg., 14. Heft. (30. Juli 1921), München, pp. 209.

- Zur "Arbeitsleistung vermittelst geringer Druckunterschiede."

Zeitscher. Flugt. Motorluftsch., 11. Jahrg., Heft 23, 24 (31. Dez. 1920), Berlin, pp. 344 -345.

■- Zusatz "Theorie der idealen Windkraftmaschine."

Zeitschr. Flugt. Motorluftsch., 11. Jahrg.. Heft 15 (15. Aug. 1920), Berlin, pp. 223-227.

Hoffman, G. G. Ordeal by fire; a note on the psychology of fear. Atlantic Monthly, Vol. 125 (Mar. 1920), Boston, pp. 353-356.

Hoffmann, A. M. New helicopter design promising.

Pop. Mech., Vol. 34 (Aug. 1920), Chicago, pp. 243-244, ill.

Hoffman, Raoul J. Comparison of airplane performances.

Aviation, Vol. 11, No. 16 (Oct. 17,1921), New York, pp. 446-447, ill.

- Selection of a wing section.

Aviation, Vol. 7, No. 11 (Jan. 1, 1920), New York, pp. 491-492, diagr.

Hofmannsthal, Emu, v. Bankrott des Luftrechts?

Mitt. Oesterr. Aero-Clubs, Nr. 10 (5. Okt. 1915), Wien, pp. 7-9.

Hogg, John Edwin. An airplane camping tour in California.

The Ace, Vol. 2, No. 2 (Sept. 1920), Los Angeles, pp. 8, 23, ill; Nos. 3-4 (Oet.-Nov.), pp. 19, 19-20, 23, ill.

- Flying anglers troll for deep-sea fish.

Pop. Mech., Vol. 34 (Sept. 1920), Chicago, pp. 321-322, ill.

Holland. Aerodromes, seaplane stations, customs, etc.

Flight, Vol. 12, No. 48 (Nov. 25, 1920), London, pp. 1212-1213.

—— Air traffic with Holland.

Aeronautics, Vol. 18, No. 334 (Mar. 11, 1920), London, p. 221.

Holland-London. The Holland-London air service.

Flight, No. 631, Vol. 13, No. 4 (Jan. 27, 1921), London, p. 66.

Holmes, J. D. V. The worries of an aerodrome prospector.

The Aeroplane, Vol. 18, No. 13 (Mar. 31, 1920), London, p. 656.

Holmes, P. L. Mail transport. The cooperation of aircraft and surface craft. Aeronautics, Vol. 19, No. 366 (Oct. 21, 1920), London, pp. 293-294.

Holt, H. S. An air mail suggestion.

Aeronautics, Vol. 20, n. s., No. 394 (May 5,1921), London, p. 312.

- The air postman.

Aeronautics, Vol. 19, No. 370 (Nov. 18, 1920), London, p. 360.

- Life parachutes and the Air Ministry.

Flight, Vol. 12, No. 1 (Jan. 1, 1920), London, pp. 22-23.

- Parachutes anchored and free.

Flight, Vol. 12, No. 9 (Feb. 26, 1920), London, p. 239.

- See Calthrop, E. R.: Colonel Holt on parachutes and the Air Ministry.

Holterman, E. H. Ford motored airplane proves practical.

Everyday Engineering Magazine, Vol. 8, No. 5 (Feb. 1920), New York, pp. 286, 287, ill.

Honaman, R. K., and E. L. Ponseoa. Electrical resistance of various insulating materials at high, temperatures.

Fifth annual report of National Advisory Committee for Aeronautics, Washington, 1930, pp. 91-99, diagrs.

Honaman, R. K. See Silsbee, F. B., and R. K. Honaman: Methods of measuring resistance of insulators at high temperatures.

Honduras. Aeronautics in Honduras.

Aerial Age, Vol. 13, No. 11 (May 23, 1921), New York, p. 258.

- Aviation in Honduras.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 6 (Aug. 10,1921), London, p. 133, ill.

- Aviation progress in the Republic of Honduras.

Aerial Age, Vol. 13, No. 24 (Aug. 22, 1921), New York, p. 572.

Honegger, Jean-Jacques. Le premier champ d'aviation alpestre en Suisse à Montana.

Suisse Aérienne, 3" année, 1921, No. 20, Berne, p. 290.

Hope, Linton. Note on flying-boat hulls.

Aëron. Journ., Vol. 21, Nos. 116-117 (Aug., Sept. 1920), London, pp. 440-471, 495-497, ill. Aeronautics, Vol. 13, No. 344 (May 20, 1920), London, pp. 396-399.

Flight, Vol. 12, Nos. 21-23 (May 20-June 3,1920), London, pp. 544-548, diagr., 569-573, 590-593. Lecture delivered by Maj. A. R. Low.

- Obituary. The late Maj. Linton Hope, M. I. N. A.

Aëron. Journ., Vol. 25, No. 121 (Jan. 1921), London, p. 42.

Hopp. Der überzogene Flug, seine Gefahren und seine Beeinflussung durch die Konstruktion.

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 4 (28. Feb. 1920), Berlin, pp. 52-54.

Hopf, Ludwig. Flug- und Trudelkurven.

Zeitschr. Flugt. Motorluftsch, 12. Jahrg., 18. Heft (30. Sept. 1921), München, pp. 273-278, diagrs.

Hopkins, Albert A. Leonardo Da Vinci as aviation engineer. The man who first suggested the helicopter and the motor to drive flying machines.

Scient. Amer. Monthly, Vol. 3, No. 4 (Apr. 1921), New York, pp. 355-359, ill.

Hopf, Geo. Coating airplane wings mechanically.

Aviation, Vol. 9, No. 3 (Sept. 1,1920), New York, p. 96, diagr.

Horizon. See Gradenwitz, Alfred: German gyro gauges. The Anschutz aircraft horizon.

Horn, Alfred. Männer der Luftfahrt.

111. Flug-Woche, 3. Jahrg., 8. Heft (16. März 1921), Leipzig, p. 117, port.

Horn, E. F. Density classification of laminations for aeroplane propellers. Aerial Age, Vol. 10, No. 13 (Jan. 12, 1920), New York, p. 502, charts.

Horsepower. See Engines: The variation of horsepower with altitude.

Horstenke, B. Drachenaufstiege; ist Drachensteigen als Sport Möglich? III. Flug-Woche, 3. Jahrg., 14. Heft (6. Juli 1921), Leipzig, pp. 273-274, ill.

HouRWiCH, Iskander. "Design of aeroplane engines," by John Wallace. (1920.) A review.

U. S. Air Service, Vol. 6, No. 1 (Aug. 1921), New York, p. 30.

Houston, G. H. Aeronautics, international aspects, national control, commercial development, etc.

Journ. Soc. Automotive Engineers, Vol. 6 (May 1920), New York, pp. 293-297.

Houten, Ot van. In memoriam.

Vlicgveld, 5e jaarg., No. 23 (5 Nov. 1921), Amsterdam, p. 319, port.

Howard. Amerik. Howard R-Flugzeug-Projekt.

Flugsport, 13. Jahrg., Nr. 5 (2. März 1921), Frankfurt, pp. 117-118, ill.

Howard, Harvey J. Judgment of distance with semaphores and a screen at 100 meters.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 99, Pt. 17 (Aug. 15, 1920), Washington, Government Printing Office, pp. 94-99, ill.

■-■ A new apparatus for testing accommodation.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 99, Pt. 15 (Aug. 15, 1920), Washington, Government Printing Office, pp. 86-89, diagr.

- A stereomicrometer.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 99, Pt. 16 (Aug. 15, 1920), Washington, Government Printing Office, pp. 90-93, ill., diagr.

- A test for the judgment of distance.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 3 (Mar. 15, 1920, Washington, Government Printing Office, pp. 99-115, ill.

Howard, R. Seeking the 7-mile ceiling.

Scient. Amer., Vol, 122 (Mar. 13, 1920), New York, p. 273.

Howard, Raymond M. A proposed American transport aeroplane.

Flight, No. 630, Vol. 13, No. 3 (Jan. 20,_ 1921), London, p. 42, ill.

Howard, S. Raid on Dun.

North American Review, Vol. 210 (Dec. 1919), New York, pp. 809-819.

Howard lectures. Howard lectures—Royal Society of Arts.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 6 (Feb. 9,1921), London, p. 140. Flight, No. 632, Vol. 13, No. 5 (Feb. 3,1921), London, p. 84.

Howe, F. B. Assembling seaplanes at a naval air station.

Pop. Mech., Vol. 34 (Dec. 1920), Chicago, pp. 896-897, ill.

Howell, Charles W. Lagging aviation.

TJ. S. Ah- Service, Vol. 4, No. 1 (Aug. 1920), New York, pp. 28-29.

Howells, W. A. Art of camouflage.

Illuminating Engineer, Vol. 13 (Jan. 1920), London, pp. 6-13, 357-359, ill.

Rowland, H. Long way from earth.

Independent, Vol. 102 (Apr. 10,1920), New York, pp. 48-49, ill.

Hub er, Fritz. Erschütterungen schwerer Fahrzeugmotoren. München, R. Oldenbourg, 1920.

Reviewed in: Zeitschr. Flugt. Motorluftsch, 12. Jahrg., 1. Heft (15. Jan. 1921), München, p. 10.

Hubbard, T. O'B. Pioneers of British aviation—XLI: Squadron leader T. O'B. Hubbard, M. C, A. F. C.

Aeronautics, Vol. 18, No. 314 (May 20,1920), London, pp. 400-401, ill.

HuBRiCH, Gerhard. Fliegererinnerungen aus Skandinavien. Luftweg, Nr. 11-12 (24 März 1921), Berlin, pp. 86-89, ill.

Hudson, Hilda P. Incidence wires.

Aeron. Jour., Vol. 24, No. 117 (Sept. 1920), London, pp. 505-516, diagr.

- Staggered spar sections.

Aeron. Journ., Vol. 25, No. 130 (Oct. 1921), London, pp. 556-557.

- The strength of laterally loaded struts.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 24 (June 16, 1920) London, pp. 1178-1179.

Huff-Daland. Huff-Daland biplane.

Aerial Age, Vol. 13, No. 7 (Apr. 25, 1921), New York, p. 150.

- Huff-Daland biplane at Boiling Field.

Aviation, Vol. 10, No. 17 (Apr. 25, 1921), New York, p. 535, ill.

—■—■ The Huff-Daland H. D^ training airplane.

Aviation, Vol. 11, No. 13 (Sept. 26, 1921), New York, pp. 368-369, ill.

Hug, August. Das Flugzeug als Verkehrsmittel.

Suisse Aérienne, 2» année, No. 21 (21 nov. 1920), Berne, pp. 318-319; No. 22 (30 nov.), pp. 336-339, ill.; 3« année, 1921, Nos. 1, 6, 8, 9, pp. 10-13, 74-76, 108-113, 124-126, ill.

Hug, Martin. Deutschland und das Ballon-Gordon-Bennett 1921. Suisse Aérienne, 3s année, 1921, No. 20, Berne, p. 296.

- Zur Segelflugfrage.

Suisse Aérienne, 3« année, 1921, No. 20, Berne, pp. 292-294.

Huguet, L. Airplane balance.

Technical Notes, National Advisory Committee for Aeronautics, No. 51, June, 1921. Washington (mim.), pp. 28, diagrs.

Aerial Age, Vol. 13, Nos. 15-16,18 (June 20-27, July 11,1921), New York, pp. 345-346, 371-373, 417-419.

- Calculs aérodynamiques des avions: lois de la résistance de l'air.

Encyclopédie Technique des Aide-mémoire Pluman, Paris & Liège, C. Béranger, 1922, pp. 120, diagrs.

- Les hélicoptères. Communication faite le 12 avril 1921 à la Commission

Scientifique de l'Aéro-Club de France par M. le capitaine L. Huguet.

L'AérophUe, 29« année, Nos. 13-14 (1>"-15 ]uil. 1921), pp. 209-213, ill.

Huisman, George. Dans les coulisses de l'aviation, 1914-1918. Paris, La Renaissance du Livre, 1 vol.

Hull, T. G. Creep errors in altimeters due to hysteresis.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 668-670.

Hull, Lewis M. Determination of the output characteristics of electron-tube generators.

Washington, 1919, Bureau of Standards.

Humphreys, W. J. A manual of aerography for the United States Navy, 1918.

Department of the Navy, Special Committee, Washington, Government Printing Office, 1918, pp. 165.

- Physics of the air.

Philadelphia Published for the Franklin Institute, by J. B. Lippincott Co., 1920, pp. xi, 665, ill.

Reviewed by Alexander McAdie in: Science N. S., Vol. 53, No. 1370 (Apr. 1, 1921), pp. 310-312.

Hunsaker, Jerome C. Accident percentage.

Aircraft Technical Note No. 190, Department of the Navy, Bureau of Construction and Repair, Washington (Oct. 20, 1920), p. 1.

—— Model test for strength and deformation of nonrigid airship hulls. Aviation, Vol. 9, No. 2 (Aug. 15, 1920), New York, pp. 53-51, diagr.

- Naval architecture in aeronautics.

Aëron. Journ., Vol. 24, No. 115 (July 1920), London, pp. 321-405, ill.

Aeronautics, Vol. 18, No. 349; Vol. 19, No. 350 (June 21-July 1, 1920), London, pp. 480, 9-12. Aviation, Vol."9, No. 1 (Aug. 1, 1920), New York, pp. 10-14. Engineering, Vol. 109 (June 25, 1920), London, pp. 857-860, diagr.

Flight, Vol. 12, Nos. 27-33 (July 1-Aug. 12, 1920), London, pp. 692-695, 811-S46, 866-868, 888-891.

Journ. Soc. Auttsmotive Engineers, Vol. 7, No. 6 (Dec. 1920), New York, pp. 501-520, diagr. U. &. Air .Service, Vol. 4, No. 2 (Aug. 1920), Now York, p. 26.

Humsakeu, Jerome C. Résumé of wind-tunnel tests of airship envelopes. Aviation, Vol. 8, No. 3 (Mar. 1, 1020), New York, p. 110.

- U. S. naval aircraft.

Journal of Franklin Institute, Vol. 180 (Juno 1920), Philadelphia, pp. 715-736, ill.

--Velocity and stresses in a glide.

Aviation, Vol. 7, No. 12 (Jan. 15, 1920), New York, pp. 539-540, diagr.

Hunt, Franklin L. See Hersey, Mayo D., Franklin L. Hunt, and Herbert N. Eaton: The altitude effect on air speed indicators.

Hunter, Robert J. Cultivating the balance sense: A prelude to cloud flying.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 3 (Mar. 15,1920),Washington, Government Printing Office, pp. 79-80. Aeronautics, Vol. 19, No. 351 (July 8, 1920), London, pp. 37-38.

Hunting. See Great Britain: The Dominions and aircraft.

Huntington. The Huntington motorcycle-engined monoplane.

Aerial Age, Vol. 12, No. 17 (Jan. 3,1921), New York, p. 449, diagr.

Huntington, A. K. Death of Professor Huntington.

Aeronautics, Vol. 18, No. 339 (Apr. 22, 1920), London, p. 323, ill.

Husted, D. R. Stability and balance in airplanes.

Aviation, Vol. 8, No. 5 (Apr. 1, 1920), New York, pp. 193-194, diagr.

Hurricane. Airplane estimate of hurricane damage.

Aviation, Vol. 11, No. 3 (July 18,1921), New York, p. 77, ill.

Huxley, Julian S. The "night" of flying fish.

Nature, Vol. 107, No. 2687 (Apr. 28, 1921), London, p. 267.

Hyde, J. H. Experiments on models of a "Duplex" wind channel: (ii) Experiments on a model of the proposed 14 by 7 foot wind channel, with an investigation into the steadiness of the velocity and direction of the air flow compared with the corresponding effects in an existing 7-foot channel.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 1, London, 1921, pp. 37-50, ill.

- See Stanton, Thomas Ernest, and J.. II. Hyde: Experiments on models of a

"Duplex" wind channel, (i) Note on a possible method of increasing the size of wind channels beyond their present limits.

- See Stanton, T. E., and J. H. Hyde: On a method of estimating the velocity

changes of bodies falling vertically in water, and its application to the case of bombs.

Hyde, W. A. A stabilized camera.

Aviation, Vol. 10, No. 1 (Jan. 3,1921), New York, pp. 13-14, ill.

- Stabilization of airplane instruments.

U. S. Air Service, Vol. 4, No. 4 (Nov. 1920), New York, pp. 13-14, ill.

Hydroaeroplane. A hydroaeroplane flying model.

Aerial Age, Vol. 12, Nos. 24-25 (Feb. 21-28, 1921), New York, pp. 617, 641, ill., diagr.

-• The hydroaeroplanes at Monaco.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 19 (May 12, 1920), London, pp. 958-964, ill.

Hydroavions. El torneo internacional "Schneider" para hidroaviones. Tohtli, ano 5, Num. 4 (nov.-dic. 1920), Mexico, p. 210.

Hydro-electric work. See Dich man, E. W.: Airplane costs in hydro-electric work.

Hydrodome. Airplane hydroplane makes 71 miles an hour. Pop. Mech., Vol. 33 (Jan. 1920), Chicago, pp. 2-3, ill.

- Airplane-wing principle applied to water craft.

Aut. Ind., Vol. 41 (Pec. 25, 1919), New York, p, 1253, ill.

Hydrodynamics. See Betz, A.: Wirbel und im Zusammenhang damit stehende Begriffe der Hydrodynamik.

- See Prandtl, Ludwig: Application of modern hydrodynamics to aeronautics.

Hydrogen. Apparatus for making and handling hydrogen.

Aviation, Vol. 9, No. 13 (Dec. 13, 1920), New York, p. 428.

-■ See Barr, Guy: Hydrogen for airships and balloons.

-■ See Barr, Guy, and E. A. Owen: Note relative to the weight of hydrogen.

- See David, W. T.: Radiation of explosions of hydrogen and air.

- See Fuel: Hydrogen in airship engines.

- See Rideal, Eric K.: Développements possibles dans la fabrication de l'hydrogène.

- See Ledig, P. G.: Inflammability of jets of hydrogen and inert gas.

- See Rosenhain, W., and G. Barr: Report on examination of Short's hydrogen

detector.

- See Teed, P. L.: Hydrogen production for airships.

- See Teed, P. L.: The lift of hydrogen.

- See Villers, R.: Un nouveau procédé pour la fabrication industrielle de l'hydrogène.

Hydro-glider. An interesting hydro-glider.

Aviation, Vol. 11, No. 2 (July 11,1921), New York, p. 48, ill.

Hydrographic Office. See United States, Hydrographie Office: Notice to aviators . . .

Hydrography. See Photography: Application of photography in hydrography.

Hydroplanes. Air-propelled hydroplane has auto body. Pop. Mech., Vol. 34 (Aug. 1920), Chicago, p. 161, ill.

- Epreuves et concours aéronautiques. Les épreuves d'hydravions de Monaco.

L'Aérophile, 28. année, Nos. 3/4 (1«-15 févr. 1920), Paris, pp. 57-59.

- Hydravions géants aux États-Unis.

La Nature, Supplément, 48. année, No. 2425 (25 sept. 1920), Paris, p. 97.

--Navy sells 400 flying boats to a New York concern.

The Naviator, Vol. 1, No. 23 (July 24, 1920), Pensacola, Ha., pp. 1, 8.

- See Baker, G. S.: Flying boat hulls.

- See Baker, G. S.: Flying boats—the form and dimensions of their hull.

- See Creed, G.: The "What is it?"

-- See Floats: Collapsible floats for aeroplanes.

- See Flying boats: Acetylene-welded flying boat carries 10 tons.

- See Guidoni, A.: The gliding surface of seaplane floats.

- See Hickman: To build Hickman sea sleds.

- See Hope, Linton: Notes on flying boat hulls.

-■ See Nutting, William Washburn: The "HD-4." A 70-miler with remarkable

possibilities developed at Dr. Graham Bell's laboratories on the Bras d'Or Lakes.

—— See Paul, George F.: Boats driven by airplane propellers.

I-

Iachino, A. Il potere marittimo nella grande guerra.

L'Aeronautica, anno 3, Num. 5-6 (luglio-agosto 1920), Borna, pp. 234-239.

Ice sled. An ice sled.

Aviation, Vol. 11, No. 21 (Nov. 21,1921), New York, p. 606, ill.

Ide, John Jay. Aeronautic research laboratory at the Institute of St. Cyr.

Aut. Ind., Vol. 44, No. 16 (Apr. 21,1921), New York, pp. 853-855, ill., diagrs.

- Aeronautical index, February, 1920.

Aircraft Technical Note No. 179, Department of the Navy, Bureau of Construction and Repair, Washington (Apr. 24, 1920), pp. 19.

- Aeronautical index, March, 1920.

Aircraft Technical Note No. 180, Department of the Navy, Bureau of Construction and Repair, Washington (May 18, 1920), pp. 22.

•- Aeronautical index, April, 1920.

Aircraft Technical Note No. 182, Department of the Navy, Bureau of Construction and Repair, Washington (June 26,1920), pp. 20.

■- The Avorio-Prassone kite balloon.

Aircraft Technical Note No. 187, Department of the Navy, Bureau of Construction and Repair, Washington, 1920, pp. 4, ill. '

Aviation, Vol. 8, No. 8 (May 15, 1920), New York, pp. 314-316, ill., diagr.

- Last race for the Gordon Bennett cup.

Scient. Amer., Vol. 123 (Oct. 30,1920), New York, p. 451, ill.

- The London aero exhibition.

Aviation, Vol. 9, No. 3 (Sept. 1, 1920), New York, pp. 93-94.

- The Zodiac airship ZD-US 1.

Aviation, Vol. 8, No. 3 (Mar. 1, 1920), New York, pp. 107-108, ill.

Idrac, P. Étude du vol à la voile dans la Haute-Guinée.

L'Aérophile, 28. année, Nos. 5/6 (1«-15 mar. 1920), Paris, pp. 71-72. C. E. Acad. Sei. Vol. 170, No. 5 (févr. 2, 1920), Paris, pp. 269-272.

- Soaring flight in Guinea.

National Advisory Committee for Aeronautics, Technical Notes No. 13, Washington, 1920, pp.5.

Translated from the French by D. L. Bacon. Aeronautics, Vol. 19, No. 361 (Sept. 16, 1920), London, p. 212.

- Le vol à voile.

La Nature, 48. année, 2« sem., No. 2434 (27 nov. 1920), Paris, pp. 347-349.

Ignition. Aero engine ignition.

Electrical Review, Vol. 89, No. — (Nov. 18, Dec. 16,1921), London, pp. 692, 835-836, 882-884.

- Comparative merits of Dixie magnetos and Delco battery ignition system when

used on a Liberty "12" aero engine.

Aviation, Vol. 8, No. 7 (May 1, 1920), New York, pp. 291-292.

- Magneto v. battery ignition.

Aeronautics, Vol. 19, No. 362 (Sept. 23, 1920), London, p. 224.

■- See Engines : Why magneto ignition makes a good engine better.

- See Hallett, G. E. A.: Ignition from the engineman's viewpoint.

—— See Heidt, P. M. : Ignition is discussed by the metropolitan section, S. A. E.

- See Paquito: The Paquito ignition system.

- See Schools: Ignition course, aviation mechanics' school, Great Lakes.

- See Schwager, Otto: Eine neue Zündung ausländischer Flugmotoren.

Ignition. See Sparrow, S. W.: Increases in maximum pressures produced by pre-ignition in internal-combustion engines.

—•— See Sparrow, S. W. : Preignition and spark plugs.

■—■— See Starters: New ignition end Bijur airplane engine starter.

Illingswobth, A. E., and V. A. H. Robeson. The history of the 24th Squadron, R. A. F.

London.

Mentioned in: Aëron. Journ., Vol. 25, No. 125 (May 1921), London, p. 221. A history ol 24th squadron, Royal Air Force. London, 1920, The Aeroplane and General Publishing Co.

Imber. The Imber safety tank.

Aviation, Vol. 11, No. 12 (Sept. 19,1921), New York, p. 347.

- The Imber self-sealing gasoline tank.

Aircraft Journal, Vol. 6, No. 8 (Feb. 21, 1920), New York, pp. 11-12, ill.

Imbrecq, J. Jurisprudence. Accidents et compagnies d'assurances. L'Aérophile, 28. année, Nos. 3/4 (1<*-15 févr. 1920), Paris, p. 56.

Imperial Air Communications Committee. The report of the Imperial Air Communications Committee.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 11 (Sept. 14,1921), London, pp. 235-236.

Imperial conference. Air questions at the imperial conference.

Flight, No. 655, Vol. 13, No. 28 (July 14,1921), London, p. 466.

Imperial War Museum. The Imperial War Museum.

Flight, Vol. 12, No. 24 (June 10, 1920), London, pp. 617-618, ill.

Incidence meter. Aircraft incidence meter.

Everyday Engineering Magazine, Vol. 9, No. 2 (May, 1920), New York, p. 137, ill.

-- See Zahm, Albert Francis: Development of an aircraft incidence meter.

Inclinometers. See Instruments: Special inclinometers and indicators.

India. Aerial survey in India.

Aerial Age, Vol. 14, No. 2 (Sept. 19,1921), New York, p. 40.

—— Aerial surveying in India.

Aerial Age, Vol. 13, No. 12 (May 30,1921), New York, p. 280

- Aeroplanes for India.

Flight, Vol. 12, No. 34 (Aug. 19, 1920), London, p. 900.

- Indian air routes.

Aeronautics, Vol. 20, n. s., No. 394 (May 5,1921), London, p. 324.

- The Indian Government and aviation.

Aeronautics, Vol. 19, No. 373 (Dec. 9, 1920), London, p. 419.

- India's hundred aeroplanes.

Flight, No. 646, Vol. 13, No. 19 (May 12,1921), London, p. 327.

- The "Nighthawk" in India.

The Aeroplane, Vol. 18, No. 9 (Mar. 3,1920), London, pp. 456, 458, ill.

- Prohibited areas in India.

Flight, Vol. 12, No. 13 (Mar. 25, 1920), London, p. 346.

- Suggested air fleet for India.

Aeronautics, Vol. 19, No. 362 (Sept. 23, 1920), London, p. 229.

- See R., F. A. de V.: The Indian air mail.

-■ See Civil aviation: Civil aviation in India and Burma.

India. See Duguid, Alan: Aviation in India.

- Sec Robertson, F. A. de V.: Airships for India.

- See Robertson, F. A. de V.: Subsidies—A precedent from India.

Indiana. Bombs: Bombing the old battleship Indiana.

Indicator. See Engines: An indicator for aero engines.

Indicator, gyroscopic. Indicatore giroscopico di direzione tipo Sperry. Rivista marittima (luglio-agosto 1920), Borna, pp. 25-26.

Indicators. See Instruments: Turn and pitching indicators for airships. Induction. See Sherman, T. L.: Induction systems.

Industrial plants. See Borden, William A.: Air bombing of industrial plants.

Industry. How to reestablish the aircraft industry.

Aer. Eng. Suppl. The Aeroplane, Vol, 20, No. 13 (Mar. 30, 1921), London, pp. 301-304.

- An opportunity for the aircraft industry.

The Aeroplane, Vol. 21, No. 16 (Oct. 19, 1921), London, p. 339.

Inflow theory. See Riach, M. A. S.: A note on the "inflow " theory of the airscrew.

Insect flight. See Stellwaag, F.: How insects steer themselves while flying.

Insignia. Aero squadron insignias approved by War Department. Air Power, Vol. 6, No. 1 (Jan. 1920), New York, pp. 194-204, ill.

- Proper insignia for United States aeroplanes.

Aerial Age, Vol. 12, No. 19 (Jan. 17,1921), New York, p. 497.

-- See Italy: Italian air service insignia.

Institution of Aeronautical Engineers.

Flight, Vol. 12, No. 4 (Jan. 22, 1920), London, p. 110. Aeronautics, Vol. 20, n. s., Nos. 378 (Jan. 13,1921), London, p. 37.

- The Institution of Aeronautical Engineers. Two years' progress: History, objects, and construction.

Aeronautics, Vol. 21, n. s., No. 405 (July 21,1921), London, p. 50.

Instituto Sperimentale Aeronautico. Rendiconti deUTnstituto Sperimentale Aeronautico.

Roma Instituto Sperimentale Aeronautico, 1920, Vol. 8, No. 1.

Instruments. A baro-thermograph for use on aeroplanes.

Tech. Kept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 673-674, diagr.

- Aerial sextant and other aeronautic aids.

Curator of History Magazine, New York Times, Vol. 12 (June 1920), New York, pp. 500-501.

-■ Aeronautic instruments. General principles of construction, testing and use.

Aerial Age, Vol. 11, Nos. 12-13 (May 31-June 7,1920), New York, pp. 403-405, 437-438,450, ill.

•-- Aids to aerial navigation.

Aerial Age, Vol. 6, No. 2 (Jan. 10, 1920), New Y'ork, p. 9, ill.

- Compass deviation in aircraft.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 533-536.

•-■ Experiments with aircraft instruments.

Aircraft Journal, Vol. 6, No. 11 (Mar. 13,1920), New York, p. 26.

- Foreign aviation instruments.

Journ. American tnst. Electrical Engineers, Vol. 39 (Nov. 1920), New York, p. 975. Aerial Age, Vol. 12 (Nov. 1,1920), New York, p. 229.

-- Instrumenti per la navigazione aerea.

Rivista marittima (oct. 1920), Borna, pp. 11-12.

Instruments. New computers for aeroplane work.

Asrial Age, Vol. 10, No. IS (Feb. 16, 1920), New York, p. 666, ill.

- A new navigation instrument.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 4 (Jan. 26,1921), London, p. 86, diagr.

- Note on a rate of climb indicator for use on aeroplanes.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 699-701, diagr.

- Note on the R. A. F. low altitude aimer: A simple form of bombsight for low

altitude work.

Tech. Rept. Advis. Com. Aeronautics, 1915-1916, London, 1920, pp. 527-528, ill.

- Nouvelle méthode de navigation aérienne à l'estime, au moyen d'un correcteur

de route.

Génie Civil, Vol. 77 (nov. 6, 1920), Paris, p. 378.

- A petrol flow meter for use on aeroplanes.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 675-677, ill., diagr.

- Pressure gages for airplanes.

Aviation, Vol. 9, No. 11 (Nov. 29, 1920), New York, pp. 357-353, ill.

- Special inclinometers and indicators.

Aviation, Vol. 9, No. 10 (Nov. 22, 1920), New York, pp. 322-323, ill.

■-■ Tautometer for testing doped surfaces.

Scient. Amer. Monthly, Vol. 1 (Feb. 1920), New York, pp. 130-131, ill.

■-• Turn and pitching indicators for airships.

Aeronautics, Vol. 19, No. 370 (Nov. 18, 1920), London, pp. 356, 358, ill.

- See Altitude : Calibration of barographs used in airplane altitude measurements.

- See Bennewitz, Kurt: Airplane flight instruments.

- See Compass: Distant-reading German airplane compass.

■-• See Courtois-Suffit, R.: L'indicateur de stabilité R. Courtois-Suffit.

■-• See Darwin, H. : Static head turn indicator for aeroplanes.

- See Driftograph.

•-• See Equipment: General instrument and oxygen equipment.

•-• See Field, M. B.: Navigational magnetic compass considered as an instrument

of precision.

- See Fog: Instrument guides planes in fog.

- See Hersey, Mayo D.: Aeronautic instruments.

-- See Hyde, \V. A.: Stabilization of airplane instruments.

- See Greenhill, George: Compass deviation due to vibration, without friction.

- See Hull, T. G. : Creep errors in altimeters due to hysteresis.

- See Landing: Automatic landing indicator.

- See Lindemann, F. A.: The northerly turning error of the magnetic compass.

- See Lucas, Keith: On a new type of magnetic compass for use on aeroplanes.

-- See Lucas, Keith: Report on the errors of compasses on aeroplanes.

- See Mallock, A.: Behaviour of levels when subject to vibration.

- See Mallock, A. : Deviation of the compass due to vibration and friction between

the cup and the pivot.

- See Mendenhall, Charles E.: Aeronautic instruments.

Instruments. See Merrill, Albert A. : Recording instrument for use in wind tunnels.

- See Norton, Frederick Harwood: . . . The efficiency of small bearings in instruments of the type used in aircraft.

- See Norton, Frederick Harwood: Efficiency of small bearings in instruments of

the type used in aircraft.

——■ See Pannell, J. R. : Calibration of the anemometers at high velocities.

- See Pioneer: Pioneer aircraft instruments.

- See Reid: The Reid control indicator.

- See Sanford : The Sanford clinometer.

- See Smith: Smith instruments.

- See Sparrow, S. W.: Instruments for measuring engine clearance volumes.

- See Tautometer: Tautometer for testing doped surfaces.

- See Volmerange, A.: Progrès techniques en 1920 dans la navigation aérienne,

- See AVinters, S. R.: New aviation instrument.

- See Zahm, Albert Francis: Development of an aircraft incidence meter.

Insulators. See Silsbee, F. B., and R. K. Honaman: Methods of measuring resistance of insulators at high temperatures.

Insurance. Air insurance.

Aeronautics, Vol. 20, n. s., No. 400 (June 16, 1921), London, p. 425.

•-• Aircraft insurance.

Aircraft Journal, Vol. 7, No. 16 (Oct. 18, 1920), New York, p. 5.

■-- Aircraft insurance and the air conference.

Flight, Vol. 12, No. 43 (Oct. 21, 1920), London, pp. 1110-1111.

- Aircraft insurance data.

Aerial Age, Vol. 13, No. 9 (May 9, 1921), New York, p. 198.

- Aircraft insurance for 1921.

Aerial Age, Vol. 13, No. 11 (May 23, 1921), New York, p. 246.

——• Aircraft insurance in the TJ. S. A.

Flight, No. 644, Vol. 13, No. 17 (Apr. 28, 1921), London, p. 295.

- The aircraft insurance problem.

Journ. Soc. Automotive Engineers, Vol. 7, No. 3 (Sept. 1920), New York, p. 257.

- American air insurance.

Aeronautics, Vol. 20, n. s., No. 398 (June 2, 1921), London, p. 394.

- Australian flight accident: Insurance.

Aeronautics, Vol. 19, No. 374 (Dec. 16, 1920), London, p. 443.

- Depreciation and insurance of war type aeroplanes and seaplanes.

Aeronautics, Vol. 19, No. 363 (Sept. 30, 1920), London, pp. 246-247.

- Insurance men demand aerial laws.

Aviation, Vol. 10, No. 1 (Jan. 3, 1921), New York. p. 22.

- Legislation and insurance.

Aviation, Vol. 11, No. 17 (Oct. 24, 1921), New York, p. 478.

- Passenger hazard now insurable.

Aircraft Journal, Vol. 7, No. 13 (Sept. 27, 1920), New York, p. 7.

- Some aircraft hazzards as seen by the insurance agent.

Literary Digest, Vol. 66 (Aug. 14, 1920), London, pp. 84-86.

Insurance. See Lewis, Hugh, and Gwilym Hugh Lewis: Aviation and insurance.

- See Lloyd's: Lloyd's and aviation risks.

- See Martin, E. Stockton: Aircraft insurance and the aircraft industry.

- See Martin, E. Stockton: The cost of aircraft insurance.

——■ See Redway, Albert J., jr.: Aviation insurance—What it is and what it offers the ex-service man.

- See Richard, Paul. Aviation et Assurance.

- See Simon, Harry M.: Airplane insurance.

- See Travelers Insurance Company, Hartford: Airplane and safety.

- See Wentworth, R. Preston: Aircraft insurance—A problem capable of solution.

Intelligence tests. See Gradenwitz, Alfred: Intelligence tests at high altitudes.

International Air Convention.

Aeronautics, Vol. 19, No. 350 (July 1, 1920), London, p. 4.

- Protocol to International Air Convention.

Flight, Vol. 12, No. 26 (June 24, 1920), London, p. 669.

- See Laws and regulations: International Air Convention.

International air law. See Spaight: Aircraft in peace and the law.

International Air Navigation Congress.

Aviation, Vol. 11, No. 12 (Sept. 19,1921), New York, p. 346.

—— France to organise first International Air Navigation Congress. To be held concurrently with next Paris aero show.

Flight, No. 659, Vol. 13, No. 32 (Aug. 11,1921), London, p. 543.

International Air Traffic Association. Sec Laws and regulations: International Air Traffic Association regulations.

International Commission for Air Navigation. Nur international?

Flugsport, 13. Jahrg., Nr. 3 (2. Feb. 1921), Frankfurt, p. 65.

International Congress of Aerial Navigation. 1st Paris. Reports. Paris, E. Blondel La Rougery [1921], 2 vols., ill.

Inventions. See Barker, Frederick W.: Invention in aeronautics. Inventors. Awards to inventors.

Aeronautics, Vol. 20, n. s., No. 395 (May 12,1921), London, p. 344.

- Concerning some claims by inventors.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 5 (Feb. 2,1921), London, pp. 119-120.

- War awards to inventors.

Flight, No. 631, Vol. 13, No. 4 (Jan. 27, 1921), London, p. 54.

Investigations. Legal action started to bring to light pernicious misrepresentation of a vicious clique which has been making trouble in the aeronautic movement.

Flying, Vol. 9, No. 6 (July 1920), New York, p. 399.

Iowa. See Bombing: Bombing the radio-controlled Iowa.

Ireland. See Mail: The post office and the air mails to Ireland.

Irvin. The Irvin "air chute.

Flying, Vol. 9, No. 5 (June 1920), New York, p. 323, ill.

- See Bryant, L. W., and H. B. Irving: Description of improved moments

measuring apparatus for tests on models in the wind channel with an appendix on the determination of corrections due to interference of apparatus on model.

Irving, H. B. The design of aeroplane control surfaces, with special reference to balancing.

ASron. Journ., Vol. 25, No. 130 (Oct. 1921), London, pp. 537-555, ill., diagrs.

- Design of aeroplane control surfaces, with special references to wing ailerons.

Engineering, Vol. 110 (Oct. 8-22, 1920), London, pp. 461-463, 493-494, 527-528.

Irving, H. B., C. H. Powell, and C. N. Jones. The distribution of pressure on the upper and lower wings of a biplane.

Tech. Kept. Advis. Com. Aeronautics, 1917-18, Vol. 1, London, 1921, pp. 198-217, diagr.

Irving, H. B., and 0. H. Powell. The effect of rounding the wing tips of an aerofoil having a high value of maximum lift coefficient.

Tech. Eept. Advis. Com. Aeronautics, 1917-18, Vol. 1, London, 1921, pp. 177-179.

Irving, H. B., and C. N. Jones. Note on the form and resistance of the spindle used by the N. P. L. for standard tests of 18 by 3 inch aerofoils.

Tech. Bept. Advis. Com. Aeronautics, 1917-18, Vol. 1, London, 1921, pp. 51-53, diagr.

Irving, II. B. Report on the strength of the wings of captured German aeroplanes. Tech. Eept. Advis. Com. Aeranautics, 1917-18, Vol. 3, London, 1921, pp. 818-821, ill.

Irving, H. B., and 0. N. Jones. Standard tests of two aerofoils of Portholme and Albatross sections, and a comparison of these with R. A. P. 15 section.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 1, London, 1921, pp. 149-158, diagr.

Irving, H. B. Variable wing area and variable camber.

Aviation, Vol. 9, No. 1 (Aug. 1,1920), New York, pp. 19-21, charts.

--See Bryant, L. W., and H. B. Irving: Experiments on the effect of altering the

position of the hinges of the elevators for the B. E. 2c aeroplane.

- See Bryant, L. W., and H. B. Irving: Investigation of the flow of air through

the cowling of R. E. 7 aeroplane and of the resistance of a honeycomb radiator.

- See Bryant, L. W., and H. B. Irving: On the cooling of a honeycomb radiator.

- See Bryant, L. W., and H. B. Irving: On the resistance of a honeycomb radiator.

- See Bryant, L. W., and H. B. Irving: Report on an oil cooling honeycomb

radiator taken from a German Zeppelin.

- See Bryant, L. W., and H. B. Irving: Tests of a model of F. E. 4 body and tail.

■—— See Bryant, L. W., H. B. Irving, and W. L. Cowley: Tests of a model seaplane.

- See Bryant, L. W., and H. B. Irving: Tests of a model of F. E. 4 body with a

modified tail system.

•-■ See Bryant, L. W., and H. B. Irving: Tests on model "Bristol" twin tractor

biplane.

■—— See Bryant, L. W., and H. B. Irving: Tests on two models of Caquot kite balloons.

- See Bryant, L. W., and H. B. Irving: Tests of the yawing moment on a mode

of the B. E. 2c machine at small angles of yaw.

- See Bryant, L. W., and H. B. Irving: Tests of vertical fin surfaces at the rear

of different types of body.

Irwin, N. E. Navy opposed to united air service.

Aircraft Journal, Vol. 6, No. 2 (Jan. 10, 1920), New York, pp. 3-4,12, ill.

Isenberg, H. O. C. Hispano-Suiza airplane engine.

American Machinist, Vol. 50 (June 26, July 10, Aug. 7, 21, Sept. 11, Oct. 9, Dec. 25, 1919), New York, pp. 55-58, 259-261, 365-368, 515-519, 703-710, 1091-1096, ill., diagr.

Isle, Rollet deL'. La langue internationale des aviateurs.

L'Aérophile, 28. année, nos. 22-23 (1«-15 nov. 1920), Paris, p. 336.

Isler, G. A. Die Krisis in der Aviatik.

Suisse Aérienne, 2« année, No. 16 (25 août 1920), Berne, pp. 241-242.

- Praktische internationale Luftfahrt.

Suisse Aérienne, 2« année, No. 22 (30 nov. 1920), Berne, pp. 334-335.

Isotta Fraschini. l8otta Fraschini motors.

Aerial Age, Vol. 13, No. 1 (Mar. 14,1921), New York, p. 14.

- Isotta-Fraschini type V-6 engine.

Aviation, Vol. 8, No. 5 (Apr. 1, 1920), New York, pp. 203-204, ill.

---- Les moteurs Isotta-Fraschini.

Aéronautique, 2« année, No. 17 (oct. 1920), Paris, p. 214.

- See Staribacher, Alfred: Der italienische 6-Zylinder 160 PS Isotta-Fraschini

Flugmotor.

Istituto sperimentale aeronautico. Buch-Besprechung.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 2. Heft (31. Jan. 1921), München, p. 26.

- Rendiconti, Jahrg. 9, zweite Reihe . . .

Reviewed in: Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 17. Heft (15. Sept. 1921), München, p. 266.

Italy. Civilian aircraft of Italy.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 5 (Feb. 4, 1920), London, p. 260, ill.

- Le gare di anversa: le vittorie aerostatiche italiane.

L'Aeronautica, anno 3, Num. 5-6 (luglio-agosto 1920), Eoma, p. 239.

- Italian aeronautical conference.

Aeronautics, Vol. 20, n. s., No. 398 (June 2,1921), London, p. 393.

- An Italian aeronautical congress.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 21 (May 25, 1921), London, p. 484.

- Italian aeronautical department.

Aeronautics, Vol. 20, n. s., No. 386 (Mar. 10, 1921), London, p. 175.

- Italian air toutes and ports.

Aviation, Vol. 11, No. 7 (Aug. 15,1921), New York, pp. 190-191.

- Italian air service insignia.

Aviation, Vol. 10, No. 8 (Feb. 21,1921), New York, p. 235, diagr.

—— Italian airship plans.

Aeronautics, Vol. 19, No. 353 (July 22, 1920), London, p. 90.

- The Italian airship Roma.

Aviation, Vol. 8, No. 9 (June 1, 1920), New York, p. 368, ill.

- Italian aviation.

Aerial Age, Vol. 14, No. 41 (Dec. 12,1921), New York, p. 328.

- The Italian balloons of the G. B. race.

Aviation, Vol. 10, No. 9 (Feb. 28, 1921), New York, p. 277, ill.

- Italian Civil Air Department removed.

Aeronautics, Vol. 19, No. 350 (July 1, 1920), London, p. 13.

- Italian competition for small aeroplanes.

Aeronautics,-Vol. 19, No. 355 (Aug. 5, 1920), London, p. 116, ill.

- Italian plane makers seek world aviation sales.

Automotive Industries, Vol. 42 (Apr. 8, 1920), New York, pp. 843-845.

- The Italian "6-meter" competition.

Aviation, Vol. 9, No. 13 (Dec. 13,1920), New York, p. 429.

Italy. Italian semirigid airships observed at front.

Aviation, Vol. 10, No. 11 (Mar. 14, 1921), New York, pp. 341-342, ill.

- Italy's surplus aircraft equipment.

Aviation, Vol. 11, No. 4 (July 25, 1921), New York, p. 110.

- A large Italian flying boat.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 18 (May 4, 1921), London, p. 416.

- A large Italian seaplane.

Aeronautics, Vol. 18, No. 349 (June 24, 1920), London, p. 484, diagr.

- Modern Italian airships.

Flight, Vol. 12, No. 26 (June 24, 1920), London, pp. 663-667, ill.

- New Italian airship.

Aerial Age, Vol. 14, No. 2 (Sept. 19,1921), New York, p. 38. Aeronautics, Vol 20, n. s., No. 402 (June 30, 1921), London, p. 480.

- The new Italian organization of military, naval, and civil aeronautics.

Air Power, Vol. 6, No. 3 (Mar. 1920), New York, pp. 72-82, ill.

- New Italian parachutes.

Aviation, Vol. 11, No. 3 (July 18,1921), New York, p. 80.

- The new Italian Usuelli semirigid airship.

Flight, Vol. 12, No. 40 (Sept. 30, 1920), London, pp. 1044-1045, ill.

•- The poor man's aeroplanes of Italy.

Aer. Eng. Supp. The Aeroplane, Vol. 18, No. 4 (Jan. 21, 1920), London, p. 214, ill.

—— Some new Italian seaplanes.

Aviation, Vol. 11, No. 10 (Sept. 5, 1921), New York, pp. 281-282, ill.

- See Black, A., and D. R. Black: Italians adapt semirigid construction to large

dirigible, the Roma.

- See De Siebert, Roberto: Chief of Italian Army Air Service.

- See Ferrari, Cristoforo: Italian aviation.

•- See Grey, G. C. : French and Italian hydroaeroplanes at Monaco.

- See Guidoni, A.: The Italian semirigid airship Roma.

-■ See Guidoni, A. : What has been done and is being done in Italian aeronautics.

- See Kite balloons: An Italian kite balloon.

- See Knight, Wm.: Italian and French experiments on wind tunnels.

- See McClure, W. K. : Italy's part in the war.

- See P. R. B. I.: A large Italian seaplane.

Ives, Herbert E. Airplane photography.

Philadelphia and London, J. B. Lippincott Co., 1920, pp. 422. Reviewed in: Nature, Vol. 107, No. 2680, March 10,1920, pp. 39-40.

- The Fairchild automatic aerial film camera.

Aerial Age, Vol. 10, No. 20 (Mar. 1, 1920), New York, p. 728, ill.

J.

Jacob, L. La résistance de l'air et l'expérience. Les conséquences.

Encyclopédie scientifique, Paris, Gaston Doin, 1921, T. 1, pp. 316, ill.; T. 2, pp. 272, ill,

Jacobi, B. Elektromotorische Antriebe.

München and Berlin, R. Oldenbourg, 1920, pp. 312, ill.

Reviewed in: Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 13 (15. Juli 1920), Berlin, p. 194.

Jacques Schneider. Jacques Schneider cup regulations for the 1921 contest.

Flying, Vol. 10, No. 4 (May 1921), New York, p. 138.

BIBLIOGRAPHY OP AERONAUTICS, 1920-1921. 2 1 7

Jacques Schneider cup. Jacques Schneider cup. Regulations for the 1921 contest. Aeronautics, Vol. 20, n. s., No. 390 (Apr. 7,1921), London, p. 233.

Jacuzzi. Amerikanischer Jacuzzi Verkehrseindecker.

Flugsport, 13. Jahrg., Nr. 5 (2. März 1921), Frankfurt, pp. 118-119.

-■ Jacuzzi monoplane flight tested.

Aerial Age, Vol. 13, No. 9 (May 9,1921), New York, p. 198.

- Jacuzzi seven-passenger monoplane.

Aviation, Vol. 10, No. 8 (Feb. 21,1921), New York, pp. 228-229, ill. Flight, No. 636, Vol. 13, No. 9 (March 3,1921), London, pp. 147-148, ill.

- See Kauke, John H.: The Jacuzzi seven-passenger monoplane.

Jäger, Kurt. Eine Preisgerichtsentscheidung.

111. Flug-Woche, 3. Jahrg., 17. Heft (17. Aug. 1921), Leipzig, pp. 349-351.

- Haw-Flugzeug und Bremspropeller.

Flugwelt, 2. Jahrg., 24. Heft (24. Nov. 1920), Leipzig, p. 599.

Jahrbuch. Jahrbuch der wissenschaftlichen Gesellschaft fur Luftfahrt. Berlin, Verlag von Julius Springer. 1920,

Jailler, L. ‘No olvidemos a los heroes anónimos!

Tohtli, aüo 5, Núm. 1 (agosto 1920), México, p. 13.

James, P. Les acessories du Salon.

L'Aérophiie, 29. année, Nos. 23-24 (1«-15 déc. 1921), Paris, pp. 367-369, ill.

- Comment se diriger a bord des aéronefs. La radiogoniométrie et la direction

des aéronefs.

L'Aérophiie, 29= année, Nos. 21-22 (1«-15 Nov. 1921), Paris, pp. 332-338, ill.

- Les moteurs au VIIe Salon.

L'Aérophiie, 29. année, Nos. 23-24 (1«-15 déc. 1921), Paris, pp. 363-367, ill.

James, W. S., and S. R. Parsons. Effect of altitude on radiator performance.

Fifth annual report of National Advisory Committee for Aeronautics, Washington, 1920, pp. 265-275, ill.

National Advisory Committee for Aeronautics, Report No. 62, Washington, Government Printing Office, 1920, pp. 13.

James, W. S. Water flow through radiator cores.

Fifth annual report of National Advisory Committee for Aeronautics, Washington, 1920, pp. 307-316, ill.

- See Dickinson, H. C, W. S. James, and R. V. Kleinschmidt: General analysis

of airplane radiator problems.

-- See Dickinson, H. C, W. S. James, and W. B. Brown: General discussion of

test methods for radiators.

- See Dickinson, H. C; W. S. James, and R. V. Kleinschmidt: Heat dissipation and other properties of radiators.

- See Dickinson, H. C; W. S. James; E. W. Roberts; V. R. Gage, and D. R.

Harper, 3d : Power characteristics of aviation gasolines.

- See Dickinson, H. C, W. S. James, and G. V. Anderson: Variation of horsepower with altitude and compression ratio.

- See Dickinson, H. C, W. S. James, and C. V. Anderson: Variation of horsepower with température.

Jane, Frederick T. Jane's all the world's aircraft, 1919.

Edited and compiled by C. G. Grey. London and Edinburgh, Sampson, Low, Marston & Co. (Ltd.), 1920, pp. 700, 1500, ill.

44439—25-15

Jane, Frederick T. All the world's aircraft, 1920.

Edited and compiled by C. G. Grey, London, Sampson Low (Dec. 1920), pp. 364. Aer. Journ., Vol. 25, No. 121 (Jan. 1921), London, p. 2.

- See Grey, C. G.: Jane's all the world's aircraft.

Janssen, J. See Renard, Paul: En mémoire de J. Janssen.

Jaouen. See Doret, Claude: Héros disparus: le sergent Jaouen.

Japan. American-Japanese affairs.

The Aeroplane, Vol. 20, No. 22 (June 1,1921), London, p. 500.

- Aviation in Japan.

Aeronautics, Vol. 19, No. 356 (Aug. 12, 1920), London, p. 134. Aviation, Vol. 10, No. 23 (June 6,1921), New York, p. 723.

-■ British aviation in Japan.

The Aeroplane, Vol. 20, No. 22 (June 1,1921), London, p. 500.

■-■ The British mission to Japan.

The Aeroplane, Vol. 20, No. 12 (Mar. 23, 1921), London, p. 272.

•- Imperial Japanese aviation.

Aerial Age, Vol. 13, No. 9 (May 9,1921), New York, p. 208.

- Japan?

Aviation, Vol. 10, No. 7 (Feb. 14,1921), New York, pp. 201-202.

- Japan multiplying pilots.

Flight, No. 644, Vol. 13, No. 17 (Apr. 28,1921), London, p. 295.

- Japan organizing aerial naval forces.

Aerial Age, Vol. 13, No. 3 (Mar. 28,1921), New York, p. 64.

- Japanese activities.

Aerial Age, Vol. 14, No. 9 (Nov. 7,1921), New York, p. 208.

- Japanese air mail progress.

Aviation, Vol. 9, No. 15 (Dec. 27, 1920), New York, p. 492.

- Japan's aerial efforts.

Aviation, Vol. 10, No. 16 (Apr. 18,1921), New York, p. 187.

- Japan's naval air sendee.

Aviation, Vol. 11, No. 3 (July 18,1921), New York, p. 78.

- Luftverkehrin Japan.

Flugsport, 12. Jahrg., Nr. 2 (19. Jan. 1921), Frankfurt, pp. 38-41, ill.

- On Japan's aeronautical activities and the prospects of the United States.

The Aeroplane, Vol. 20, No. 9 (Mar. 2,1921), London, pp. 197-200.

- On the great Japanese dope joke.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 2 (July 13, 1921), London, pp. 34-36.

- On the yellow race and the British aircraft industry.

The Aeroplane, Vol. 21, No. 5 (Aug. 3,1921), London, pp. 94-95.

- See Bréguet, Louis: Les possibilités immédiates et prochaines de l'aviation

Tokio à un jour de Paris. Declarations de M. Louis Bréguet au diner de la C. S. I. Aé., en l'honneur de la mission Japonaise.

- See Fuji-I-Go: A Japanese two-seater.

Jaqtjerod, A., and Ch. Borel. Sur les variations de densité de rair.

Archives des Sciences Physiques et Naturelles, Vol. 2 (Sept.-Oct. 1920), Genève, pp. 411-413.

Jaquerod, M. A. Recherches négatives sur un nouveau constituant de l'air atmosphérique.

La Nature, Supplément, 48. année, No. 2425 (25 sept. 1920), Paris, p. 97.

Jaray, P. The development of aircraft, with special reference to the Zeppelin airships.

Aviation, Vol. 10, Nos. 14-15 (Apr. 4-11,1921), New York, pp. 424-426, 456-460, ill.

- Studien zur Entwicklung der Luftfahrzeuge unter besonderer Berücksichtigung

Zeppelin-Luftschiffe.

Zeitschr. Flugt. Motorlnftsch., 11. Jahrg., Heft 11 (15. Juni 1920), Berlin, pp. 153-159; Heft 12 (30. Juni), pp. 173-178, ill.

Jardine, Frank, and Ferdinand Jehle. Aluminum pistons.

Aerial Age, Vol. 13, Nos. 10-11 (May 16-23, 1921), New York, pp. 228-229, 250-253.

Jeffery, G. B. Plane stress and plane strain in bipolar coordinates.

Philosophical Transactions, Royal Society of London, Ser. A, Vol. 221, A590, London, 1920, pp. 265-293.

Jeffreys, H. On the relation between wind and distribution of pressure. Proc. Roy. Soc, Vol. 96A, London, pp. 233-249, ill.

Jeffries, Zay. Aluminum alloys.

Aviation, Vol. 9, No. 5 (Oct. 1, 1920)sNew York, pp. 154-157, ill., charts.

JehIjE, Ferdinand. See Jardine, Frank, and Ferdinand Jehle: Aluminum pistons.

Jenkin, Charles Frewen. Address to the engineering section of British Association for the Advancement of Science.

Engineering, Vol. 110 (Aug. 27,1920), London, pp. 290-292.

- . . . Report on materials of construction used in aircraft and aircraft engines,

by Lieut. Col. C. F. Jenkin . . .

London, H. M. Stationery Office, 1920, pp. 162 inch illus., tables, plates, diagrs. At head of title: Aeronautical research committee. Some plates printed on both sides. 1. Aeroplanes. 2. Aeroplanes—Motors. 3. Strength of materials, i. Title. Library of Congress.

- Strength of materials in aeroplane engineering.

Scientific Monthly, Vol. 11 (Oct. 1920), Garrison, N. Y., pp. 325-330.

Jenkins, P. A. World's largest trade school trains mechanics for United States naval air service.

Pop. Mech., Vol. 34 (July 1920), Chicago, pp. 41-44, ill.

Jennings. See Fromentin, J. : Transports aériens et tourisme.

Jezzi, Leo. Pioneers of British aviation—LI: Mr. Leo Jezzi.

Aeronautics, Vol. 19, No. 364 (Oct. 7, 1920), London, pp. 253-254, ill.

JL. JL all-metal airplane comprises novel engineering features.

Auto. Ind., Vol. 43 (Oct. 21, 1920), New York, pp. 808-809, ill.

- JL all-metal monoplane described.

Aircraft Journal, Vol. 6, No. 26 (June 28, 1920), New York, pp. 5-6, ill.

- JL monoplane in 1,200 mile nonstop flight.

Aircraft Journal, Vol. 7, Nos. 2-3 (July 12-19, 1920), New York, pp. 3-4, 7, ill.

JL-6. The log of an aluminum air liner in first passenger flight, New York to Chicago, the JL-6 German metal monoplane beats the Twentieth Century Limited by 12 hours.

U. S. Air Service, Vol. 3, No. 6 (July 1920), New York, pp. 17-19, ill.

- The remarkable performance of JL-6 monoplanes on transcontinental trip.

Aerial Age, Vol. 12, No. 1 (Sept. 13, 1920), New York, p. 20.

JL-12. The JL-12 armored attack airplane.

Aviation, Vol. 11, No. 19 (Nov. 7, 1921), New York, p. 538, ill.

- The JL-12 attack plane.

Aerial Age, Vol. 14, No. 9 (Nov. 7, 1921), New York, pp. 199-200, HI.

JN-6H. Methods of correcting the longitudinal balance of JN-6H airplanes.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 27 (Mar. 31, 1920), Washington, Government Printing Office, pp. 4.

Joachim, Heinz. Feuersicherheit im Luftverkehr.

111. Flug-Woche, 3. Jahrg., 4. Heft (16. Feb. 1921), Leipzig, pp. 71-72.

John Fritz medal. See Wright, Orville: John Fritz medal presented to Orville Wright.

- See Wright, Orville: Orville Wright awarded John Fritz medal.

-■ See Wright, Orville: Presentation of John Fritz medal to Orville Wright.

Johnson, Harry M. Research in the psychology of aviation.

Scient. Amer. Monthly, Vol. 2 (July 1920), New York, p. 84.

- Résumé of research in the psychology of aviation during the year 1919.

Science, n. s., Vol. 51, No. 1323 (May 7, 1920), Garrison-on-Hudson, pp. 449-452.

Johnson, N. K. A report on two pilot balloon ascents made at Shoeburyness.

Air Ministry Meteorological Office, London, Professional Notes No. 13, London, 1920, M. O. 240c, pp. 26, diagrs.

Johnson, Theophilus. Naval aircraft radio, June, 1919.

Navy Department, Bureau of Steam Engineering, Washington, D. C, 1920, pp. 103.

Johnson, V. E. Model aeroplaning. Its practice and principles. London, E. and F. N. Spon., 1920, pp. vii, 275, ill. 1. Rubber driven models. 2. Engine driven models.

Joint Army and Navy Board. See Military aeronautics: Joint Army and Navy Board on Aeronautics. (Gives names of members of board.)

Jones, B. Melville. Flying over clouds in relation to commercial aeronautics. Aeronautics, Vol. 18, No. 335 (Mar. 18, 1920), London, pp. 240-243.

Jones, B. q. Organization of national defense services.

U. S. Air Service, Vol. 5, No. 5 (June 1921), New York, pp. 21-23.

Jones, C. N. See Bryant, L. W., and C. N. Jones: Biplane effect on R. A. F. 15 wing section.

- See Irving, H. B., C. H. Powell, and C. N. Jones: The distribution of pressure

on the upper and lower wings of a biplane.

- See Irving, H. B., and G. N. Jones: Note ontheformand resistance of the spindle

used by the N. P. L. for standard tests of 18 by 3 inch aerofoils.

—— See Irving, H. B., and MÌ3S C. N. Jones: Standard tests of two aerofoils of Portholme and Albatross sections, and* a comparison of these with R. A. F. 15 section.

Jones, E. Lester. Surveying from the air.

Aviation, Vol. 9, No. 9 (Nov. 15, 1920), New York, p. 284. Flying, Vol. 9, No. 10 (Nov. 1920), New York, pp. 616-618, ill.

Jones, E. T. Torpedo controlled by airplane by means of wireless. Wireless Age, Vol. 8 (Oct. 1920), New York, pp. 30-31, diagr.

Jones, J. H. See Sandison, C. G. L>., H. Glauert, and J. H. Jones: Investigation of the downwash behind a biplane.

Jones, Loyd A. A method and instrument for the measurement of the visibility of objects.

London, Edinburgh, and Dublin Philosophical Magazine, Vol. 39, Jan. 1920, London, pp. 96-134.

Jones, Melville. Flying over clouds in relation to commercial aeronautics. Aeron. Journ., Vol. 24, No. 113 (May 1920), London, pp. 220-250, diagr.

Jones, Melville. Over-cloud flying and commercial aeronautics.

Aviation, Vol. 8, No. 10 (June 15,1920), New York, pp. 402-108, diagr.

Jones, Owen. The possibilities of aerial photographic surveys for forest purposes.

Commonwealth of Australia, Science and Industry, Vol. 2, No. 5 (May 1920), Melbourne, Australia, pp. 299-301.

Jones, R., W. L. Cowley, and J. D. Coales. The direction and velocity of flow behind a strut.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 217-218, diagr.

Jones, R., and H. Levy. A study of the flow of air in the neighborhood of an airship shed and screens and the forces and moments brought into play.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 1, London, 1921, pp. 76-85, diagr.

- Tests on a series of large struts of varying fineness ratio.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 176-183.

Jones, R. See Bairstow, Leonard, and R.Jones: The stability of an aeroplane which has springs in its control surface connections.

- See Bairstow, Leonard, E. F. Relf, and R. Jones: The stability of kite balloons:

Mathematical investigation.

- See Bairstow, Ijeonard, E. F. Relf, and R. Jones: Tests on a model kite balloon.

- See Griffiths, E. A., and R. Jones: Effect of modifying the undersurface of

R. A. F. 14 wing section.

- See Nayler, J. L., and R. Jones: The determination of the forces on two struts

in close proximity to one another.

- See Nayler, J. L., and R. Jones: General mathematical investigation of tie stability of the motion of an aeroplane. (V) Numerical illustrations in the case of side slipping without turning.

- See Pannell, J. R., and R. Jones: Experiments on a model of the German rigid

airship L33.

- See Pannell, J. R., and R. Jones: An investigation into the nature of the flow

in the neighborhood of an airscrew.

- See Relf, E. F., and R. Jones: The longitudinal equilibrium of the Caquot type

kite balloon.

- See Relf, E. F., and R. Jones: The longitudinal equilibrium of the Drachen kite

balloon.

- See Relf, E. F., and R. Jones: Tests of a model bomb rack fitted to R. E. 8

machine.

Jones, T. H., and John Drummond Frier. Aeroplane structural design. London, Isaac Pitman & Sons (Ltd.), 1920, pp. 279.

Jongbloed. De " Capronissimo."

Vliegveld, 5» jaarg., No. 8 (9 April 1921), Amsterdam, pp. 116-117, ill.

- Het motorlooze vliegtuig.

Vliegveld, 5s jaarg., No. 18 (27 Aug. 1921), Amsterdam, pp. 250-251; No. 19 (10 sept.) pp. 262-263.

- Het N. A. V. O.-verkeerstoesel.

Vliegveld, 5« jaarg., No. 2 (15 Jan. 1921), Amsterdam, pp. 24-25, ill.

Jordan, F. W. Weltluftverkehr.

Flug, 8, Jahrg., Nr. 23-24 (dez. 1921), Wien, pp. 37-40.

Jordan, S. W. Luftverkehrsprobleme.

Bremen, H. M. Hauschild, 1920.

Reviewed in: Flugwelt, 2. Jahrg., 20. Heft (29. Sept. 1920), Leipzig, p. 514.

Joukowski. See Margoulis, W.: Les ailes Joukowski.

Joux, Etienne. Les dirigeables militaires pendant la guerre.

L'Aérophile, 28. année, Nos. 5-6 (l»r-15 mar. 1920), Paris, p. 76.

Joyce, Temple N. Effects of wind upon the stability and maneuverability of an airplane in flight.

Aviation, Vol. 8, No. 1 (Feb. 1, 1920), New York, pp. 18-19, diagr.

Judge, Arthur W. Aircraft and automobile materials of construction. Vol. 1, ferrous materials.

London and New York, Sir Isaac Pitman & Sons (Ltd.), 1920, pp. 16-739, ill. Treats of stress, strain and elasticity.

- Aircraft and automobile materials of construction. Vol. 2. Nonferrous and

organic materials.

London, Sir Isaac Pitman & Sons (Ltd.), 1921, pp. xii, 594, ill. Reviewed in: Aëron. Journ., Vol. 25, No. 129 (Sept. 1921), London, p. 504.

- Ferrous materials.

London, Isaac Pitman & Sons (Ltd.). 1920,

- Handbook of modern aeronautics.

New York, D. Appleton & Co., 1920, ill.

Jullerot, Henri Marie. Pioneers of British Aviation—XLIV: Maj. Henri Marie Jullerot, A. F. C.

Aeronautics, Vol. 18, No. 349 (June 24, 1920), London, p. 479, ill.

Junkers. The American Junkers S. L-6 commercial monoplane. Some official performance tests.

Flight, No. 645, Vol. 13, No. 18 (May 5,1921), London, p. 315.

- Apparecchi tedeschi.

L'Aeronautica, anno 3, Num. 9 (nov. 1920), Roma, pp. 307-310, ill.

- Constructing metal aeroplanes.

Aeronautics, Vol. 19, No. 373 (Dec. 9,1920), London, p. 420.

•- Englische Betrachtungen und Untersuchungen am Junkers-Metall-Eindecker

D 1.

Flugwelt, 2. Jahrg., 26. Heft (22. Dez. 1920), Leipzig, pp. 610-613, ill.

- Ergebnis der amtlichen Prüfung des Junkers-JI 6-Verkehrseindeckers in den

Vereinigten Staaten.

III. Flug-Woche, 3. Jahrg., 8. Heft (13. Apr. 1921), Leipzig, pp. 149-150.

- 4,000 PS Junkers Eindecker.

Flugsport, 13. Jahrg., Nr. 10 (11. Mai 1921), Frankfurt, pp. 216-217.

—— The Junker all-metal machines.

Aer. Eng. Suppl. The Aeroplane Vol. 18, No. 9 (Mar. 3,1920), London, pp. 468-482, ill., diagr.

- The Junker all-metal monoplane.

Aviation, Vol. 10, No. 15 (Apr. 11,1921), New York, p. 470. Technical Orders No. 9 (Oct. 1919), pp. 123-125, figs.

- Junker metal airplanes.

Aut. Ind., Vol. 42 (Apr. 1, 1920), New York. p. 823.

- The Junker single-seater all-metal monoplane, Type D-I.

Flight, Vol. 12, No. 14 (Apr. 1, 1920), London, pp. 376-380, ill.; Vol. 12, No. 15 (Apr. 8, 1920), pp. 394-396; Vol. 12, No. 16 (Apr. 15, 1920), pp. 419-422.

- The Junkers aerodynamic laboratories.

Aer. Eng., Suppl. The Aeroplane,Vol. 20, No. 17 (Apr. 27, 1921), London, pp. 400-402, diarg.

Junkers. The Junkers armored two-seater biplane. Type J-l.

Aviation, Vol. 8, No. 7 (May 1, 1920), New York, pp. 285-289, ill., diagr.

- Die Junkers-Flugzeuge in Amerika.

Flugwelt, 2. Jahrg., 16. Helt (4. Aug. 1920), Leipzig, p. 437.

- Die Junkers-Verkehrseindecker.

111. Flug-Woche, 3. Jahrg., 14. Heft (6. Juli 1921), Leipzig, pp. 264-269.

- El monoplano Junkers.

Aire, Mar. y Tierra, ano 2, Num. 19 (oct. 1920), Madrid, pp. 594-595, ill.

•- Neue Erfolge von Junkers-Flugzeugen in Amerika.

Luftweg, Nr. 11-12 (24. März 1921), Berlin, p. 85.

- Performance test of Junker SL-6 with 185-horsepower B. M. W. engine.

Aerial Age, Vol. 13, No. 2 (Mar. 21,1921), New York, pp. 35-37.

- Report of the Junker armoured two-seater biplane, Type J. I.

Flight, Vol. 12, Nos. 9-12 (Feb. 26-Mar. 18,1920), London, pp. 229-233, ill., 262-265, 290-293, 315-318.

- Test of all-metal Junkers airplane wing.

Aviation, Vol. 11, No. 17 (Oct. 24, 1921), New York, p. 480, ill.

- ! Su alteza el Junkers!

Tohtli, ano 1, Num. 1 (agosto 1920), Mexico, pp. 7-8, ill.

Junkers, Hugo. Eigene Arbeiten auf dem Gebiete des Metall-Flugzeugbaues.

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 3 (14. Feb. 1920), Berlin, pp. 35-37, ill.

- Männer der Luftfahrt—VII: Professor Hugo Junkers.

Flugwelt, 2. Jahrg., 13. Heft (23. Juni 1920), Leipzig, pp. 350-351, port.

- Personal experiences in constructing metal airplanes.

Aviation, Vol. 9, No. 7 (Nov. 1, 1920), New York, p. 219.

- See Lémonon, E.-H. : Les nouveaux avions métalliques allemands. Les avions

Junkers.

Jutland. Aircraft at Jutland.

Aer. Eng., Suppl. The Aeroplane, Vol. 20, No. 21 (May 25,1921), London, p. 484.

K.

KL. The KL fuel system.

Aerial Age, Vol. 13, No. 22 (Aug. 8,1921), New York, pp. 515-516, ill., diagr. Aviation, Vol. 11, No. 7 (Aug. 15,1921), New York, pp. 201-203, ill., diagr.

K. L. G. A new K. L. G. plug and a rover car for a guess.

Flight, No. 635, Vol. 13, No. 8 (Feb. 24, 1921), London, p. 141, ill.

- Some K. L. G. aviation plugs.

Flight, No. 678, Vol. 13, No. 51 (Dec. 22,1921), London, p. 848, ill.

K. L. M. De K. L. M. op de jaarbeurs.

Vliegveld, 5e jaarg., No. 20 (24 Sept. 1921), Amsterdam, pp. 280-281.

- Opening van de luchtlijnen der K. L. M.

Vliegveld, 5e jaarg., No. 9 (23 Apr. 1921), Amsterdam, pp. 122-123.

Kaemmerer, W. Ein columbisch-deutsches Flugverkehrs-Unternehmen. Luftweg, Jahrg. 4, Heft 44^5 (IS. Nov. 1920), Berlin, pp. 10-11.

Kahn, Julius. An emergency air service appropriation. Mr Kahn's bill calls for the sum of $15,680,625 for planes and equipment.

Aircraft Journal, Vol. 6, No. 4 (Jan. 24, 1920), New York, p. 3.

Kabx, P. R. Der Segelflug.

III. Flug-Woche, 3. Jahrg., 20. Heft (28. Sept. 1921), Leipzig, pp. 401-406

Kahl, R. Luftweg und Schienenweg.

Aut. Flugv., Nr. 7 (Juli 1921), Berlin, pp. 256-257; Nr. 8 (Aug.), pp. 299-300, ill.

Kansas City. American Legion flying meet, Kansas City.

Aviation, Vol. 11, No. 14 (Oct. 3,1921), New York, p. 403.

- Great aeronautical races at Kansas City with prizes amounting to $20,000.

TJ. S. Air Service, Vol. 6, No. 2 (Sept. 1921), New York, pp. 19-20.

KÄB.hän, Th. v. Mechanische Modelle Zum Segelflug.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 14. Heft (30. Juni 1921), München, pp. 220-223, ill.

- Neuere Schraubenfliegerprojekte.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 24. Heft (31. Dez. 1921), München, pp. 360-361, ill.

- Tests made with captive helicopters.

Flight, No. 645, Vol. 13, No. 18 (May 5,1921), London, pp. 307-309, ill.

- Theoretische Bemerkungen zur Frage des Schraubenfliegers.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 24. Heft (3f. Dez. 1921), München, pp. 345-354, ill

- Versuche mit Fesselhubschräubern.

III. Flug-Woche, 3. Jahrg., 14. Heft (6. Juli 1921), Leipzig, p. 270, ill.

Karman-Pbteoczy. The Karman-Petroczy helicopter.

Aeronautics, Vol. 20, n. s., No. 395 (May 12,1921), London, p. 342, diagr.

Kasbeck. Deutsche Flugzeuge über dem Kasbeck 5043 m.

Flugsport, 13. Jahrg., Nr. 23 (9. Nov. 1921), Frankfurt, pp. 495-496, ill.

Kattler-Lachmann. The Kattler-Lachmann wing.

« Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 1 (Jan. 5,1921), London, p. 10.

Katzmayr, R. Bericht über die vii. ordentliche Mitgliederversammlung der Wissenschaftlichen Gesellschaft für Luftfahrt in München-Augsburg 1921. Flug, 8. Jahrg., Nr. 21-^22 (Nov. 1921), Wien, pp. 30-32.

- Einheitliche Formelzeichen und Benennungen in der Aeromechanik.

Sonderabdruck aus den Mitteilungen des staatl. techn. Versuchsamtes, IX. Jahrg. 1920, Heft 1.

Reviewed in: Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 13 (15. Juli 1920), Berlin, p. 194.

- Die Luftschrauben-Prüfanstalt in Fischamend bei Wien.

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 13 (15. Juli 1920), Berlin, pp. 192-194, ill.

——■ See Oesterreichische Flugtechnische Verein: K 10.000—für österreichische Forschungsarbeit.

Kauders, Robert. Vor einem Jahrzehnt.

Luftweg, Nr. 23-21 (6. Juni 1921), Berlin, pp. 185-187, ill.

Kauke, John H. The Jacuzzi seven-passenger monoplane.

Aerial Age, Vol. 12, No. 22 (Feb. 7,1921), New York, pp. 561-562, ill.

Kautny, Th. Leitfaden für Azetylenschweisser. Halle a. S., 1919, ill.

Reviewed in: Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 1 (15. Jan. 1920). Berlin, p. 10.

Kaye, G. W. C, and J. Hudson Davies. An investigation into various types of timber splices for aeroplane construction.

Aeron. Journ., Vol. 24, No. 117 (Sept. 1920), London, pp. 517-525, diagr.

Kaye, G. W. C. See Knox, R., and G. W. C. Kaye: The examination of aircraft timber by X-rays.

Kean, J. B. Radio compass and automatic pilot developed for naval flying boats. Pop. Mech., Vol. 34 (Oct. 7, 1920), Chicago, pp. 485-487, ill., diagr.

Kearney, Norman L. Cable lengths and fitting angles.

Aerial Age, Vol, 10, Nq. 20 (Mar. 1, 1920), New York, pp. 724-725, diagr.

Keary, E. M. See Baker, G. S., and E. M. Keary: Experiments with, models of seaplane floats. Tenth series.

—■— See Baker, G. S., and E. M. Keary: Experiments with models of seaplane floats. Eleventh series. Parts I and II.

Keen, H. R. How aeroplanes are navigated by wireless.

Wireless World, Vol. 7, No. 82 (Jan. 1920), pp. 578-582, flgs.

Keen, R. C6mo se orientan los aeroplanos por la telegrafia sin hilos.

Aire, Mar y Tierra, ano 1, Num. 9 (die. 1919), Madrid, pp. 467-471, ill.

Keller, D. Der Nachtluftverkehr.

Luftweg, Nr. 17-18, (5. Mai 1921), Berlin, pp. 135-138.

Kellett, W. Wallace. Travel by air.

Flying, Vol. 10, No. 2 (Mar. 1921), New York, pp. 60-61.

Kemble, E. 0. The calculated performance of airplanes equipped with supercharging engines.

National Advisory Committee for Aeronautics, Report No. 101, Washington, Government Printing Office, 1921, pp. 52, diagrs.

- Calculation of low-pressure indicator diagrams.

National Advisory Committee for Aeronautics, reprint from the Fourth Annual Report Report No. 50, Washington, Government Printing Office, 1920, pp. 13.

- The probable normal state of the helium atom.

London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, Vol. 42, No. 247 (July 1921), London, pp. 123-133, ill.

Kempe, Erich. Errichtung und Ausbau von Fliegeriachschulen.

Hl. Flug-Woche, 3. Jahrg., 6. Heft (16. März 1921), Leipzig, pp. 99-100.

- Establishment of aviation schools.

Aerial Age, Vol. 11, No. 13 (Dec. 5,1921), New York, pp. 295-296.

- Kempewerk Nürnberg.

111. Flug-Woche, 3, Jahrg., 15. Heft (20. Juli 1921), Leipzig, pp. 322-323.

- Pädagogik und luftfahrt.

Nürnberg, 1920.

Reviewed in: 111. Flug-Woche, 3. Jahrg., 8. Heft (13. April 1921), Leipzig, p. 159.

Kerber, L. V. Airplane performance and design charts.

Aviation, Vol. 10, Nos. 24-25 (June 13-20, 1921), New York, pp. 748-751, 780-784.

Kerber, L. V., and W. F. Gerhardt. A method for determining the angular setting of a tail plane to give balance at any given condition.

Aerial Age, Vol. 12, No. 14 (Dec. 13,1920), New York, pp. 370-373, diagr.

Kerber, L. V. See Gerhardt, W. F., B. E. Boulton, and L. V. Kerber: Preliminary choice of a wing section.

- See Niles, A. S., jr., and L. V. Kerber: Determination of the best wing loading

for single seater pursuit aeroplanes.

Key West. See Commercial aeronautics: Flying boat service from Key West to Havana.

- See Commercial aeronautics: Key AVest-Havana air line inaugurated.

- See Commercial aeronautics: Key West-Havana passenger air line.

Keys, C. M. The Curtiss aeroplane and motor corporation after the war. Aerial Age, Vol. 13, No. 13 (June 6,1921), New York, pp. 295-296, ill.

- The Curtiss corporation after the war.

The Ace, Vol. 2, No. 9 (June 1921), Los Angeles, pp. 9, 25, ill.

Keys, 0. M. Les éstablissements d'aviation Curtiss.

Aéronautique, 3» année, No. 25, 1921, Paris, pp. 227-228.

Kilner, Walter G. D. Air Service, air force, and air power.

TJ. S. Air Service, Vol. 5, No. 4 (May 1921), New York, pp. 16-17.

---■ What we learned in France. Suggestions for training of flying personnel and

organization should this country again be drawn into war.

II. S. Air Service, Vol. 6, No. 1 (Aug. 1921), New York, pp. 11-15.

Kimdley, Field. Captain Field Kindley.

U. S. Air Service, Vol. 3, No. 2 (Mar. 1920), New York, p. 21.

King, James Joseph. Abstracts of the literature on the anatomy and physiology of the semicircular canals.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 3 (Mar. 15, 1920), Washington, Government Printing Office, pp. 70-78.

Kingsley, S. G. Commercial aviation in Uruguay.

Pan American Magazine, Vol. 29 (Oct. 1919), New York, pp. 331-331.

Kinney, E. M. Radio apparatus for aircraft and ground stations.

Proceedings, Engineers' Society of Western Pennsylvania (Feh. 1920), Pittsburgh, pp. 1-24, ill.

Kipling, Rudyard. See Maitland, Edward Maitland: Log of H. M. A. R-34; journey to America and back, with a letter from Rudyard Kipling.

Kirsch. Les records de hauteur. Kirsch et le record de hauteur.

L'Aérophile, 29. année, Nos. 13-14 (1«-15 juil. 1921), Paris, p. 195, port.

Kirsch, Georges. Georges Kirsch ascends to 10,600 meters.

Flight, No. 656, Vol. 13, No. 29 (July 21,1921), London, p. 489. 10,600 meters equals 34,770 feet or over 61 miles.

Kirste, Leo. Flügelauftrieb in Bodennähe.

Flug, Nr. 15-16 (1. Aug. 1921), Wien, pp. 23-24.

- Stresses in a dive.

Aircraft Technical Note No. 176, Department of the Navy, Bureau of Construction and Repair, Washington (Apr. 12, 1920), pp. 5, diagr.

- Ueber die Knickfestigkeit verjüngter Stäbe.

Flug, S. Jahrg., Nr. 21-22 (Nov. 1921), Wien, pp. 27-28.

Kite balloon winch manual.

Air publication 817.

Kite balloons.

The Naviator, Vol. 1, No. 24 (July 31,1920), Pensacola, Fia., p. 1, ill.

- The Avorio-Prassone kite balloon.

Flight, Vol. 12, No. 48 (Nov. 25, 1920), London, pp. 1209-1211, ill.

- An Italian kite balloon.

Aeronautics, Vol. 19, No. 350 (July 1, 1920), London, p. 8, diagr.

- Pursuit protection of kite balloons.

Aircraft Journal, Vol. 7, No. 8 (Aug. 23, 1920), New York, p. 13.

-■ See Bairstow, L., E. F. Reif, and R. Jones: Tests on a model kite balloon.

-■ See Brewer, Griffith: Some kite-balloon experiments.

- See Bryant, L.W., and H.B.Irving: Testsontwo models of Caquot kite balloons.

- See Reif, E. F.: The longitudinal equilibrium of the Caquot kite balloon, fitted

with plane triangular horizontal fins.

-■ See Reif, E. F., and R. Jones: The longitudinal equilibrium of the Caquot type

kite balloons.

Kite balloons. See Reif, E. F., and R. Jones: The longitudinal equilibrium of the Drachen kite balloon.

- See Reif, E. F.: The longitudinal equilibrium of the 1,100 cubic meter Drachen

balloon, and an estimation of the effect of drag of the rigging.

-■ See Simmons, L. F. G., and R. A. Frazer: Model tests on bodies proposed for

use as kite balloons.

- See Sumner, P. H.: The design and stability of streamline kite balloons.

-• See Sumner, P. H.: Streamline kite balloons.

Kites. See Altitude: From kite flying to breaking the altitude record.

- See Frantzen, L.-P.: Les cerfs-volants porte-amarres.

Kiwanis. Kiwanis landing field is ready.

The Naviator, Vol. 1, No. 17 (June 5, 1920), Pensacola, Fla., p. 3.

Klamroth, C. Rechtsumschau: Sturz eines Fliegers auf das Dach eines Wohnhauses—Schadenersatzklage eines Bewohners.

Flugwelt, 2. Jahrg., 15. Heft (21. Juli 1920), Leipzig, p. 420.

Klein, E. Log of a Zeppelin journey.

Living Age, Vol. 305 (Apr. 10, 1920), Boston, pp. 81-85.

Kleinschmidt, R. V., and S. R. Parsons. Head resistance of radiator cores.

Fifth annual report of National Advisory Committee for Aeronautics, Washington, 1920, pp. 247-257, ill.

National Advisory Committee for Aeronautics, Report No. 61, Washington, Government Printing Office, 1920, pp. 22, ill.

Kleinschmidt, R. V. Preliminary report on resistance due to nose radiator.

Fifth annual report of National Advisory Committee for Aeronautics, Washington, 1920, pp. 259-262, ill.

- See Dickinson, H. C., W. S. James, and R. V. Kleinschmidt: General analysis •

of airplane radiator problems.

- See Dickinson, H. C., W. S. James, and R. V. Kleinschmidt: Heat dissipation

and other properties of radiators.

- See Dickinson, H. C, and R. V. Kleinschmidt: Synopsis of aeronautic radiator

investigations for the years 1917 and 1918.

- See Parsons, S. R., and R. V. Kleinschmidt: Effects of nature of cooling surface

on radiator performance.

Klemin, Alexander. Aeronautics in Europe.

Aviation, Vol. 9, No. 7 (Nov. 1, 1920), New York, p. 216.

- American aeronautical progress.

Aircraft Journal, Vol. 6, No. 1 (Jan. 3, 1920), New York, pp. 3-4, 25-28, ill.

- Dynamic lift and ceiling for airships.

Aviation, Vol. 8, No. 12 (July 15, 1920), New York, pp. 466-469, diagr.; Vol. 9, No. 1 (Aug. 1), pp. 16-18, ill.

——■ Impressions of airplanes at the show.

Aviation, Vol. 8, No. 4 (Mar. 15, 1920), New York, pp. 158-162, ill.

- Impressions of the Chicago aeronautical show.

Aviation, VOL 7, No. 12 (Jan. 15, 1920), New York, pp. 522-525, ill.

- Introduction to propeller theory.

Aviation, Vol. 8, No. 4 (Mar. 15, 1920), New York, pp. 152-154, diagr.

- The Klemin amphibious gear.

Aviation, Vol. 10, No. 9 (Feb. 28, 1921), New York, pp. 271-272, 111. Flight, No. 651, Vol. 13, No. 24 (Juno 16, 1921), London, p. 403, 111.

Klemin, Alexander. Landing run and get away for aeroplanes.

Aeronautics, Vol. 13, No. 343 (Hay 13, 1920), London, pp. 373-381, diagr.

- Landing run and get away for standard airplanes.

Aviation, Vol. 8 (Apr. 15, 1920), New York, pp. 247-250.

lourn. Soc. Automotive Engineers, Vol. 6 (Apr. 1920), New York, pp. 231-236, diagr.

- Notes on propeller theory and design.

Aviation, Vol. 8, No. 10 (June 15, 1920), New York, pp. 396-401, diagr.

- Notes on the Pulitzer air race.

Aviation, Vol. 9, No. 12 (Dec. 6, 1920), New York, pp. 382-384, ill.

- Plant of the Aeromarine Plane and Motor Co.

Aviation, Vol. 10, No. 6 (Feb. 7,1921), New York, pp. 171-176, ill.

- What a purchaser of airplanes should know.

Aircraft Journal, Vol. 6, No. 10 (Mar. 6,1920), New York, pp. 3-7, 9-11, ill.

Klemm, R. Luftbildwesen: Ents'tehung und Ausnutzung des Luftraumbildes im Kriege.

Flugwelt, 2. Jahrg., 25. Heft (8. Dez. 192ö), Leipzig, pp. 621-622.

Klemperer, W. Zur Aussprache zum Vortrag Hoff bei der VII. Tagung der WGL in München.

Zeitschr. Flugt. Motorluftsdi., 12. Jahrg., 23. Heft (15. Dez. 1921), München, pp. 338-339.

- Die Bedeutung des Segehiuges für die Entwicklung des Sportflugzeuges.

iii. Flug-Woche, 3. Jahrg., 22. Heft (26. Okt. 1921), Leipzig, pp. 448-450, ill.

- Ein Beitrag zum Spaltflügelproblem.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 20. Heft (31. Okt. 1921), München, pp. 305-308.

- Der Einfluss des Windes auf die "Transportleistung."

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 21. Heft (15. Nov. 1921), München, pp. 318-19.

- Lachmann-Flügel und Segelflug.

Flugsport, 13. Jahrg., Nr. 9 (27. Apr. 1921), Frankfurt, pp. 185-190, ill.

- Ueber die "Gleitzahl" bei Segelflügen.

Zeitschr. Flugt. Motorl., 12. Jahrg., 20. Heft (15. Okt. 1921), München, p. 303.

Klose, R. Eugen. Aus der Werkstatt des Flugtechnischen Vereines: sein Gegenwärtiges Wirken und Streben.

Flug, Sondernummer (Dez. 1920), Wien, pp. 96-103.

Knappen, Theodore Macfarlane. Wings of war; an account of the important contribution of the United States to aircraft invention, engineering, development, and production during the World War.

New York and London, G. P. Putnam's Sons, 1920, xv, 289, ill.

Introduction by Rear Admiral D. W. Taylor.

Knauss, A. C. Efficiency of aluminum leaf on airplane propellers.

Scient. Amer. Monthly, Vol. 1 (Feb. 1920), New York, pp. 124-125.

Knight, William. Italian and French experiments on wind tunnels.

National Advisory Committee for Aeronautics, Technical Notes No. 17, Washington, 1920, pp. 8, diagr.

- The organization of civil aviation along international lines.

Aerial Age, Vol. 12, No. 13 (Dec. 6, 1920), New York, pp. 344-345.

■- Standardization and aerodynamics.

Aerial Age, Vol. 13, No. 15 (June 20, 1921), New York, p. 313.

Knoller, Richard. Männer der Luftfahrt, XV.

111. Flug-Woche, 3. Jahrg., 1. Heft (5. Jan. 1921), Leipzig, pp. 2-3, port.

Knox, R., and G. W. C. Kaye. The examination of aircraft timber by X-rays. Reprinted from the Transactions of the Faraday Society, Vol. XV, Part 1.1919.

Kodak. See Eastman Kodak: Eastman Kodak aerial cameras.

König, Georg. Energiemessungen durch Steig und Gleitflüge.

Zeitschr. Fingt. Motorluftsch., 11. Jahrg., Heft 12 (30. Juni 1920), Berlin, pp. 170-173, ill.

-• Indiziertes Steigvermögen statt Leistungsbelastung.

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 16 (31. Aug. 1920), Berlin, pp. 236-237.

König, Otto Alpenflieger. «

Mitt. Oesterr. Aëro-Clubs, Nr. 10 (1. Okt. 1916), Wien, pp. 130-137.

Kövesdt, Theodor. Die Wahl des Flughafens.

Flug, Sondernummer (Dez. 1920), Wien, pp. 60-61.

Kokomo. The Kokomo aero meet.

Aerial Age, Vol. 14, No. 7 (Oct. 24, 1921), New York, p. 149.

Koleroff, B. T. Possibility of reactive propulsion in air.

Aviation, Vol. 10, No. 20 (May 16,1921), New York, pp. 624-625.

Kolster. Kolster's direction finder.

Wireless Age, Vol. 7, No. 2 (Nov. 1919), pp. 24-25, fig.

Komorozynski-Oszczynski, Otto Ritter v. Der Luftverkehr und seine wirtschaftliche Bedeutung.

Mitt. Oesterr. Aëro-Clubs, 6. Jahrg., Nr. 3 (1. März 1919), Wien, pp. 84-90.

Kondor. Les avions Kondor.

Vie Aérienne, No. 165 (8 janv. 1920), Paris, p. 873.

Koninklltke Nederlandsche Vereeniging voor Luchtvaart, 's-Gravenhage. For officiai notices, see Het Vliegveld.

Konrich, G. F. Im Fesselballon an der Front.

Mitt. Oesterr. Aëro-Clubs, Nr. 12 (1. Dez. 1917), Wien, pp. 341, 342, 345, ill.

Ko ok, E. Simple means for saving fuel on traffic flights.

Aerial Age, Vol. 13, No. 19 (July 18,1921), New York, pp. 439-441..

Korea. Air conditions over Korea sickens flyers.

The Naviator, Vol. 1, No. 24 (July 31, 1920). Pensacola, Fia., p. 6.

Koretfber. Das Boerner-Luftschiff.

111. Flug-Woche, 3. Jahrg., 5. Heft (2. März 1921), Leipzig, pp. 86-88, ill.

- Die Entwicklung der deutschen M-Luftschiffe.

Luftweg, Jahrg. 4, Heft 40-41 (21. Okt. 1920), Berlin, pp. 4-7, ill.

- Die Entwicklung der deutschen Pralluftschiffe.

Flugwelt, 2. Jahrg., 22. Heft (29. Okt. 1920), Leipzig, pp. 546-550, ill.

Korvin-Kroukovsky, B. V. Correction of the aerofoil characteristics for aspect ratio.

Aerial Age, Vol. 14, No. 15 (Dec. 19,1921), New York, pp. 343-344.

- Distribution of load over wing tips and stress analysis.

Aviation, Vol. 11, No. 24 (Dec. 12,1921), New York, p. 678.

Koschel. Ueber einen Absprung mit dem Fallschirm.

Mitt. Oesterr. Aëro-Clubs, Nr. 1 (1. Jan. 1918), Wien, pp. 17-22, ill.

Koschmieder, II. Zur Bodenorganisation des Postluftverkehrs. Luftweg, Nr. 45-46 (17. Nov. 1921), Berlin, pp. 318-319.

Kosciusko Escadrille. Deeds of the Kosciusko Escadrille.

Aviation, Vol. 9, No. 10 (Nov. 22, 1920), New York, p. 318.

- The Kosciusko Squadron. America's air fighters in the Polish Republic.

U. S. Air Service, Vol. 3, No. 2 (Mar. 1920), New York, pp. 16-17, ill.

Kostiwal, Hans. Der amerikanische Höhenweltrekord.

Flug, 8. Jahrg., Nr. 23-24 (Dez. 1921). Wien, pp. 40-41.

Kostiwal, Hans. Bezeichnung ehemaliger österreichisch-ungarischer Kriegsflugzeuge.

Flug, 8. Jahrg., Nr. 17-1S (1. Sept. 1921), Wien, pp. 27-29.

- Einige typische Sport-(Klein-) Plugzeuge.

Flug, Sondernummer (Dez. 1920), Wien, pp. 120-127.

•- Der österreichische Albatros (Oeffag) D III., Kampfeinsitzer.

Flug, 8. Jahrg., Nr. 17-18 (1. Sept* 1921), Wien, pp. 25-27, ill.

•- Sportliches Fliegen.

Flug, 8. Jahrg., Nr. 15-16 (1. Aug. 1921), Wien, p. 26.

- Unser Sportflugzeug.

Flug, 8. Jahrg., Nr. 7-8 (1. Apr. 1921), Wien, pp. 9-12, ill.

- Unsere Brandenburger Flugzeuge.

Flug, 8. Jahrg., Nr. 15-16 (1. Aug. 1921), Wien, pp. 24-26, ill.

•—- Unsere Flugmotoren.

Flug, 8. Jahrg., Nr. 21-22 (Nov. 1921), Wien, pp. 28-30.

Kotjtchino. Bulletin de l'Institut Aérodynamique de Koutchino. Fax. VI. Paris, 1920, Gauthier-Villars et Cie.

Keahmbr. Automatische Luftbildmessung.

Luftweg, Nr. 43-44 (3. Nov. 1921), Berlin, pp. 305-308.

Krall, Oswald. Die Windverhältnisse über der italienischen Küste der Nordadria, und insbesondere über Fano im Jahre 1914.

Mitt. Oesterr. Aëro-Clubs, Nr. 7 (1. Juli 1917), Wien, pp. 162-169, diagrs.

- Die Windverhältnisse über Vieste und Tarent im Jahre 1914.

Mitt. Oesterr. Aëro-Clubs, Nr. 12 (1. Dez. 1917), pp. 334-335, 341, diagrs., tabl.

Kramer. The "Kramer-vaporiser."

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 5 (Feb. 4,1920), London, p. 276, ill. Aeronautics, Vol. 18, No. 326 (Jan. 15, 1920), London, p. 57, ill.

Kraus, Adolf. See Berger, Josef Viktor: Ingenieur Adolf Kraus.

Kreiner, Artur. Bombenwürfe aus Luftfahrzeugen.

Mitt. Oesterr. Aëro-Clubs, Nr. 9 (1. Sept. 1915), Wien, pp. 7-8.

Kropp. Drei Jahre zur Luft.

Berlin, Harke's press-büro, 1921.

Noted in: III. Flug-Woche, 3. Jahrg., 13. Heft (22. Juni 1921), Leipzig, p. 259.

Krupp, G. Internationale aeronautische Ausstellung in Prag.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 22. Heft (30. Nov. 1921), München, p. 326, ill.

Kuhn, Arthur K. The international regulation of aerial navigation.

Reprint from Proceedings American Society of International Law, 15th annual meeting, Washington, April 27-30, 1921, pp. 77-82.

Kumbruch, H. Similitude tests on wing sections.

Technical Notes, National Advisory Committee for Aeronautics, No. 53 (Apr. 1921), Washington (mim.), pp. 17, diagrs.

Kutzbach, K. Experience with geared propeller drives for aviation engines.

National Advisory Committee for Aeronautics, Technical Notes No. 16, Washington, 1920, pp. 13, diagr.

Translated from Technische Berichte, Vol. 3, Sec. 3, by Starr Truscott.

Aerial Age, Vol. 12, Nos. 17-18 (Jan. 3-10, 1921), New York, pp. 442-445; 466-469, diagr.

- Prüfung, Wertung und Weiterentwicklung von Flugmotoren. Von H. De-

champ3 und K. Kutzbach.

Berlin, Richard Carl Schmidt & Co., 1921, pp. 264, ill.

Reviewed in : Zeitschr. Flugt. Motorluftsch, 12. Jahrg., 17 Heft (15. Sept. 1921), München, p. 265.

L.

L. B. The "L. B." aero camera.

Flight, No. 650, Vol. 13, No. 23 (June 9,1921), London, pp. 390-391, ill.

L., E. M. Les origines des moyens de locomotion.

Vie Aérienne, No. 176 (25 mars 1920), Paris, pp. 1062-1063.

L. F. G. Das L. F. G.-V 3a-Flugboot.

Luftweg, Nr. 3-4 (27. Jan. 1921), Berlin, pp. 19-20.

L. F. G-V3a. The L. F. G.-V3a flying-boat.

Aeronautics, Vol. 21, n. s., No. 403 (July 7, 1921), London, p. 16, ill.

L. 64. "L. 64" and "L. 71." Two of the Zeppelins surrendered to Great Britain.

Flight, Nos. 631-632, Vol. 13, Nos. 4-5 (Jan. 27-Feb. 3, 1921), London, pp. 55-58, 80-84, ill.

L., P. F. Le parachute dans les services aériens postaux.

L'Aérophile, 28. année, Nos. 5/6 (1»'~15 mars 1920), Paris, p. 82.

L. W. F. The L. W. F. aerial freighter.

Aeronautics, Vol. 18, No. 338 (Apr. 8,1920), London, p. 300.

- The L. W. F. Owl freight plane.

Aviation, Vol. 8, No. 3 (Mar. 1, 1920), New York, pp. 103-104, ill.

L. W. F. "Owl." The 1,200-horsepower L. W. F. "Owl."

Flight, No. 642, Vol. 13, No. 15 (Apr. 14,1921), London, p. 258-259, ill. L 71. See Mihtary aeronautics: The surrender of "L 71."

La Porte, M. F. Sondages de l'atmosphère à gâvre au moyen de ballons libres en caoutchouc.

C. R. Acad. Sei., T. 170, No. 5 (févr. 2, 1920), pp. 279-282.

La Pradelle, Albert de. L'aéronautique et les relations internationales. Aéronautique, 3» année, No. 30 (nov. 1921), Paris, pp. 431-432.

La Vatjlx. Le ballon libre.

Vie Aérienne, 5= année, No. 1 (5 août 1920), Paris, p. 10, port.

La Vatjlx, Henry de. Lettre ouverte à Pierre-Étienne Flandin.

L'Aérophile, 29. année, Nos. 23-24 (1»'-15 déc. 1921), Paris, p. xx.

- Les vainqueurs de l'air.

Paris, Hachette, 1920.

Reviewed: in Aéronautique, 3« année, No. 31 (déc. 1921), Paris, p. 524. Laboratories. See Caldwell, F. W.: Propeller testing laboratory at McCook field.

- See Chase, H.: Laboratory for aircraft engine testing.

- See Eiffel: Études sur l'aérodynamique faites au laboratoire aérodynamique

Eiffel, de 1815 à 1918.

- See Eiffel, G.: Résumé des principaux travaux exécutés pendant la guerre au

laboratoire aérodynamique Eiffel.

- See Junkers: The Junkers aerodynamic lagoratories.

- See St. Cyr.: Aero technical Institute of St. Cyr.

Labric, Roger. Comment fut vengé Pégoud.

Vie Aérienne, 5« année, No. 7 (18 sept. 1920), Paris, pp. 109-110, ill.

Lachenbruch, Jerome. The aeroplane displaces the automobile in the motion picture.

Aerial Age, Vol. 11, No. 2 (Mar. 22, 1920), New York, pp. 53, 57, ill.

Lachmann. L'aviation autrichienne pendant la guerre.

Vie Aérienne, No. 184 (20 mai 1920), Paris, pp. 1159-1160, ill.

Lachmann. The German Lachmann slotted aerofoil. Göttingen tests on a model. Flight, No. 641, Vol. 13, No. 14 (Apr. 7,1921), London, p. 242, ill., diagrs.

- The Lachmann aerofoil.

Aerial Age, Vol. 12, No. 22 (Feb. 7,1921), New York, p. 560.

- The Lachmann wing.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 14 (Apr. 6, 1921), London, p. 332.

Lachmann, G. Bas unterteilte Flächenprofil.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 11. Heft (15. Juni 1921), Müchen, pp. 164-173, ill.

- Die unterteilte Profilform.

Flugsport, 12. Jahrg., Nr. 1 (5. Jan. 1921), Frankfurt, pp. 2-6, ill.

- Ein Vortrag von Handley-Page über das unterteilte Profil.

Flugsport, 13. Jahrg., Nr. 6 (16. März 1921), Frankfurt, pp. 126-141, ill.

- See Handley Page: The Handley-Page wing and Germany.

Lacoin, Louis. Construction et rélage du moteur à explosion appliqué à l'automobile et à l'aviation.

Paris, Librairie de l'Enseignement technique, Léon Eyrolles, éditeur, 1921, pp. 502, ill.

Ladd, Story B. Aeronautic roads.

Aerial Age, Vol. 13, No. 24 (Aug. 22, 1921), New York pp. 563-564, ill., map.

Laddon. Report on wind tunnel test of Laddon night pursuit airplane.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 33 (May-5,1920), Washington, Government Printing Office, pp. 10, diagr.

Lafayette Flying Corps. See Roosevelt, Philip J. : The Layfayette Flying Corps— an epic of the air.

Laffont, J. Le vol sans moteur.

La Nature, 48. année, 1« sem., No. double 2406, 2407 (22 mai 1920), Paris, pp. 276-279, ill.

Lafranc, Jean-Abel. Le salon de 1'aeronautique.

Nature, No. 2393 (Feb. 7, 1920), Paris, pp. 86-92, figs.

Lagarde-Martinot. L'huile de ricin.

Aéronautique, 2e année, No. 17 (oct. 1920), Paris, pp. 187-190.

Lagorgette, Jean. Les avions allemands.

Paris, 1920, E. Blondel delà Bougery, 214 pp., ill.

Lagrange, L. Le concours d'avions de transport du S. N. Aé. Un nouvel avion commercial à grande capacité de transport. Le Goliath trimoteur satisfait brillamment aux épreuves.

L'Aérophile, 29e année, Nos. 9-10 (1«-15 mai 1921), Paris, pp. 131-132, ill.

Laird. The Laird "Swallow."

Aerial Age, Vol. 12, No. 9 (Nov. 8,1920), New York, pp. 253, 259, ill., diagr. Aviation, Vol. 9, No. 4 (Sept. 15, 1920), New York, pp. 119-120.

- Laird Swallow reaches coast.

The Ace, 'Vol. 2, No. 9 (June 1921), Los Angeles, p. 13, ill.

Laird, E. M. How E. M. Laird built and flew a 12-horsepower plane in 1913. Aerial Age, Vol. 14, No. 10 (Nov. 14,1921), New York, p. 233.

- Specification for E. M. Laird models.

Aircraft Journal, Vol. 6, No. 7 (Feb. 14, 1920), New York, p. 10, ill.

Lake Garda, Italy. Aviation meet on Lake Garda, Italy.

Aerial Age, Vol. 14, No. 14 (Dec. 12,1921), New York, p. 328.

- See Annunzio, Gabriele d' : International aviation meet on Lake Garda for the

Gabriele d'Annunzio cup.

Lakehtjrst. Details of the Lakehurst airship station.

Aviation, Vol. 11, No. 8 (A-»g. 22,1921), New York, p. 231, ill.

- The Lakehurst naval airship station.

Aviation, Vol. 11, No. 5 (Aug. 1,1921), New York, p. 138.

- Navy builds great hangar for new type of dirgibles.

The Naviator, Vol. 1, No. 23 (July 24, 1920), Pensacola, Fia., p. 5.

- United States Navy record breaker. Largest dirigible hangar in the world

now building at Lakehurst, N. J.

The Naviator, Vol. 1, No. 5 (Mar. 13, 1920), Pensacola, Fia., p. 7, ill.

Lallier, Roger. Le confort en avion.

Aéronautique, 3« année, Nos. 28, 29 (sept.,-août 1921), Paris, pp. 371-374, 415-417, ill.

- Le vieux coucou. Histoire d'un avion de Védrines.

L'Aérophile, 29. année, Nos. 7-8 (le'-15 avril 1921), Paris, p. xviii.

Lamb, H. Higher mechanics.

Cambridge, University Press, 1920, pp. x+272.

Lambert. Le3 hydroglisseurs de Lambert.

Aéronautique, 2« année, No. 16 (sept. 1920), Paris, pp. 152-154, ill; 3« année, No. 30 (nov. 1921), p. 482, ill.

Lamblanc, Lotjis. Brest-New York en vingt heures.

Vie Aérienne, No. 191 (8 juil. 1920), Paris, pp. 1214-1220, ill.

Lamblin. The Lamblin radiator.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 3 (Jan. 19,1921), London, p. 66, ill. Aerial Age, Vol. 13, No. 6 (Apr. 18,1921), New York, p. 134.

- Le refroidissement des moteurs d'avions. Les radiateurs Lamblin.

L'Aérophile, 29. année, Nos. 1-2 (1"-15 j'anv. 1921), Paris, pp. 26-28, ill.

- See Radiators: The Lamblin radiator.

Lamé, M. Étude sur la résistance fournie par les hélices tournant dans un courant d'air. Qualité parachutale des hélices sustentatrices.

L'Aérophile, 29. année, Nos. 1-2 (let-15 janv. 1921), Paris, pp. 5-7, tables.

- Hélicoptères et avions-hélicoptères.

Aéronautique, 3« année, Nos. 18-19 (janv. 1921), Paris, pp. 277-281, ill.

- Note sur les hélices sustentatrices.

L'Aérophile, 29. année, Nos. 11-12 (1«-15 juin 1921), Paris, pp. 178-179, ill.

- Opinions sur les hélicoptères. Cie que sera l'avion de demain.

L'Aérophile, 29« année, Nos. 19-20 1« (15 Oct., 1921), Paris, pp. 300-302, ill.

- Le principe d'Archimède et le plus lourd que l'air.

L'Aérophile, 28. année, Nos. 19-20 (1^-15 oct. 1920), Paris, p. 313.

- Vers la sécurité, hélicoptères et avions-hélicoptères.

Aéronautique, 3« année, Nos. 19-20 (janv. 1921), Paris, pp. 277-281, ill.

- Vers la sécurité; la sustentation indépendante. Quelques hélicoptères actuels:

Crocker-Hewitt, Alérion, Pescara, Oehmichen.

L'Aérophile, 29. armée, Nos. 2-3 (1«-15 févr. 1921), Paris, pp. 46-49, ill.

Lamoreatjx, L. P. Flying characteristics of training planes.

Aircraft Journal, Vol. 6, No. 23 (June 7, 1920), New York, pp. 3-4.

Lanohester, F. W. Flying as affected by the wind.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 1157-115S, diagr

- High altitude flying.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 1182-1184.

44439—25-16

Lanchesteb, F. W. Memorandum on the use of aluminum alloy sheet in place of fabric for aeroplane wings, etc.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 1068-1069.

- Pioneers of British aviation—XXXVIII: Mr. F. W. Lanchester, M. Inst. C. E.

Aeronautics, Vol. 18, No. 340 (Apr. 22, 1920), London, p. 325.

- Report on high altitude flying and the development and improvement of the

aeronautical motor.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 351-371.

- Torsional vibrations of the tail of an aeroplane.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 458-460, diagr

Lancia. The 320-horsepower Lancia aeroplane engine.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 15 (Apr. 14, 1920), London, pp. 778, 780, ill.

Landfall. Atterissage d'avion sur cuirassé.

Aéronautique, 2« année, No. 18 (nov.-déc. 1920), Paris, pp. 259-260, ill.

- Aerodromes and landing grounds.

Flight, Vol. 12, No. 8 (Feb. 19, 1920), London, p. 202.

- Automatic landing indicator.

Aeronautics, Vol. 20, n. s., No. 390 (Apr. 7,1921), London, p. 248.

- Automatic landing "T" big aid to airmen.

Aerial Age, Vol. 10, No. 21 (Mar. 8, 1920), New York, p. 796.

- Great problem of landing.

Scient. Amer. Monthly, Vol. 1 (Feb. 1920), New York, p. 132, ill.

- Guide for fliers who make forced landings.

Aerial Age, Vol. 13, No. 1 (Mar. 14,1921), New York, p. 5.

- Looking and landing.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 19 (May 11, 1921), London, p. 440.

- On landings, doctors, and things.

The Aeroplane, Vol. 20, No. 10 (Mar. 9,1921), London, pp. 221-222.

- The reduction of landing speeds.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 14 (Apr. 6,1921), London, pp. 332-334.

•- Safety in landing an important factor.

Aircraft Journal, Vol. 6, No. 25 (June 21,1920), New York, p. 6.

- See Courtney, F. T. : Airbrakes and the sideslip landing.

- See Hill, R. M.: The manoeuvres of getting off and landing.

- See Klemin, Alexander: Landing run and get away for standard airplanes.

- See Merrill, Albert A.: Variation in resultant pressure upon landing due to the

proximity of the earth.

- See Military aeronautics: How airplanes land on decks of warships.

Landing fields. Government should provide landing fields.

Aircraft Journal, Vol. 6, No. 23 (June 7, 1920), New York, p. 5.

■- Landing field conditions along the Mexican border.

Aircraft Journal, Vol. 7, No. 6 (Aug. 9, 1920), New York, pp. 3-1.

- Landing fields.

The Naviator, Vol. 1, No. 10 (Apr. 17, 1920), Pensacola, Fia., p. 4.

•- Landing fields are a major problem in development of air traffic.

Aut. Ind., Vol. 43 (Nov. 4, 1920), New York, pp. 928-929, diagr.

- Landing fields needed.

Journ. Soc. Automotive Engineers, Vol. 6, No. 6 (June 1920), New York, p. 424.

Landing fields. The marking of landing fields.

Aircraft Journal, Vol. 6, No. 18 (May 1,1920), New York, p. 9.

- Municipal landing fields.

The Ace, Vol. 2, No. 5 (Dec. 1920), Los Angeles, p. 12. Survey, Vol. 45 (Oct. 16, 1920), New York, p. 95.

- Over 1,200 landing fields listed in the United States.

Journ. Soc. Automotive Engineers, Vol. 6, No. 5 (May 1920), New York, p. 307.

•-■ Progress in air awaits suitable landing fields.

Aircraft Journal, Vol. 6, No. 26 (June 28, 1920), New York, p. 14.

- See Hickman, H. M.: Municipal landing fields.

- »See Wentworth, R. Preston: Have you a little landing field in your community?

Landing gears. Ski landing gears for airplanes.

Aviation, Vol. 8, No. 9 (June 1, 1920), New York, p. 369, ill., diagr.

-- See Floats: Collapsible floats for aeroplanes.

- See "A Merchant:" The stresses in the undercarriage of an aeroplane.

- See North, John D.: Aircraft undercarriages.

Landis, R. G. Rich man, poor man, beggar man.

Collier's, Vol. 65 (Jan. 3, 1920), New York, p. 30. Commercial aeronautics.

- Why we all shall fly.

Collier's, Vol. 65 (Jan. 10, 1920), New York, p. 48.

Landon, W. G. Factors affecting flight.

Aerial Age, Vol. 13, No. 3 (Mar. 28, 1921), New York, pp. 55-56.

--That hawk again.

Atlantic Monthly, Vol. 126 (Dec. 1920), Boston, pp. 814-815.

"Langley." The American aircraft carrier "Langley."

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 6 (Feb. 9,1921), London, pp. 138-140.

- Flying freight.

Aerial Age, Vol. 12, No. 24 (Feb. 21,1921), New York, p. 603.

- See Whiting, Kenneth: The Langley—a floating airdrome.

Langley, Samuel Piekpont. Dr. S. P. Langley's early experiments. Aerial Age, Vol. 13, No. 3 (Mar. 28, 1921), New York, p. 65.

- The first plane in flight.

Aerial Age, Vol. 13, No. 10 (May 16,1921), New York, p. 219.

- The Langley airplane.

World's Work,»Vol. 43, No. 2 (Dec. 1921), Garden City, pp. 128-130.

- A nearly forgotten chapter in the history of aviation.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 11 (Mar. 16,1921), London, p. 260, ill.

- See Brewer, Griffith: The Langley machine and the Hammondsport trials.

- See Caro, I.: Aviones que no volaron.

- See Commercial aeronautics: Flying freight.

Langley Field. Mobilizing at Langley Field for bombing.

Aviation, Vol. 10, No. 13 (Mar. 28, 1921), New York, p. 394.

- See Bacon, D. L.: Langley Field wind tunnel apparatus.

- See Norton and Bacon: N. A. C. A. Langley Field wind tunnel apparatus.

The tilting manometer.

Langley Field tunnel. -See Norton, F. H., and D. L. Bacon. The optical wing angning device of the Langley Field tunnel.

Langley machine. See Curtiss, Glenn H. : The Langley machine at Hammondsport.

Lanqneh, H. Die Geschichte einer Mars-Expedition.

Luftweg, Nr. 30-10 (6. Okt. 1921), Berlin, pp. 287-290; Nr. 41-42 (20. Okt.) pp. 298-300; Nr. ' 43-44 (3. Nov.), pp. 309-312, ill.

Langsdorff, Werner v. Rhön-Segelflug-Wettbewerb 1921.

Hl. Flug-Woche, 3. Jahrg., 21. Heft (12. Okt. 1921), Leipzig, pp. 428-430, ill.

Zeitschr. Flugt. Motorluftsch,12. Jahrg., 18. Heft. (30. Sept. 1921), München,pp. 278-281,ill.

-■ Die Segelflüge in der Rhön nach dem Wettbewerb.

Luftweg, Nr. 47-4S (1. Dez. 1921), Berlin, pp. 329-331.

Lepresle, A. Les propriétés caractéristiques de l'air aux hautes altitudes d'après les travaux de l'Observatoire Aéronautique de Lindenberg.

L'Aérophile, 28. année, Nos. 5/6 (l«-15mars. 1920), Paris, pp. 66-71.

- The question of tandem propellers.

Aviation. Vol. 11, No. 24 (Dec. 12,1921), New York, pp. 679-680, ill.

-• Resultats acquis sur la question ed l'hélice aérienne.

L'Aérophile, 29* année, Nos. 19-20 (1«-15 Oct. 1921), Paris, pp. 305-312, ill.

Largest American airplane.

Everyday Engineering Magazine, Vol. 9, No. 4 (July 1920), New York, pp. 328, ill.

Larmtjth, Luke Hamilton. Airship sheds and their erection.

The Engineer, Vol. 131, No. 3407 (Apr. 15,1921), London, p. 412.

Larsen. The Larsen aerial efficiency trophy.

Aviation, Vol. 11, No. 17 (Oct. 24, 1921), New York, p. 479, ill,

- Larsen flight aids commercial aviation.

Aircraft Journal, Vol. 7, No. 10 (Sept. 6, 1920), New York, p. 6.

- Larsen planes carry mail to San Francisco.

Aircraft Journal, Vol. 7, No. 6 (Aug. 9, 1920), New York, p. 6.

- Larsen trophy race. Contest committee report. Omaha, Nebr., Nov. 5, 1921.

Aerial Age, Vol. 14, No. 14 (Dec. 12,1921), New York, p. 317.

Larsen, Carl N. A new type of rebreather and other respiratory apparatus.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 99, Pt. 2 (Aug. 15, 1920), Washington, Government Printing Office, pp. 8-15, diagr.

- See Ellis, Max M., and Carl N. Larsen: A device adapting the Barany chair to

rebreather tests.

Larsen, JL. 6. American all-metal machine.

Aeronautics, Vol. 19, No. 352 (July 15, 1920), London, p. 61.

Lascurain y Osio, A. de. Importancia comercial del servicio aéreo. Tohtli, ano 5, Num. 3 (oct. 1920), Mexico, pp. 108-111, ill.

Latécoére. Les avions Latécoère.

Aéronautique, 3« année, No. 30 (nov. 1921), Paris, pp. 46S-469, ill.

Lateral control. See Control.

Latham. L'hydravion tri-moteur "Latham"

Aéronautique, 2e année, No. IS (nov.-déc. 1920), Paris, pp. 218-220, ill.

- Le voyage aérien du lieutenant de vaisseau Lefranc.

Aéronautique, 1« année, No. 10 (mars 1920), Paris, pp. 423-424, ill.

Latham, Jean. See Blanchet, Georges: Un éclatant succès pour la technique française . . .

Latham, P. Les hydravions mixtes.

Aéronautique, 2» année, No. 13 (juin 1920), Paris, pp. 25-26, ill.

Launching. America tries catapult launching.

Flight, No. 671, Vol. 13, No. 44 (Nov. 3, 1921), London, p. 715.

- A compressed-air-operated catapult for launching airplanes from ships.

Compressed Air Magazine, Vol. 25, No. 1 (Ian. 1920), p. 9502, figs.

- See Gundry, P. G. : The effect of temperature and altitude of aerodrome in the

taking off of aeroplanes.

- See Navy: New naval catapult launching device.

Laurent-Eynac. La place de l'aéronautique dans une grande nation. Aéronautique, 3= année, No. 30 (nov. 1921), Paris, pp. 432-434.

Lavender, T. See Griffiths, E. A., and T. Lavender: Effect of convex undersur-faces on aerofoils.

- See Reif, E. F., and T. Lavender: Tests on a complete model of R. E. 8.

Lavergne. French aviation in 1921.

Aviation, Vol. 10, No. 24 (June 13,1921), New Y'ork, pp. 745-747.

Lawrance. Lawrance L-2 air-cooled motor.

Aircraft Journal, Vol. 6, No. 14 (Apr. 3, 1920), New York, pp. 7-8, diagr.

- The Lawrence indoor tractor model.

Aerial Age, Vol. 13, No. 129 (May 30, 1921), New York, p. 231, diagr.

Lawrence, Ted. The leader of "A " flight.

Air Power, Vol. 6, No. 6 (June 1920), New York, pp. 170-171, ill.

Laws. Aeronautical and aerographic law.

Aircraft Journal, Vol. 6, No. 11 (Mar. 13, 1920), New York, p. 17.

- Air laws.

Aerial Age, Vol. 13, No. 26 (Sept. 5, 1921), New York, p. 607.

- Air legislation pending.

Aerial Age, Vol. 13, No. 6 (Apr. 18,1921), New York, pp. 133, 139.

- The air navigation bill.

The Aeroplane, Vol. 18, No. 20 (May 19, 1920), London, pp. 985-986.

— The air service and Army reorganization act.

Aircraft Journal, Vol. 6, No. 26 (June 28, 1920), New York, pp. 3-4.

- Aviation and its relation to the law.

Aircraft Journal, Vol. 6, No. 21 (May 24, 1920), New York, p. 6.

- International air laws.

Aerial Age, Vol. 14, No. 4 (Oct. 3,1921), New York, p. 75.

- Résumé of progress of aeronautic matters in Congress.

Aerial Age, Vol. 13, No. 15 (June 20, 1921), New York, p. 342.

Laws and ordinances. State and local air laws and ordinances.

Aviation, Vol. 10, No. 19 (May 9,1921), New York, pp. 591-592.

Laws and regulations. L'aéronautique au Parlement.

L'Aérophile, 28. année, Nos. 13-14 (1«-15 juil. 1920), Paris, p. 201-203.

- Air law curiosities in America.

The Aeroplane, Vol. 20, No. 21 (May 25, 1921), London, p. 494.

- Air traffic laws.

The Naviator, Vol. 1, No. 1. (Feh. 14, 1920), Pensacola, Fia., p. 3.

- All aviators said to be trespassers of the air.

Literary Digest. Vol. 66 (Aug. 14, 1920), New York, pp. 78-80.

Laws and regulations. Anglo-Danish air navigation regulations.

Aeronautics, Vol. 20, n. s., No. 391 (Apr. 14, 1921), London, p. 266.

- Arrête royal réglementant la navigation aérienne en Belgique.

La Conq. l'Air, 3» année, No. 1 (1" janv. 1920), Bruxelles, pp. 7-11.

- Bundesratsbeschluss betreffend die Ordnung des Luftverkehrs in der Schweiz.

Bull. Aéro-Club Suisse, No. 1-2 (janv.-íévr. 1920), Berne, pp. 12-19.

- Certificati di navigabilità.

Rivista marittima (nov.-dic. 1920), Roma, pp. 21-25.

- Disposiciones gubernativas sobre aviación.

Aire, Mar y Tierra, año 2, Núm. 12 (marzo 1920), Madrid, p. 113.

- Un décret opportun.

Aéronautique, 3' année, No. 26 Quii. 1921), Paris, p. 292.

—— Entwurf eines Gesetzes über die Beschränkung des Luftfahrzeugbaues. Flugsport, 13. Jahrg., Nr. 13 (22. Juni 1921), Frankfurt, pp. 292-295.

- Entwurf eines Luftverkehrgesetzes.

Flugsport, 13. Jahrg., Nr. 16 (3. Aug. 1921), Frankfurt, pp. 360-365.

- Entwurf eines Luftfahrzeuggesetzes der Stadt Kissimmee (Florida) aus dem

jähre 1908.

Luftweg, Nr. 39-40 (6. Okt. 1921), Berlin, pp. 282-283.

- Erfassung des abzuliefernden Luftfahrtgeräts.

Flugsport, 13. Jahrg., Nr. 17 (17. Aug. 1921), Frankfurt, pp. 388-389.

- Federal air regulations important.

Journ. Soc. Automotive Engineers, Vol. 7, No. 4 (Oct. 1920), New York, p. 330.

- Federal laws must regulate aircraft.

Aircraft Journal, Vol. 6, No. 11 (Mar. 13,1920), New York, p. 27.

- Freedom of the air.

Century, Vol. 99 (Feb. 1920), New York, pp. 515-516.

—■— International Air Convention.

Aeronautics, Vol. 19, No. 350 (July 1, 1920), London, p. 4.

- International air traffic association regulations.

Aerial Age, Vol. 14, No. 11 (Nov. 21,1921), New York, pp. 252-253.

- International law association and air rules.

Flight, Vol. 12, No. 23 (June 3, 1920), London, p. 596.

- International laws of the air.

Flight, No. 663, Vol. 13, No. 30 (Sept. 8, 1921), London, pp. 598, 600.

- Ist der Luftverkehr rentabel?

Flug, Jahrg. 1920, Nr. 5 (Mai), Wien, pp. 41-43, ill.

- Laws regulating aircraft will retard commercial transportation.

The Naviator, Vol. 1, No. 7 (Mar. 27, 1920), Pensacola, Fla., p. 2.

- Legislazione aerea.

Rivista marittima (giugnio 1920), Roma, pp. 16-17.

- La navigation aérienne et le droit international.

Aéronautique, 3= année, No. 24 (mai 1921), Paris, pp. 216-220.

- The need of Federal air regulation.

Aircraft Journal, Vol. 6, No. 16 (Apr. 17, 1920), New York, p. 5.

- New legislation in California.

The Ace, Vol. 1, No. 12 (July 1920), Los Angeles, p. 21.

- Notre enquête sur le statut du personnel navigant.

Aéronautique, 3" année, No. 29 (oct. 1921), Paris, pp. 394-397.

Laws and regulations. Les nouveau code de l'air.

Suisse Aérienne, 2" année, No. 13 (10 jn.il. 1920), Berne, pp. 188.

- On the asininity of the law.

The Aeroplane, Vol. 21, No. 10 (Sept. 7,1921), London, pp. 209-211.

- Ordinance regulating the operation of aircraft in the city of Los Angeles.

The Ace, Vol. 2, No. 5 (Dec. 1920), Los Angeles, p. 22.

-• Plan to stop low flying by planes. Colonel Mapes, chief of New York aerial

police force, to enforce aircraft rules rigidly.

The Naviator, Vol. 1, No. 24 (July 31, 1920), Pensacola, Fia., pp. 1, 8.

—■— Regelung des schweizer Luftverkehrs.

Luftweg, Nr. 8-9 (4. März 1920), Berlin, p. 13.

■-- Réglementation générale actuelle . . .

Aéronautique, 3« année, No. 21 (févr. 1921), Paris, p. 86.

- Regolamento sulla circolazione aerea, sui fuochi e sui segnali.

Rivista marittima (nov.-dic. 1920), Roma, pp. 25-29.

-■ Schweizerische Luftverkehr.

Flugsport, 13. Jahrg., Nr. 11 (25. Mai 1921), Frankfurt, pp. 248-254.

- Sporting instinct vs. air-traffic laws.

Literary Digest, Vol. 67 (Oct. 9,1920), New York, pp. 82-84.

- Standardizing municipal air ordinances.

Aviation, Vol. 10, No. 15 (Apr. 11,1921), New York, pp. 467-468.

•-■ Ein Streifzug durch die amerikanische Luftgesetzgebung.

111. Flug-Woche, 3. Jahrg., 14. Heft (6. Juli 1921), Leipzig, pp. 262-264.

- Trespass by Aircraft.

Aerial Age, Vol. 12, No. 16 (Dec. 27, 1920), New York, p. 418.

- Vögel als Flugzeugersatz.

Flugsport, 13. Jahrg., Nr. 15 (20. Juli 1921), Frankfurt, pp. 334-341.

-• See American Bar Association.

- See Davis, W. Jefferson: Laws of the air.

- See Davis, W. Jefferson: Legal aspect of Federal air legislation.

- See Ebner, A.-: Das englische Luftministerium und die air navigation bill.

- See Ebner, A. : Luftfahrt und Völkerrecht.

-■ See Flandin, Pierre-Étienne: Le statut du personnel navigant.

- See France: French regulations issued.

- See Germany: German frontier aerial navigation rules.

- See Gorrell, Edgar S.: Rules of the air.

•-- See Harris, G. W. : Laws for air travel.

- See India: Prohibited areas in India.

-,- See Insurance: Insurance men demand aerial laws.

- See Malone, William J. : Connecticut's new laws of the air.

- See Mitchell, W. : Law of the air.

- See New York City: Aerial ordinance for New York City.

- See New York: New York regulates flying.

- See Rentschier, F. B.: Federal air regulations important.

Laws and regulations. See Rooker, William Velpeau.

- See Schwarzböck, Erwin: Das österreichische Luftgesetz.

- See Switzerland: Swiss air regulations.

- See Tauber, Ernst: Die neue Entwurf eines deutschen Luftverkehrgesetzes.

- See Wilamowitz-Moellendorff, Hermann v. : Das deutsche Luft Verkehrsgesetz.

- See Williams, W. C. : Law of the air.

- See Woodhouse, Henry: Textbook of aerial laws, and regulations for aerial navigation, international, national, and municipal, civil and military.

Lawson. Le biplan Lawson.

Vie Aérienne, No. 165 (8 janv. 1920), Paris, p. 873.

- The Lawson L-4 transport airplane.

Aviation, Vol. 10, No. 1 (Jan. 3,1921), New York, pp. 17-18, ill.

- The Lawson midnight airliner.

Aerial Age, Vol. 12, No. 16 (Dec. 27, 1920), New York, pp. 415-418, ill., diagr. Flight, No. 646, Vol. 13, No. 19 (May 12, 1921), London, pp. 323-326, ill.

- Der neue Lawson-' ' Nachtluftkreuzer. ' '

111. Flug-woche, 3. Jahrg., 7. Heft (30. März 1921), Leipzig, pp. 124-125, ill.

Lawson, Alfred W. See Faunce, Cy q. : The airliner and its inventor, Alfred W. Lawson, with a summary of the entire aeronautical movement.

Lawson Aircraft Corporation. Airplane wing construction. Photograph showing a wing designed by the engineering force of the Lawson Aircraft Corporation, Green Bay, Wis., for the new MT-2 Lawson machine which is to be used for advanced training and reconnaissance work over the trenches.

Aut. Ind., Vol. 38, No. 10 (Mar. 7, 1918), New York, pp. 509.

Le Brün, Robert. Hannes Kolehmainen et l'athlétisme Finlandais. Vie Aérienne, 5« année, No. 17 (27 nov. 1920), Paris, pp. 267-268, ill.

Le Pere. A modified Le Pere fighter.

Aviation, Vol. 11, No. 8 (Aug. 22, 1921), New York, pp. 221-222, ill.

- Le Pere vacuum fuel feed system for airplanes.

Aut. Ind., Vol. 42 (June 24, 1920), New York, pp. 1450-1451, ill., diagr.

Le Prieur. Le correcteur de route.

Aéronautique, 2e année, No. 18 (nov.-déc. 1920), Paris, pp. 227-232, ill.

Le Prieur, Yves de Vaisseau. Correcteur de route à derivographe pour la navigation aérienne à l'estime.

L'Aérophile, 28. année, Nos. 22-23 (1"-15 nov. 1920), Paris, pp. 326-332, ill.

- Correcteur de route; nouvelle méthode de navigation aérienne à l'estime.

C. R. Acad. Sei., T. 171, No. 16 (18 oct. 1920), Paris, pp. 700-702.

Le Sueur, Maurice. Procédés analytiques pour le calcul des polaires d'avions. L'Aérophile, 28. année, Nos. 15-16 (1«-15 aût 1920), Paris, pp. 226-229, ill.

Le Wald, Leon T., and Guy H. Turrell. The aviator's heart—Roentgen ray studies under conditions simulating high altitudes.

Air Service Information Circular (Heavier-than-air), Vol. 1, No. 3 (Mar. 15,1920), Washington, Government Printing Office, pp. 3-25, ill.

Lea, Clarence F. The aircraft investigation. Speech of Hon, Clarence F. Lea of California in the House of Representatives, March 6, 1920, Washington, Government Printing Office, 1920, pp. 28.

"Leader." "Leader" cables for aircraft.

Nature, Vol. 108, No. 2721 (Dec. 22,1921), London, p. 539.

Leaman, Thomas P. Adjustable camber and variable angle of incidence. Aviation, Vol. 9, No. 2 (Aug. 1920), New York, p. 59, diagr.

Leblanc, Alfred. Le grand espoir de 1921.

Aéronautique, 3« année, Nos. 18-19 (janv. 1921), Paris, pp. 266.

- See Blanchet, Georges: Ceux qui disparaissent Alfred Lablanc.

Lebrassetjr, M. La mesure des débuts de vent.

Chaleur & Industrie, No. 8 (nov.-dée. 1920), pp. 474-477, ill. Measurement by means of Venturi is preferred.

Lecerf, Pierre. Chez Landru en avion.

Vie Aérienne, 5« armée, No. 17 (27 nov. 1920), Paris, pp. 261, ill.

Leclaert, Emile, M. Dupiiy De Lome's aerial ship.

Aircraft Technical Note No. 177, Department of the Navy, Bureau of Construction and Repair, Washington (Apr. 20, 1920), pp. 6.

Lecointe, Sadi. Plus de 302 kilomètres à l'heure . . .

LAérophile, 2S« année, Nos. 19-20 (1«-15 oct. 1920), Paris, p. 311.

- Sadi Lecointe porte le record de vitessi à plus de 313 km. à l'heure.

LAérophile, 28. année, Nos. 23-24 (1«"--15 déc. 1920), Paris, pp. 353-354, ill.

Ledig, P. G. Inflammability of jets of hydrogen and inert gas.

Journal of Industrial and Engineering Chemistry, Vol. 12 (Nov. 1920), Washington, D. C, pp. 1098-1100.

Lee, M. A. Kiln drying of wood in the airplane industry.

Sibley Journal of Engineering, Vol. 33 (June 1919), Ithaca, pp. 66-67.

Lees, E. P. W. International aeronautical maps.

Aeronautics, Vol. 20, n. s., Nos. 379-380 (Jan. 20-27, 1921), London, pp. 45-46, 63.

Lees, T. Orde. Parachutes.

Aviation, Vol. 11, Nos. 16-17 (Oct. 17-24, 1921), New York, pp. 451-453, 485-488, ill.

—— Parachutes—positive and nonpositive.

Flight, Vol. 12, No. 8 (Feb. 19,1920), London, pp. 210-211.

■- Saving life in air wrecks.

Aëron. Journ., Vol. 25, No. 127 (July 1921), London, pp. 317-332.

-- Synopsis for paper on parachutes to be read before the Royal Aeronautical

Society. Title, Reducing loss of life in air-wrecks.

Aëron. Journ., Vol. 25, No. 122 (Feb. 1921), London, pp. 45-46.

Lefranc. See Latham: Le voyage aérien du lieutenant de vaisseau Lefranc.

Lefranc, Jean-Abel. Les avions bolides de la coupe Deutsch de la Meurthe.

La Nature, 49« année, No. 2485 (19 nov. 1921), Paris, pp. 328-332, ill.

--Avions métalliques.

La Nature, 49. année, l«'sem., No. 2452 (2 avril 1921), Paris, pp. 221-224, ill.

- Les avions géants, d'après-guerre.

La Nature, 48. année, 2« sem. No. 2430 (30 oct. 1920), Paris, pp. 276-285, ill.; 49e année, 1» sem., No. 2445-2446 (févr. 5-19, 1921), pp. 100-105,119-124, ill.

- Les hélicoptères moderne.

La Nature, 48. année, 2' sem., No. 2414 (10 juil 1920), Paris, pp. 21-30, ill.

- Le premier Congrès International de la Navigation Aérienne.

LAérophile, 29. année, Nos. 23-24 (l«r-15, déc. 1921), Paris, pp. 372-375.

- Le salon de l'aéronautique. I. Aviation.

La Nature, 48. année Nos. 2393, 2396 (7 févr.-3 avril 1920), Paris, pp. bO-92,133-138, ill.

- Sur la photographie aérienne.

LAérophile, 28. année, Nos. 13-141"-15 Juil. 1920), Paris, pp. 204-208, ill.

Legal action. Legal action started to bring to light pernicious misrepresentation of a vicious clique which has been making trouble in the aeronautic movement. Aerial Age, Vol. 11, No. 15 (June 21, 1920), New York, p. 504.

Legge-Poole, A. The defeat of Germany.

The Aeroplane, Vol. 18, No. 15 (Apr. 14, 1920), London, p. 756.

Legislation. L'aéronautique devant de parlement.

Aéronautique, 3« année, No. 23 (avril 1921), Paris, p. 180.

- See Pittard, Edmond: Législation aérienne.

- See Villareal, Humberto Ramírez: La legislación aérea.

Lehmann, Otto. Berlin-San Franzisko.

Aut. Flugv., Nr. 8 (Aug. 1921), Berlin, pp. 303-305.

- Die Feuersicherheit im Luftverkehr.

111. Flug-Woche, 3. Jahrg., 8. Heft (13. April 1921), Leipzig, pp. 154-155.

- Friedensmotoren.

III. Flug-Woche, 3. Jahrg., 7. Heft. (30. März 1921), Leipzig, pp. 120-121.

- Ein Reichsluftamt.

Flugwelt, 2. Jahrg., 23. Heft (10. Nov. 1920), Leipzig, pp. 557-560, ill.

Leighton, B. G. Nine months' cruise of Atlantic fleet air force without mishap. U. S. Air Service, Vol. 4, No. 2 (Sept. 1920), New York, pp. 8-10, ill.

Leinweber. The Leinweber improved helicopter equipped with two Gnome motors and four special Leinweber airscrews.

Aerial Age, Vol. 12, No. 24 (Feh. 21,1921), New York, p. 604, ill.

Leitner-Watts. The Leitner-Watts all-metal propeller.

Aerial Age, Vol. 12, No. 22 (Feb. 7, 1921), New York, pp. 559-560, ill., diagr.

- Der Metallpropeller von Leitner-Watt.

111. Flug-Woche, 3. Jahrg., 2. Heft (19. Jan. 1921), Leipzig, p. 34, ill.

- See Propellers: All-metal airscrews. The Leitner-Watts solution.

■- See Propellers: The Leitner-Watts metal airscrew.

Lémonon, D. H. European sport planes.

Everyday Engineering Magazine, Vol. 9 No. 6 (Sept. 1920), New York, pp. 528-529, 533, ilL

Lémonon, E. H. L'aile Handley-Page.

L'Aérophile, 28. année, Nos. 22-23 (1«'-15 nov. 1920), Paris, pp. 333-334, ill.

- Les appareils Fokker d'après-guerre.

L'Aérophile, 28. année, Nos. 23-24 (1"-15 déc. 1920), Paris, pp. 354-358, ill.

- L'avion de sport.

L'Aérophile, 28. année, Nos. 3/4 (le'-15 févr. 1920), Paris, pp. 44^47, ill.

- L'avion postal "Henry Potez, type XIV."

L'Aérophile, 29« année, Nos. 17-18 (1»-15 sept. 1921), Paris, pp. 259-260, ill.

- Les avions de la coupe Gordon-Bennett.

Suisse Aérienne, 2« année, No. 21 (21 nov. 1920), Berne, pp. 315-317, ill.

- Les avions nouveaux en France. La Berline Spad-Herbemont S 33. Moteur

Salmson 250 HP., 6 places.

L'Aérophile, 29. année, Nos. 11-12 (I»-15 juin 1921), Paris, pp. 167-169, ill.

- Le Bréguet "Leviathan" type XX.

L'Aérophile, 29. année, Nos. 2-3 (1"-15 févr. 1921), Paris, pp. 34-38, ill. Aviation, Vol. 10, No. 17 (Apr. 25, 1921), New York, pp. 532-534, diagr.

- Le cinquième meeting de Monaco.

Su is£e Aérienne 3e année, 1921, No. 8, Berne, pp. 105-108.

Lemonon, E.H. La coupe internationale Deutsch de la Meurthe. Suisse Aérienne, S'année, 1921, No. 19, Berne, pp. 275-278, ill.

- Deux nouveaux appareils: Le Bréguet "Leviathan" et le Zeppelin-staaken.

Suisse Aérienne, 3e année, 1921, Nos. 4-5, pp. 51-59, ill.

- L'hélicoptère serait-il l'appareil aérien de l'avenir?

Suisse Aérienne, 2« année, No. 11 (10 juin 1920), Berne, pp. 157-164, ill.

- Un hydravion géant le "Oapronissimo." Triple-triplan Caproni.

L'Aérophile, 29. année, Nos. 9-10 (1<"-15 mai 1921), Paris, pp. 136-138, ill.

- The Monaco meeting.

Aeronautics, Vol. 20, n. s., No. 393 (Apr. 28,1921), London, p. 298.

-— Les moteurs d'aviation B. M. W.

Suisse Aérienne, 2« année, No. 14 (25 juil. 1920), Berne, pp. 203-207, ill. t

- La navigation aérienne en Angleterre.

Suisse Aérienne, 2' année, No. 19 (20 oct. 1920), Berne, pp. 283-287, ill.

- Notes sur avions de la coupe.

L'Aérophile, 28. anné, Nos. 19-20 (1«-15 oct. 1920), Paris, pp. 305-310, ill.

- Les nouveaux avions allemands. L'avion commercial Sablatnig.

L'Aérophile, 29. annê, Nos. 1-2 (1°'-15 janv. 1921), Paris, pp. 8-12, ill.

-■ Les nouveaux avions métalliques allemands. Le monoplan "Zeppelin-Staaken."

L'Aérophile, 29. année, Nos. 13-14 (le'-15 juil. 1921), Paris, pp. 203-208, ill.

- Les nouveaux avions métalliques allemands. Les avions Junkers.

L'Aérophile, 29. année, Nos. 5-6 (1«'-15 mars 1921), Paris, pp. 71-78, ill.

- Un nouveau mode de propulsion.

L'Aérophile, 28. année, Nos. 5/6 (1"-15 mars. 1920), Paris, pp. xviii-xix, ill.

- Les nouvelles ailes pour avions.

Suisse Aérienne, 2" année, No. 24 (31 déc. 1920), Borne, pp. 363-367, ill.

- The Pescara helicopter.

Aeronautics, Vol. 20, n. s., No. 384 (Feb. 24, 1921), London, p. 127.

- Les planeurs montés. Le Concours du "Rhön" en Allemagne.

L'Aérophile, 29= année, Nos. 17-18 (1»-15 sept. 1921), Paris, pp. 273-278, ill.

- Le Ier match aérien Oxford-Cambridge: Le 6e derby aérien de Londres.

Suisse Aérienne, 3« année, 1921, No. 12, Berne, pp. 177-179, ill.

- Le record mondial de la hauteur officieusement battu.

Suisse Aérienne, 3« année, 1921, No. 12, Berne, pp. 174-175, ill.

-- La 7e exposition internationale de locomotion aérienne.

Suisse Aérienne, 3e année, 1921, No. 21, Berne, pp. 307-314.

Lent, L. B. The commercial airplane.

Aviation, Vol. 11, No. 7 (Aug. 15, 1921), New York, pp. 188-189.

- Fuel-feed systems for airplanes.

Aviation, Vol. 10, No. 10 (Mar. 7,1921), New York, pp. 294-298, diagr.

Leonhardy. Deutschlands Luftverkehr.

111. Flug-Woche, 3. Jahrg., 13. Helt (22. Juni 1921), Leipzig, pp. 240-241.

--Flugzeug und wirtschaftlicher Grenzschutz.

111. Flug-Woche, 3. Jahrg., 18. Heft (31. Aug. 1921), Leipzig, pp. 302-363.

Leray, Georges. See Fromentin, J. : Les héros disparus: l'enseigne Georges Leray.

Lescarboura, A. C. America's bid for the Görden Bennett cup. Scient. Amer., Vol. 123 (Sept. 11, 1920), New York, p. 253, ill.

Lescarboura, A. C. Shall we fly tomorrow

Review of Reviews, Vol. 62 (July 1920), New York pp. 75-82, ill.

Leseorre. See Gourdou: Les études de MM. Gourdou et Leseurre.

—— See Gourdou, C, and J. Leseurre: Calcul des longerons d'une aile d'avion.

Lesley, Everett Parker. See Durand, "William Frederick, and Everett Parker Lesley: Experimental research on air propellers.

- SwDurand, William Frederick, and Everett Parker Lesley: Tests on air propellers in yaw.

Levasseur. The Levasseur touring machine.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 26 (Dee. 29, 1921), London, pp. 623-624, diagr

—s— See Blanchet, Georges: Un éclatant succès pour la technique française . . .

Levasseur, Pierre. Les avions et les hélices Pierre Levasseur. Aéronautique, 3« année, No. 30 (nov. 1921), Paris, pp. 463, ill.

- L'hélice à pas variables Pierre Levasseur.

L'Aérophile, 29. anné, Nos. 23-24 (1«'-15 dée. 1921), Paris, pp. xvüi-xix,ill.

"Leviathan." "Leviathan "-Brégeuts.

Flugsport, 13. Jahrg., Nr, 6 (16. März 1921), Frankfurt, pp. 141-146, ill

LÉ vine, Joseph. Atlas météorologique de Paris. Paris, Gauthier-Villars et Cie., 1921, ill.

Reviewed in: L'Aérophile, 29. année, Nos. 13-14 (l«r-15 juil. 1921), Paris, p. xviii.

Levy, H. Scale effects in relation to aerodynamics.

Aut. Ind. Vol. 41 (Sept. 25,1919), New York, pp. 629-633, ill., diagr. Scient. Amer.Monthly, Vol. 1 (Jan. 1920), New York, pp. 45-48.

- See Cowley, William Lewis, and H. Levy: Aerofoils for airscrew design.

- See Cowley, William Lewis, and H. Levy: Aeronautics in theory and experiment.

--See Cowley, William Lewis, and H. Levy. Economic flight of an aeroplane in

a wind.

•- See Cowley, William Lewis, and H. Levy: Forces and moments on R. A. F.

14 for negative angles of attack.

- See Cowley, William Lewis, and H. Levy: Tests on a highly cambered aerofoil.

- See Cowley, William Lewis, and H. Levy: Triplane investigation with R. A.

F. 15 section.

- See Jones, R., and H. Levy: A study of the flow of air in the neighborhood of an

airship shed and screens and the forces and moments brought into play.

- See Jones, R.. and H. Levy: Tests on a series of large struts of varying fineness

ratio.

Lewe, Viktor. Bemerkungen zu den Untersuchungen von A. Pröll über Tragflächenbespannung . . .

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 13 (15. Juli 1920), Berlin, pp. 191-192.

- Festigkeitsprüfungen eines Holz und eines Duralschwimmers.

Zeitschr. Flugt. Motorluftsch., 11 Jahrg., Heft 3 (14. Feb. 1920), Berlin, pp. 37-40, 111.

Lewis, C. G., and H. G. Salmond. Experiments in aeroplane photo surveying. Survey of India. Professional Papers No. 19. Dehra Dun, 1920, pp. 53, ill.

Inception and scope of the experiment. Topographical survey. City survey. Experimental air survey near Agra.

Lewis, George M. D. First American piloted airplane to cross the Alps. U. S. Air Service, Vol. 5, No. 2 (Mar. 1921), New York, p. 31.

Lewis, Gwilym Hugh. See Lewis, Hugh, and Gwilym Hugh Lewis: Aviation and insurance.

- See Lewis, Hugh, and G. H. Lewis: Aviation and insurance: Notes for underwriters.

Lewis, Hugh, and Gwilym Hugh Lewis. Aviation and insurance: Notes for underwriters.

London, Stone and Cox, 1920, pp. 60.

Lewitt, E. H. Circumferential wiring of rigids.

Aeronautics, Vol. 20, n. s., No. 395 (May 12,1921), London, pp. 336-338.

- The distribution of bending stresses in a rigid airship.

Aeronautics, Vol. IS, No. 330 (Feb. 12, 1920), London, pp. 140-143, diagr.

--• The effect of distortion on the bending stresses in a rigid airship.

Aeronautics, Vol. 19, No. 360 (Sept. 9, 1920), London, pp. 196-198, diagr.

-• The hull of the rigid airship.

Aeronautics, Vol. 20, n. s., No. 390 (Apr. 7,1921), London, pp. 234-236, diagr.

-■ Temperature stresses in the rigid airship.

Aeronautics, Vol. 21, n. s., No. 405 (July 21,1921), London, pp. 48-49.

- The transverse wiring of the rigid airship.

Aeronautics, Vol. 19, No. 372 (Dec. 2, 1920), London, pp. 397-400.

- Speed and endurance of the rigid airship.

Aeronautics, Vol. 20, n. s., Nos 379 (Jan. 20, 1921), London, pp. 43-44, 62-63, tabl.

Leyat, Marcel. An autocar with an airscrew.

Aeronautics, Vol. 20, n. s., No. 379 (Jan. 20, 1921), London, p. 41, ill.

Leyensetter, Walther. Luftschiffe als Verkehrsmittel. Berlin, R. Oldenbourg, 1920, pp. 31, ill.

Inaugural dissertation of the Technische Hochschule, Berlin.

- Luftschiffe als Verkehrsmittel mit besonderer Berücksichtigung ihrer

Wirtschaftlichkeit.

Zeitschr. Flugt. Motorluftsch., 11. Jahrg., Heft 21 (15. Nov. 1920), Berlin, pp. 309-313.

Liberty. Centrifugal oil cleaner for installation in Liberty-12 engine.

Engineering Division, Air Service, Technical Orders No. 17 (June 1920), Dayton, Ohio, pp. 18-26, ill.

- Einzelversuche am Liberty-Motor.

111. Flug-Woche, 3. Jahrg., 19. Heft (14. Sept. 1921), Leipzig, pp. 386-389, ill.

- Liberty engine.

Aut. Ind. Vol. 38, No. 10 (Mar. 7,1918), New York, p 513.

■-■ Die Leistung des 400 PS Liberty-Motors.

111. Flug-Woche, 3. Jahrg., 18. Heft (31. Aug. 1921), Leipzig, pp. 366-36S, ill.

—— Standard engine report of the Liberty 6-cyl. engine.

Engineering Division Air Service, Technical Orders No. 15 (Apr. 1920), Dayton, Ohio, pp 15-42, ill.

- Standard engine report of 12-cylinder Liberty engine.

Technical Orders No. 9 (Oct. 1919), pp. 13-37, figs.

Liberty. U. S. Liberty 4 engine.

Aerial Age, Vol. 14, No. 10 (Dec. 26, 1921), New York, p. 365.

- «See Archer, R. S.: Some metallurgical features of the Liberty engine.

- See Colvin, F. H.: How Ford built Liberty motors.

- See Couturier, Roger: Le moteur Liberty.

- See Carhart, H. A.: Assembling Liberty motor connecting rods.

- See Carhart, H. A.: Connecting rod forgings for the Liberty motor.

- See Carhart, H. A.: Finishing Liberty motor connecting rods.

- See Carhart, H. A.: Liberty motor connecting rods.

- See Engine equipment: Experimental centrifugal oil cleaner attached to

Liberty engine.

- See Manifolds: Tests on Liberty, Benz, and Mercedes engine manifolds.

- See Sparrow, S. W., and H. S. White: Performance of a Liberty 12 airplane

engine.

Liberty Planes. First Liberty planes shipped.

Aut. Ind., Vol. 38, No. 8 (Feb. 21,1918), New York, p. 422.

"Libra." Running costs of flight. Suggested international formula. Aeronautics, Vol. 18, No. 342 (May 6, 1920), London, p. 359.

License. The licensing of civil aerial navigators.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 16 (Apr. 20, 1921), London, p. 380.

Licensing. National registration and licensing.

Aviation, Vol. 10, No. 7 (Feb. 14,1921), New York, p. 199.

Licenses. See Bauer, L. H.: Why civilian air pilots should be licensed by the Federal Government.

■-• See Great Britain: British pilots required to pass examination in navigation.

- See Pilots: Licenses for air pilots.

- See Pilots: Pilots' licenses.

Liepmann, Robert. Drei Ballonfahrten nach Frankreich.

111. Flug-Woche, 3. Jahrg., 2. Heft (19. Jan. 1921), Leipzig, pp. 30-33; 3. Heft (2. Feb.), pp. 51-53, ill.

Lievre, Joe Ben. Consejos para los aviadores que quieran vivir mucho tiempo. Tohtli, ano 6, Nüms. 1, 2 (onero y feb. de 1921), Mexico, pp. 32-33, ill.

Life buoys. Aerial life buoys.

Aeronautics, Vol. 20, n. s., No. 382 (Feb. 10,1921), London, p. 90.

Life packs. See Parachutes.

Life raft. An aeroplane life raft.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 24 (June 15,1921), London, p. 554, ill.

Life saving. The launch of the first life-saving raft.

The Aeroplane, Vol. 20, No. 23 (June 8,1921), London, p. 522.

- See Austin, W. J.: The Austin "life-float."

Lift. The effect of aspect ratio on lift.

Aerial Age, Vol. 12, No. 19 (Jan. 17,1921), New York, p. 497.

Lifting. New lifting element.

Scient. Amer. Monthly, Vol. 2, No. — (Nov. 1920), New York, p. 285, diagr.

Lifting surfaces. See Prandtl, L.: Theory of lifting surfaces.

Lighthouses. Aerial lighthouses.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 23 (June 9, 1920), London, p. 1136, ill., diagr.

Engineer, Vol. 129 (May 14, 1920), London, pp. 500-501, ill., diagr.

Scient. Amer. Monthly, Vol. 2, No. — (Oct. 1920), New York, pp. 170-171, ill.

Flight, Vol. 12, No. 5 (Jan. 29, 1920), London, pp. 124-125, ill.

- Le balisage lumineux des routes aériennes pour la navigation nocturne.

Génie Civil, T. 79, No. 5 (30, juil. 1921), Paris, pp. 111-112, diagr.

- Lighthouses guide planes shortly.

The Naviator, Vol. 1, No. 10 (Apr. 17, 1920), Pensacola, Fia., pp. 1, 8.

- See Pharos: The aerial lighthouse.

- See Wentworth, B. Preston: The lighthouse for aerial navigation.

Lighting. Lighting installations for night flying.

Aerial Age, Vol. 13, No. 5 (Apr. 11,1921), New York, p. 110.

Lightning. See Duffield, W. C: Meteorology: Lightning.

- See Wilson, C. T. R. : Investigations on lightning discharges and on the electric

field of thunderstorms.

Lilienthal, Gustav. Eine neue Plugtheorie.

Kosmos, Bd. 18, Heft 4,1921, pp. 105-108, ill.

- Der Segelflug der Vögel.

Flug, Sondernummer (Dez. 1920), Wien, pp. 107-111, ill.

- Der Segelflug, eine neue Flugtheorie.

Annalen für Gewerbe und Bauwesen, Bd. 88, No. 8 (Apr. 15,1921), pp. 67-71, ill.

- Zum 25-jährigen Todestage Otto Lilienthals.

III. Flug-Woche, 3. Jahrg., 17. Heft (17. Aug. 1921), Leipzig, p. 345.

Limousines. Air limousines. Luxurious flying machines to be featured at manufacturer's exhibit.

The Naviator, Vol. 1, No. 1 (Feb. 14, 1920), Pensacola, Fla., p. 3.

- Die Rumpler-Luft-Limousine.

Flugwelt, 2. Jahrg.. 12. Heft (9. Juni 1920), Leipzig, pp. 341-342, ill.

Lindau. See Hildesheim, Erik: The Zeppelin-Lindau all-aluminum biplanes.

Lindemann, F. A., H. Glauert, and R. G. Harris. The experimental and mathematical investigation of spinning.

Tech. Rept. Advis. Com. Aeronautics, 1917-18, Vol. 2, London, 1921, pp. 716-729, diagr.

Lindemann, F. A. The northerly turning error of the magnetic compass.

Tech. Rcpt. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 678-699, ill.

--See Searle, G. F. C, and F. A. Lindemann: Preliminary report on measurements of accelerations on aeroplanes in flight.

Lincoln. The Lincoln standard cruiser.

Aerial Age, Vol. 12, No. 12 (Nov. 29, 1920), New York, pp. 319-321, ill., diagr.

- The Lincoln standard speedster.

Aerial Age, Vol. 11, No. 22 (Aug. 9, 1920), New York, pp. 740-741, ill., diagr.

- See Beatty, I. J.: Lincoln motor production plan.

"Lincoln Imp." On aerial map making.

The Aeroplane, Vol. 18, No. 2 (Jan. 14, 1920), London, p. 112.

Lind, Wallace L. Internal-combustion engines—their principles and application to automobile, aircraft, and marine purposes.

Boston and London, Ginn & Co., 1920, pp. v, 225, ill.

Linke. Ueber die Notwendigkeit eines wohlorganisierten Luftfahrer-Wetterdienstes. Flugsport, 13. Jahrg., Nr. 23 (9. Nov. 1921), Frankfurt, pp. 504-506.

Linke, Felix. Peculiar visual phenomena revealed by airmen.

Aerial Age, Vol. 12, No. 17 (Jan. 3,1921), New York, pp. 441, 445.

LiNKE-HoFiiANN. Linke-Hofmann giant airplanes, type R-II.

Engineering Division, Air Service, Technical Orders No. 15 (Apr. 1920), Dayton, Ohio, pp. 85-72, ill.

Aeronautics, Vol. 19, No. 364 (Oct. 7, 1920), London, p. 260.

- The Linke-Hoffmann giant machines.

Aerial Age, Vol. 10, No. 14 (Jan. 19, 1920), New York, pp. 533-535, ill.

Lioré et Olivier. Les avions Lioré et Olivier.

Aéronautique, 3« année, No. 30 (nov. 1921), Paris, pp. 466-467, ill.

- Lioré and Olivier commercial seaplane.

Aerial Age, Vol. 13, No. 3 (Mar. 28, 1921), New York, p. 62.

—— Lioré and Olivier's flying boat.

Aeronautics, Vol. 18, No. 334 (Mar. 11, 1920), London, p. 214, ill.

—■— Das Lioré-Olivier-Kolonialflugzeug.

111. Flug-Woche, 3. Jahrg., 12. Heft (8. Juni 1921), Leipzig, pp. 223-225, ill.

Liptrot, R. N. Radiators and cooling systems for aircraft engines.

Aeronautics, Vol. IS, Nos. 341-342 (Apr. 29-May 6, 1920), London, pp. 315-347, 364-366, diagr.

Little, C. G. Obituary. Lieutenant C. G. Little, U. S. N. R. F.

Aëron. Journ., Vol. 25, No. 129 (Sept. 1921), London, pp. 464-465.

Liurette, Henri. Le vol a voile.

L'Aérophile, 28. année (1«-15 janv. 1920), Paris, pp. 6-16.

L'air, No. 13 (5 août 1920), Paris, pp. 15-17, ill.

La Nature, 48. année, No. 2419 (14 août 1920), Paris, pp. 109-112, ill.

Lloyd, H. A. Classification of the ground from the air.

Flying, Vol. 9, No. 11 (Dec. 1920), New York, pp. 680-682, ill.

Lloyd's. Lloyd's aviation record.

Aeronautics, Vol. 19, No. 359 (Sept. 2, 1920), London, p. 177; Vol. 20, n. s., No. 389 (Mar. 31, 1921), p. 217.

Aviation, Vol. 10, No. 19 (May 9,1921), New York, p. 607. Flight, Vol. 12, No. 36 (Sept. 2, 1920), London, p. 946.

- Lloyd's and aviation risks.

Flight, No. 631, Vol. 13, No. 4 (Jan. 27,1921), London, p. 67.

Lloyds, D. G. Dropping passengers off air liners on the fly.

Illustrated World, Vol. 33 (May 1920), Chicago, pp. 132-435, ill.

Loads. See Case, John: The loads and stresses in aeroplanes. Part II. Tail unit and fuselage.

- See Coffin, J. G.: A study of airplane ranges and useful loads.

- See Stelmachowski, Ing. : Loads and calculations of army aeroplanes.

Load factors. Load factors. Heavier-than-air craft.

Aeronautics, Vol. 20, n. s., No. 391 (Apr. 14,1921), London, pp. 254-255

——- Load factors for aeroplanes and seaplanes.

Engineering, Vol. 109 (Apr. 16, 1920), London, p. 511.

—— Load factors for heavier-than-air craft.

Flight, Vol. 12, No. 10 (Mar. 4, 1920), London, pp. 260-261.

- Schedule of load factors for heavier-than-air craft.

Eng. Indust. Management, Vol. 3, No. 11 (Mar. 11, 1920), pp. 332-333.

BLBLIOGBAPHY OF AERONAUTICS, 1920-1921. 249

Lock, C. N. H. See Fowler, R. H., E. G. Gallop, C. N. H. Lock and H. W. Richmond: The aerodynamics of a spinning shell.

Loeb, L. B., and F. B. Silsbee. Breakdown voltage of a spark gap.

Scient. Amer. Monthly, Vol. 1 (Mar. 1920), New York, pp. 218-220, diagr.

- Effect of temperature and pressure on the sparking voltage.

Fifth annual report of National Advisory Committee for Aeronautics, Washington, 1920, pp. 113-121, ill.

Aerial Age, Vol. 10, No. 19 (Feb. 23, 1920), New York, pp. 691-693, diagr.

Loeb, L. B., L. G. Sawyer, and E. L. Fonseca. Gas leakage in spark plugs.

Fifth annual report of National Advisory Committee for Aeronautics, Washington, 1920, pp. 53-62, ill.

National Advisory Committee for Aeronautics, report, No. 51, Fart 2, Washington, Government Printing Office, 1920, pp. 15-24, diagr.

Loeb, L. B. See Silsbee, F. B., L. B. Loeb, and E. L. Fonseca: Method of measuring heat energy of ignition sparks.

Loening. The Loening model 23 flying yacht reaches 19,500 feet altitude with four on board.

Aviation, Vol. 11, No. 9 (Aug. 29, 1921), New York, pp. 248-250, ill., diagr.

- The Loening monoplane flying boat.

Aerial Age, Vol. 13, No. 26 (Sept. 5,1921), New York, p. 613, ill.

—— The Loening special monoplane.

Aerial Age, Vol. 12, No. 15 (Dec. 20, 1920), New York, pp. 394-395, diagr.

Loening, Albert Palmer. Handling over 3,000 planes at Orly.

U. S. Air Service, Vol. 5, No. 4 (May 1921), New York, pp. 23, 36.

Loening, Grover Cleveland. Commercial aspect of aviation.

Aircraft Journal, Vol. 6, No. 6 (Feb. 7,1920), New York, pp. 3-1, ill.

- The design requirements of commercial aviation.

Aerial Age, Vol. 12, Nos. 20-21 (Jan. 24-31, 1921), New York, pp. 516-517, 542-543. Journ. Soc. Automotive Engineers, Vol. 8,'Nos. 2,5 (Feb.-May, 1921), New York, pp. 135-144, 419-421, ill.

- Engine shape as affecting airplane operation.

Journ. Soc. Automotive Engineers, Vol. 6 (June 1920), New York, pp. 417-421, ill., diagr.

Loening. The Loening Model 23 flying boat.

Flight, No. 670, Vol. 13, No. 43 (Oct. 27, 1921), London, p. 699-701, 111.

- Loening-Renn-Eindecker.

Flugsport, 12. Jahrg., Nr. 2 (19. Jan. 1921), Frankfurt, pp. 36-37.

- The Loening special racing monoplane.

Aer. Eng. Suppl. The Areoplane, Vol. 20, No. 1 (Jan .5,1921), London, p. 12, ill.

Loessel, Eugen v. Vom Segelfliegen.

Flugsport, 12. Jahrg., Nr. 9 (2S. April 1920), Frankfurt a. m., pp. 203-205, ill.

Loessel, Eugen Ritter, and Elder v. Eugen Ritter und Edler von Loessel.

Flugwelt, 2. Jahrg., 18. Heft (1. Sept. 1920), Leipzig, p. 473, port.

Loa. See Klein, E.: Log of a Zeppelin journey. Logan, Patrick H. Patrick H. Logan.

TJ. S. Air Service, Vol. 3, No. 0 (July 1920), New York, p. 31.

Logarithms. See Goldenberg, V.: Lea diagrammes logarithmiques.

Lohmann, Walter. Die "fetten und mageren Fenster" zur harmonischeu Analyse nach dem Hermannschen Verfahren.

Zeitschr. Flugt. Motorluftsch, 12. Jahrg., 21. Heft (15. Nov. 1921), München, pp. 319-230.

44439—25-17

Lotsel. En glanant: Le parachute individuel d'aviation.

La Conq. LALr, 3» année, No. 4 (15 lévr. 1920), Bruxelles, pp. 46-4".

- La sustentatiou pulsatile.

Suisse Aérienno, 2« anuéc, No. 13 (10 juil. 1920), Berne, pp. 192.

London. L' "air conference" de Londres.

Aéronautique, 2» année, No. 17 (oet. 1920), Paris, pp. 208-209.

- L'exposition aéronautique de Londres.

LAir, No. 17 (20 juil. 1920), Paris, pp. 13-20, ill.

- Flying from London to Amsterdam.

The Naviator, Vol. 1, No. 24 (July 31, 1920), Pensacola, Fla., p. 2.

- The London-Continental service.

Flight, Vol. 13, 1921, London, pp. 433, 434, ill.; No. 652, No. 25 (June 23), pp. 5, 29, 38, 72, 427, 405,395, 370, 354, 338, 322, 306, 296, 254,224; No. 654, Vol. 13, No. 27 (July 7), pp. 459,467. 497, 5Ò7, 520, 536, 560, 584,600, 614, 628, 648, 660, 672, 684, 698, 721, 741, 766, 781, 801,817, 826,

- London-Paris air service.

Engineer, Vol. 131, No. 3404 (Mar. 25, 1921), London, p. 317.

- London-Paris as seen through the camera and the plane.

Flight, No. 651, Vol. 13, No. 24 (June 16, 1921), London, pp. 401, 402, ill.

—— London-Paris service.

Aeronautics, Vol. 20, n. s., No. 400 (June 16, 1921), London, pp. 428-131, ill.

- London terminal aerodrome.

Flight, Vol. 13, 1921, pp. 275, 261, 425, 407, 392, 345, 330, 309, 296; No. 653, Vol. 13, No. 26 (June 30), London, pp. 440-441, ill.; No. 654, Vol. 13, No. 27 (July 7, 1921), London, pp. 463, 477, 496, 510, 526, 544, 561, 594, 620, 635, 649, 602, 675, 690, 702, 719, 741, 766, 782, 801, 816, 817, 832, 843, 859.

- The opening of the K. L. M. London-Amsterdam service.

Flight, No. 613, Vol. 13, No. 16 (Apr. 21,1921), London, p. 275, ill.

- Resumption of London-Paris air service.

Flight, No. 639, Vol. 13, No. 12 (Mar. 24, 1921), London, p. 208.

- La VP exposition internationale d'aéronautique de Londres (9-20 juillet 1920).

Genie Civil, T. 77 (14-21 aoùt. 1920), Paris, pp. 125-130, 153-156, ill., diagr.

■-• The Thames as London's air port.

Aerial Age, Vol. 13, No. 1 (Mar. 14,1921), New York, p. 16.

- See Aerial routes: Les transports aériens entre Paris et London.

- See Air routes: London-Cairo-the Cape by airplane.

- See Cogni, E.: Der Jahrestag des Handelsluftverkehres in London.

- See Commercial aeronautics: By air from London to Australia.

- See Commercial aeronautics: London-Paris air express.

- See Commercial aeronautics: London-Paris air service.

- See Commercial aeronautics: London-Paris airplane passenger service.

——- See Commercial aeronautics: Successful year's flying on London-Paris route. —— See Holland-London: The Holland-London air service.

- See Ide, John Jay: The London aero exhibition.

- See Royal Aeronautical Society: Safety and economy on the London-Paris air

service.

- See Smith, Ross: Captain Smith •wins 11,500-mile London-Australia flight.

Long Beach. Long Beach air tournament. Result of first winter meet. The Ace, Vol. 2, No. 6 (Jan. 1921), Los Angeles, pp. 9, 20.

- National winter air tournament. Aeronautical exposition to he held at Long

Beach, December 25, 26, 27, 1920.

The Ace, Vol. 2, No. 5 (Dee. 1920), Los Angeles, p. 7.

Longitudinal airplane. The longitudinal airplane—is it practical? The Naviator, Vol. 1, No. 15 (May 22, 1920), Pensacola, Fia., p. 3. Scient. Amer., Vol. 122 (May 15, 1920), New York, p. 545, ill.

Longitudinal balance. Correcting the longitudinal balance of JN-6H airplanes. Aviation, Vol 8, No. 9 (June 1,1920), New York, pp. 357-358.

Long, Maurice Blaine. See Edwards, Junius David, and Maurice Blaine Long: Solar radiation and balloons.

Long, S. H. In the blue.

London, John Lane, 1920.

Longren. The new Longren airplane.

Aviation, Vol. 11, No. 12 (Sept. 19, 1921), New York, pp. 336-337, ill.

- The new Longren biplane.

Aerial Age, Vol. 14, No. 3 (Sept. 26, 1921), New York, pp. 55-56, ill.

Looping. Le record du "looping" en avion.

L'Aérophile, 28. année, Nos. 11-12 (le'-15 juin 1920), Paris, p. 164.

Lorenz, Tl. Die Wirkungsweise der Tragflächen.

Zeitsehr. Ver. deutseh. Ing., Bd. 65, No. 1 (1. Jan. 1921), Berlin, pp. 8-11, ill.

Lorraine-Dietrich. See Bradley, W. F.: Lorraine-Dietrich production of airplane engines.

Los Angeles. Los Angeles to San Diego service opened.

The Ace, Vol. 2, No. 9 (June 1921), Los Angeles, p. 11.

- See Laws and regulations: Ordinance regulating the operation of aircraft in the

city of Los Angeles.

Loughead. An American single seater with novel features.

Flight, Vol. 12, No. 32 (Aug. 5,1920), London, pp. 864-S65, ill.

- The Loughead sport biplane.

Aerial Age, Vol. 11, No. 13 (June 7, 1920), New Y'ork, pp. 434-435, ill. Aviation, Vol. 8, No. 9 (June 1, 1920), New York, pp. 367-368, ill.

Low, A. R. A fundamental theorem in airscrew theory.

Aeronautics, Vol. 18, No. 348 (June 17, 1920), London, pp. 466-467.

- Helicopters.

Nature, Vol. 107, No. 2698 (July 14,1921), London, pp. 622-623.

- Occasional papers on aeronautics. No. 1. Effect of height on performance.

Aeronautics, Vol. 18, No. 334 (Mar. 11, 1920), Loudon, pp. 223-225.

- Occasional papers on aeronautics. No. 2. A fundamental theorem in airscrew

theory.

Aeronautics, Vol. IS, No. 248 (June 17, 1920), London, pp. 466-467.

- Optical determination of stress in airplane spars.

Jour. Soe. Automotive Engineers, Vol. 7 (Oct. 1920) New York, p. 393, dlagr.

- Screw propellers.

Aeronautics, Vol. 20, n. s., No. 3S3 (Feb. 17, 1921), London, p. 109.

Low, David Allan. Heat engines, embracing the theory, construction, and performance of steam boilers, reciprocating steam engines, steam turbines, and internal-combustion engines. A textbook for engineer students. London, Longman, Green & Co., 1920, pp. 592, ill.

Low-Pressure indicators. See Kemble, E. C: Calculation of low-pressure-indicator diagrams.

Lowe, F. Harold. The H. L. "Marlburian." An interesting amateur-built monoplane.

Flight, No. 046, Vol. 13, No. 19 (May 12,1921), London, pp. 32S-330, ill.

Lubrication. Correct, lubrication.

London, The Vacuum Oil Co., 1919.

- Efficiency in lubrication.

London. C. C. Wakefield & Co. (Ltd.) 1920.

- Lubrication of internal-combustion engines.

Aerial Age, Vol. 12, No. 21 (Jan. 31,1921), New York, p. 544.

- Memorandum on solid lubricants.

London, 1920, Bull. 4, Dept. Sei. and lud. Research.

- Report of the lubricants and lubrication inquiry committee.

Aeron. Journ., Vol. 25, No. 121 (Jan. 1921), London, p. 2.

•- Report of the lubricants and lubrication inquiry committee. Department of ,

scientific and industrial research. Advisory Council. London, H. M. Stationers' Office, 1920, pp. 126, ill., diagrs.

- Testing lubricating oils.

Aviation, Vol. 10, No. 5 (Jan. 31,1921), New York, pp. 147-14S.

- See Parish, W. F.: Proper balancing of fuel, lubricant, and motor.

- See Wells, Henry M., and James E. Southcombe: The theory and practice of

lubrication: The "Germ" process.

Lucanus, Friedrich von. Die Rätsel des Vogelzuges. Ihre Lösung auf experimentellem Wege durch Aeronautik, Aviatik und Vogelberingung. Langensalza, Herman Beyer & Söhne, 1921, pp. 234, ill.

Lucas, Keith. On a new type of magnetic compass for use on aeroplanes.

Tech. Kept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 567-575, ill., diagr.

■-• The oscillations of an aeroplane in flight and their effect on the accuracy of bomb

dropping.

Tech. Kept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 267-277, diagr.

-• Report on the errors of compasses on aeroplanes.

Tech. Rept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 554-567.

Lucifer. See Cosmos: The Cosmos 100-horsepower "Lucifer" engine.

Luckiesh, M. High lights of air travel.

U. S. Air Service, Vol. 3, No. 1 (Feb. 1920), New York, p. 33.

- Visibility of aeroplanes and the appearance of objects viewed from above;

abstract.

Bluminating Engineer, Vol. 13 (Jan. 1920), London, pp. 14-16.

Ludowici, W. Luftbildwesen.

111. Flug-Woche, 3. Jahrg., 1921, pp. 432-433, 474-475, 497-499, ill.

Lugs. See Boulton, B. C: Design of standard lugs.

Luke, Frank. See Aldrich, H. S.: Frank Luke, balloon ace.

BIBLIOGRAPHY OP AERONAUTICS, 1920-1921. 25 3

Lundbero, Ilse. Die Hochzeitsreise im Wandel der Zeiten. Aut. Flugv., Nr. 10 (Okt. 1921), Berlin, pp. ■111-413, ill.

LiOpberger, E. lieber den Einfluss der Flügelabmessungen auf die Fluggeschwindigkeit.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 21. Heft (15. Nov. 1921), München, pp. 316-313,111.

Lüscher, H. Photogrammetrie. Leipzig, B. G. Teubner, 1920, pp. 126, ill. Leipzig, b. G. Teubner, 1920, yp. 126, ill.

Reviewed in: Flug, 8. Jahrg., Nr. 5-6 (1. März 1921), Wien, p. 25.

Lutz, Brenton, R. See Schneider, Edward C, Brenton R. Lutz, and Harold W. Gregg: The changes in the content of hemoglobin and erythrocytese of the blood in man during short exposures to low oxygen.

—— See Schneider, Edward G, and Brenton R. Lutz: Circulatory responses to low-oxygen tensions.

- See Schneider, Edward C, Brenton R. Lutz, and Harold W. Gregg: Compensatory reactions to low oxygen.

- See Schneider, Edward C, and Brenton Pi. Lutz: The reactions of the cardiac

and respiratory centers to changes in oxygen tension.

Mc.

McAdie, Alexander. Attainment of high levels in the atmosphere. Science, Vol. 51 (Mar. 19, 1920), Garrison, N. Y., pp. 2S7-2S9.

—— Gravity and aerostatic pressure on fast ships and airplane*. Science, Vol. 51 (Feb. 6, 1920), Garrison, N. Y., pp. 144-145.

—— The principles of aerography.

London, George G. Harrap & Co., 1920.

McAlmon, Robert M. The Pan-American Congress.

The Ace, Vol. 1, No. 12 (July 1920), Los Angeles, p. 7.

McBride, R. S. New engine-testing plant.

American Machinist, Vol. 52 (May 13, 1920), New York, pp. 1061-1063, ill., plan. Power, Vol. 51 (May 18, 1920), New York, pp. 792-795.

McCabe, I. E. The McCabe sleeve.

Aviation, Vol. 9, No. 2 (Aug. 15, 1920), New York, pp. 60-62, ill.

McOammon, Ormsby. In union there is streugth—and economy. U. S. Air Service, Vol. 5, No. 2 (Mar. 1921), New York, p. 19.

McClean, F. K. Pioneers of British aviation—XXXI.

Aeronautics, Vol. 18, No. 332 (Feb. 26, 1920), London, p 177, ill.

McClure, W. K. Italy's part in the war.

Milan, 1920, TJfiicio Tecnico di Propaganda Nazionale.

McCollough, Max L. How other countries are developing business. U. S. Air Service, Vol. 2, No. 6 (Jan. 1920), New York, pp. 25-20.

McComas, Henry C. Controlling the airplane at twenty thousand feet. The Scientific Monthly, Vol. 12, No. 1 (Jan. 1021), Garrison, pp. 36-10

McCook Field. Description of the McCook Field wind tunnel.

Aerial Age, Vol. 13, No. 14 (June 13, 1921), New York, pp. 319-321, ill.

- McCook Field and the airplane industry.

Aviation, Vol.-7, No. 12 (Jan. 15, 1920), New York, p. 525,

- The McCook Field wind tunnel.

Aeronautics, Vol. 21, n. s., No. 406 (July 28, 1921), London, pp. 70-71,

254

BIBLIOGRAPHY OF AERONAUTICS, 1020-1921.

McCook Field. Resume of McCook Field test reports.

Engineering Division Air Service, Technical Orders No. 7 (Apr. 1919), Dayton, Ohio, pp. S2-91.

- Two years' work at McCook Field.

Aviation, Vol. 10, No. 9 (Feb. 28,1921), New York, pp. 263-265.

-■ Velocity determination in McCook Field wind tunnel.

Aerial Age, Vol. 13, No. 23 (Aug. 15, 1921), New York, p. 542.

•-■ See Bane, T. H.: Illustrations of McCook Field.

- See Caldwell, F. W.: Propeller-testing laboratory at McCook Field.

- See Cammen, L.: McCook Field and American aeronautics.

- See Engines: Increase of power output with higher compression ratios; another

of the McCook Field engine tests.

MacCoull, Neil. The Fiat 600-horsepower aircraft engine.

Aviation, Vol. 7, No. 11 (Jan. 1,1920), New York, pp. 481-486, ill.

McCready, John A. Lieutenant McCready establishes new altitude record. Aerial Age, Vol. 14, No. 5 (Oct. 10,1921), New York, p. 100.

McCudden. Five year's in the Royal Flying Corps.

Reviewed in: Flugwelt, 2. Jahrg., 13. Heft (23. Juni 1920), Leizig, p. 362.

McCurdy, Edward. Leonardo da Vinci.

Royal Institution of Great Britain, weekly evening meetings, Friday, March 19,1920, pp. 1.

McTlhiney, Donald W. Applying the figure of merit.

Aviation, Vol. 11, No. 19 (Nov. 7, 1921), New York, pp. 514-545.

- A figure of merit for airplanes.

Aviation, Vol. 9, No. 8 (Nov. 8, 1920), New York, pp. 254-257, ill.

■- Multiengined commercial airplanes.

Aviation, Vol. 11, No. 18 (Oct. 31,1921), New York, pp. 506-507.

- Single-engined cabin airplanes.

Aviation, Vol. 11, No. 13 (Sept. 26, 1921), New Y'ork, pp. 364-365, ill.

McIntosh, J. The death of Lieutenant Mcintosh.

The Aeroplane, Vol. 20, No. 13 (Mar. 30, 1921), London, p. 298.

- Fatal accident to Lieut. J. Mcintosh.

Flight, No. 640, Vol. 13, No. 13 (Mar. 31, 1921), London, p. 234.

McIntosh, K. C. "The same door wherein I went-."

U. S. Air Service, Vol. 5, No. 5 (Juno 1921), New York, pp. 13-15.

McKay, Hugh D. Training the commercial airplane mechanic.

U. S. Air Service, Vol. 6, No. 5 (Dec. 1921), New York, pp. 22-24.

Mackenthun, Walter. Männer der Luftfahrt—VIII.

Flugwelt, 2. Jahrg., 15. Heft (21. Juli 1920), Leipzig, pp. 398-399, port.

McLachlan, N. W. Approximate method of testing aeroplane wing ribs. Aviation, Vol. 8, No. 2 (Feb. 15, 1920), New York, pp. 59-63. Engineering, Vol. 109 (Jan. 2,1920), London, pp. 1-4, diagr.

MacLake, William. Recent work in personality study.

Air Service Informalion Circular (Ileavier-than-air), Vol. 1, No. 3 (Mar. 15,1920), Washing! on Government Printing Office, pp. 26-30.

McLennan, J. C. Helium, its production aud uses.

Engineering, Vol. 110 f July 30, 1920), London, pp. 154-156, diagr.

McLennan, J. C, and others. The helium sources of the British Empire, Ottawa, Canada, 1920, Department of Mines,

McLennan, John Cunningham. Report on some sources of helium in the British Empire.

Canada, Dept. ot Mines. Mines Branch, Bulletin No. 31, Ottawa, 1920, pp. 72, diagrs.

■- Uses of helium.

Scient. Amer., Vol. 123 (Nov. 13, 1920), New York, p. 493.

MacReady, John A. Airplane reaches altitude of 7.75 miles. Using machine in which Major Schroeder made world record, Army flyer ascends to unprecedented height above the earth.

ü. S. Air Service, Vol. 6, No. 2 (Sept. 1921), New York, pp. 10-12.

- MacReady's altitude flight.

Aerial Age, Vol. 14, No. 6 (Oct. 17,1921), New York, pp. 127-128, ill.

- MacReady's altitude record.

Flight, No. 672, Vol. 13, No. 45 (Nov. 10, 1921), London, p. 743.

- New altitude record: 40,800 feet.

Aviation, Vol. 11, No. 15 (Oct.10,1921), New York, pp. 423-425, ill.

- To 40,800 feet.

Flight, No. 667, Vol. 13, No. 10 (Oct. 6,1921), London, p. 663.

McMahon, John F. Elementary aeronautics and model notes.

Aerial Age, Vol. 10, Nos. 12-21; Vol. 11, Nos. 1-26 (Jan. 5-Sept. 6, 1920), New York, pp. 465, 507, 541, 575, 637, 669, 701, 731, 787, 25, 61, 93, 127, 161, 195 229, 263, 297, 335, 375, 409, 443, 4SI, 517, 553, 587, 621, 653, 685, 717, 749, 781, 813, 815, 877, ill., diagr; Vol. 12, Nos. 1-3 (Sept. 13-27, pp. 23, 55, 87, ill., diagr.

- Model aeroplanes.

Aerial Age, Vol. 12, Nos. 4-16 (Oct. 4-Dec. 27, 1920), New York, pp. 117, 151, 1S3, 209, 231, 257, 2S1, 305, 329, 351, 377, 401, 425, diagr.

McNeal, Don. Some observations on a free-balloon flight made from Aberdeen Proving Ground, Md., June 3, 1920.

Monthly Weather Review, Vol. 48, No. 6 (June 1920), Washington, pp. 334-335.

M.

M., A. Uu nouveau vice-president de l'Ae.: C. F. Paul Tissandier.

L'Acrophilc, 29. annce, Nos. 9-10 (1"-15 mai 1921), Taris, p. 135, port.

M., E. Reutabilitätsmöglickeiteu beim Schiff, Ivuftschiff, Landfahrzeug und Flugzeug.

Technik lür Alle, Bd. 12, Jahrg. 8, Helt 8, 1921-22, pp. 172-175, ill.

iL, K. L. European air lines.

Aeronautics, Vol. 20, n. s., No. 395 (May 12,1921), London, pp. 332-334, ill.

MB-3. Bids for MB-3 pursuit airplanes and spares.

Aviation, Vol. 10, No. 11 (Mar. 14, 1921), New York, pp. 334-335.

Mache, H. Einführung in die Theorie der Wärme.

Vienna, Berlin and Leipzig, 1921, Walter De Oruyter & Co., pp. 319, ill. Reviewed in: Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 23. Heft (15. Dez. 1921), München, pp. 311-312.

Macchi. New Macchi flying boats.

Aeronautics, Vol. 19, No. 368 (Nov. 4, 1920), London, p. 322, ill.

Machine guns. See Gorton, Walter T.: Aircraft machine guns.

Macdonald, C. S. Instruments and commercial aviation.

Aviation, Vol. 11, No. 16 (Oct. 17,1921), New York, p. 456.

Macedonia. See Shaw, Napier: Notes on the winds of Macedonia.

Machinery. The Ahcol baud-polishing machine.

Flight, Vol. 12, No. 23 (June 3, 1920), London, p. 604, ill.

Machines. Modern cabin machines.

Flight, Vol. 12, No. 44 (Oct. 23, 1920), London, p. 1122.

Macmillan, Norman. The present and future civilian pilot. Flight, Vol. 12, No. 4s (Nov. 25, 1920), London, p. 121s.

Maffert, J. Pierre. Navigation aérienne.

Suisse Aérienne, 3« année, 1921, Nos. 22-23, Berne, p. 333.

Magaldi, G. Note sul calcolo delle strutture dei velivoli.

L'Aéronautica, anno 3, Num. 5-6 (luglio-agosto 1920), Roma, pp. 216-222.

Maggs Bros., London. . . . A descriptive catalogue of books and engravings illustrating the evolution of the airship and the aeroplane. Selected from the stock of Maggs Bros. . . . London . . .

[London] The Courier Press [1920], pp. 170, ill.

Magnetic waves. See Taylor, A. Holt: Variation in direction of propagation of long electromagnetic waves.

Magneto. British magnetos.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 3 (Jan. 19,1921), London, p. 63.

- See Silsbee, Francis Briggs: Simplified theory of the magneto.

Mahstjds. See R., F. A. de V.: Bombing the Mahsuds.

Mail. The aerial mail.

Aerial Age, Vol. 13, No. 2 (Mar. 21,1921), New York, p. 27. Flying, Vol. 10, No. 3 (Apr. 1921), New York, p. 105.

- The aerial mail achievement.

Aerial Age, Vol. 12, No. 26 (Mar. 7,1921), New York, p. 6.51.

- Aerial mail and aviation.

Scient. Amer., Vol. 122 (Apr. 24,1920), New York, p. 448.

- Aerial mail recommendation indorsed by President Wilson.

Aerial Age, Vol. 12, No. 22 (Feb. 7,1921), New York, pp. 555-556.

- Aerial-mail stamps.

Aerial Age, Vol. 12, No. 18 (Jan. 10,1921), New York, p. 460-461.

-— Aerial mail to Holland.

Flight, Vol. 12 No. 17 (Apr. 22, 1920), London, p. 444.

- Air mail.

Flight, No. 644, Vol. 13, No. 17 (Apr. 23, 1921), Loudon, p. 292.

—•— The air mail and American aeronautics.

Aviation, Vol. 10, No. 3 (Jan. 17,1921), New Y'ork, p. 68.

- The air mail—an economic revolution.

Aviation, Vol. 9, No. 7 (Nov. 1, 1920), New York, p. 232.

- Air-mail changes.

Aviation, Vol. 10, No. 25 (June 20, 1921), New York, p. 784.

- The air mail endangered.

Aerial Age, Vol. 12, No. 21 (Jan. 31,1921), New York, p. 531.

- Air-mail mileage.

Aerial Age, Vol. 12, No. 28 (Mar. 7,1921), New York, p. 661.

- Air-mail operation and maintenance.

Joum. Soc. Automotive Engineers, Vol. 6, No. 5 (May 1920), New York, p. 298

Mail. Air-mail operation costs for April.

Journ. Soc. Automotive Engineers, Vol. 7, No. 3 (Sept. 1920), New York, p. 301.

- Air-mail performance for May, 1920.

Aircraft Journal, Vol. 7, No. 1 (July 5, 1920), New York, p. 7. Aviation, Vol. 8, No. 11 (July 1, 1920), New York, p. 434.

- Air-mail plane saves life.

Aviation, Vol. 11, No. 3 (July IS, 1921), New York, p. 79.

- Air-mail policy, inland and foreign.

Aeronautics, Vol. 19, No. 3.54 (July 29, 1920), London, pp. 93-94.

-■ Air-mail reorganization.

Aviation, Vol. 11, No. 1 (July 4,1921), New York, p. 23.

- Air-mail routes include the South; 815-mile trip from New York to Atlanta via

Capital.

The Naviator, Vol. 1, No. 22 (July 17, 1920), Pensacola, Fla., p. 3.

—— Air-mail service.

Annual report of the Postmaster General for the fiscal year ended June 30, 1920, Washington, Government Printing Office, 1920, pp. 57-65, 172. Journ. Soc. Automotive Engineers, Vol. 8, No. 3 (Mar. 1921), New York, p. 291.

- Air-mail service. Report of operation and maintenance.

Aerial Age, Vol. 10, Nos. 14,1S-19; Vol. 11, Nos. 2,6, 7, 8, 10, 11, 16,22, 24, 25 (Jan. 19, Feb. 16, 23, Mar. 22, Apr. 19, 26; May 3, 17, 24, 31, June 28, Aug. 9, 23, 30 (1920), New York, pp. 532, 060, 690; 52, 1S5, 21S, 252, 322, 361, 380, 400, 544, 729, 803, 835.

—— The air-mail service. Report of United States Air Service. Aeronautics, Vol. 18, No. 326 (Jan. 15, 1920), London, p. 69.

—— Air-mail service big saving to Unitea States.

The Naviator, Vol. 1, No. 6 (Mar. 20, 1920), Pensacola, Fla., pp. 1, S.

--Air-mail service is two years old.

The Naviator, Vol. 1, No. 16 (May 29, 1920), Pensacola, Fla., pp. 1, 8.

- Air-mail services.

Flight, Vol. 12, No. 29 (July 15, 1920), London, p. 783; Vol. 12, No. 30 (July 22), p. 806.

- Air-mail services from London.

Flight, Vol. 12, No. 31 (Aug. 19, 1920), London, p. 909.

- Air-mail services. Routes and frequency of sendee.

Aeronautics, Vol. 20, n. s., No. 393 (Apr. 2S, 1921), London, p. 306.

- Air mail starts to the Pacific coast.

The Naviator, Vol. 1, No. 25 (Aug. 7,1920), Pensacola, Fla., pp. 1, S.

- Air mails.

Aeronautics, Vol. 19, No. 365 (Aug. 12,1920), London, p. 126. Vol. 20, n. s., No. 393 (Apr. 2S, 1921), London, pp. 2S9-290.

- Air mails and airships.

Aeronautics, Vol. 19, No. 372 (Dec. 2, 1920), London, pp. 389-390.

—— Air mails in Britain.

Aeronautics, Vol. 18, No. 315 (May 27,1920), London, p. 413.

- Air mails in the House.

Flight, Vol. 13, No. 26, No. 653 (June 30, 1921), London, p. 434.

—— Airships and empire air mails.

Flight, No. 051, Vol. 13, No. 24 (June 16,1921), London, pp. 399-400.

- American press commends air mail.

Aviation, Vol. 10, No. 8 (Feb. 2!, 1921), New York, pp. 241-242.

Mail. Annual report on the aerial-mail service.

Aorial Age, Vol. 12, No. 16 (Dec. 27,1920), New York, pp. 411-412. Aircraft Journal, Vol. 6, No. 6 (Feb. 7, 1920), New York, p. 5.

Are you bidding for aerial mail contracts?

Flying, Vol. 9, No. 7 (Aug. 1920), Now York, pp. 440-443.

--Are you pushing the extension of the aerial-mail service?

Flying, Vol. 9, No. 9 (Oct. 1920), New York, pp. 593-595.

Can we fireproof aerial mail?

Sclent. Amer., Vol. 123 (Sept. IS, 1920), New York, p. 279, ill.

Celerity shown by aerial mail.

The Naviator, Vol. 1, No. 7 (Mar. 27, 1920), Pensacola, Fla., p. 1.

Consolidated statement of operations of air-mail service, July 1, 1918, to July I, 1919.

Aerial Age, Vol. 10, Nos. 12-13 (Jan. 5-12, 1920), New York, pp. 441, 494.

- Continue the air-mail service.

American Machinist, Vol. 52, No. 8 (Feb. 19,1920), New York, p. 412.

---- Conversion of the "daily mail."

Aeronautics, Vol. 19, No. 352 (July 15, 1920), London, pp. 45-46.

---Cost of operation of air mail.

Aircraft Journal, Vol. 6, No. 13 (Mar. 27, 1920), New York, pp. 8-9.

- Die deutsche Flugpost.

111. Flug-Woche, 3. Jahrg., 7. Heft (30. März 1921), Leipzig, pp. 119.

- Effect of weather on the aerial-mail service.

Monthly Weather Review, Vol. 48, No. 6 (June 1920), Washington, pp. 335-336.

--The engineering section of the air mail.

Aviation, Vol. 9, No. 10 (Nov. 22, 1920), New York, p. 319, ill.

--England-Holland air mail.

Flight, Vol. 12, No. 28 (July 8, 1920), London, p. 711.

England recognizes America's great lead in aerial mail. The Naviator, Vol. l,No. 1 (Feb. 14, 1920), Pensacola, Fla., p. 7.

England recognizes America's lead in aerial mail. Literary Digest, Vol. 64 (Feb. 7, 1920), New York, p. 122.

Flugpost.

Luftweg, Nr. 3-4 (27. Jan. 1921), Berlin, pp. 22-23, ill.

- Die Flugpost zur Leipziger Messe.

Flugwelt, 2. Jahrg., 18. Heft (1. Sept. 1920), Leipzig, p. 472, ill.

Four air-mail routes will link New York with network over nation. The Naviator, Vol. 1, No. 22 (July 17, 1920), Pensacola, Fla., p. 1.

- How to use the air mail.

Aeronautics, Vol. 19, No. 362 (Sept. 23. 1920), London, p. 224.

- In defense of the air-mail service.

U. S. Air Service, Vol. 3, No. 5 (June 1920), New Y'ork, p. 21.

Inland air mails. Mr. Holt Thomas shows the way. Aeronautics, Vol. IS, No. 325 (Jan. S, 1920), London, p. 36.

Inland air mails. Remarkable figures of time saving. Aeronautics, Vol. IS, No. 327 (Jan. 22,1920), London, p. 77.

- Jersey asks for air mail.

Flight, No. 651, Vol. 13, No. 24 (June 16,1921), London, p. 405.

BIBLIOGRAPHY OF AERONAUTICS, 1920-1921.

Mail. Lignes aériennes postales en Syrie.

Aéronautique, 3« année, No. 23 (avril 1921), Paris, p. 174.

- Lineas postales aéreas.

Aire, Mar y Tierra, aûo 2. Niim. 15 (junio 1920), Madrid, pp. 342-343.

- Die Luftpost in Spanien.

Flugwelt, 2. Jahrg., 26. Heft (22. Dez. 1920), Leipzig, pp. 642-643.

---Mail delivery to ships at sea.

Scient. Amer., Vol. 122 (Mar. 27, 1920), New York, p. 327, ill.

- Mail planes to land on post-office roof.

Aviation, Vol. 10, No. 23 (June 6,1921), New York, p. 713.

--Mails and aerial defence.

Aeronautics, Vol. 19, No. 352 (July 15, 1920), London, pp. 45-46.

- The Model J-2 mail plane.

Aviation, Vol. 8, No. 3 (Mar. 1, 1920), New York, pp. 105-106, ill.

- Monthly report of air-mail service.

Aviation, Vol. 10, No. 2 (Jan. 10, 1921), New York, p. 51.

- Monthly report of air-mail service. December, 1920.

Aviation, Vol. 10, No. 10 (Mar. 7, 1921), New York, p. 306.

- Monthly reports on air-mail service. August, September, 1920.

■ Aviation, Vol. 9, No. 12 (Dec. 6, 1920), New York, pp. 390-391.

- N. A. C. A. praises air mail.

Aviation, Vol. 10, No. 6 (Feb. 7, 1921), New York, pp. 178.

---- Needs of the air-mail service.

Flying, Vol. 10, No. 5 (June 1921), New York, p. 179.

---New air-mail services and rates.

Aeronautics, Vol. 20, n. s., No. 392 (Apr. 21, 1921), London, p. 271.

---New York-San Francisco air-mail route will soon be a reality.

The Naviator, Vol. 1, No. 13 (May 8, 1920), Pensacola, Fia., p. 3.

- New United States airplane, type DH-M2.

Aviation, Vol. 11, No. 17 (Oct. 24, 1921), New York, p. 476, ill.

- Official report on air-mail service. Third year of operation, May 15, 1920, to

May 15, 192].

Aviation, Vol. 10, No. 22 (May 30, ‘921), New York, p. 6S2.

---- Only American airplanes on new mail routes!

Aut. Ind., Vol. 43 (July 15,1920), Now York, p. 106.

--Peking-Shanghai air mail.

Flight, No. 644, Vol. 13, No. 17 (Apr. 28, 1921), London, p. 295.

- Plane replaces pony riders. Sixty years after first transcontinental mail service

comes transportation by air.

The Naviator, Vol. 1, No. 1 (Feb. 14, 1920), Pensacola, Fia., p. 3.

- Plea for continuance of air-mail service.

U. S. Air Service, Vol. 5, No. 1 (Feb. 1921), New York, p. 26.

- The post office and the air mails to Ireland.

The Aeroplane, Vol. 19, No. 22 (Dec. 1,1920), Loudon, pp. 840-841.

■- Post Office Department issues call for proposals for operation of aerial mail

routes.

Aerial Age, Vol. 11, No. 19 (July 19, 1920), New York, pp. 644, 64s. Flying, Vol. 9, No. 7 (Aug. 1920), New York, pp. 437-439.

260

BIBLIOGRAPHY OF AERONAUTICS, 1920-1021.

Mail. Posta aerea.

Bivista marittiina (nov.-die. 1920), ltoma4 pp. 31-3.).

--Proposals for air-mail transportation.

Aircraft Journal, Vol. 7, No. 3 (July 19, 1920), Now York, pp. S-9.

- The reliability of the aerial mail-

Aerial Age, Vol. 11, No. 4 (Apr. S, 1920), New Y'ork, p. 116.

- Reliability of air-mail service.

Aircraft Journal, Vol. 6, No. 14 (Apr. 10,1920), Now York, p. 9.

- Roster of the air-mail service.

Aircraft Journal, Vol. 7, No. 13 (Sept. 27, 1920), New York, pp. 5-0, ill.

--Second anniversary of the air-mail service.

Aircraft Journal, Vol. 6, No. 22 (Hay 31, 1920), New York, pp. 3-5, ill.

- Le sendee Paris-Genève.

Suisse Aérienne, 1' année, No. 14 (25 juil. 1920), Berne, pp. 209-210.

- Ship drops eggs, parcel post, by parachute in first post office test.

TJ. S. Air Service. Vol. 2, No. 6 (Jan. 1920), New York, p. 12.

—■— Spirit of the old pony express now carries the air mail.

Literary Digest, Vol. 67 (Oct. 9, 1920), New Y'ork, pp. 76-82.

- State air mails.

Aeronautics, Vol. 18, No. 3! I (May 20, 1920), London, p. 391.

- Striking facts about air mails. A business proposal for the post office.

Aeronautics, Vol. 19 No. 351 (July S, 1920), London, pp. 17-18.

--Der subventionerte Luftverkehr im Dienste der Post.

Flugsport, 13. Jahrg., Nr. 12 (8. Juni 1921), Frankfurt, pp. 268-272,111.

- Summary of results of R. A. F. mail services.

Flight, Vol. 12, No. 2 (Jan. 8, 1920), London, p. 49.

- Three years of air-mail service.

Aviation, Vol. 10, No. 18 (May 2,1921), New York, pp. 559-561, 564,ill.

- Three years of the aerial mail.

Aerial Age, Vol. 13, No. 11 (May 23, 1921), New Y'ork, pp. 249, 262.

- The transcontinental aerial mail.

Aerial Age, Vol. 12, No. 1 (Sept. 13, 1920), Now York, p. 5.

- Transcontinental air mail starts.

Aircraft Journal, Vol. 7, No. 12 (Sept. 20,1920), New Y'ork, pp. 3-4.

- Two months air mail United States Post Office Department.

Aeronautics, Vol. 19, No. 361 (Sept. 16, 1920), London, p. 214. Monthly reports of operation and maintenance April and May, 1920.

- Two years of the air mail.

Literary Digest, Vol. 65 (June 19,1920), New Y'ork, pp. 30-31, ill.

- United States air mails. Progress in 1920.

Aeronautics, Vol. 20, n. s., No. 378 (Jan. 13, 1921), London, pp. 25-26.

- United States air-mail contracts.

Aeronautics, Vol. 19, No. 355 (Aug. 5, 1920), London, p. 115.

- United States air-mail prize awards.

Aerial Age, Vol. 13, No. 12 (May 30, 1921), New York, p. 276, 111.

- United States air-mail survey flight.

Journ. Soc. Automotive Engineers, Vol. 8, No. 2 (Feb. 1921), New York, p. 134.

Mail. United States Post Office Department air-mail service consolidated report of operation—fiscal year 1921.

Aerial Age, Vol. 14, No. 3 (Sept. 26, 1921), New York, p. 62.

- United States Post Office Department air mail service consolidated statement

of performance of the air-mail service fiscal year 1921 (July 1, 1920, to June 30, 1921).

Aerial Age, Vol. 14, No. 3 (Sept. 26, 1921), New York, p. 62.

- United States Post Office Department air-mail service monthly report of operation and maintenance, August, 1920.

Aerial Age, Vol. 12, No. 11 (Nov. 22, 1920), New York, p. 293.

- United States Post Office Department air-mail service monthly report of

operation and maintenance, October, 1920.

Aerial Age, Vol. 12, No. 15 (Deo. 20, 1920), New York, p. 390.

- United States Post Office Department air-mail service monthly report of operation and maintenance, September, 1920.

Aerial Age, Vol. 12, No. 12 (Nov. 29, 1920), New York, p. 317.

——- United States Post Office Department air mail service monthly report of operation and maintenance, November-December, 1920.

Aerial Age, Vol. 12, Nos. 21, 24 (Jan. 31-Feb. 21,1921), New York, pp. 533, 605.

- United States Post Office Department air-mail service monthly report of

operation and maintenance, January-October, 1921.

Aerial Age, Vol. 13, Nos. 2-24, 1-15 (Jan. 10-Dec. 19, 1921), New York, pp. 53, 149, 221 341, 389, 562, 5, 125, 197, 342.

- United States Post Office Department Cleveland-Omaha Division air-mail

service monthly report of operations and maintenance, June, 1920.

Aerial Age, Vol. 12, No. 1 (Sept. 13, 1920), New York, p. 10.

- United States Post Office Department Chicago-Omaha route air-mail service

monthly report of operation and maintenance, May, 1920.

Aerial Age, Vol. 12, No. 3 (Sept. 27, 1920), New York, p. 74.

- United States Post Office Department New York-Washington Division airmail service monthly report of operations and maintenance, June, 1920.

Aerial Age, Vol. 12, No. 2 (Sept. 20, 1920), New York, p. 42.

- La voie postale aérienne.

L'Aérophile, 28» année, Nos. 15-16 (1"'-15 août 1920), Paris, pp. 240-245, ill.

—— Warsaw-Paris air service.

Engineer, Vol. 131, No. 3407 (Apr. 15,1921), London, p. 401.

- See Air-mail service: United States air-mail service.

- See Armstrong, Douglas B.: Postage stamps of the air.

- See Beggs, A. H. : Thomas-Morse mail plane.

- See Burleson, A. S.: Mr. Burleson on the air mail.

- See Burleson, A. S.: Story of our air mail.

- See China: Air mail in China.

- See Commercial aeronautics: Aerial mail as a promoter of commercial aeronautics.

- See Congo: Aerial mails in the Congo.

- See Edgerton, James C. : ltadio as applied to air navigation in the air-mail service.

- See Foster, A. B.: My flight with the aerial mail.

Mail. See Gaulois, G. : Air bags for the airplane that lands on water.

- See Germany: German air mails.

- See Great Britain: Airplane has been put to work in Great Britain.

- See Great Britain: The Dominions and aircaft.

- See Hansen, N.: Englische Luftpostperspektiven.

- See Holmes, P. L.: Mail transport. The cooperation of aircraft and surface

craft.

-- See Holt, H. S.: An air-mail suggestion.

——■ See Holt, H. S.: The air postman.

- See Lémonon, E. H.: La navigation aérienne en Angleterre.

- See Martin: Glenn L.: Scandalizing the air mail.

--See Mexico: Air-mail service for Mexico.

- See Mitchell, W.: Air-mail service.

--See Paganini, Robert: Perspektiven der Luftpost.

- See Praeger, Otto: Air-mail service saves public $100,000 a year. Performance

better than 90 per cent.

- See Praeger, O.: Air mail shows commercial possibilities of planes.

- See Praeger, Otto: Cost of air-mail route from New York to San Francisco.

- See R., F. A. de V.: The Indian air mail.

- See Subsidies: Subsidies, air mails, and a territorial air force.

- See Turner, C. C: Air-mail extension.

- See United States Post Office Department: United States air-mail service.

- See Vincent, J. G.: Aerial-mail service.

- See Wireless: Radio warns mail plane.

Maitland, E. M. The commercial future of airships.

Flight, Vol. 12, No. 17 (Apr. 22, 1920), London, pp. 455-457; Vol. 12, No. 18. (Apr. 29), pp. 474-476.

Journal of the Roj'al Society of Arts, Vol. 68, No. 3521 (June 4, 1920), London, pp. 461-475. Includes discussion.

C'nited States Air Service, Vol. 4, No. 6 (Jan. 1921), New York, pp. 22-26, ill.

- "The log of H. M. A. :R. 34:' Journey to America and back."

London, Hodder & Stoughton (Ltd.), 1921, pp. 180, ill.

Reviewed in: Flight, No. 631, Vol. 13, No. 4 (Jan. 27, 1921), London, p. 60.

—— Log of H, M. A, R-34; journey to America and back; with a letter from Rudyard Kipling,

New York, George II. Doran Co., 1921, pp. xii, 168, ill.

- Obituary. Air Commodore E. M. Maitland, C. M. G., D. S. O., A. F. C,

A. F. R. Aë. S.

Aero. Journ., Vol. 25, No. 129 (Sept. 1921), London, pp. 460-461.

- Pioneers of British aviation—XXVII: Air Commodore E. M. Maitland, C. M. G.,

A. F. C, B. A.

Aeronautics, Vol. IS, No. 328 (Jan. 29, 1920), London, pp. 98-99, ill.

- See Commercial aeronautics: Airship ton-miles. Air Commodore Maitland's

estimate criticised.

BIBLIOGRAPHY OP AERONAUTICS, 1920-1021. 263

Malaya. Pioneering in Malaya.

Aer. Eng. Supp. The Aeroplane, Vol. 19, No. 25 (Dee. 22, 1920), London, pp. 934, 936, ill.

Malgorn, G. Les navires anglais et américains porteavions.

Aéronautique, 2" année, No. 14 (juil. 1920), Paris, pp. 66-70, ill.

Mallock, A. Behaviour of levels when subject to vibration.

Tech. Kept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 671-672, diagr.

- Best altitude for aerial scouting at sea.

Tech. Bept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 752-754.

—— Deviation of the compass due to vibration and friction between the cup and the pivot.

Tech. Kept. Advis. Com. Aeronautics, 1915-16, London, 1920, pp. 536-539.

- Drifting smoke.

Tech. Bept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 755-756, diagr.

——■ Eddies and the diffusion of momentum.

Tech. Bept. Advis. Com. Aeronautics, 1916-17, Vol. 1, London, 1920, pp. 13-15.

- Flight by flapping wings.

Tech. Bept. Advis. Com. Aeronautics, 1917-18, Vol. 3, London, 1921, pp. 1185-1189, diagrs.

Malone, William J. Connecticut's new laws of the air.

TJ. S. Air Service, Vol. 5, No. 5 (June 1921), New York, pp. 25-26.

Malterner, S. N. Helicopter.

Scient. Amer., Vol. 122 (Mar. 6, 1920), New York, p. 245.

Man flight. See Flack, W. M.: The human machine in relation to flying.

Man power. Man-power flight.

Aer. Eng. Suppl. The Aeroplane, Vol. 21, No. 3 (July 20, 1921), London, p. 56.

Mandeville, J. B Aerial photography as applied to topographical surveys. Aerial Age, Vol. 11, No. 3 (Mar. 29,1920), New York, pp. 87-88, ill.

Manifolds Tests on Liberty, Benz, and Mercedes engine manifolds.

Ant. Ind., Vol. 42 (May 27, 1920), New York, pp. 1204-1207, ill., diagr.

Manly, Chaeles M. See Brewer, Griffith: The Langley machine and the Ham-mondsport trials.

Manning, W. O. On power plants.

Aer. Eng. Suppl. The Aeroplane, Vol. 18, No. 13 (Mar. 31, 1020), London, pp. 065-666.

Manometer. Pioneer low-pressure manometer.

Aeronautics, Vol. 20, n. s., No. 394 (May 5, 1921), London, p. 323, ill. Aviation, Vol. 10, No. 13 (Mar. 28, 1921), New York, p. 407, ill.

- See Norton, F. H., and D. L. Bacon: The tilting monometer.

Mantelburgee, Josef. Der Flugzeug-Modellbau.

Flug, Sondernummer (Dez. 1920), Wien, pp. 94-95.

Manuel, E. G. See Great Britain. Privy Council: Medical Research Council: The medical problems of flying . . .

Manufacture. Getting airplane details on a manufacturing basis. Amer. Mach., Vol. 55 (Dec. 1,1921), New York, pp. 8S0-S87, ill.

- What is required to construct a modern airplane.

Machinery, Vol. 27 (Nov. 1920), Now York, p. 260.

Manufacturers' Aircraft Association. Aircraft makers exhibit the 1920 commercial models; second national show of the Manufacturers' Aircraft Association. Aut. Ind., Vol. 42 (Mar. 11, 1920), New York, pp. 643-649, 111.

- Aircraft Yearbook, 1920.

New York, Doubleday, Page & Co., 1920, pp. 333, 111.

Manufacturers' Aircraft Association. Attorney General asked to investigate Manufacturers' Aircraft Association.

Aerial Age, Vol. 11, No. 7 (Apr. 20, 1920), New York, pp. 214, 234.

—— British air power and air policy. Analysis of British air appropriations, 19211922.

Aviation, Vol. 10, No. 19 (May 9,1921), New York, pp. 600-604.

- Grand jury investigation of Manufacturers' Aircraft Association requested.

Aerial Age, Vol. 11, No. 18 (July 12,1920), New York, pp. 607-608, 626.

—■—■ Manufacturers' Aircraft Association requests cooperation.

Aerial Age, Vol. 13, No. 23 (Aug. 29,1921), New York, p. 585.

- Manufacturers' Aircraft Association misrepresents patent situation.

Aerial Age, Vol. 11, No. 19 (July 19,1920), New York, pp. 639-640.

- United States commercial aircraft companies.

Aviation, Vol. 10, No. 10 (Mar. 7,1921), New York, pp. 299-301.

Mai'elTjI, Luigi. The Luigi Mapelli challenge cup.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 22 (June 1, 1921), London, p. 510, ill.

- The Mapelli and Schneider cup competition.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 25 (June 22, 1921), London, p. 568.

- Results of the Mapelli competition.

Aeronautics, Vol. 20, n. s., No. 381 (Feb. 3,1921), London, p. 84.

Mapes, Bruce A. Fokker model built by Bruce Mapes.

Aerial Age, Vol. 14, No. 9 (Nov. 7, 1921), New York, p. 209, ill.

Maps. Aerial map making is cheap and quick.

The Naviator, Vol. 1, No. 38 (Dec. 11,1920), Pensacola, Fla., pp. 1-2.

- Aerial photographic maps.

Aerial Age, Vol. 14, No. 14 (Dec. 12, 1921), New York, p. 318.

- Aeronautical maps.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 4 (Jan. 26,1921), London, p. SS. Aerial Age, Vol. 13, No. 20 (July 25, 1921), New York, p. 470. Aeronautics, Vol. 20, n. s., No. 399 (June 9,1921), London, p. 418. Flight, No. 630, Vol. 13, No. 3 (Jan. 20,1921), London, p. 40.

- America seen as a great relief map. How geographical and geological formations will be visualized in a coast to coast flight.

Aircraft Journal, Vol. 6, No. 24 (June 14,1920), New York, p. 4.

- Developing aeronautical maps.

Aircraft Journal, Vol. 6, No. 18 (May 1, 1920), New York, p. 5.

- International aeronautical maps.

Aerial Age, Vol. 12, No. 25 (Feb. 28, 1921), New York, p. 638.

- Photographic mapping of air routes. America to make a practical start.

Flight, No. 633, Vol. 13, No. 6 (Feb. 10, 1921), London, p. 99, ill.

- Wind maps for aviators.

Geographical Review, Vol. 10, No. 1 (July 1920), New York, p. 48.

- See Canada. Report on experimental aerial survey at Ottawa, 1920.

- See Commercial aeronautics: Mapping air routes for commercial flying.

- See Elton, Robert W.: Aerial mapping.

-- See Haynes, Robert E., and Ralph M. Like: Aerial mapping. Application of

aerial photography to commercial use.

- See "The Lincoln Imp": On aerial map making.

- See Mandeville, J. B.: Aerial photography as applied to topographical surveys.

Maps. See Mitchell, WUliam: General Mitchell on charting the air.

- See Orinoco: Mapping the Orinoco Delta.

- See Photographic surveying: Mapping with the squeeze of a bulb. -- See Photography: Army balloon maps, San Francisco.

- See Photography: Map making by air photography.

——■ See Routes: Mapping the aerial routes.

- See Sandifer, T. N.: Mapping the aerial routes.

Maranville, A. G. The Goodyear automatic gas valve.

Aviation, Vol. 8, No. 3 (Mar. 1, 1920), New York, p. Ill, ill.

Marchal, Anselme. Pourquoi je n'ai pas tenté la traversée de l'Atlantique. Vie Aérienne, 1920, Paris, pp. 855, 922, 937, 956,1036, 1041, ill.

Marchis, Lucien René André Edmond. L'aéronautique pendant la guerre mondiale. Publié avec l'appui du Sous-Secrétariat d'Etat de l'Aéronautique mihtaire et maritime et de la Chambre syndicale des Industries Aéronautiques, sous la direction de M. Marchis, professeur d'aviation à la Sorbonne. Paris, 1920, pp. 750, ill.

Reviewed in: L'Aérophile, 28. année, Nos. 9-10 (l01 mai 1920), Paris, p. xviii; Aéronautique, l" année, No. 10 (mars 1920), Paris, p. 463.

- Les avions actuels et le 6e salon de l'aéronautique.

L'Aérophile, 28. année, Nos. 3/4 (1«-15 févr. 1920), Paris, pp. 33-13, ‘11; Nos. 7-8 (1"-15 avril 1920), Paris, pp. 108-112, ill.

- See Brunoff, Maurice de: L'aéronautique pendant la guerre mondiale.

"Marco Polo." The case for the cantilever wing.

Flight, Vol. 12, Nos. 11-13 (Mar. 11-25, 1920), London, pp. 285-288, diagr., 311-312, 342-343.

- An immediate application of slotted aerofoils. Their use as interplane ailerons.

Flight, No. 666, Vol. 13, No. 39 (Sept. 29,1921), London, p. 648.

Marconi. See Wireless: Wireless telephony for aircraft. Demonstration by Marconi Co.

Marcotte, Edmond. Les matériaux de constructions mécaniques et aéronautiques. Paris, Dunod, 1920, pp. viii-414, ill.

Reviewed in: Aéronautique, 3» année, No. 31 (dec. 1921), Paris, p. 524.

——■ Les moteurs d'aéronautique.

Paris, Librairie de l'Enseignement Technique, 1921, pp. 274, ill.

- Pour la navigation aérienne nocturne. Le balisage lumineux.

L'Aérophile, 29. année, Nos. 7-8 (1«-15 avri 11921), Paris, pp. 99-109, ill.

Marqoulis, W. L'aérodynamique expérimentale en 1920.

Aéronautique, 3» année, Nos. 19-20 (Janv. 1921), Paris, pp. 269-276.

- Les ailes Joukowski: La théorie de l'hélice de Joukowski et de ses élèves.

Aéronautique, 3" année, No. 27 (août 1921), Paris, pp. 329-337.

- The Gordon Bennett airplane cup.

Technical Notes, National Advisory Committee for Aeronautics, No. 50 (Apr. 1921) Washington (mira.), pp. 13, diagrs.

- Lessons of the Gordon Bennett race, 1920.

Aviation, Vol. 10, No. 22 (May 30,1921), New York, pp. 691-692.

- A new method of testing models in wind tunnels.

Technical Notes, National Advisory Committee for Aeronautics, No. 52 (Aug. 1921) Washington (mim.), pp. 19, diagrs. Aerial Age, Vol. 14, No. 3 (Sept. 26, 1921), New York, pp 58-61. Aeronautics, Vol. 19, No. 373 (Dec. 9, 1920), London, pp. 412-413, charts.

44439—25-18

Margoulis. Nouvelle méthode d'essai de modèles en souffleries aérodynamique. L'Aérophile, 29. année, Nos. 1-2 (1«'-15 janv. 1921), Paris, pp. 14-20, diagrs.

- Notes on specifications for French airplane competitions.

National Advisory Committee for Aeronautics, Technical Notes No. 20, Washington, 1920, pp. 16.

Translated from the French by Paris office, N. A. C. A.

- The steadiness in engine sets.

National Advisory Committee for Aeronautics, Technical Notes No. 19, Washington, 1920, pp. 9, diagr.

- The steadiness factor in engine sets.

Aerial Age, Vol. 12, No. 26 (Mar. 7, 1921), New York, pp. 659-661.

- Value of model tests.

Aviation, Vol. 10, No. 2 (Jan. 10, 1921), New York, pp. 40-12.

Markers. Air service adopts location marker.

Aviation, Vol. 10, No. 17 (Apr. 25, 1921), New York, p. 527, ill.

Markiewicz, Ed. Un nouvel appareil Suisse.

Suisse Aérienne, 2« année, No. 19, (20 oct. 1920), Berne, pp. 289, ill.

- Les types modernes de moteurs d'avions.

Suisse Aérienne, 2« année, Nos. 9-10 (mai 1920), Berne, pp. 143.

- Le vol humain se perfectionne.

Suisse Aérienne, 3= année, 1921, No. 12, Berne, pp. 179-180, ill.

Marks. See Insignias: Aero squadron insignias approved by War Department.

- See Orcy, Ladisias d': International aircraft marking.

Marlbtjrian. See Lowe, F. Harold: The H. L. "Marlburian."

Marolles, Quelques aspects du problème de l'aviette.

L'Aérophile, 29. année, Nos. 5-6 (1"-15 mars 1921), Paris, pp. 85-86, diagrs.

Mars I. Cleaning up a racer. The "Mars I" ready for Martlesham. Flight, No. 677, Vol. 13, No. 50 (Dec. 15,1921), London, p. 832.

- The fastest aeroplane in the world.

The Aeroplane, Vol. 21, No. 25 (Dec. 21,1921), London, p. 602,

-- Mars I's wonderful performance at Martlesham. 212 miles per hour!

Flight, No. 678, Vol. 13, No. 51 (Dec. 22,1921), London, p. 838, ill.

- The winner of the London aerial derby.

Aerial Age, Vol. 14, No. 1 (Sept. 12,1921), New York, pp. 7-8, ill., diagr.

Marsh, Lockwood. Aviators as despatch carriers.

Flight, Vol. 12, No. 20 (May 13,1920), London, p. 523.

Marsh, William Lockwood. See Vivian, Evelyn Charles H., and William Lock-wook Marsh. A history of aeronautics, by E. Charles Vivian, with a section on progress in aeroplane design by W. Lockwood Marsh.

Marshall, C. F. D. Evolution of the "heavier-than-air" flying machine.

Engineer, Vol. 129 (Jan. 23, 1920), London, p. 83.

Marshall, Dorothy. See Stanton, T. E., Dorothy Marshall and E. Griffiths: On the dissipation of heat from the surface of an air-cooled engine when running and when at rest.

- See Stanton, T. E., H. C. Booth, and Dorothy Marshall: On the effect of surface

roughness on the heat transmitted from hot surfaces to fluids flowing over them, with special reference to the case of the gills of an air-cooled engine.

Marshall, Dorothy. See Stanton, T. E., and Dorothy Marshall: Preliminary note on the effect of surface roughness on the heat transmitted from hot bodies to fluids flowing over them.

Martell, P. Zur Geschichte der Fallschirme.

Tlug, Jahrg. 1920, Nr. 5 (Mai), Wien, pp. 42-48.

Marten, W. Strahlungsmessungen in zwei Ballonen.

III. Flug-Woche, 3. Jahrg., 9. Helt (27. April 1921), Leipzig, pp. 174-175. Luftweg, Nr. 15-16 (21. April, 1921), Berlin, pp. 119-120.

Martin. The home of the Martin bomber.

Aviation, Vol. 10, No. 25 (June 20,1921), New York, pp. 772-779, ill.

- The Martin exhaust silencer.

Aeronautics, Vol. 20, n. s., No. 392 (Apr. 21,1921), London, p. 278, diagr.

-■ New American torpedo plane.

Aeronautics, Vol. 18, No. 347 (June 10, 1920), London, pp. 444-445, ill.

- Un nouvel "avion lance-torpilles. "

Vie Aérienne, No. 187 (10 juin 1920), Paris, pp. 1183-1185, ill.

- Test of Martin torpedo plane.

Aerial Age, Vol. 10, No. 21 (Mar. 8,1920), New York, p. 782, ill. Air Power, Vol. 6, No. 3 (Mar. 1920), New York, p. 83, ill.

Martin, E. Stockton. Aircraft insurance and the aircraft industry. Aircraft Journal, Vol. 7, No. 13 (Sept. 27, 1920), New York, p. 7.

- The cost of aircraft insurance.

Aviation, Vol. 11, No. 1 (July 4,1921), New York, p. 12.

- Safety in aviation.

Aviation, Vol. 10, No. 11 (Mar. 14,1921), New York, p. 336.

Martin, Glenn L. Aerial transportation as a business proposition.

Aeronautics, Vol. 20, n. s., No. 396 (May 19, 1921), London, pp. 359-361.

Journ. Soc. Automotive Engineers, Vol. 8, No. 4 (Apr. 1921), New York, pp. 347-349.

TJ. S. Air Service, Vol. 5, No. 1 (Feb. 1921), New York, pp. 15-18, ill.

•- Airplane will compete with motor truck.

U. S. Air Service, Vol. 3, No. 3 (Apr. 1920), New York, pp. 24-25.

- The Glenn L. Martin commercial transport.

Aeronautics, Vol. 20, n. s., No. 377 (Jan. 6,1921), London, p. 3, diagr. Aviation, Vol. 9, No. 13 (Dec. 13, 1920), New York, pp. 426-428, diagr. Flight, No. 629, Vol. 13, No. 2 (Jan. 13,1921), London, pp. 27-28, ill.

--The Glenn L. Martin commercial transport biplane.

Aerial Age, Vol. 12, No. 15 (Dec. 20, 1920), New York, pp. 392^394, diagr.

- The Glenn Martin high-lift wing.

Aerial Age, Vol. 12, No. 23 (Feb. 14, 1921), New York, p. 585, diagr. Flight, No. 643, Vol. 13, No. 16 (Apr. 21,1921), London, p. 278.

- The Glenn L. Martin new type Navy torpedo plane.

Aerial Age, Vol. 11, No. 11 (May 24, 1920), New York, pp. 366-367, ill.

- The Glenn L. Martin new type Navy torpedo plane for U. S. Navy.

The Naviator, Vol. 1, No. 16 (May 29,1920), Pensacola, Fia., pp. 1,5, ill.

- The Glenn L. Martin torpedo plane.

Aviation, Vol. 8, No. 3 (Mar. 1,1920), New York, pp. 101-102, 111.

- The Glenn L. Martin transport biplane.

Aer. Eng. Suppl. The Aeroplane, Vol. 20, No. 8 (Feb. 23, 1921), London, pp. 186-188, ill

268 BIBLIOGRAPHY OP AERONAUTICS, 1!)20-1921.

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Flugsport, 13. Jahrg., Nr. 5 (2. März 1921), Frankfurt, p. 120, ill.

- A new American high-lift wing. The Glenn Martin No. 2.

Flight, No. 634, Vol. 13, No. 7 (Feb. 17,1921), London, p. 117, diagr.

- New Glenn L. Martin airplanes.

Aviation, Vol. 7, No. 11 (Jan. 1, 1920), New York, pp. 475-470, ill.

- The new Glenn L. Martin high-lift wing.

Aviation, Vol. 10, No. 7 (Feb. 14, 1921), New York, p. 212, diagr.

- New Glenn L. Martin Navy torpedo plane.

Aviation, Vol. 8, No. 9 (June 1, 1920), New York, pp. 359-360, ill.

—■—■ New York to San Francisco in 12 hours.

Aircraft Journal, Vol. 6, No. 14 (Apr. 3,1920), New York, pp. 3-4, ill.

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Martin, Howard H. Relation of winds to temperature in central Ohio.

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Martin, Jas. V. Retractable chassis as an aid to aeroplane speed and efficiency. Aerial Age, Vol. 12, No. 10 (Nov. 15,1920), New York, p. 274, ill.

Martinot-Lagarde. Description technologique de quelques moteurs. Aéronatique, 2« année, No. 15 (août 1920), Paris, pp. 110-113, ill.

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Aéronautique, 3" année, No. 23 (avril 1921), Paris, pp. 175-177, ill.

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Aéronautique, 3» année, No. 26 (jull. 1921), Paris, pp. 276-277, ill.

--Les moteurs d'aviation français en 1920.

Aéronautique, 3= année, Nos. 19-20 (janv. 1921), Paris, pp. 296-305, ill.

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Flight, Vol. 12, No. 25 (June 17,1920), London, pp. 637-641, ill.

- See Sanders, J. F.: A Martinsyde "mother" in Spain and Portugal.

Martinsyde (Ltd.). Martinsyde (Ltd.).—Meeting of creditors.

Aeronautics, Vol. 20, n. s., No. 402 (June 30, 1921), London, p. 484.

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Aeronautics, Vol. 19, No. 356 (Aug. 12, 1920), London, pp. 125-126.

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Flight, Vol. 12, No. 33 (Aug. 12, 1920), London, pp. 879-882, ill.

- See Ah Ministry: The Air Ministry competition at Martlesham. A brief log of

the progress made.

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Marvel, O. E. Radio apparatus including direction finders.

u. s. Air Service, Vol. 5, No. 6 (July 1921), New York, pp. 34-35.

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Mascots. Aerial mascots—How animals behave in the air.

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Aor. Fng. Suppl. The Aeroplane, Vol. 19, No. 10 (Sept. 8, 1920), London, pp. 479-480.

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Rivista marittima (giugnio 1920), Roma, pp. 19-23.

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Report of the Aeronautical Research Committee for the year 1920-21, H. M. Stationery Office, Cmd. 1458, London, 1921, pp. 46-50.

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Engineering Division Air Service, Technical Orders No. 7 (Apr. 1919), Dayton, Ohio, pp. 70-73, figs.

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Matienzo, Benjamin. Muerte del teniente aviador Benjamin Matienzo. Tohtli, ano5, Nûm. 1 (agosto 1920), Mexico, p. 13.

Matthews. Un document intéressant.

Vie Aérienne, No. 170 (12 févr. 1920), Paris, p. 963.

Matthews, R. Borlase. The aviation pocketbook for 1919-1920. A compendium of modern practice and a collection of useful notes and formulas, rules, tables, and data relating to aeronautics.

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London, Crosby, Lockwood & Son, pp. 536.

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Maxfield, L. II. Life in the hold of the ZR-2.

TJ. s. Air Service, Vol. 5, No. 2 (Mar. 1921), New York, pp. 25-27, ill.

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Aviation, Vol. 10, No. 1 (Jan. 3, 1921), Now York, pp. 15-16.

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Engineer, Vol. 129 (Feb. 6, 1920), London, pp. 138-139.

May, II. See Campbell, C. I. R., and H. May: Effect of size upon performance of rigid airships.

May, AY alter J. Cast-metal parts in aeroplane construction.

English Mech., Vol. 110, No. 2852 (Nov. 21,1919), pp. 205-206, figs.

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Mech. World, Vol. 66, No. 1712 (Oct. 24,1919), p. 198, figs.

Maybach. See Sparrow, S. W.: Performance of Maybach 300 horsepower.

Maynard, B. W. Impressions de vainqueurs: ma plus forte émotion. Vie Aérienne, No. 164 (l«rjanv. 1920), Paris, pp. 856-857, ill.

Mayo, R. H. Paris aeronautical exhibition.

Engineering, Vol. 112, No. — (Dec. 9, 23, 1921), London, pp. 795-797, 862.

Mechanics. See McKay, Hugh D.: Training the commercial airplane mechanic.

Medals. See Battle, George Gordon: Medals for service in war. The provisions of the Pell bill.

- See Tinker, Clifford Albion: Josephus Daniels and the medal muddle.

- See Wright, Orville: Orville Wright awarded John Fritz medal.

Medical. The medical problems of flying.

Aerial Age, Vol. 12, No. 24 (Feb. 21,1921), New Y'ork, p. 615. Aviation, Vol. 10, No. 8 (Feb. 21, 1921), New York, p. 244.

- See Parsons, J. A.: The medical aspect of commercial flying.

—— See Psychology: The medical aspects of flying.

Medical Research Laboratory. Report of the Medical Research Laboratory and School for Flight Surgeons for the calendar year 1920.

Air Sendee Information Circvdar, Vol. 3, No. 231 (May 20, 1921), Washington, pp. 12.

Medicine. Medical officer's impression of first flight.

Aircraft Journal, Vol. 6, No. 19 (May 10, 1920), New York, pp. 5-6.

- The medical examination of civilian pilots, navigators, and engineers.

London, 1920, C. A. Publication 1, H. M. Stationery Office.

—— The medical problems of flying.

Medical Besearch Council, Report No. 53, London, 1920.

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Aéronautique, Ie année, No. 12 (mai 1920), Paris, pp. 505.

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"Medway." How to make a success of the aero show.

Aer. Eng. Suppl. The Aeroplane, Vol. 19, No. 4 (July 28, 1920), London, pp. 256, 258, ill.

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U. S. Air Service, Vol. 5, No. 3 (Apr. 1921), New York, p. 37.

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Aerial Age, Vol. 12, No. 14 (Dec. 13,1920), New Y'ork, pp. 368-369, 373. Monthly Weather Review, U. S. Department of Agriculture, Vol. 48, No. 9 (Sept. 1920), Washington, pp. 52.5-529.

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Aviation, Vol. 9, No. 13 (Dec. 1920), Now York, pp. 423-425.

Meisinqer, 0. Lk Eor. The weather factor in aeronautics.

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Mélandri, Antonin. Ceux qui disparaissent Antonin Mélandri.

L'Aérophile, 20. année, Nos. 9-10 (1«-15 mai 1921), Paris, p. 134

Melot. A new system of propulsion.

Aeronautics, Vol. 18, No. 331 (Feb. 19, 1920), London, p. 1.57, ill.

Mendenhall, Charles E. Aeronautic instruments.

Aerial Age, Vol. 12, Nos. 20-21 (Jan. 24-31, 1921), New York, pp. 512-515, 537-539, 549, ill. Journ. Frankl. Inst., Vol. 191, No. 1 (Jan. 1921), Philadelphia, pp. 57-80.

Meneti, Domenico. Il pallone sferico senza rete.

L'Aeronautica, anno 3, Num. 9 (nov. 1920), Roma, pp. 318-320, ill.

Menoher, Charles T. Airplane most potent weapon ever produced by man. U. S. Air Service, Vol. 5, No. 3 (Apr. 1921), New York, p. 15.

- Annual report of Director Air Service.

The Naviator, Vol. 1, No. 39 (Dec. 18, 1920), Pensacola, Fia., pp. 1, 3.

- General Menoher's annual report.

Aviation, Vol. 9, No. 11 (Dec. 20, 1920), New York, pp. 448-452, ill. Chief of Air Service.

- General Menoher on commercial aeronautics.

Aviation, Vol. 10, No. 15 (Apr. 11,1921), New York p. 472.

■- General Menoher resigns Air Service post.

Aerial Age, Vol 14, No. 3 (Sept. 26, 1921), New York, pp. 52-53

•- Present status of military aeronautics in United States.

Journ. Soc. Automotive Engineers, Vol. 6 (May, 1920), New York, pp. 290-292.

- Pvecruitiug skilled mechanics.

Aviation, Vol. 9, No. 8,1920, New York, p. 266.

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Annual Reports, War Department, fiscal year ended June 30, 1920, Washington, Government Printing Office, 1920, pp. 1-49.

- See Air Service: Annual report of the Director of the Air Service.

- See Pershing, John J., and Menoher, Charles T.: General Pershing's air service

views.

Mbnoher-Mitchkll controversy. The press on the Menoher-Mitchell controversy. Aerial Age, Vol. 13, No. 15 (June 23, 1921), New York, pp. 339, 359.

Merbold, M. Technische Neuigkeiten: Strebenverkleidung und neuer Strebenkopf für Flugzeuge. Feuerschutz für das Flugwesen.

Flugwelt, 2. Jahrg., 5. Heft (3. Marz 1920), Leipzig, pp. 147-119, ill.

Merchdes. The 180-horsepower Mercedes aircraft engine.

Aul. Ind., Vol. 39, No. 11 (Sept. 12,1918), Chicago, pp. 453-456, ill.

- - Notes on spindle correction.

The Ace, Vol. 2, No. 6 (Jan. 1921), Los Angeles, p. 19.

- Report on the 2fi0-horsepower Mercedes aero engine.

Loudon, H. M. Stationery Office [1921].

- See Manifolds: Test on Liberty, Benz, and Mercedes engine manifolds.

Merchant marine. United States to lead in aerial merchant marine. The Naviator. Vol. 1, No. 17 (June 5,1920), Pensacola, Fia., p. 1.

Merica, Paul D. Aluminum and its light alloys.

Aerial Age, Vol. 10, No. 13 (Jan. 12, 1820), New York, pp. 503, 511.

Meriel, L. Pour la sécurité aérienne. Ce dont on ne parle pas.

L'Aérophile, 29. année, Nos. 1-2 (1«-15 janv. 1921), Paris, pp. 12-13.

Merrill, Albert A. Notes on spindle correction.

The Ace, Vol. 2, No. 6 (Jan. 1921), Los Angeles, p. 19.

- Recording instrument for use in wind tunnels.

Aviation, Vol. 8, No. 5 (Apr. 1, 1920), New York, pp. 190-191, ill.

- Some experiments with model airplanes.

Aviation, Vol. 9, No. 11 (Nov. 29, 1920), Now York, pp. 349; Vol. 10, No. 5 (Jan. 31,1921), pp. 132-133.

- Variation in resultant pressure upon landing due to the proximity of the earth.

The Ace, Vol. 2, No. 5 (Deo. 1920), Los Angeles, p. 19, diagr.

Merivale, Philip. The wind over the water.

The Contemporary Series, Boston, Four Seas Co., 1921, pp. 60.

Mertes, M. Das Luftschiff in Weltverkehr.

Luftweg, Jahrg. 4, Heft 40-41 (21. Okt. 1020), Berlin, pp. 2-3, ill; Heft 42-43 (4. Nov.) pp. 9-12; Heft 44-45 (18. Nov.), pp. 5-6.

Mesopotamia. Air work in Mesopotamia.

Flight, Vol. 12, No. 40 (Sept. 30, 1920), London, p. 1038.

- The control of Mesopotamia by the 11. A. F.

The Aeroplane, Vol. 21, No. 13 (Sept. 2.8,1921). London, p. 271.

- The new desert air route to Mesopotamia.

Flight, No. 657, Vol. 13, No. 30 (July 28, 1921), London, p. 508. —— See Churchill, Winston: Aircraft in Mesopotamia.

- See Tennant, John Edward: In the clouds above Bagdad, being the records of

an air commander.

Messerschmitt, W. Der 21-Minuten-FIug auf dem Heidelstein am 13. September 1921.

Zeitschr. Flugt. Motorluftsch., 12. Jahrg., 20. Heft (15. Okt. 1921), München, pp. 302-303.

Metal airplanes. An all-metal biplane.

Everyday Engineering Magazine, Vol. 9, No. 2 (May 1920), New York, p. 137. Austin "whippet" is a biplane of English design.

- What the all-metal airplane can do.

Scient. Amer., Vol. 123 (July 10,1920), New York, p. 43, ill.

- See Germany: Design and structure of the German metal airplane.

-- See Gradenwitz, Alfred: German all-metal commercial machines.

- See Hildesheim, Erik: The German all-metal aeroplanes.

- See JL: JL all-metal airplane comprises novel engineering features.

- See Junker: The Junker all-metal machines.

-- See Junker: Junker metal airplanes.

- See Junkers, IL: Constructing metal aeroplanes.

- See Talbot, F. A.: All-metal biplane for all-round use.

Metal construction. Metal construction in aircraft.

Metal Industry, Vol. 16, No. 8 (Feb. 20, 1920), London, p. 150.

- See An engineer: Metal construction.

- See Construction: Metal construction.

Metal construction. See Germany: German all-metal commercial machines.

- See Lémonon, E.-H.: Les nouveaux avions métalliques allemands. Les avions

Junkers.

- See Nicholson, J. S.: Development of metal construction in aircraft.

- See Staaken monoplane: The new Staaken monoplane. An interesting German

all-metal machine.

- See Sayers, W. H.: Metal construction at the Paris show.

- See Stout, William P>.: Veneer or metal construction.

Metal monoplanes. See Zeppelin-Staaken: The Zeppelin-Staaken all-metal monoplane.

Metal planes. Army officers see great possibilities in metal plane.

Automotive Manufacturer, Vol. 62, No. 4 (July 1920), New York, p. 26.

- See Dornier: A new German all-metal machine.

Metal ribs. See Winters, S. R.: Something new in the way of metal ribs.

Metals. See Dalby, W. E.: Researches on the elastic properties and plastic extension of metals.

- See Hanby, Wilfred: Metals in aircraft construction.

--See P. R. Corona metal: A new yellow metal.

"Meteor." Weather and aviation.

Aeronautics, Vol. 18, No. 327 (Jan. 22, 1920), London, pp. 91-93.

Meteorology. Aerial navigation and meteorology.

Nature, Vol. 105 (Aug. 19, 1920), London, pp. 775-776.

Discusses merits of woather code of Annex G of the Convention for International Air Navigation.

- Atlantic weather conditions.

Aeronautics, Vol. 19, No. 357 (Aug. 19, 1920), London, p. 145.

-- Behavior of eddies over mountain tops.

Aircraft Journal, Vol. 6, No. 1 (Jan. 3, 1920), New York, p. 9, diagr.

- Cinematografoe meteorologia.

L'Aeronautica, anno 3, Num. 5-6 (luglio-agosto, 1920), Roma, p. 231.

- Cloud and visibility signals.

Aeronautics, Vol. 19, No. 359 (Sept. 2, 1920), London, p. 186.

- Daily weather report for aviators by radio.

Aerial Age, Vol. 13, No. 13 (June 6,1921), New York, pp. 298-299.

- Effect of abnormal weather on aeroplane performance.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 4SS-489.

- Flying over clouds.

Aer. Eng. Suppl. The Aeroplane, Vol. IS, No. 20 (May 19, 1920), London, pp. 1000-1006.

- Hourly meteorological reports.

Aeronautics, Vol. 19, No. 358 (Aug. 26, 1920), London, p. 170.

- Memorandum by the Director of the Meteorological Office. Special inquiry

for the Air Service into the conditions for the occurrence of fog.

Tech. Rept.'Advis. Com. Aeronautics, 1916-17, Vol. 2, I-ondon, 1920, pp. 712-714.

- Meteorological reports.

Aeronautics, Vol. 19, No. 372 (Dec. 2,1920), London, pp. 404-405.

- Meteorological reports reveal curious facts.

Aviation, Vol. 9, No. 9 (Nov. 15, 1920), New York, p. 288.

Meteorology. Meteorology.

Report of the Aeronautical Research Committee for the year 1920-21, H. M. Stationery Office, Cmd. 1458, London, 1921, pp. 32-39.

- Meteorology in the service of aviation.

Aerial Age, Vol. 13, Nos. 11,15 (May 23-June 20, 1921), New York, pp. 254-350.

- Meteorology in the war.

Flight, No. 665, Vol. 13, No. 38 (Sept. 22, 1921), London, p. 632.

- Note on the tail method of observing pilot balloons.

Tech. Rept. Advis. Com. Aeronautics, 1916-17, Vol. 2, London, 1920, pp. 732-735, diagr.

- Use of aeroplanes for studying the atmosphere.

Review of Reviews, Vol. 61 (Feb. 1920), New York, p. 209.

——■ The Weather Bureau and aeronautics.

Air Power, Vol. 6, No. 4 (Apr. 1920), New York, pp. 115, 117.

- Weather data available for aviators.

Aerial Age, Vol. 12, No. 18 (Jan. 10,1921), New York, p. 461.

—— Weather reports and aviation.

Aviation, Vol. 9, No. 7 (Nov. 1, 1920), New York, p. 224, map.

- What airman can do for meteorology.

Aviation, Vol. 10, No. 13 (Mar. 28, 1921), New York, pp. 397-398.

- Work of the meteorological section of the Signal Corps.

Aerial Age, Vol. 10, No. 18 (Feb. 16, 1920), New York, p. 665.

- See Brooks, Charles F.: Effect of winds and other weather conditions on the

flight of airplanes.

- See Buckwald, H. M.: Atmospheric data.

- See Carpenter, Ford A.: A university course in meteorology.

- See Baldit, Albert: Études élémentaires de météorologie pratique.

- See Bilham, E. G.: The structure of the atmosphere over Benson (Oxon) on

3d March, 1920.

•- See Clarke, George A.: Clouds.

■- See Dobson, G. : Meteorology in the service of aviation.

—— See Dobson, G. M. B.: Observations of wind structure made at Upavon in 1914. ■- See Dufneld, W. G.: Meterology. Lightning.

- See Edwards, Junius David, and Maurice Blaine Long: Solar radiation and

balloons.

■- See France: Aerodromes and meteorological stations.

-■ See France: L'office national météorologique.

■- See Geddes, A. E. M.: Meteorology.

-• See Gold, E.: Aerial navigation and meteorology.

- See Grant, Hugh Duncan: A contribution to the meteorology of the English

Channel.

- See Jacquerod, M. A.: Recherches négatives sur un nouveau constituant de

l'air atmosphérique.

- See Johnson, N. K. : A report on two pilot balloon ascents made at Shoeburyness.

- See Joyce, Temple N.: Effects of wind upon the stability and maneuverability

of an airplane in flight.

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Aircraft Journal, Vol. 6, No. 4 (Jan. 24, 1920), New York, p. 12.

—- Air Service officers furnished by each State.

Aircraft Journal, Vol. 6, No. 3 (Jan. 17,1920), New York, p. 16.

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- First target firing from air at national rifle matches.

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—— How airplanes land on decks of warships.

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■ - ■ Joint Army and Navy board on aeronautics. (Gives names of members of board.)

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- Keeping the guns greased.

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——• See [Clapp, Frederick Mortimer]: A history of the 17th aero squadron. . . . December, 1918.

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have been released since November 11, 1918; tabulation.

——- See Great Britain: Cooperation of aircraft with artillery.

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Miller-Metcalp amphyglider. The Miller-Metcalf amphyglider. An air-propeller-driven light car, readily adapted to aquatic use.

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Mills, C. H. French military aviation criticised.

TJ. S. Air Service, Vol. 6, No. 5 (Dec. 1921), New York, pp. 25, 32.

Milne, E. A. Sound waves in the atmosphere.

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Mineola. The air transport demonstration at Mineola.

Aviation, Vol. 11, No. 19 (Nov. 7, 1921), New York, pp. 530-537, ill.

-■ Army wins trophy race at Mineola.

The Naviator, Vol. 1, No. 37 (Dec. 4, 1920), Pensacola, Fia., p. 1.

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- Aviation Day, Mineola, October 16.

Aviation, Vol. 11, No. 14 (Oct. 3,1921), New York, p. 403.

- Collegiate flying competition at Mineola.

Aircraft Journal, Vol. 6, No. 20 (May 17, 1920), New York, pp. 5-6, ill.

Mines. See Bailey, F. J.: Airplanes in mine rescue work.

- See Bisbee, E. S.: Airplanes in mining operations.

- See Bisbee, E. S.: Pack train of eagles; use of aircraft in mining operations.

Mine rescue work. Use of airplanes in mine rescue work.

Aircraft Journal, Vol. 7, No. 2 (July 12, 1920), New York, p. 7.

- See Bailey, F. J.: Airplanes in mine rescue work.

Mingos, H. L. Cities preparing for future air traffic.

American City, Vol. 22 (Feb. 1920), New York, pp. 107-109, ill.

Minneapolis. Aero Club of Minneapolis. '

Flying, Vol. 9, No. 12 (Jan. 1921), New York, p. 729.

Mirgtjet, Henri. Impressions d'ensemble d'un "ancien."

L'Aérophile, 29. armée, Nos. 23-24 (1"-15 déc. 1921), Paris, pp. 355-356, ill.

Mises, R. v. Zur Theorie des Tragflächenauftriebes.

Zeitschr. Flugt. Motorluftseh., 11. Jahrg., Heft 5 (15. März 1920), Berlin, pp. 68-72.

Mitchell, William. Air mail service.

Review of Beviews, Vol. 62 (Dec. 1920), New York, pp. 625-632, ill., map.

- Aviation over the water.

Review of Reviews, Vol. 62 (Oct, 1920), New York, pp. 391-398, ill.

- Brigadier General Mitchell's startling testimony.

Aviation, Vol. 10, No. 6 (Feb. 7,1921), New York, pp. 164-167.

- Criticism of General Mitchell expressed by aeronautical board of the Army and

Navy.

The Naviator, Vol. 1, No. 18 (June 12, 1920), Pensacola, Fia., p. fl.

- General Mitchell attacks bomb test findings.

Aviation, Vol. 11, No. 13 (Sept. 26, 1921), New York, p. 367.

- General Mitchell courageously defends Air Service.

Aerial Age, Vol. 14, No. 3 (Sept. 26, 1921), New York, p. 63.

Mitchell, William. General Mitchell on bomhing.

Aerial Age, Vol. 15, No. 5 (Oct. 10,1921), New York, p. 99.

- General Mitchell on charting the air.

Aerial Age, Vol. 13, No. 2 (Mar. 21,1921), New York, p. 39.

- General Mitchell on the aero show.

Aircraft Journal, Vol. 6, No. 11 (Mar. 13, 1920), New York, pp. 14-15.

- General Mitchell on the Air Service appropriations.

Aerial Age, Vol. 12, No. 22 (Feb. 7,1921), New York, p. 562.

——■ General Mitchell on the foreign aircraft invasion.

Aircraft Journal, Vol. 6, No. 24 (June 14, 1920), New York, p. 3.

- General Mitchell retained in Air Service. Secretary of War Weeks adjusts

differences between chief Air Service officers.

Aviation, Vol. 10, No. 26 (June 27, 1921), New York, p. 800.

•- General Mitchell tells House committee airplanes can destroy battleships.

States 1,000 airplanes can be built for cost of one battleship. TJ. S. Air Service, Vol. 5, No. 1 (Feb. 1921), New York, pp. 22.

•-■ Has the aeroplane made the battleship obsolete?

World's Work, Vol. 41, No. 6 (Apr. 1921), New York, pp. 550-555, ill.

- Law of the air.

Outlook, Vol. 126 (Dec. 1, 1920), New York, pp. 615-617.

- The mission of an air force in the military organization of the United States.

U. S. Air Service, Vol. 3, No. 6 (July 1920), New York, pp. 13-16, ill.

•-' Our air force, the keystone of national defense.

New York, E. P. Dutton & Co. [1921], pp. xxvi, 223, ill.

- Our Army's air service.

Review of Reviews, Vol. 62 (Sept. 1920), New York, pp. 281-290, ill.

- What General Mitchell claimed.

Aviation, Vol. 11, No. 5 (Aug. 1, 1921), New York, pp. 133-134, ill.

--See United States Congress; House; Committee on Naval Affairs: Naval policy

of the United States.

Mitteilungen des Oesterreichischen Aero-Clubs, zugleich Mitteilungen des Oesterreichischen Luftschiffer-Verbandes und der Oesterreichischen Aeronautischen Kommission.

Jänner, 1920, April, 1921.

Model testing. See Bacon, D. L.: The advantages and limitations of model testing in wind tunnels.

Models. The classification of model aeroplane types.

Aerial Age, Vol. 13, Nos. 5-6 (Apr. 11-18, 1921), New York, pp. 113, 137.

- A compressed-air driven model.

Fligbt, Vol. 12, No. 27 (July 1, 1920), London, p. 699, diagr.

- Early model aeroplanes.

Aerial Age, Vol. 13, No. 7 (Apr. 25, 1921), New York, p. 161.

- Exhibits at the aero show.

Flight, Vol 12, No. 29 (July 15, 1920), London, p. 787; No. 31 (July 29, 1920), p. 849. Olympia sliow.

■-■ Geschichte der Flugmodelle.

Aut. Flugv., Nr. 11 (Nov. 1921), Berlin, pp. 456-457, ill.

—■— A light-weight hydro model.

Aerial Age, Vol. 13, No. 9 (May 9, 1921), New York, p. 209, ill.

44439—25-19

Models. Model aeroplanes.

night, Vol. 12, Nos. 38-53 (Sept. 16-Dec. 30, 1920), London, pp. 1007, 1049, 1069, 1117, 1139, 1161, 11S3-11S4, 1203, 1225, 1245, 1263, 12S3, 1301, 1319.

- Model firms at the forthcoming Olympic aero show.

Flight, Vol. 12, No. 28 (July 8, 1920), London, p. 743, ill.

- Plans for building compressed-air model.

Aerial Age, Vol. 13, No. 25 (Aug. 29, 1921), New York, p. 597, diagr.

- Some consideration on model contests.

Aerial Age, Vol. 13, No. 15 (June 20, 1921), Now York, p. 353.

- Some experiments with model aeroplanes.

Aeronautics, Vol. 20, n. s., No. 398 (June 2, 1921), London, pp. 395-397.

- See Bryant, L. W., H. B. Irving, and W. L. Cowley: Tests of a model seaplane.

- See Bryant, L. W., and H. B. Irving: Tests on model "Bristol" twin tractor

biplane.

- See Cowley, W. L., L. G. Simmons, and J. D. Coales: Tests on the complete

model of F. E. 5 aeroplane.

- See Finsbury: Finsbury and district model research association.

- See Griffiths, E. A., and C. H. Powell: Experiments on models of airship screens.

- See Griffiths, E. A., and C. H. Powell: Model test on fairing for chassis axle.

- S