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Luftfahrtgeschichte: Bibliography of Aeronautics 1927 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 zehnter Band eine Bestandsaufnahme der internationalen Luftfahrtliteratur im Jahre 1927.

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BIBLIOGRAPHY OF AERONAUTICS

1927

NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS

UNITED STATES GOVERNMENT PRINTING OFFICE WASHINGTON 1928

INTRODUCTION

This Bibliography of Aeronautics for 1927 covers the aeronautical literature published from January 1 to December 31, 1927. The first Bibliography of Aeronautics was published by the Smithsonian Institution as Volume 55 of the Smithsonian Miscellaneous Collections and covered the material published prior to June 30, 1909. Supplementary volumes of the Bibliography of Aeronautics for the subsequent years have been published by the National Advisory Committee for Aeronautics. The last preceding volume was for the calendar year 1926.

As in the previous volumes, citations of the publications of all nations are 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 in 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.

Joseph S. Ames, Chairman, National Advisory Committee jor Aeronautics.

October 18, 1928.

in

/

ABBREVIATIONS

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

Amer. Mach........________.....____American Machinist, New York.

Atti Assoc. Ital. Aerotechn____________Atti dell' Associazione Italiana di Aero-

technica, Roma.

Aut. Eng___________________________Automotive Engineering, New York.

Aut. Mot. Flugw___»_________________Automobil-Motorrad-Flugwesen, Berlin.

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________________ The Bulletin, Aero Club Suisse, Berne.

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. Jour.....______________Electric Railway Journal, New York.

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

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. Aer. Soc.......___________Journal of the Royal Aeronautical Society, London.

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.

Nat. Geogr. Mag___........___________National Geographic Magazine, Washington, D. C.

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.

Proc. Amer. Phil. Soc......_.......Proceedings of the American Philosophical Society, Philadelphia.

Proc. U. S. Nav. Inst______......____Proceedings of the United States Naval

Institute, Annapolis, Md.

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

Rend. Instituto Sper. Aer_____________ Rendiconte dell' Instituto Sperimentale

Aeronautico, Roma.

Rend. Teen. Dir. Sup. Geno. Costr. Commissariato dell' Aeronautica. In-Aeron. tendenza Generale. Rendiconti Tec-

nici della Direzione Superiore del Genio e delle Costruzioni Aeronautiche. Roma.

Rév. Gén. Scien_„_____,._____________ Révue Genérale Scientifique, Paris.

Riv. Ital. Aeron________________Rivista Italiana Aeronautica, Roma.

Sat. Even. Post______.________Saturday Evening Post, Philadelphia,

. . • Pa.

Scient. Amer______________________Scientific American, New York.

Techn. Berichte......________________ Technische Berichte, Charlottenburg.

Tech. Rept. Advis. Com. Aeronautics._ Technical Report of the Advisory Com^-

mittee on Aeronautics, London.

Zeitschr. Flugt. Motorluftsch__________Zeitschrift fur Flugtechnik und Motorluftschifffahrt, München.

Zeit, österr. Ing. Arch. Ver___________ Zeitschrift des Oesterreichischen Inge-

nieuer- und Architekten - Vereines, 0000.

Zeitschr. Ver. deutschr Ing__________„ Zeitschrift des Vereines deutscher In-

geneure, Berlin.

BIBLIOGRAPHY OF AERONAUTICS

1927

By PAUL BROCKETT

VII

BIBLIOGRAPHY OF AERONAUTICS, 1927

By Paul Brockett

A

Aachen. See Kärmän, Th. von: Abhandlungen aus dem Aerodynamischen Institut an der Technischen Hochschule Aachen.

Abraham, Martin. Abnutzung von Flugzeug-Steuerseilen. Versuche mit Führungsrollen.

Zeitsch. Flugt. Motorluftsch., 18. Jahrg., 16. Heft (29. Aug. 1927), München, pp. 369-374, ill., tables.

Acampora, L. I registri di classificazione degli aeromobili.

Rivista Aeronautica, Anno 3, N. 4 (Aprile 1927), Roma, pp. 45-51.

Accelerograph. See H. M. P.: L'accelerographe H. M. P.

Accessories. See Franck, P.: Les accessoires des avions.

Accidents. Accidents to aeroplanes involving flutter of the wings.

Aeronautical Research Committee, Reports and Memoranda, No. 1041 (A.3), Dec, 1925, London, 1927, pp. 19, ill., diagr.

- Mob-murdered aviators.

Nation, Vol. 125 (Sept. 21, 1927), New York, p. 276.

- On accidents and their prevention.

Aeroplane, Vol. 32, No. 13 (Mar. 30,1927), London, pp. 321-328.

- Paying the cost of crashes.

Independent, Vol. 119 (Sept. 10,1927), Boston, pp. 243-244.

- Sad secrets of the port of missing planes.

Literary Digest, Vol. 94 (Sept. 24, 1927) New York, pp. 56-62, ill.

- To make flying safer.

Literary Digest, Vol. 94 (July 23, 1927), New York, pp. 11.

- See Russell, Roy E.: Transportation accidents.

Ackeret, J. Drag measurements of two thin wing sections at different index values.

National Advisory Committee for Aeronautics, Technical Memorandums No. 417, June 1927, Washington, pp. 7, ill., diagrs., tables. From Report III of the Güttingen Aerodynamic Institute, 1927.

- Experiments on airfoils with trailing edge cut away.

National Advisory Committee for Aeronautics, Technical Memorandums No. 431, September 1927, Washington, pp. 9, ill., diagrs., tables. From Report III "Ergebnisse der Aerodynamischen Versuchsanstalt zu Göttingen.

- Removing boundary layer by suction.

National Advisory Committee for Aeronautics, Technical Memorandums No. 395, Jan. uary 1927, Washington, pp. 23, ill., tables. From "Zeitschrift des Vereines deutscher Ingerieur" August 28,1926.

Acosta, Bert. See America: Les grands voyages aériens. Avec quatre hommes à bord, l'"America" traverse l'Atlantique.

Acosta-Chamberlin. Fifty-one hours in the air: Acosta-Chamberlin- nonstop flight.

Literary Digest, Vol. 93 (Apr. 30, 1927), New York, p. 13, ill.

Adams, Lowell P. The flying university.

Popular Aviation, Vol. 1, No. 1 (Aug. 1927), Chicago, pp. 36-37, ill.

Adams, Porter. Porter Adams reelected president of N. A. A.

U. S. Air Services, Vol. 12, No. 10 (Oct., 1927), Washington, D. C, p. 32.

Adelt, L. Ocean air-liners: German plans and prospects. Living Age, Vol. 332 (June 15, 1927), Boston, pp. 1104-1106.

Ader, Clément. Clément Ader. Il y a trente ans-octobre 1897—gue l'Avion no. III faisait â Satory, le premier vol officiel de l'histoire.

L'Aérophile, 35e année, Nos. 19-20 (ler-15 oet. 1927), Paris, pp. 290-294, ill., port.

Aero Chamber of Commerce. Aero Chamber of Commerce congratulates President. Expresses approval of messages and policy of sound expansion Aviation. Vol. 22, No. 1 (Jan. 3,1927), New York, pp. 14-15, ill.

Aéro-Club de France. See H. C: Le Ve Congrès des sociétés affiliées à l'Aéro-Club de France.

- See Jaffeux, M.: Rouen-Aérien ou le Ve rallye de l'Aéro-Club de France.

Aero Supply Mfg. Co. The Aero Supply Manufacturing Company popular though in obscure rôle.

Slipstream, Vol. 8, No. 2 (Feb. 1927), Dayton, Ohio, pp. 20-22, 32, ill.

Aeroarctic. See Breitfuss, Leonid: Internat. Studiengesellschaft zur Erforschung der Arktis mit dem Luftschiff (Aeroarctic).

- See Internationale Studiengesellschaft zur Erforschung der Arktis mit

dem Luftschiff (Aeroarctic): Verhandlungen der I. ordentl. Versammlung in Berlin 9. bis 13. November 1926. Herausgegeben im Auftrage der Studiengesellschaft von Dr. Leonid Breitfuss.

Aerodynamics. Simple aerodynamics.

Popular Aviation, Vol. 1, Nos. 3, 4 (Oct.-Nov. 1927), Chicago, pp. 43-45, 39-40, ill.

- See Bassi, Silvio: Lezioni di aerotecnica e di costruzioni aeronautiche.

- See Bertozzi-Olmeda, F. : Alcune ricerche sull 'impiego di reti come schermi

aerodinamici.

- See Bose, N. K., und L. Prandtl: Beiträge zur Aerodynamik des Doppeldeckers.

- See Carafoli, Elie: Calcul de l'effort sustentateur et de la distribution des

pressions sur une palette en rotation uniforme. Rotor à palette.

- See Carafoli, Elie: Confrontation des théories aérodynamiques modernes

avec les lois de la mécanique rationelle.

- See Carafoli, Elie: Méthode générale pour le tracé des profile d'aviation.

- See Carafoli, Ehe: Sur le mouvement autour d'une plaque plane en

rotation.

- See Carafoli, Elie: Sur les profile aérodynamiques de forme générale.

- See DePort, Theo: Aerodynamical balance for P-1B and P-5 airplanes

by standard analytical method for determination of center of gravity and mean average chord.

Aerodynamics. See Dupont: Sur la multiplicité des solutions en aérodynamique.

- See Dupont, M.: Multiplicity of solutions in aerodynamics.

- See Dupont, P. : Calcul des forces de flottement sur les profils d'ailes.

- See Eberhardt, C: Einführung in die theoretische Aerodynamik.

- See Girault, Maurice: Construction géométrique de profils d'ailes par

représentation conforme d'un cercle.

- See Helmbold, H. B.: Die generalisierten Koordinaten der Flugmechanik.

- See Huguenard, E., A. Magnan et A. Planoil: Sur un principe nouveau

permettant la réalisation d'appareils mesurant les conditions aérodynamiques du vol des avions.

- See Lamb, H.: On the effect of the walls of an experimental tank on the

resistance of a model.

- See Lock, C. N. H.: On the system of vortices generated by a circular

cylinder in steady motion through a fluid.

- See Marshall, Dorothy: Further experiments on the relation between

skin friction and heat transmission.

- See Reif, E. F., and T. Lavender: Experiments on the flow behind a

rotating cylinder in the water channel.

- See Richardson, E. G.: Recent model experiments in aerodynamics.

-• See Roy, Maurice: A propos des nouvelles recherches publiées par le

laboratoire aérodynamique de Göttingen.

- See Teofilato, Pietro: Le pressioni aerodinamiche sopra una superficie

rigida finita.

- See Teofilato, Pietro: Sul profilo longitudinale dei tubi aerodinamici.

- See Thorn, A. : Experiments on the air forces on rotating cylinders.

- See Warner, Edward Pearson: Airplane design; aerodynamics.

- See Wiederhold, Hasso: Aerodynamische Untersuchungen an einem

zweimotorigen Verkehrsdoppeldecker.

Aerographt. See Airgraphy: Airgraphy or aerography?

Aerokartograph. See Krahmer, E. R. : Der Aerokartograph nach Hugershoff.

Aeronautic Safety Code. See Safety Code: Projets américains en vue d'un code de sécurité aérienne.

Aeronautical Research Committee. Aeronautical research in Great Britain. Nature, Vol. 120, No. 3032 (Dec. 10, 1927), London, p. 858.

- The report of the Aeronautical Research Committee for the year 1926-27.

London, H. M. Stationery Office, 1927, pp. 55.

- Reports and memoranda of the Aeronautical Research Committee published between the 1st January, 1925, and the 28th February, 1927.

Aeronautical Research Committee, Reports and Memoranda, No. 1050, Feb., 1927, London, 1927, pp. 8.

Aeronautics. A bright outlook for the advancement of aeronautics, civil and military.

U. S. Air Services, Vol. 12, No. 1 (Jan., 1927), Washington, D. G. pp. 33-34.

Aérophile. Notre trente-cinquième année.

L'Aérophile, 35e année, Nos. 1-2 (ler-15 Jan. 1927), Paris, p. 1.

Africa. Aircraft and the African.

Aeroplane, Vol. 33, No. 9 (Aug. 31, 1927), London, pp. 295, 298, ill.

- A British Africa air line.

Aeroplane, Vol. 33, No. 9 (Aug. 31, 1927), London, pp. 290-295.

- On aviation in Africa.

Aeroplano, Vol. 32, No. 17 (Apr. 27, 1927), London, pp. 457-460, ill.

- On flying in British Africa.

Aeroplane, Vol. 33, No. 9 (Aug. 31, 1927), London, pp. 285-287, 111.

- The Spanish African flight. A successful 4,400-mile journey by three

flying-boat.

Flight, Vol. 19, No. 3 (Jan. 20,1927), London, p. 36, ill., map.

- See Guilbaud, V.: L'hydravion d'un voyage à travers l'Afrique.

- See Landiech: Sur l'utilité et les possibilités d'emploi de l'avion en Afrique

Equatoriale Française.

Agriculture. Combating the weevil by plane.

Aviation, Vol. 22, No. 14 (Apr. 4,1927), New York, p. 678.

- Dusting plane development in 1926.

Aviation, Vol. 22, No. 22 (May 30, 1927), New York, p. 1174.

- See Blake, A. E. : Aerial dustmen.

Ahlborn. Die Ablösungs- oder Grenzschichttheorie Prandtls und die Entstehung der Wirbel in der Wirklichkeit.

Die Luftwacht, Heft 10, Okt. 1927, Berlin, p. 585.

Ailerons. See Koning, C, en H. J. van der Maas: Experiments on the action of the ailerons of a thick tapered wing.

- See Sabatier, J.: Researches on ailerons and especially on the test loads

to which they should be subjected.

Air cooling. See Alcock, J. F.: Air cooling. An experimental method of evaluating the cooling effect of air streams on air-cooled cylinders.

Air currents. See Lapresle, A.: Contribution a l'étude expérimentale du champ aérodynamique autour d'un profil sustenteur.

- See Suyehiro, Kyoji: A new method of photographing air current.

Air flow. See Ower, E. : The measurement of air flow.

Air King. The Air King four-passenger plane.

Aviation, Vol. 22, No. 4 (Jan. 24, 1927), New York, pp. 178-179, ill.

- The latest Air-King.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, p. 192, ill., diagr.

- The new Air-King, Model 27.

Aviation, Vol. 23, No. 11 (Sept. 12,1927), New York, p. 624, ill. Slipstream, Vol. 8, No. 9 (Sept. 1927), Dayton, Ohio, pp. 48-49, ill., diagr.

Air League Challenge Cup. The Air League Challenge Cup. Flight, Vol. 19, No. 26 (June 30,1927), London, p. 427.

Air League of the British Empire. On the Air League's possibilities. Aeroplane, Vol. 32, No. 26 (June 29, 1927), London, pp. 753-756.

Air Ministry. On the attacks on the Air Ministry.

Aeroplane, Vol. 33, No. 8 (Aug. 24, 1927), London, pp. 257-262.

Air resistance. See Radiators: Air resistance of two aeroplane radiators.

Atr Service. See Toulmin, Harry Aubrey: Air Service, American Expeditionary Force, 1918 ... with an introduction by Jacque Louis Dumesil.

Air traffic. See Turner, Cresswell: The regulation of air traffic.

- See Wronsky, Martin: Air traffic in Germany.

Aircraft Year Book. Aircraft year book 1927.

New York, Aeronautical Chamber of Commerce of America, 1927, pp. 396, ill., diagrs.

Airfoils. International trials. Report on aerofoil tests at National Physical Laboratory and Royal Aircraft Establishment.

Techn. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 90-135, diagr., tabls.

- See Ackeret, J.: Experiments on airfoils with trailing edge cut away.

- See Betz, A.: Experiments on airfoils with aileron and slot.

- See Briggs, Lyman James, and H. L. Dry den: Pressure distribution over

airfoils at high speeds.

- See Bryant, L. W., and D. H. Williams: An investigation of the flow of

air around an aerofoil of infinite span.

- See Clark, V. E.: Design your own airfoils.

- See Fage, A., and L. F. G. Simmons: An investigation of the air-flow

pattern in the wake of an aerofoil of finite span.

- See Fage, A., and L. J. Jones: On the drag of an aerofoil for two-dimensional flow.

- See Fales, E. N., and L. V. Kerber: Tests of pneumatic means for raising

airfoil lift and critical angle.

- See Glauert, H.: Aerofoil and airscrew theory.

- See Hartshorn, A. S. and H. Davies: Test of two aerofoils, R. A. F. 27

and R. A. F. 28.

- See Hegge-Zijnen, B. G. van der: Determining the velocity distribution

in the boundary layer of an airfoil fitted with a rotary cylinder.

- See Higgins, George Judson: The characteristics of the N. A. C. A. 97,

Clark Y, and N. A. C. A.-M6 airfoils with particular reference to the angle of attack.

- See Higgins, George Judson, and Eastman N. Jacobs: The effect of a flap

and ailerons on the N. A. C. A.—M6 airfoil section.

- See Prandl: Increasing the lift of an aerofoil.

- See Reid, Elliott G.: Airfoil lift with changing angle of attack.

- See Seewald, F.: Increasing lift by releasing compressed air on suction

side of airfoil.

- See Schrenk, O.: Effects of roughness of airfoils.

- See Taylor, G. I.: Note on the connection between the lift on an aerofoil

in a wind and the circulation round it.

- See Wolff, E. B., and C. Koning: Discussion of the results of the boundary-layer tests of an airfoil fitted with rotary cylinders.

Airgraphy. Airgraphy or aerography?

Science, Vol. 66, No. 1696 (July 1,1927), New York, p. 16. Airplane as a term mentioned.

Airplane. See Airgraphy: Airgraphy or aerography?

Airplane carriers. See Carriers.

Airplane races. Battle of wings for air honors.

Pop. Mech., Vol. 47 (Feb. 1927), Chicago, pp. 2S3-284, ill.

Airplanes. British passenger plane.

Scient. Amer., Vol. 136 (Feb. 1927), New York, pp. 134-135, 111.

Airports. The airport—A municipal stepchild.

Aviation, Vol. 22, No. 18 (May 2,1927), New York, pp. 912-914.

- All aboard for the twentieth-century flyer; Le Bourget, Croydon

Tempel hof.

Literary Digest, Vol. 94 (Aug. 27,1927), New York, pp. 58-62.

- Building an airport with dredges.

Scient. Amer., Vol. 137 (Sept. 1927) New York, p. 223, ill.

- 1,000 airports and intermediate fields by end of year.

U. S. Air Services, Vol. 12, No. 9 (Sept., 1927), Washington, D. C, pp. 33-34.

- See Duke, Donald G.: Airports and airways, cost, operation and maintenance.

- See Ford, G. B.: Location, size and layout of airports.

- See Hanson, Earl C.: Floating airports.

- See Hollingsworth, F. N.: An experimental airport.

- See Lane, D. R.: Recent developments of municipal airports in the west.

- See Portland: Portland's (Oregon) airport.

- See Stettin: Wettbewerb Yerwaltungs und Abfertigungsgebäude Flughafen Stettin.

Airships. Air liner building for trips across continent. Pop. Mech., Vol. 47 (June 1927), Chicago, p. 929, ill.

- Air liners to have cabins in keels; two Zeppelins authorized by Congress.

Pop. Mech., Vol. 47 (Apr. 1927), Chicago, pp. 556-558, ill.

- Airship competition.

Scient. Amer. Vol. 135 (Apr. 1927), New York, pp. 280-281.

- The all-metal airship.

Aeroplane, Vol. 33, No. 11 (Sept. 14,1927), London, p. 374.

- And now the Zeppelin.

Review of Reviews, Vol. 75 (Sept. 1927), New York, pp. 316-317, ill.

- Flying Uncle Sam's rubber gas bags.

Pop. Mech., Vol. 47 (June 1927), Chicago, pp. 905-911, ill.

- Metal-clad rigid airship development.

Journal of the Institution of Aeronautical Engineers, Vol. 1, No. 1 (Jan. 1927), London pp. 6-20.

- Model airships.

Flight, Vol. 19, Nos. 48, 51 (Dec. 1, 22, 1927), London, pp. 826, 869-870.

- Navy calls for bids on two rigid airships.

TJ. S. Air Services, VoL 12, No. 2 (Feb. 1927), Washington, D. C, pp. 15-16.

- Race for airship supremacy.

Literary Digest, Vol. 94 (Aug. 27, 1927), New York, pp. 62-66.

- Revival of the semi-rigid airship.

Flight, Vol. 19, No. 41 (Oct. 13, 1927), London, p. 724.

- Two airplanes successfully launched from a dirigible.

Scient. Amer., Vol. 136 (Feb. 1927), New York, p. 112, ill.

ArssHTPS. See Blakemore, Thomas Lloyd, and W. "Watters Pagon: Pressure airships. Part I-Nonrigid airships, by Thos. L. Blakemore. Part II—Semirigid airships, by W. Watters Pagon.

- See Burgess, Charles P.: Airship design.

- See Evans, E. E.-H.: The development and the future of the airship.

- See Evans, H. B. TVyn: Airships.

- See Grenier, P.: Un traceur de route pour aércnef: l'Autoestimographe

Mengden.

- SeeHiggins, George Judson: Tests of the N. P. L. airship models in the

variable density wind tunnel.

- See IUies, H.: Ganzmetall-Luftschiffe.

- See Karman, Th. v.: Berechnung der Druckverteilung an Luftschiffkörpern.

- See Lempertz, E.: Flüssige und gasförmige Brennstoffe im Luftschiffbetrieb.

- See Mooring: Floating mooring station for transocanic airships.

- See Parseval, A.: Ueber die heutige Luftschiffahrt.

- See Parseval, H. C. A. von: Modern airships.

- See Sandford, W. T.: Some recent developments in the design of rigid

airships.

- See Schwengler, Joh. : Das Grossluftschiff der Gegenwart und seine tatsächlichen Leistungen.

AiHSHiPS Incorporated. Le radeaux pneumatiques américains.

L'Aéronautique, Srne année, Xo. 101 (oet. 1927,, Paris, p. 311, SI

Airways. Lighthouse Bureau to care for airways.

Aero Digest, Vol. 10, Xo. 4 (Apr. 1927), Xew York, p. 322, SL

- See Commercial aeronautics: A map drawing of the United States airways as of Dec. 31, 1927.

Axiyama, Kixsei. See Tanaka, Yoshio, Yuzaburo Nagai, and Kinsei AMyama: Lower limit of inflammability of ethyl alcohol, ethyl ether, methyl cyclo-hexane and their mixtures.

Alaska. Flyers map Alaskan mountain ranges.

Pop. Mech., Vol. 47 (Feb. 1927), Chicago, pp. 220-221, ffl.

- Une grande exploration aéronautique en Alaska.

L'Aêronantiqne, 9me année, Xo. 99 (août 1927), Paris, pp. 2S9-2-Q, DL

- History of flying in Alaska.

Slipstream, Vol. S, Xo. 6 (June 1927), Dayton, Ohio, pp. 22-23, ffl.

Alatrac, A. Étude théorique du vol par battements.

BaHetin Teciiique, X. 39, Service Technique de l'Aéronautique, décembre 1926.

Albany conference. The Albany conference.

Aviation, Vol. 23, Xo. 24 (Dec. 12, 1927), New York, pp. 1406-140", ffl.

Albateos. German aircraft firm builds commercial transport plane. Aviation, Vol. 23. Xo. 19 (Xov. 7, 1927), Xew York, p. 1120, ffl.

Albexga, G. Calcoli di resistenza degli aeroplani. Annali dei Lavori Pubblici; Fase. 1, 1927.

Alclad. See Dix, jr., E. H.: "Alelad" a new corrosion resistant aluminum product.

Alcock, John. See History: Famous flights. The NC-4 trip.

Alcock, J. F. Air cooling. An experimental method of evaluating the cooling effect of air streams on air-cooled cylinders.

National Advisory Committee for Aeronautics, Technical Memorandums No. 412, May 1927, Washington, pp. 18, ill. From "The Automobile Engineer," April 1927.

Alexander. Le périple de l'Europe et la route d'Alexandre.

L'Aérophile, 35e année, Nos. 17-18 (ler-15 sept. 1927), Paris, p. 263, ill.

Alexander, J. D. Aircraft merchandizing plans of the Alexander Aircraft Co.

Annals, American Academy Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 137-140.

Alfred-Leblanc. Le prix Alfred-Leblanc.

L'Aérophile, 35e année, Nos. 9-10 (ler-15 mai 1927), Paris, pp. 136-137, ill.

All America aircraft display. All America Aircraft Display highly praised.

U. S. Air Services, Vol. 12, No. 6 (June 1927), Washington, D. C, pp. 36-41, ill.

- All America aircraft display huge success.

Slipstream, Vol. 8, No. 6 (June 1927), Dayton. Ohio, pp. 14-18, ill.

- The All-America aircraft display, Washington, D. C.

Aero Digest, Vol. 10, No. 5 (May 1927), New York, p. 400.

- American aircraft industry holds successful aircraft display.

Aviation, Vol. 22, No. 21 (May 16, 1927), New York, pp. 1031-1038, ill.

- Illustrated catalogue of the All America Aircraft Display especially assembled to commemorate the visit of the Pan-American Commercial and Aeronautical Conference.

Washington, D. C, Boiling Field, May Second to Sixth, 1927, pp. 107, ill.

Allen, C. B. The siege of Spokane. The successful 1927 National air races.

Aero Digest, Vol. 11, No. 4 (Oct. 1927), New York, pp. 380-388, ill.

Allen, Edmtjnd T. Flying through fog and night.

Aviation, Vol. 23, No. 21 (Nov. 21, 1927), New York, pp. 1234-1239, ill.

- Night flying in bad weather.

Aviation, Vol. 22, No. 10 (Mar. 7, 1927), New York, pp. 461-463.

Alloys. See Grogan, J. D.: Report on study of mechanical properties of silicon-aluminium alloys.

- See Miller, R. A.: Compressive strength of duralumin channels.

- See Tapsell, H. J.: Some mechanical tests of cast bars of Alpax.

Altitude. How high can man fly?

Pop. Mech., Vol. 48 (Nov., 1927), Chicago, pp. 778-782, ill. Literary Digest, Vol. 95 (Nov. 19,1927), New York, pp. 23-24.

- Le record d'altitude en hydravion est porté à 9300 mètres.

L'Aéronautique, 9me année, No. 96 (mai 1927), Paris, p. 137, ill.

- Records de altura en aeroplano.

Ibérica, Año 14, Núm. 700 (5 nov. 1927), Barcelona, p. 264.

- See Borck, Hermann: Luftschrauben für Höhenflugzeuge.

- See Krügner, H.: Motoren für Höhenflugzeuge.

- See Watter, Michael: Power and propulsion at altitudes.

Aluminium. Possibilité des applications de l'aluminium et de ses alliages dans la marine.

L'Aéronautique, (L'Aêrotechnique, 5eannée, No. 51),9me année, No. 94 (mars 1927), Paris, pp. 82-84.

- See Dix, jr., E. H.: "Alclad" a new corrosion resistant aluminum product.

- See Gough, H. J., D. Hanson, and S. J. Wright: The behaviour of single

crystals of aluminium under static and repeated stresses.

- See Meissner, Karl Leo: Aluminium-Gusslegierungen.

Amaldi, Ugo. See Levi-Civita, Tullio, e Ugo Amaldi: Lezioni di meccanica razionale.

Ambulance. See Siebenhüner, W. : Sanitätsflugzeuge.

America. The America flies through fog to France.

Aviation, Vol. 23, No. 2 (July 11, 1927), New York, pp. 68-70, ill.

- The "America's flight to France."

Aero Digest, Vol. II, No. 1 (July 1927), New York, pp. 7, 111, ill.

- The crew of the "America."

Aero Digest, Vol. 11, No. 1 (July 1927), New York, p. 14, ill.

- Les grands voyages aériens. Avec quatre hommes à bord, 1'" America"

traverse l'Atlantique.

L'Aéronautique, 9me année, No. 98 (juil. 1927), Paris, pp. 206-207, ill.

- Le raid transatlantique de 1'" America."

L'Aérophile, 35e année, Nos. 13-14 (ler-15 juil. 1927), Paris, pp. 195-199, ill.

American "Eagle." The American "Eagle."

Aero Digest, Vol. 10, No. 2 (Feb. 1927), New York, p. 130, ill.

—— The American Eagle commercial plane.

Aviation, Vol. 22, No. 23 (June 6, 1927), New York, p. 1240, ill.

American Eagle Aircraft Corporation. American Eagle production. Aviation, Vol. 23, No. 19 (Nov. 7, 1927), New York, pp. 1110-1111, ill.

"American Legion." The transatlantic plane "American Legion." Aero Digest, Vol. 10, No. 5 (May 1927), New York, p. 428, ill., diagr.

American Society of Mechanical Engineers. The A. S. M. E. holds two-day aeronautical meeting in Buffalo.

Aviation, Vol. 22, No. 19 (May 9, 1927), New York, p. 984, ill.

Ames, Joseph Sweetman. Doctor Ames: Chairman of the N. A. C. A. Aviation, Vol. 22, No. 18 (May 2, 1927), New York, p. 932.

Amiot. Combat and bombing airplane, Amiot 120 B 3.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 28, Washington, January, 1927, pp. 5, ill.

Amphibians. Pan-American flyers praise Amphibians.

U. S. Air Services, Vol. 12, No. 3 (Mar. 1927), Washington, D. C, pp. 19-20.

Amsterdam-Batavia. A great Anglo-Dutch achievement.

Aeroplane, Vol. 33, No. 18 (Nov. 2, 1927), London, pp. 604, 606, ill.

Amundsen, Roald Engelbregt Gravning, and Lincoln Ellsworth. First crossing of the polar sea.

New York, George H. Doran Company, 1927, pp. x, 324, ill., map.

- The first flight across the polar sea, with additional chapters by John

Höver, Hj. Riiser-Larsen, Gustav Amundsen, Finn Malmgren, B. L. Gottwaldt.

London, Hutchinson & Co., ltd., 1927, pp. 274, ill., map. 6333—28-2

Anderson, E. F., L. E. Caygill, and R. McKinnon Wood. Full-scale and model measurements of lift and drag of Bristol Fighter with R. A. F. 32 wings.

Techn. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 260-264, diagr., tabls.

Andree. See Hydravion: Over den luchtqeg naar de Noordpool.

Andrus, C. G. Airways aerological work.

Aviation, Vol. 22, No. 16 (Apr. 18, 1927), New York, pp. 778-779, ill.

Anemometers. See Eredia, F.: Un nuovo tipo di anemometro.

Annuario. Annuario ufficiale della r. aeronautica, 1927, Anno V.

Roma, Provved. gen. dello Stato, Libreria (stab, poligr. Amm. Stato), 1927, pp. xlviij, 24-ill.

Antilli, Cesare. La definizione dell'immagine nella fotografia aerea e l'analis: del terreno.

Rivista Aeronautica, Anno. 3, N. 3 (Marzo 1927), Roma, pp. 15-46, ill.

- Metodo d'analisi degli otturatori focali per fotografia aerea.

Rendiconti Technici della Direzione Generale del Genio Aeronautico, Anno 15, N. 1 (Aprile 1927), Roma, pp. 1-9, ill., diagrs.

Anzani. The Anzani sport motors.

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, pp. 550-552, ill.

- See Lubrication: Hints on lubrication of Anzani engines.

Apprentices. See Breese, C. D.: The training of aircraft apprentices.

Arado. Training airplane "Arado SC 1."

National Advisory Committee for Aeronautics, Aircraft Circulars No. 56, Washington, September 1927, pp. 7, ill. From " Flugwoche," June 22,1927.

Archbutt, Leonard, and R. Motjntford Deeley. Lubrication and lubricants: A treatise on the theory and practice of lubrication, and on the nature, properties, and testing of lubricants. Fifth edition. London, Charles Griffin and Co., Ltd., 1927, pp. xxxii, 650.

Arctic. See Scheve, G. v.: Die Internationale Studiengesellschaft zur Erforschung der Arktis mit dem Luftschiff, E. V.

Arens. The Arens control.

Aviation, Vol. 23, No. 21 (Nov. 21, 1927), New York, pp. 1242-1243, diagr.

Armstrong. Armstrong Siddeley 65 H. P. Genet engine.

Aero Digest, Vol. 10, No. 3 (Mar. 1927), New York, p. 232, ill.

Armstrong, E. R. Seadromes and ocean flying.

Aviation, Vol. 23, No. 22 (Nov. 28, 1927), New York, pp. 1288-1290, ill.

Army Air Corps. See Gillmore, William E.: Review of year's developments in the Army Air Corps.

Army air service. Flying cadet requirements.

Popular Aviation, Vol. 1, No. 4 (Nov. 1927), Chicago, pp. 34-36, ill.

Arnold, Henry H. Airmen and aircraft.

New York, Ronald Press Co., 1927, pp. 216, ill.

- Hoboes of the air.

Popular Aviation, Vol. 1, No. 3 (Oct. 1927), Chicago, pp. 16-18, 111.

- Winter flying.

Popular Aviation, Vol. 1, No. 1 (Dec. 1927), Chicago, pp. 13-15, ill.

Arnold, M. B. The international date line.

Ü. S. Air Services, Vol. 12, No. 11 (Nov. 1927), Washington, D. C, pp. 26-27, diagr.

Arthur, W. E. Airports and landing fields.

Annals, American Academy of Political and Social Science, Vol. 131 (May, 1927), Philadelphia, pp. 56-57, ill., diagrs., map.

Aston, George. The study of war for statesmen and citizens. London, Longmans, 1927, pp. viii, 205.

Atalanta. Comparison of Atalanta and model sea worthiness and fore and aft angle.

Aeronautical Research Committee, Reports and Memoranda No. 1076, July, 1925, London, 1927, pp. 9, tabls., ill., diagr.

Atlantic Ocean. Les deux océans. L'Atlantic. Le Pacifique.

L'Aérophile, 35e année, Nos. 17-18 (ler-15 sept. 1927), Paris, pp. 258-262, ill.

- Les grands raids transatlantiques.

L'Aérophile, 35e année, Nos. 5-6 (ler-15 mars 1927), Paris, pp. 78-80, port., map.

- Louis Blériot et la traversée commerciale de l'Atlantique.

L'Aéronautique, 9me année, No. 99 (août 1927), Paris, p. 248, ill.

- La question de l'Atlantique.

L'Aérophile, 35e année, Nos. 15-16 (ler-15 août 1927), Paris, pp. 233-234.

- See America: Les grands voyages aériens. Avec quatre hommes à bord,

I' "America" traverse l'Atlantique.

- See Bouché, Henri: La crise française et la traversée de l'Atlantique.

- See Bouché, Henri: Les traversées de l'Atlantique Sud.

- See Byrd, Richard Evelyn: Byrd's trans-Atlantic trip.

- See Byrd, Richard Evelyn : Our trans-Atlantic flight.

- See De Pinedo, Francesco: La crociera aerea dell'Atlántico.

- See Franck, P., et V. Chalamand: La traversée aérienne de l'Atlantique

Nord.

- See Georgii, W. : Die meteorologischen Grundlagen des transatlantischen

Luftverkehrs.

- See Gregg, Willis Ray: Meteorology of the North Atlantic and trans-Atlantic flight.

- See Hovgaard, W. : An airplane station in mid-Atlantic.

- See Hydravion: Over den Atlantischen Oceaan.

- See Italy: Le circuit italien de l'Atlantique. Le colonel De Pinedo, sur

Savoia S-55, réussit la troisième traversée de l'Atlantique Sud.

- See Lepère, G.: L'aspect technique de l'exploit de Lindbergh.

- See Lindbergh, Gage: "Plucky" Lindbergh; incidents in the life of Colonel

Charles Lindbergh and brief biography, log of the trans-Atlantic trip and receptions, recording of all important facts.

- See Llave, Joaquin de la: Más vuelos transatlánticos.

- See Mitchell, William: What trans-Atlantic flights augur for the future.

- See Steude, Erich: Leistungs-Berechnungen von Verkehrsluftschiffen

für transatlantische Luftverkehrslinien.

Atlas. The Atlas valveless 120 h. p. aircraft motor.

Aero Digest, Vol. 11, No. 3 (Sept. 1927), New York, p. 306, Ui.

Atomization. See Sauter, J.: Determining the efficiency of atomization by its fineness and uniformity.

Australia. Aviation in Australia.

Flight, Vol. 19, No. 9 (Mar. 3, 1927), London, pp. 118-119, ill.

- Civil aviation in Australia.

Aeroplane, Vol. 32, No. 15 (Apr. 13,1927), London, pp. 389-396,405, ill., map.

- On Australian aviation.

Aeroplane, Vol. 32, No. 15 (Apr. 13, 1927), London, pp. 377-383, ill.

- Private flying in Australia.

Flight, Vol. 19, No. 18 (May 5,1927), London, p. 278.

- An unsubsidised air service in Australia.

Flight, Vol. 19, No. 6 (Feb. 10, 1927), London, p. 71.

- See Cobham, Alan John : Australia and back.

Autoestimographe. See Grenier, P.: Un traceur de route pour aéronef•* l'Autoestimographe Mengden.

Autogiro. See Cierva, Juan de la: Essai des nouveaux autogires.

- See Glauert, H.: The theory of the autogiro.

- See Seiferth, R.: Testing a windmill airplane ("Autogiro").

Autorotation. See Knight, Montgomery: Wind tunnel tests on autorotation and the "Flat Spin".

Avia. La technique des avions tchécoslovaques "Avia".

L'Aéronautique, 9me année, No. 103 (dec. 1927), Paris, pp. 404-405, ill.

- Training airplane "Avia B. H. 11".

National Advisory Committee for Aeronautics, Aircraft Corculars No. 40, Washington, May 1927, pp. 4, ill.

Aviamotor. Die Flugzeugkammer "Aviamotor."

Die Luftwacht, Heft 10, Okt. 1927, Berlin, pp. 574-575, ill.

Aviation. Aviation: the season's record.

Review of Reviews, Vol. 76 (Oct. 1927), New York, p. 380.

- Is aviation worth while?

World's Work, Vol. 54 (July 1927), New York, pp. 233-234.

- Die eroberung der luft.

Stuttgart, Union Deutsche Veriagsgeaellschaft, 1927, pp. 432, HI.

- Jeremiah who calls aviation the great delusion.

Literary Digest, Vol. 94 (Sept. 24,1927) New York, pp. 62-68.

- Scientific aids to aviation.

Scient. Month., Vol. 25 (July 1927), Garrison, N. Y., pp. 89-91.

- Triumphs and tragedies of aviation.

Literary Digest, Vol. 94 (Sept. 24,1927), New York, pp. 14-15.

- What aviation needs.

World's Work, Vol. 54 (Aug. 1927), New York, pp. 353-355.

Aviators. Altitude tests for aviators.

Scient. Amer., Vol. 136 (July 1927), New York, p. 418, ill.

- Clouds.

Atlantic Monthly, Vol. 139 (Apr. 1927), Boston, pp. 569-570.

- Psychology applied to the air service.

Science, n. s., Vol. 65 (Feb. 18, 1927), Garrison, N. Y., sup. 10.

Avigation. See Byrd, Richard Evelyn: Avigation.

- See Huntington, Hubert S. : Avigation.

Avimeta. "Avimeta" three-engine commercial monoplane, type A. V. M. 132.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 63, Washington, December 1927, pp. 5, ill.

- The Avimeta type 132 transport.

Aero Digest, Vol. 11, No. 6 (Dec. 1927), New York, pp. 696, 698, ill., diagr.

- Het Avimeta verkeersvliegtuig type A V M 132.

Het Vliegveld, llde Jaarg., No. 11 (Nov. 1927), Amsterdam, pp. 374-376, ill.

- First French all-metal commercial aeroplane. The "Avimeta" A. V. M.

132.

Flight, Vol. 19, No. 46 (Nov. 17, 1927), London, pp. 793-795, 111., diagr.

- Le monoplan Avimeta 132 à trois moteurs Salmson 230 HP.

L'Aéronautiquc, 9me année, No. 101 (oct. 1927), Paris, pp. 324-325, ill.

Avorio. Los globos de deformación elàstica "Avorio".

Iberica, Afio 14, Num. 661 (15 enero 1927), Barcelona, pp. 36-38, ill.

Avrò. The Avrò "Gosport," 504 R. A new training airplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 49, Washington, July 1927, pp. 5, ill. From "Flight," April 15, 1926.

Avro-Hinkler. The Avro-Hinkler undercarriage.

Aeroplane, Vol. 33, No. 4 (July 27, 1927), London, p. 136, ill.

B

B. S. R. 1. A new British semi-rigid airship. B. S. R. 1 of one million cubic feet capacity.

Flight, Vol. 19, No. 46 (Nov. 17, 1927), London, pp. 790-792, ill., diagr.

Bach. The Bach air yacht.

Aero Digest, Vol. 11, No. 3 (Sept. 1927), New York, p. 302, ill.

- The Bach C-S-l cabin plane.

Aviation, Vol. 22, No. 22 (May 30, 1927), New York, pp. 1135, ill.

Backer. De postvlucht Soerabaja-Sabang v. v.

Het Vliegveld, llde Jaarg., No. 5 (Mei 1927), Amsterdam, pp. 161-163, ill.

Bailey, A. See Simmons, L. F. G., and A. Bailey: Note on a hot-wire speed and direction meter.

Bailey, N. R. Progress report on the study of torsion on wing framework.

Air Corps Information Circular, Vol. 6, No. 584 (Mar. 1, 1927), Washington, pp. 49, diagr., tables.

- See Niles, A. S., and N. R. Bailey: Study of pressure distribution data.

Baker, J. F. Secondary stresses in airship hull structures.

Journ. Roy. Aer. Soc, Vol. 31, No. 204 (Dec. 1927), London, pp. 1073-1109, diagr., tabls.

Balbo, Italo. La politica aeronautica dell'Italia Facista. Discorso sul bilcanio dell'Aeronautica pronunciato alla Camera dei Deputati nella tornata del 29 marzo 1927.

Roma, Tipografia della Camera dei Deputati, 1927—Anno V.

- Il programma dell'aviazione Italiana nel discorso di S. E. Balbo.

L'Ala d'Italia, Anno 6, N. 4 (5 Aprile 1927), Milano, pp. 119-124, ports.

Balchen. See America: Les grands voyages aériens. Avec quatre hommes à, bord, V "America" l'Atlanti que.

Baldini, Mario. Carta aeronautica d'Italia.

Rivista Aeronautica, Anno 3, N. 4 (Aprile 1927), Roma, pp. 31-43, ill.

Bale. Développement de l'aéroport de Bale.

L'Aéronautique, (L'Aéronautique marchande, 6me année, No. 69), 9me année, No. 100 (sept. 1927), Paris, pp. 295-297, ill.

Ball, Guy. Parachutes.

Slipstream, Vol. 8, Nos. 8-10 (Aug.-Oct. 1927), Dayton, Ohio, pp. 11-13; 10-11,43; 10-11, 37, ill.

Ballon-Sonde. See Eredia, Filippo: Sui dispositivi e sui sistemi adottati nei lanci di palloni sonda.

BALLooN-jumper. Seven-league boots of the balloon jumper. Pop. Mech., Vol. 47 (May 1927), Chicago, pp. 716-717, ill.

- The "Seven-league Boots" of the balloon-jumper. A remarkable new

sport coming here from America.

Illustrated London News, Vol. 170, No. 4581 (Feb. 5, 1927), London, pp. 210-211, ill.

- Small balloons provide good sport.

Scient. Amer., Vol. 137 (July 1927), New York, p. 39, ill.

Balloons. See Dollfus, Charles: La sécurité en ballon libre.

- See Ducout, Marcel: Le rallye ballons féminin et le concours d'atterrissage

de l'Aéro-Club.

- See Graffigny, Henry de: La stabilisation des aérostats par procédé

thermique.

- See Maxson, Herbut W.: The National Balloon Race.

- See Possner, Lothar: Das Ubersteigen der Normalhöhe eines Freiballons.

- See Records: Un ballon porte le record du monde d'altitude à 12944

mètres.

- See Rozendaal, John: Berlijnsche brief. ["Bartsch von Sigsfeld"].

- See Schrenk, Martin: Der neue Höhenforschungs-Freiballon Bartsch von

Sigsfeld.

Baranoff, A. von. Die Ermittlung des günstigsten Querschnitts eines auf Biegung beanspruchten Kastenholms.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 4. Heft (28. Feb. 1927), München, pp. 81-83, ill., diagrs.

- Rechnungen über den Eintritt des Trudeins.

Die Luftwacht, Heft 10, Okt. 1927, Berlin, p. 586.

- See Fuchs, R., und A. v. Baranoff: Zur Theorie der Seitenbewegung des

Flugzeugs.

Barber, Horatio. The aeroplane speaks, with an introduction by Professor Alexander Klemin.

New York, R. M. McBride & Company, 1927, pp. 148, ill., diagrs.

Barclay, J. F. St. B. The chemistry of flight.

Airways, Vol. 3, No. 11 (July 1927), London, pp. 365-366, ill.

Barner, James B. Lieut. Barner establishes seaplane record.

Aviation, Vol. 22, No. 21 (May 16,1927), New York, p. 1045.

Barnwell, F. S. Some notes on the design of airscrews.

Journal of the Institution of Aeronautical Engineers, Vol. 1, No. 5 (May 1927), London, pp. 56-83, 111.

Barometric charts. See Silvester, Norman L. : The use of barometric charts in the navigation of airships.

Bare, Guy. The air bubble viscometer.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 975-984.

- Experiments relating to the electrification of balloon fabrics.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 936-945.

Barr, Guy, and Isabel H. Hadfield. Some physio-chemical studies on the effect of sunlight on cotton.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 914-935, tabls.

Bartsch von Sigsfeld. See Rozendaal, John: Berlijnsche brief. ["Bartsch von Sigsfeld"].

- See Rozendaal, John: Berlijnsche brief de eerste opstijgung van den

Luchtbol "Bartsch von Sigsfeld."

- See Schrenk, Martin: Der neue Höhenforschungs-Freiballon Bartsch von

Sigsfeld.

Bartz, Werner. Deutsche luftrechtspolitik seit Versailles.

Berlin, F. Dümmler, 1927, pp. 49. Völkerrechtsfragen; eine Sammlung von vortragen und Studien ... 19. hft. Die Luftwacht, Heft 7, Juli 1927, Berlin, pp. 388-393.

Bassi, Silvio. Lezioni di aerotecnica e di costruzioni aeronautiche. Vol. I. Milano, Libreria Editrice Politecnica, 1927, pp. 243, ill.

Batavia. See Hydravion: De retour-vlucht Amsterdam-Batavia door de K. L. M.—vliegers Geysendorffer en Schölte.

Bateman, H. See Lock, C. N. H., H. Bateman, and H. C. H. Townend: An extension of the vortex theory of airscrews with applications to airscrews of small pitch, including experimental results.

Batson, A. S., A. S. Halliday, and A. L. Maidens. The distribution of pressure over a monoplane and a biplane with wings of unequal chord and equal span.

Aeronautical Research Committee, Reports and Memoranda, No. 1098 (Ae. 277), Feb. 1927, London, 1927, pp. 28, tabls., diagr.

Batson, A. S., D. H. Williams, and A. S. Halliday. Experiments on a model of a Fokker (F. VII) monoplane wing.

Aeronautical Research Committee, Reports and Memoranda, No. 1059 (Ae. 241), Sept. 1926, London, 1927, pp. 21, tabls., diagr.

Batson, A. S. See Irving, H. B., and A. S. Batson: The distribution of pressure over a biplane with wings of unequal chord and span.

- See Irving, H. B., and A. S. Batson: The effects of stagger and gap on the

aerodynamic properties of biplanes at large angles of incidence.

- See Irving, H. B., A. S. Batson, and D. H. Williams: Model experiments

on R. A. F. 31 aerofoil with Handley Page slot.

- See Irving, H. B., and A. S. Batson: Some experiments on a model of a

B. A. T. "Bantam" aeroplane, with special reference to spinning accidents. Part I. Longitudinal control and rolling experiments.

Battleship. Keen competition in "Battleship Fighter" class.

-U. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. C, pp. 29-30, ill.

Baumgarth, Erwin. Flying for sport.

Popular Aviation, Vol. 1, No. 2 (Sept. 1927), Chicago, pp. 16-17, ill.

Baumhauer, A. G. von. The resistance of aeroplane wheels.

Verslagen en Verhandelingen van den Rijks-Studiedienst voor de Luchtvaart, Rapport A. 153, Deel 4-1927, Amsterdam, pp. 267-276, ill.

Beacons. B. B. T. Corp. develops new beacon.

Aviation, Vol. 23, No. 3 (July 18,1927), New York, p. 158, ill.

- General Electric Co. holds demonstration of modern aviation beacon

lights.

Aviation, Vol. 22, No. 25 (June 20, 1927), New York, pp. 1376-1378, ill.

- See Dantin, C. : Les phares à très longue portée.

- See Radiobeacons.

Beal, R. B. Spartanburg takes a flyer in airport finance. American City, Vol. 37 (Oct. 1927), New York, p. 37, ill.

Beamish, Richard Joseph. The story of Lindbergh, the lone eagle, including the development of aviation, epoch-making flights of the world's greatest airmen, and the history of the efforts to bridge the distance between the old and the new worlds.

Philadelphia, The International Press, 1927, pp. 320, ill., maps.

Bear, Raymond M. Differential pressures on a pitot-venturi and a pitot-static nozzle over 360° pitch and yaw.

National Advisory Committee for Aeronautics, Report No. 264, July 18, 1927, Washington, Government Printing Office, 1927, pp. 9, ill., diagrs., tables.

Beardmore. The Beardmore Typhoon Mark I engine.

Aviation, Vol. 22, No. 10 (Mar. 7, 1927), New York, p. 471, ill. Flight, Vol. 19, No. 4 (Jan. 27,1927), London, pp. 44-45, ill.

—■— The first British inverted engine. Typhoon.

Aeroplane, Vol. 32, No. 4 (Jan. 26, 1927), London, pp. 100-102, ill.

- Le moteur Beardmore "Typhoon."

L'Aéronautique, (L'Aërotechnique, 5e année, No. 51), 9me année, No. 94 (mars 1927), Paris, pp. 78-79, ill.

Beardsley, Edward G. The N. A. C. A. photographic apparatus for studying fuel sprays from oil engine injection valves and test results from several researches.

National Advisory Committee for Aeronautics, Report No. 274, January 1927, Washington, Government Printing Office, 1927, pp. 14, ill., diagrs.

- Some factors affecting the reproducibility of penetration and the cut-off

of oil sprays for fuel injection engines.

National Advisory Committee for Aeronautics, Report No. 258, May 2, 1927, Washington, Government Printing Office, 1927, pp. 10, ill., diagrs.

- See Joachim, W. F., and Edward G. Beardsley: The effect of fuel and

cylinder gas densities on the characteristics of fuel sprays for oil engines.

- See Joachim, W. F., and E. G. Beardsley: Factors in the design of centrifugal type injection valves for oil engines.

Beatty, Lee M. Wright Whirlwind engine production.

Aviation, Vol. 23, No. 13 (Sept. 26, 1927) New York, pp. 727-732, 767, ill.

- The Wright Whirlwind engine production methods.

Journ. Soc. Automotive Engineers, Vol. 21, No. 4 (Oct. 1927), New York, pp. 361-369, ill.

Beck, Waldemar. Luftpolitische Monatsschau.

Die Luftwacht, Heft 4, 8,11, April, Aug. Nov. 1927, Berlin, pp. 210-213, 467-470, 632-635,

Bedford. The Duchess of Bedford's tour.

Flight, Vol. 19, No. 20 (May 19, 1927), London, pp. 313-314, ill., map.

Behmluptlot. Die Sicherung des Fliegens und der Landung durch das Behm-luftlot.

Die Luftwacht, Heft 4, April 1927, Berlin, pp. 217-222, ill.

Behncke, David L. The cabin plane.

Aviation, Vol. 22, No. 18 (May 2,1927), New York, p. 906.

Belgian Congo. Les transports aériens réguliers au Congo belge.

L'Aéronautique, 9me année, No. 95 (avril 1927), Paris, pp. 101-103, ill., maps.

Belgium. The Belgian VI International competition for light aeroplanes to be held at Brussels in the spring of 1927.

Flight, Vol. 19, No. 14 (Apr. 7, 1927), London, p. 207.

Bellanca. The Bellanca monoplane.—Holder of the world endurance record. Aviation, Vol. 22, No. 18 (May 2,1927), New York, pp. 908-910, 111.

- Bellanca plane arrives at German capital.

Aviation, Vol. 22, No. 25 (June 20, 1927), New York, pp. 1360-1361, ill.

- The Bellanca six-seater cabin monoplane.

Aero Digest, Vol. 10, No. 5 (May, 1927), New York, pp. 422, 424, ill., diagr.

Bellanca, G. Bellanca's transatlantic preparations.

Scient. Amer., Vol. 137 (July 1927), New York, pp. 72-73, ill., diagr.

Bellanca, Giuseppe M. Giuseppe M. Bellanca has been designing successful airplanes since 1908.

Aviation, Vol. 22, No. 26 (June 27,1927), New York, pp. 1434-1435, 1448, ill.

- Transoceanic flying.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, p. 46, ill.

- See Chamberlin, Clarence D.: Chamberlins Bellanca-Eindecker.

- See Columbia: The second great hop.

- See Pistolesi, Enrico: Lindberg, Bellanca, Chamberlain, De Pinedo.

- See Records: Het nieuwe duurrecord.

Beltrami, Gian Mario. L'aviazione nella manovra strategica e tattica degli eserciti Italiano e tedesco.

Rivista Aeronautica, Anno 3, No. 8 (Agosto 1927), Roma, pp. 45-77.

- Indipendenza ed autonomia delle forze armate.

Rivista Aeronautica, Anno 3, N. 2 (Feb. 1927), Roma, pp. 23-39.

Reviewed by Kürschner, A.; Das Problem der Luftorganisationen in den Fremdstaaten, Die Luftwacht, Heft 10, Okt. 1927, pp. 544-549.

- La transvolata Atlantica di De Pinedo.

Revista Aeronautica, Anno 3, N. 2 (Feb. 1927), Roma, pp. 5-39, ill.

Bendix. The Bendix wheel and brake.

Aviation, Vol. 23, No. 22 (Nov. 28, 1927), New York, pp. 1286-1287, ill.

Bengough. See Duralumin: Le procédé Bengough pour la protection des surfaces en duralumin.

Berlin. Internationale Luftfahrt ausstellung Berlin 1928.

Forschungen und Fortschritte, 3. Jahrg., Nr. 35, 36 (10 Dez. 1927), Berlin, p. 283.

- See Krupp, G.: "Internationale Luftfahrt-Ausstellung Berlin 1928"

(IIa 1928).

Bermuda. Bermuda safety flight contest.

Aero Digest, Vol. 11, No. 3 (Sept. 1927), New York, p. 276, map.

Bernard-Hubert. Le monoplan Bernard-Hubert de transport monomoteur Jupiter 420 HP.

L'Aéronautique, 9me année,'No. lOlKoct. 1927), Paris, p. 323, ill.

Bernardi, Enrico. See Capetti, Antonio: Enrico Bernardi. Berreur, A. Un moteur à explosion de l'avenir.

L'Aérophile, 35e année, Nos. 1-2 (ler-15 jan. 1927), Paris, pp. 14-16, ill., diagr.

Bertozki-Olmeda, F., and Mario Bernasconi. L'aerobus Junkers G. 31. Revista Aeronautica, Anno 3, N. 10 (Ott. 1927), Roma, pp. 36-75, ill.

Bertozzi-Olmeda, F. Alcune ricerche sull'impiego di reti come schermi aerodinamici.

Rendiconti Technici della Direzione Generale del Genio Aeronautico, Anno 15, N. 1 (Aprile 1927), Roma, pp. 11-26, ill., diagrs, tables.

Besanqon, Georges. L'année aéronautique 1926. Rapport présente à l'assemblée generale de l'Aéro-Club de France, par M. Georges Besancon.

L'Aérophile, 35e année, Nos. 7-8 (ler-15 avril 1927), Paris, pp. 119-122, ill.

Betz. See Weidinger, Hanns: Drag measurements on a Junkers wing section. Application of the Betz method to the results of comparative tests made on model and on an airplane in flight.

Betz, A. Experiments on airfoils with aileron and slot.

National Advisory Committee for Aeronautics, Technical Memorandums No. 437, November 1927, Washington, pp. 6, ill., diagrs., tables. From Report III "Ergebnisse der Aerodynamischen Versuchanstalt zu Göttingen."

- See Prandtl, L., und A. Betz: Ergebnisse der Aerodynamischen Versuchsanstalt zu Göttingen (angegliedert dem Kaiser Wilhelm-Institut für Strömungsforschung). III. Lieferung.

Bickel, Karl A. See Van Every, Dale, and Morris De Haven Tracy: Charles Lindbergh, his life; introduction by Karl A. Bickel.

Biddlecombe, C. H. Some scientific aspects of Commander Byrd's trans-Atlantic flight.

Outlook, Vol. 146 (July 27, 1927), New York, pp. 406-407, ill.

Bielefeld, F. Ernst. Recent suggestions in diesel-engine construction.

National Advisory Committee for Aeronautics, Technical Memorandums No. 425, August 1927, Washington, pp. 25, ill. From "Schiffbau," June 2, June 16, and July 7, 1926.

Bienen, Theodor. Calculating thrust distribution and efficiency of air propellers.

National Advisory Committee for Aeronautics, Technical Memorandums No. 444, December 1927, Washington, pp. 10, ill. From "Zeitschrift für Flugtechnik und Motorluftschiffahrt" November 27, 1926.

Biezeno, C. B., J. J. Koch, en C. Koning. The influence of the ribs on the strength of the main plane spars.

Verslagen en Verhandelingen van den Rijks-Studiedienst voor de Luchtvaart, Rapport V 175, Deel 4 -1927, Amsterdam, pp. 99-137, ill., diagrs.

Bilancioni, Guglielmo. Le leggi del volo negli uccelli secondo Leonardo.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Voi. 7, N. 1 (Gen. 1927), Pisa, pp. 3-31, ill.

Bingham, Hiram. It might be well for the critics to know.

U. S. Air Services, Vol. 12, No. 3 (Mar. 1927), Washington, D. C, p. 37.

- Man's greatest victory over nature.

U. S. Air Services, Vol. 12, No. 1 (Jan. 1927), Washington, D. C, pp. 19-20, ill.

Bird flight. See Walker, Gilbert T.: The flapping flight of birds. II. Birmingham. The Birmingham air pageant.

Flight, Vol. 19, No. 29 (July 21, 1927), London, pp. 492-497, ill.

- On the Birmingham air pageant.

Aeroplane, Vol. 33, No. 3 (July 20,1927), London, pp. 89-92, ill.

Black, Archibald. American air transport.

Annals, American Academy Political and Social Science, Vol. 131 (May 1927) Philadelphia, pp. 68-70.

- Factors which should determine the size, layout and control of airports;

reply to G. B. Ford.

American City, Vol. 37 (Oct. 1927), New York, p. 520.

- Quantity production of Fairchild pontoons.

Aviation, Vol. 23, No. 10 (Sept. 5, 1927), New York, pp. 526-529, ill.

Black, Van Lear. Amsterdam-Batavia and back in 27 days. Some details of Mr. Van Lear Black's flight.

Flight, Vol. 19, No. 32 (Aug. 11, 1927), London, pp. 564-565, ill.

- Van Lear Black's air journeys.

Aviation, Vol. 23, No. 5 (Aug 1,1927), New York, pp. 246-247, ill.

- De vluchten van Mr. Van Lear Black met de K. L. M.

Het Vliegveld, 11 de Jaarg., No. 10 (Oct. 1927), Amsterdam, pp. 357-358.

Blackburn. The Blackburn Bluebird.

Aeroplane, Vol. 32, No. 11 (Mar. 16,1927), London, pp. 282-284, ill.

- The Blackburn Bluebird, Mark II.

Aeroplane, Vol. 33, No. 19 (Nov. 9,1927), London, pp. 650-354, ill., diagr. Flight, Vol. 19, No. 48 (Dec. 1, 1927), London, pp. 823-824, ill.

- The Blackburn "Bluebird". Two-seat training and sport airplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 45, Washington, June 1927, pp. 6, ill.

- The Blackburn "Iris II".

Flight, Vol. 19, No. 50 (Dec. 15, 1927), London, pp. 847-848, ill.

- The long-range flying-boat. "Iris I".

Flight, Vol. 19, No. 49 (Dec. 8,1927), London, pp. 833-836, ill.

Blake, A. E. Aerial dustmen.

Airways, Vol. 3, No. 5 (Jan. 1927), London, pp. 145-146, ill.

- Railways, motorways, and airways. A Peruvian experiment in transport

co-operation.

Aero Field, Vol. 2, No. 5 (Aug.-Sept. 1927), Sutton Coldfield, England, pp. 101-102, map.

Blakemore, Thomas Lloyd, and W. Watters Pagon. Pressure airships. Part I—Nonrigid airships, by Thos. L. Blakemore. Part II—Semirigid airships, by W. Watters Pagon.

New York, The Ronald Press Company, 1927, pp. xiii, 311, ill.

Blanchet, Georges. Aviateurs contemporains. André Mélin.

L'Aérophile, 35e année, Nos. 23-24 (ler-15 déc. 1927), Paris, pp. 354, 363, port.

- Aviateurs contemporains. François Villiers.

L'Aérophile, 35e année, Nos. 5-6 (ler-15 mars 1927), Paris, pp. 65-66, port.

- Aviateurs contemporains. Le lieutenant Challe et le capitaine Weiser.

L'Aérophile, 35e année, Nos. 3-4 (ler-15 fév. 1927), Paris, pp. 33-34, ports.

- Aviateurs contemporains. Marcel Leyat.

L'Aérophile, 35e année, Nos. 9-10 (ler-15 mai 1927), Paris, p. 130, port.

- Aviateurs contemporains. Quelques pilotes de la ligne Latécoère: Casablanca-Dakar.

L'Aérophile, 35e année, Nos. 7-8 (ler-15 avril 1927), Paris, p. 98, ports.

- Georges Blanchet aux États-Unis.

L'Aérophile, 35e année, Nos. 21-22 (ler-15 nov. 1927), Paris, pp. 329-331, ports.

- Louis Demougeot.

L'Aérophile, 35e année, Nos. 13-14 (ler-15 juil. 1927), Paris, p. 194, port.

Blanchet, Georges. Ma traversée des Pyrénées.

L'Aérophile, 35e année, Nos. 9-10 (ler-15 mai 1927), Paris, p. 137.

Bleeker, E. Das Fliegerbuch.

Stuttgart, Union Deutsche Verlagsgesellschaft.

Blenk, Hermann. Startformeln für Landflugzeuge.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 2. Heft (28. Jan. 1927), München, pp. 25-32, ill., diagrs.

- Zur Ausschreibung für den Sachsenflug 1927.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 6. Heft (28. März 1927), München, pp. 134-143., ill.

Blé riot, Louis, et Charles Augustus Lindbergh. De Blériot à Lindbergh. L'Aéronautique, 9me année, No. 97 (juin 1927), Paris, p. 161, ill.

- See Atlantic: Louis Blériot et la traversée commerciale de l'Atlantique.

Blériot, Louis. See English Channel: Famous flights of history. The first Channel air crossing.

Bltth, J. D. Airscrew characteristics and aeroplane performance.

Journal of the Institution of Aeronautical Engineers, Vol. 1, No. 4 (April 1927), London, pp. 30-37.

- The reduction of flight test data to standard atmosphere conditions.

Flight, Vol. 19, No. 43 (Oct. 27, 1927), London, pp. 750b-750d.

Boats. See Airships Incorporated: Les radeaux pneumatiques américains.

- See Mouette: Les embarcations pneumatiques "Les Mouettes".

Böhm, Alois Robert. Militärische Betrachtungen zum Alpenflugwettbewerb. Die Luftwacht, Heft 10, Okt. 1927, Berlin, pp. 559-562, map.

- XXII. Konferenz der Fédération Aéronautique Internationale in Zurich.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 18. Heft (28. Sept. 1927), München, pp. 417-418.

Boeing. Boeing Airplane Company.

Aero Digest, Vol. 10, No. 3 (Mar. 1927), New York, pp. 196-197, ill.

- Boeing brings out last word in mail passenger job. "Wasp."

Slipstream, Vol. 8, No. 8 (Aug. 1927), Dayton, Ohio, pp. 15-16, ill.

--Boeing Company awarded air mail contract Chicago to San Francisco.

U. S. Air Services, Vol. 12, No. 3 (Mar. 1927), Washington, D. C, p. 30.

- The Boeing mail airplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 52, Washington, August 1927, pp. 4, ill.

- The Boeing mail and passenger plane.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, p. 62, 111.

- The Boeing mail plane.

Aviation, Vol. 23, No. 1 (July 4, 1927), New York, pp. 18-19, Ü1.

- The Boeing shipboard fighter.

Aviation, Vol. 23, No. 18 (Oct. 31, 1927), New York, pp. 1058-1059, ill.

- The Boeing 3-engined twelve passenger commercial plane.

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, pp. 554, 556.

- See Mead, George J.: Journeying with the Boeing air mail.

Boelcke, S. Stato ed avvenire della fotogrammetria del terreno.

L'Aerotecnica, Giornale ed Atti dell'Associazione Italiana di Aerotecnica. Vol. 7, N. 3 (Marzo 1927), Pisa, pp. 151-152.

Bölling Field. The Aircraft display at Boiling Field.

Aviation, Vol.3 2, No. 22 (May 30, 1927), New York, pp. 1177-1179, ill.

Bonnet. Bird-like design features Bonney "Seagull."

Aviation, Vol. 22, No. 24 (June 13, 1927), New York, pp. 1290-1291, ill.

- Bonney's Gull.

Scient. Amer., Vol. 137 (Dec. 1927), New York, pp. 539-540, ill.

- Leonard W. The "Bonney Gull."

Illustrated London News, Vol. 170, No. 4591 (April 16, 1927), London, p. 689, ill.

Boone, Andrew R. Five years of progress. An interview with B. F. Mahoney. Aviation, Vol. 23, No. 20 (Nov. 14, 1927), New York, pp. 1160-1163, ill.

- Radio beacons to guide Hawaiian fliers.

Aviation, Vol. 23, No. 1 (July 4, 1927), New York, pp. 6-7, ill.

Boothby, F. L. M. The problem of the safety fuel tank.

Aircraft Engineer, suppl. to Flight, Vol. 19, No. 4 (Jan. 27, 1927), London, p. 46g.

- The recent eclipse as seen from a balloon.

Aviation, Vol. 23, No. 5 (Aug. 1, 1927), New York, pp. 248-250, ill.

Borck, Hermann. Die Auswertung der Luftschraubenprüfung am Prüfstand.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 17. Heft (14. Sept. 1927), München, pp. 405-407, diagrs.

- Luftschrauben für Höhenflugzeuge.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 4. Heft (28. Feb. 1927), München, pp. 83-93, ill.

Böse, N. K., und L Prandtl. Beiträge zur Aerodynamik des Doppeldeckers.

Zeitschrift für angewamdte Mathematik und Mechanik, 7. Jahrg., Nr. 1 (Feb. 1927), Berlin, pp. 1-9, ill.

Bouché, Henri. De Blériot à Lindbergh.

L'Aêronatique, 9me année, No. 97 (juin 1927), Paris, p. 161, ports.

- La crise française et la traversée de l'Atlantique.

L'Aéronautique, 9me année, No. 98 (juil. 1927), Paris, p. 205.

- Jean Hubert.

L'Aéronautique, 9me année, No. 103 (dôc. 1927), Paris, p. 371, port.

- Pendant qu'on parle à Genève. La limitation des armements aériens

et l'aéronautique Allemande.

L'Aéronautique, 9me année, No. 96 (mai 1927), Paris, pp. 129-131, ill.

- Schneider cup.

L'Aéronautique, 9me année, No. 101 (Oct. 1927), Paris, p. 301.

- Les traversées de l'Atlantique Sud.

L'Aéronautique, 9me année, No. 94 (mars 1927), Paris, p. 65.

Boulton & Paul. The Boulton & Paul " Sidestrand."

Flight, Vol. 19, No. 37 (Sept. 15, 1927), London, p. 645, ill.

Bouman, L. F. Radio-bakens voor de luchtvaart.

Het Vliegveld, Ilde Jaarg., No. 7 (Juli 1927), Amsterdam, pp. 218-222.

Bourget. See Renvoisé: Le port aérien du Bourget et les grands énénements dont il a été le théâtre en 1927. Comparaison des trois grands ports aériens Le Bourget, Croydon, Tempelhof.

Bournemouth. The air racing at Bournemouth.

Aeroplane, Vol. 32, No. 16 (Apr. 20, 1927), London, pp. 436-441, ill.

- The Bournemouth Easter meeting. Programme of events.

Flight, Vol. 19, No. 15,16 (Apr. 14, 21, 1927), London, pp. 215-217, 234-247.

- The Bournemouth meeting.

Aeroplane, Vol. 32, No. 23 (June 8,1927), London, pp. 689-690, ill.

- Bournemouth—1910.

Flight, Vol. 19, No. 15 (Apr. 14,1927), London, pp. 218-220, ill.

Bournemouth. The Bournemouth Whitsun meeting.

Flight, Vol. 19, No. 23 (June 9, 1927), London, pp. 368-374, ill.

- On the Bournemouth meeting.

Aeroplane, Vol. 32, No. 16 (Apr. 20,1927), London, pp. 425-428, ill.

Bo wen, I. See Jennings, W. G., N. E. Rowe, and I. Bowen: The application of the algebraic formulae of R. & M. 1056 to problems of aircraft performance.

Bowen, R. Sidney, jr. The Second National Aeronautics Conference. Aviation, Vol. 23, No. 25 (Dec. 19, 1927), New York, pp. 1458-1465, ill.

Boykow, J. M. Motorische Flugzeugsteuerung.

Die Luftwacht, Heft 10, Okt. 1927, Berlin, pp. 582-583.

Bradfield, F. B., and L. P. Coombes. Autorotation measurements on a model aeroplane with zero stagger.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 430-436, diagr., table.

Bradfield, F. B., and A. S. Hartshorn. Model tests of a combined slot and aileron control on a wing of R. A. F. 15 section. Push forward type of auxiliary.

Aeronautical Research Committee, Reports and Memoranda No. 1047 (Ae. 233), May 1926, London, 1927, pp. 10, tabls., diagr.

- Slot and aileron control on a wing of R. A. F. 31 section with various types

of ailerons.

Aeronautical Research Committee, Reports and Memoranda, No. 1048 (Ae. 234), May 1926, London, 1927, pp. 16, tabls., diagr.

Bradfield, F. B., A. S. Hartshorn, and L. Caygill. Wind channel tests of slot and aileron control on a wing of R. A. F. 15 section.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 364393, diagr., tabls.

Bradfield, F. B. See Da vies, H., and F. B. Bradfield: Wind tunnel test of aerofoil M. 2.

- See Douglas, G. P., F. B. Bradfield, and A. S. Hartshorn: The lateral

control of a biplane by combined use of ailerons and varying leading edge slots.

Brainard, Edwin H. Major Brainard, chief of Marine Corps aviation.

U. S. Air Services, Vol. 12, No. 9 (Sept. 1927), Washington, D. C, pp. 49-50, ill.

Brakes. Freins sur roue d'avion.

L'Aéronautique, (L'Aérotechnique, 5me année, No. 51, 56), 9me année, No. 94, 99 (mars, août 1927), Paris, p. 79, 250, ill.

- Landing brakes for aircraft.

Aeroplane, Vol. 33, No. 22 (Nov. 30, 1927), London, pp. 738, 740, ill.

- See Bendix: The Bendix wheel and brake.

- See Weaver, Edgar R. : Airplane brakes.

Bramson, L. La suppression de la perte de vitesse involontaire.

La Technique Aéronautique, 18e année, n. s. No. 65 (15 mars 1927), Paris, pp. 66-72, ill.

Brancker, W. Sefton. Le prime rotte aeree delT impero britannico. Revista Aeronautica, Anno 3, N. 9 (Set. 1927), Roma, pp. 5-19.

Brandenburg, Ernst, Erich Ewald, Walter Georgii, Hugo Kromer, Eberhard Lempertz, Franz Linke, Otto Merkel, Edmund Pfister, Reinhold Seiferth und Oskar Ursinus im Auftrage des Deutschen Luftfahrt-Verbandes herausgegeben von Johannes Pöschel. Ins Reich der Lüfte. Zweite umgearbeitete und erweiterte Auflage der "Einführung in die Luftfahrt".

Leipzig, R. Voigtländers Verlag, 1927, pp. 244, ill.

Brazier, L. G. The flexure of thin cylindrical shells and other "thin" sections.

Aeronautical Research Committee, Reports and Memoranda, No. 1081 (M. 49), May 1926, London, 1927, pp. 22, tabls., diagr.

Brazil. Air transport in Brazil.

Bull. Pan American Union, Vol. 61 (June 29, 1927), Washington, D. C, pp. 286-288, ill.

- reorganisation de l'aviation brésilienne.

L'Aéronautique, 9e année, No. 95 (avril 1927), Paris, p. 103.

Breda. L'aeronautica Breda fucina de perfetti apparecchi e creatrice di ottimi piloti.

L'Ala d'Italia, Anno 6, N. 4 (5 Aprile 1927), Milano, pp. 137-139, ill.

Bredow, Traugott, und Fritz Müller. Das Luftverkehrsgesetz vom 1. August 1922.

Berlin, Carl Heymanns Verlag 1927.

Breese. The Breese monoplane "Aloha."

Aero Digest, Vol. 11, No. 3 (Sept. 1927), New York, p. 304, ill.

Breese, C. D. The training of aircraft apprentices.

Journ. Roy. Aer. Soc, Vol. 31, No. 195 (Mar. 1927), London, pp. 219-233.

Breguet, Louis. Commercial aviation. Its development and future. Aviation, Vol. 22, No. 4 (Jan. 24, 1927), New York, pp. 172-176.

- Sur les grands raids sans escale et le record de distance en avion.

C. R. Acad. Sci., T. 184, No. 13 (28 mars 1927), Paris, pp. 807-810.

- Sur les plus grandes distances franchissables sans escale et la capacité

de transport des avions de l'avenir sur les longs parcours. •

C. R. Acad. Sci., T. 184, No. 20 (16 mai 1927), Paris, pp. 1157-1159.

Breitpuss, Leonid. Internat. Studiengesellschaft zur Erforschung der Arktis mit dem Luftschiff (Aeroarctic). Verhandlungen der I. ordenti. Versammlung in Berlin 9. bis 13. November 1926.

Ergänzungsheft Nr. 191 zu " Petermanns Mitteilungen " 1927. Gothe, Verlag Justus Perthes, 1927, pp. vi und 115, ill., map.

- See Internationale Studiengesellschaft zur Erforschung der Arktis mit

dem Luftschiff (Aeroarctic) : Verhandlungen der I. ordenti. Versmalung in Berlin 9. bis 13. November 1926. Herausgegeben im Auftrage der Studiengesellschaft von Dr. Leonid Breitfuss.

Bremen. Attempt of the Bremen.

Popular Aviation, Vol. 1, No. 3 (Oct. 1927), Chicago, pp. 46-48, ill.

Brenasconi, Mario. See Bertozzi-Olmeda, F., and Mario Bernasconi: L'aerobus Junkers G. 31.

Brennan, Walter. Sauzedde brakes for airplanes.

Aviation, Vol. 22, No. 16 (Apr. 18, 1927), New York, p. 772, ill., diagr.

Bridgman, Leonard. The American national air tour.

Aeroplane, Vol. 33, No. 7 (Aug. 17, 1927), London, pp. 228-236, ill.

- Impressions of the Paris Show.

Aeroplane, Vol. 32, No. 1 (Jan. 5, 1927), London, pp. 16-18.

Briggs, Lyman James, and H. L. Dryden. Pressure distribution over airfoils at high speeds.

National Advisory Committee for Aeronautics, Report No. 255 March 2,1927, Washington, Government Printing Office, 1927, pp. 42, ill., diagrs., tables.

Brion, Maurice. Le "cheval de bois".

L'Aéronautique, (L'Aérotechnique, 5me année, No. 58), 9me année, No. 101 (oct. 1927), Paris, pp. 318-319, ill.

- La grille d'horizon.

L'Aéronautique, 9me année, No. 94 (mars 1927), Paris, p. 72, fll.

Bristol. Bristol's air pageant.

Flight, Vol. 19, No. 26 (June 30,1927), London, pp. 443-446, ill.

- The Bristol-Cherub aero engine.

Automobile Engineer, Vol. 17, No. 226 (Mar. 1927), London pp. 80-82, ill

- The Bristol "Jupiter" series VI engine.

Aviation, Vol. 23, No. 11 (Sept, 12, 1927), New York, pp. 599-600, ill.

- The Bristol Jupiter supercharged engine.

Aeroplane, Vol. 32, No. 11 (Mar. 16,1927), London, p. 286, ill.

- The Mark VI Bristol Jupiter engine.

Aero Digest, Vol. 11, No. 3 (Sept., 1927), New York, pp. 290, 292, ill.

- A new Bristol Fighter—Type 101.

Flight, Vol. 19, No. 34 (Aug. 25, 1927), London, pp. 589-590, 111.

British Africa. Air survey in British Africa.

Aeroplane, Vol. 33, No. 9 (Aug. 31, 1927), London, pp. 304-313, ill.

Britton, H. T. S. Aero dopes and varnishes.

National Advisory Committee for Aeronautics, Technical Memorandums No. 421, July 1927, Washington, pp. 20, diagrs., tables. From "The Industrial Chemist," March 1927. Aviation, Vol. 22, No. 19 (May 9, 1927), New York, pp. 991-994.

Industrial Chemist and Chemical Manufacturing, Vol. 3, No. 26 (Mar. 1927), London, pp. 116-120, ill.

Brock. See Round-the-world flight: Schlee and Brock complete first leg of round-the-world flight.

Brock, H. I. France's memorial to Lafayette Escadrille.

U. S. Air Services, Vol. 12, No. 10 (Oct. 1927), Washington, D. C, pp. 48-50, ill.

Brock, William. See Schee, Edward F., and William Brock: Schlee and Brock fly to Japan,

Bronte. See California to Hawaii: Smith and Bronte fly single engined plane from California to Hawaii.

Brown, Arthur Whitten. See History: Famous flights. The NC-4 trip.

Brown, Cecil Leonard Morley. The conquest of the air; an historical survey.

London, Oxford University Press, H. Milford, 1927, pp. 126.

Brown, George Granger. The relation of motor fuel characteristics to engine performance.

Department of Engineering Research University of Michigan. Engineering Research Bulletin, No. 7, May 1927, Ann Arbor, pp. 129, ill.

Bruce, S. M. See Cobham, Alan John: Australia and back, with a foreword by the Rt. Hon. S. M. Bruce.

Brunat, H. Safety in airplane flight.

National Advisory Committee for Aeronautics, Technical Memorandums No. 438, November 1927, Washington, pp. 38.

- La sécurité en avion.

La Technique Aéronautique, 18e année, n. s. No. 63 (15 Jan. 1927), Paris, pp. 2-18.

Bruner, S. -G. Considérations sur le vol économique des avions.

L'Aérophile, 35e année, Nos. 17-18 (ler-15 sept. 1927), Paris, pp. 270-272, ill.

Brunner. Erscheinungen im Luftmeer. Zurich, Rascher et Cie.

Bruno, H. A. The Wright Whirlwind motor has remarkable record. Slipstream, Vol. 8, No. 1 (Jan. 1927), Dayton, Ohio, p. 21.

Bryant, L. W., and D. H. Williams. An investigation of the flow of air around an aerofoil of infinite span.

Techn. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 151-189, ill., tabls.

Bryant, L. W., and S. B. Gates. The spinning of aeroplanes.

Journ. Roy. Aer. Soc, Vol. 31, No. 199 (July 1927), London, pp. 619-688, ill., diagr.

Bull's Eye Bailey. The Bull's Eye Bailey 140 HP. engine.

Aviation, Vol. 22, No. 1 (Jan. 3,1927), New York, pp. 46, 48, ill,

Burgers, J. M. Berekening van een ventilator-schroef met constante circulatie om de bladdoorsnede, ten gebruike in een windkanaal.

Ingénieur, Vol. 42, No. 19 (May 7, 1927), The Hague, pp. 398-408, ill.

Budget. See France: Le budget aéronautique pour 1928.

- See France: Le budget de l'aéronautique devant les chambres.

Bülow. Die Angriffe des Bombengeschwaders 3 auf England.

Die Luftwacht, Heft 7, 8, Juli, Aug. 1927, Berlin, pp. 380-388, 434-440.

- Der Luftkrieg während des Herbstfeldzuges in Italien 1917.

Die Luftwacht, Heft 11, Nov. 1927, Berlin, pp. 616-627, ill.

Buhl. The Buhl Airsedan.

Aeroplane, Vol. 33, No. 23 (Dec. 7, 1927), London, p. 760, diagr.

- The Buhl five-passenger airsedan.

Aero Digest, Vol. 10, No. 6 (June 1927), New York, pp. 576, 578, ill., diagr.

Burdett, H. Glues.

Journ, Roy. Aer. Soc, Vol. 31, No. 195 (Mar. 1927), London, pp. 255-262.

Bureau, Robert. Le rôle des ondes électromagnétiques dans la protection de la navigation aérienne.

La Technique Aéronautique, 18e année, n. s. No. 66 (15 avril 1927), Paris, pp. 110-126, ill.

Burgess, Charles P. Airship design.

New York, The Ronald Press Co., 1927, pp. 291, ill.

Burgess, George K. See Winters, S. R.: Guiding airplanes by radio beacons.

Burgess, Walter K. Commercial aviation in the Philippine Islands. Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, pp. 140,144, map.

Burghardt, Gotthard. Fliegerwetterkunde. Meteorologische Merkbuch. Flugmeteorologe der Deutschen Seewarte in Hamburg. Berlin, Richard Carl Schmidt & Co., 1927, pp. 131, ill. Bibliothek für Luftschiffahrt und Flugtechnik, Bd. 26.

Burton, Walter E. A "flying schoolhouse." Goodyear-Zeppelin Corp. engineers design craft for training military or commercial crews. Aviation, Vol. 23, No. 21 (Nov. 21, 1927), New York, pp. 1240-1241, ill.

- Winning balloon races with radio aid.

Aviation, Vol. 23, No. 10 (Sept. 5,1927), New York, pp. 539-540, ill.

Byrd. Byrd and Maitland planes alike in design.

Aviation, Vol. 23, No. 2 (July 11, 1927), New York, pp. 74-76.

- Chasing wild rumors of Byrd through slathers of French rain.

Literary Digest, Vol. 94 (July 16, 1927), New York, pp. 56-59.

Byrd, Richard Evelyn. Avigation.

Slipstream, Vol. 8, No. 12 (Dec. 1927), Dayton, Ohio, pp. 7-8, 35, ill.

- Byrd.

Popular Aviation, Vol. 1, No. 1 (Aug. 1927), Chicago, p. 13, ill.

6333—28-3

Byrd, Richard Evelyn. byrd flies with three comrades from new york to france.

U. S. Air Services, Vol. 12, No. 8 (Aug. 1927), Washington, D. C, pp. 34-38.

- byrd translantic flight.

Current History Magazine of N. Y. Times, Vol. 26 (Aug. 1927), New York, pp. 741-750, ill., diagr., map.

- byrd's scientific new york to paris flight awaits favorable weather

reports.

Aviation, Vol. 22, No. 26 (June 27, 1927), New York, pp. 1440-1441, ill.

- byrd's trans-atlantic trip.

Popular Aviation, Vol. 1, No. 2 (Sept. 1927), Chicago, pp. 5-8, ill.

- coming age in aviation.

World's Work, Vol. 54 (Oct. 1927), New York, pp. 600-610, ill.

- commander byrd's atlantic flight.

Flight, Vol. 19, No. 27 (July 7, 1927), New York, pp. 465-466.

- dick byrd as a mercury of modern flying science.

Literary Digest, Vol. 94 (July 23, 1927), New York, pp. 34-42, ill.

- it's safe to fly.

Collier's, Vol. 80 (Sept. 3, 1927), Springfield, Ohio, pp. 7-8, ill.

- our trans-atlantic flight.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, pp. 8-12, ill.

National Geographic Magazine, Vol. 52 (Sept. 1927), Washington, D. C, pp. 346-368, ill., map.

- See america: les grands voyages aériens. avec quatre hommes à

bord, 1'" america" traverse l'atlantique.

--See america: le raid transatlantique de 1' "america."

- See hydravion: de oceaanvlucht van commander richard byrd.

C

Caffort. See engines: deux moteurs de conception nouvelle. le moteur fairchild caminez 140 h. p. le moteur caffort 550 cv.

CAiRo-cape flight. the r. a. F. cairo-cape flight. official report on the big 14,000 mile flight. s

Flight, Vol. 19, Nos. 1-2 (Jan. 6-13, 1927), London, pp. 6-7, 21.

Calcutta. the short "calcutta" flying-boat.

Flight, Vol. 19, No. 1 (Jan. 6, 1927), London, pp. 3-5, diagr.

Caldwell, Cy. the curtiss sea hawk.

Aero Digest, Vol. 10, No. 4 (Apr. 1927), New York, pp. 276-277, 342-344, ill.

Caldwell, Frank W. comparison of flight tests of a number of wood propellers with wind tunnel tests on a series of wood propeller models.

Air Corps Information Circular, Vol. 6, No. 595 (Sept. 15, 1927), Washington, pp. 6, tables.

-section properties of a series of airfoils suitable for propeller design.

Air Corps Information Circular, Vol. 6, No. 597 (Nov. 1, 1927), Washington, pp. 21, diagrs., tables.

CALiFORNiA-honolulu. the california-honolulu flight. Flight, Vol. 19, No. 29 (July 21, 1927), London, p. 503.

California to hawaii. smith and bronte fly single engined plane from california to hawaii.

Aviation, Voi. 23, No. 4 (July 25, 1927), New York, pp. 194-195, ill.

Callendar, H. L. Dopes and detonation. Second report.

Aeronautical Research Committee, Reports and Memoranda, No. 1062 (E. 23), Dec, 1926, London, 1927, pp. 31, tabls., diagr.

Callendar, H. L., R. O. King and C. J. Sims. Report on dopes and detonation.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 601-654, diagr., tabls.

Callizo. See Hydravion: Het bedrog van Callizo.

Cam engine. Cam engine passes fifty hour test.

Aviation, Vol. 23, No. 1 (July 4, 1927), New York, pp. 20-21, ill.

- The new Cam engine.

Slipstream, Vol. 8, No. 8 (Aug. 1927), Dayton, Ohio, pp. 17-20, ill., diagr.

Cameras. The K-8 automatic recording aerial camera.

Aviation, Vol. 22, No. 9 (Feb. 28, 1927), New York, pp. 413-115, ill.

- See Photography.

Caminez, D. B. Fairchild Caminez engine now in production.

Aviation, Vol 23, No. 11 (Sept. 12, 1927), New York, pp. 591-594, ill., diagr.

Camm, F. J. Building a full size glider.

National Advisory Committee for Aeronautics, Technical Memorandums No. 429, September 1927, Washington, pp. 11, ill. From "The Air League Bulletin" of the Air League of the British Empire, London.

- Building a model airplane.

Airways, Vol. 3, No. 9 (May 1927), London, pp. 291-293, diagr.

Cammack, I. I. Aviation in the public schools of Kasnas City, Mo. Industrial Arts Magazine, Vol. 16 (Feb. 1927), Milwaukee, p. 64.

Camouflage. See Koopmans, Swinden: Tarnung von Artilleriestellungen gegen Sicht aus der Luft.

Canada. Aerial surveying in Canada.

Aeroplane, Vol. 32, No. 20 (May 18, 1927), London, p. 576.

- Aircraft and forestry in Canada.

Aeroplane, Vol. 32, No. 19 (May 11, 1927), London, pp. 550, ill.

- Canadian aerodromes and seaplane stations, 1926.

Aeroplane, Vol. 32, No. 19 (May 11, 1927), London, p. 533.

- The Canadian aircraft industry.

Aeroplane, Vol. 32, No. 19 (May 11, 1927), London, pp. 534, 543-548, diagr.

- Civil air transport in Canada.

Aeroplane, Vol. 32, No. 19 (May 11,1927), London, p. 552.

- Civil flying by the R. C. A. F., 1923-1926.

Aeroplane, Vol. 32, No. 19 (May 11, 1927), London, p. 533.

- The history of Canadian civil flying.

Aeroplane, Vol. 32, No. 19 (May 11, 1927), London, pp. 524-532, ill.

- On Canada's part in aviation.

Aeroplane, Vol. 32, No. 19 (May 11, 1927), London, pp. 513-518, ill.

- See Chicanot, E. L.: Aviation in Canada.

Cannegieter, H. G. Ballonvaart "Neerlandia" 5 Augustus.

Het Vliegvcld, Ilde Jaarg., No. 10 (Oct. 1927), Amsterdam, pp. 365-366.

- Hoogtevaart met den ballon Hollandia, op 21 October.

Het Vliegveld, Ilde Jaarg., No. 12 (Dec. 1927), Amsterdam, pp. 433-434, Ul.

Capetti, Antonio. Enrico Bernardi.

L'Aerotecnica, Vol. 7 (Anno 5) N. 7 (Luglio 1927), Pisa, pp. 403-415, ill.

- Primo congresso del motore a scoppio (Padova, 16-17 Giugno 1927).

L'Aerotecnica, Vol. 7 (Anno 5), N. 7 (Luglio 1927), Pisa, pp. 451-454.

Capon, R. S. Algebraic formulae for the performance of an aircraft at full throttle.

Aeronautical Research Committee, Reports and Memoranda, No. 1056 (Ae. 239), July,

1926, London, 1927, pp. 13, diagr.

- Note on the reduction of performance tests to the standard atmosphere.

Aeronautical Research Committee, Reports and Memoranda, No. 1080 (Ae. 260), Jan., 1927, London, 1927, pp. 8.

- Performance testing and analysis.

Journ. Roy. Aer. Soc, Vol. 31, No. 194 (Feb. 1927), London, pp. 102-132, ill., diagr.

- The reduction of aircraft performance tests.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 469-488.

- The representation of aircraft performance tests, using nondimensional

variables, with special reference to the prediction of the effects of change of loading on performance.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 462-468, diagr.

Cappa. Le moteur Cappa 18.

L' Aéronautique (L'Aérotechnique, 5e année, No. 51), 9me année, No. 94 (mars 1927), Paris pp. 77-78, ill.

Caproni. L'apporto degli apparecchi Caproni all'aviazione Italiana. Bombardamento aereo e vita in guerra di una nazione.

L'Ala d'Italia, Anno 6, N. 4 (5 Aprile 1927), Milano, pp. 128-130, ill.

- Caproni airplane Ca 73 (Commercial) and Ca 73 ter (Military).

National Advisory Committee for Aeronautics, Aircraft Circulars No. 51, Washington, August 1927, pp. 4, ill.

Caracciolo, Moreno. Aerodynamic laboratory at Cuatro Vientos.

National Advisory Committee for Aeronautics, Technical Memorandums No. 414, June

1927, Washington, pp. 13, ill.

From "Boletin Oficial," Royal Aero-Club of Spain, Second Quarter, April-June, 1924, and "L'Aéronautique," September, 1926.

Carafoli, Elie. Calcul de l'effort sustentateur et de la distribution des pressions sur une palette en rotation uniforme. Rotor à palette. C. R. Acad. Sci., T. 184, No. 15 (11 avril 1927), Paris, pp. 933-934.

- Confrontation des théories aérodynamiques modernes avec les lois de la

mécanique rationnelle.

L'Aérophile, 35e année, Nos. 5-6 (l«r-15 mars 1927), Paris, pp. 71-77, fil.

- Méthode générale pour le tracé des profils d'aviation.

C. R. Acad. Sci., T. 185, No. 17 (24 oct. 1927), Paris, pp. 842-844, ill.

- Sur le mouvement autour d'une plaque plane en rotation.

C. R. Acad. Sci., T. 184, No. 13 (28 mars 1927), Paris, pp. 804-807.

- Sur les profile aérodynamiques de forme générale.

C. R. Acad. Sci., T. 185, No. 20 (14 nov. 1927), Paris, pp. 1014-1016, ill.

- Sur une remarque au sujet du théorème des forces vives appliqué à

l'hydrodynamique rationnelle.

L'Aérophile, 35e année, Nos. 13-14 (1^-15 juil 1927), Paris, pp. 217-218, 219-220.

- Tracé général des profils avec dièdre à la pointe.

C. R. Acad. Sci., T. 185, No. 22 (28 nov. 1927), Paris, pp. 1189-1190.

Carafoli, Elie. See Toussaint, A., et E. Carafoli: Le choix du profil des ailes sustentatrices.

- See Toussaint, A., et E. Carafoli: Contribution à l'étude de l'écoulement

plan des fluides.

- See Toussaint, A., et E. Carafoli: Vérifications expérimentales de la théorie

des ailes sustentatrices.

Carburetor. See Taylor, P. B.: The carburetor air heater for the Wright Whirlwind engine.

Cardington. The Cardington airship shed and mooring tower.

Engineer, Vol. 143, Nos. 3712, 3713, 3714 (Mar. 4, 11, 18, 1927), London, pp. 230-231, 258-260, 288-291, Ul.

Carr. A successful failure. "Horsley" landed safely with over 1,000 gallons of petrol on board.

Flight, Vol. 19, No. 25 (June 23,1927), London, pp. 407-410, ill.

Carr-Gillman. The Carr-Gillman flight.

Slipstream, Vol. 8, No. 7 (July 1927), Dayton, Ohio, pp. 31, 33, ill., map.

Carriers. See Saratoga: The airplane carrier "Saratoga."

Carroll, Thomas. A comparison of the take-off and landing characteristics of a number of service airplanes.

National Advisory Committee for Aeronautics, Report No. 249, February 3, 1927, Washington, Government Printing Office, 1927, pp. 12, ill., diagrs., tables.

- See Reid, Elliott G., en Thomas Carroll: Het starten van eeen zwaarbelast

vliegtuig.

--See Reid, Elliott G, and Thomas Carroll : A warning concerning the takeoff with heavy load.

Carter, B. C. Dynamic forces in aircraft engines (torsional vibration).

Journ. Roy. Aer. Soc, Vol. 31, No. 196 (Apr. 1927), London, pp. 278-328, diagr. ill.

- Torsional vibration in engines. Effects of fitting a damper, a flywheel, or

a crank-shaft-driven supercharger.

Aeronautical Research Committee, Reports and Memoranda, No. 1053 (E. 22), Feb., 1926, London, 1927, pp. 37, diagr.

Cashman, Denis. The Guggenheim safe aircraft competition.

Slipstream, Vol. 8, No. 11 (Nov. 1927), Dayton, Ohio, pp. 13-14, ill.

- Light plane development—Are we neglecting it?

Slipstream, Vol. 8, No. 2 (Feb. 1927), Dayton, Ohio, pp. 11-12, ill.

Castagna, Glan Giacomo. Apprezzamento del concorso aereo nel combattimento terrestre.

Rivista Aeronautica, Anno 3, N. 1 (Gen. 1927), Roma, pp. 17-26.

Cautley, R. V. Fuel and oil consumption important factors on long distance flights.

Aviation, Vol. 22, No. 23 (June 6, 1927), New York, pp. 1214-1215, 1243, table.

Cave-Brown-Cave, T. R. Safety from fire in airships.

Journ. Roy. Aer. Soc, Vol. 31, No. 202 (Oct. 1927), London, pp. 973-986, tabls.

Caygill, L. E. See Anderson, E. F., L. E. Caygill, and R. McKinnon Wood: Fuel-scale and model measurements of lift and drag of Bristol Fighter with R. A. F. 32 wings.

- See Bradfield, F. B., A. S. Hartshorn, and L. Caygill: Wind channel tests

of slot and aileron control on a wing of R. A. F. 15 section.

- See Clark, B. D., R. G. Harris, and L. E. Caygill: Full scale and model

measurements of lift and drag of Bristol Fighter with R. A. F. 31 wings.

Caygill, L. E. See Jones, E. T., and L. E. Caygill : Full-scale and model measurements of lift and drag of Bristol Fighter with Handley Page slotted wings.

- See Jones, E. T., L. E. Caygill, R. G. Harris, and H. M. Garner: Lift and

drag of the Bristol Fighter with Fairey variable camber wings.

- See Nutt, Arthur E. Woodward, R. G. Harris, and L. E. Caygill: Full

scale and model measurements of lift and drag of Bristol Fighter with R. A. F. 30 wings.

Ceccaldi. See Dumanois et Ceccaldi: L'appareil de chronométrage automatique Dumanois Ceccaldi.

Cell. Le calcul d'une cellule d'avion basé sur les déformations de la cellule. Technique Automobile et Aérienne, 18 année, No. 137, 1927„ Paris, pp. 58-62, ill.

Central Aero-Hydrodynamical Institute. See Ozeroff, G. A.: The Central Aerohydrodynamical Institute.

Central States. The Central States "Monocoupe."

Aviation, Vol. 23, No 15 (Oct. 10, 1927), New York, pp. 895-896, ill,, diagr.

- Central States 75 h. p. "Monocoupe."

Aero Digest, Vol. 11, No. 4 (Oct. 1927), New York, p. 428, ill.

Cesare, Oscar. The first man to fly.

U. S. Air Services, Vol. 12, No. 9 (Sept. 1927), Washington, D. C, pp. 22-25, ill.

Chabonat, M. Les modèles réduits d'avions.

L'Aéronautique, (L'Aérotechnique, 5e année, No. 50), 9me année, No. 93 (fév. 1927), Paris, pp. 48-50, ill.

Chalamand. L'équipement des avions et des hydravions.

La Technique Aéronautique, 18e année, n. s. No. 69 (15 juil. 1927), Paris, pp. 194-202.

Chalamand, V. See Franck, P., et V. Chalamand: La traversée aérienne de l'Atlantique Nord.

Challe. See Blanchet, Georges: Aviateurs contemporains. Le lieutenant Challe et le capitaine Weiser.

Chamberlin, Clarence D. America to Germany.

Aeroplane, Vol. 32, No. 23 (June 8, 1927), London, pp. 674-676, ill.

- Berlin greets Chamberlin and Levine.

Flight, Vol. 19, No. 24 (June 16, 1927), London, p. 401.

- Chamberlin and Levine make record flight into Germany.

U. S. Air Services, Vol. 12, No. 7 (July 1927), Washington, D. C, pp. 27-30, ill.

- Chamberlin flies Bellanca plane to Germany.

Aviation, Vol. 22, No. 24 (June 13, 1927), New York, pp. 1276-1277, ill., map.

- Chamberlin-Levine flight from America to Germany.

Current History Magazine, N. Y. Times, Vol. 26 (July 1927), New York, pp. 543-547, ill., diagr. map.

- Chamberlin visits London.

Flight, Vol. 19, No. 28 (July 14, 1927), London, p. 472, ill.

- Chamberlin's Bellanca-Eindecker.

Die Luftwacht, Heft 7, Juli 1927, Berlin, pp. 406-410, ill.

- Chamberlin's flight to Germany.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, pp. 20-26, ill.

- La Deuxième traversée de l'Atlantique et le record du monde de distance

New York-Eisleben (Saxe). Chamberlin, avec son passager Levine, couvre 6,400 kilomètres en 42 heures.

L'Aéronautique, 9°™ année, No. 98 (juil. 1927), Paris, p. 208.

Chamberlin, Clarence D. L'exploit de Chamberlin et Levine.

L'Aérophile, 35* année, Nos. 13-14 (1<*-15 juil. 1927), Paris, pp. 211-212, ill.

- Famous flyer's impromptu rescue stunt.

Literary Digest, Vol. 93 (May 21, 1927), New York, pp. 62-66, ill.

- New York-Berlin (nearly). Clarence Chamberlin goes one better than

Capt. Lindbergh.

Plight, Vol. 19, No. 23 (June 9, 1927), London, p. 375, ill.

- Thousands greet Chamberlin at Vienna.

Aviation, Vol. 22, No. 26 (June 27, 1927), New York, pp. 1436-1437, ill.

- La traversée de Chamberlin et Levine.

L'Aérophile, 35° année, Nos. 11-12 (1<*-15 juil. 1927), Paris, p. 184.

- The weather conditions on my flight to Germany.

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, pp. 513, 616-618, ill., map.

- See Columbia: The second great hop.

- See Hübner, G. : New York-Berlin.

- See Hydravion: Over den Atlantischen Oceaan.

- See New York-Germany flight: The New York-Germany flight. Chamberlin and Levine establish world's non-stop distance record.

- See Pistolesi, Enrico: Lindberg, Bellanca, Chamberlain, De Pinedo.

- See Records: Het nieuwe duurrecord.

- See Reyneker, F. H.: Be motor, die Lindbergh en Chamberlin over den

Oceaan bracht: De Wright "Whirlwind."

Champion, Jr., C. C. Recent development in aircraft power plants.

Journ. Soc. Automotive Engineers, Vol. 20, No. 5 (May 1927), New York, pp. 647-660, ill.

Champion, Carlton C. An epic of the air. Champion's great feat. Popular Aviation, Vol. 1, No. 2 (Sept. 1927), Chicago, pp. 11-12, ill.

Chandler, C. de F. National balloon race from Akron, May 30, 1927.

U. S. Air Services, Vol. 12, No. 7 (July 1927), Washington, D. C, pp 45-49, ill.

Chanute Field. See Army Air Service: Flying cadet requirements.

Chapleo, C. Wiring lug design.

Aircraft Engineer, suppl. to Flight, Vol. 19, No. 13 (Mar. 31, 1927), London, pp. 188d-188e, diagr.

Chemistry. See Corrie, George W.: Chemistry and aircraft.

Chemnitz. L'aéroport de Chemnitz.

L'Aéronautique, 9me année, No. 94 (mars 1927), Paris, p. 93, ill.

Cheney award. Cheney award.

17. S. Air Services, Vol. 12, No. 7 (July 1927), Washington, D. Ç., p. 24.

Chevreau. Les essais de patins atterrisseurs à chenille.

L'Aérophile, 35e année. Nos. 21-22 (ler-15 nov. 1927), Paris, p. 333, ill.

Chicago. See Kemp, P. G.: Air transportation needs in Chicago.

Chicanot, E. L. Aviation in Canada.

Popular Aviation, Vol. 1, No. 4 (Nov. 1927), Chicago, pp. 15-18, ill.

China. The R. A. F. in China.

Aeroplane, Vol. 33, No. 1 (July 6, 1927), London, pp. 40, 42, ill.

Chronometer. See Dumanois et Ceccaldi: L'appareil .de chronométrage automatique automatique Dumanois Ceccaldi.

Cierva, Juan de la. Essai des nouveaux autogires.

L'Aéronautique, 9me année, No. 103 (déc. 1927), Paris, p. 406, ill.

Cirrus. The "Cirrus" Mark II engine.

Flight, Vol. 19, No. 34 (Aug. 25, 1927), London, p. 596, ill.

Civil aeronautics. Civil airway statistics, January-June, 1927.

U. S. Air Services, Vol. 12, No. 11 (Nov. 1927), Washington, D. C, pp. 42-43.

Civil aviation. Civil aviation abroad in 1926.

Flight, Vol. 19, No. 25 (June 23, 1927), London, pp. 415-416.

- Civil aviation. Annual report from April 1 to December 31, 1926.

Flight, Vol. 19, No. 17 (Apr. 28,1927), London, pp. 263-265.

- The growth of private flying.

Flight, Vol. 19, No. 31 (Aug. 4,1927), London, pp. 550-551.

- U. S. civil airways statistics January-June, 1927.

Aero Digest, Vol. 11, No. 4 (Oct. 1927), New York, p. 468.

- See Hulbert, N. J.: Civil aviation.

- See Italy: Italian civil aviation.

- See Wronsky, Martin: The leader of German civil aviation.

Clark, B. D., R. G. Harris, L. E. Caygill. Full scale and model measurements of lift and drag of Bristol fighter with R. A. F. 31 wings.

Techn. Rep. Aer. Res. Com.. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 247-252, diagr., tabls.

Clark, N. M. Riders of the gale; interview with W. T. Van Orman.

American Magazine, Vol. 103 (Apr. 1927), Springfield, Ohio, pp. 36-37, ill.

Clark, V. E. Apparent present tendencies in airplane design.

Aviation, Vol. 22, No. 19 (May 9, 1927), New York, pp. 985-988, ill. Mechanical Engineering, Vol. 49, No. 7 (July 1927), New York, pp. 727-730, ill.

- Design your own airfoils.

Aviation, Vol. 23, No. 16 (Oct. 17,1927), New York, pp. 944-946, diagr.

Clarke, T. W. K., and V. M. Faulkner. D. M. Smith's method for the determination of the transverse frequencies of vibration of uniform beams. Aeronautical Research Committee, Reports and Memoranda, No. 1058 (Ae. 240), Apr., 1926, London, 1927, pp. 9, diagr.

Claudy, Carl H. The Army's first airplane.

Aero Digest, Vol. 11, No. 6 (Dec. 1927), New York, pp. 636-640, ill.

Clayton, H. Helm. World weather records. Collected from official sources by Dr. Felix Exner, Sir Gilbert Walker, Dr. G. C. Simpson, H. Helm Clayton, Robert C. Mossman. Assembled and arranged for publication by H. Helm Clayton. Published under grant from John A. Roebling.

Smithsonian Miscellaneous Collections, Vol. 79, Publication 2913, Washington, published by the Smithsonian Institution, August 22, 1927, pp. 1199, tables.

Cleary, Charles J. Standard methods of applying fabric to airfoils.

Slipstream, Vol. 8, No. 2 (Feb. 1927), Dayton, Ohio, 15-18, 28, diagr., tables.

Clements, N. V. Recent developments in the Curtis Hawk.

Slipstream, Vol. 8, No. 1 (Jan. 1927), Dayton, Ohio, pp. 25-26, ill.

Clephane, Dougles W. Weather Bureau aid in ocean flying.

Aviation, Vol. 23, No. 2 (July 11, 1927), New York, pp. 84-86, ill.

Clerget, P. Considérations sur les risques d'incendie en vol et à terre.

La Technique Aéronautique, 18e année, No. 67 (15 mai 1927), Paris, pp. 145-151, ill.

Cleveland. Cleveland means to be aeronautic leader.

U. S. Air Services, Vol. 12, No. 9 (Sept. 1927), Washington, D. C, p. 21, ill.

Clevenger, Cloyd P. Modern flight; a manual of practical flying. Denver, Col., Alexander Industries, inc., 1927, pp. 81.

Clevenger, Cloyd P. The way to control a ship in spinning. Aero Digest, Vol. 11, No. 4 (Oct. 1927), New York, p. 432.

Clifford, G. H. W. See ..Sutton, A. j., and G. H. W. Clifford: An experimental investigation into the properties of certain framed structures having redundant bracing members.

Climbing. See Walker, C. C: Climbing efficiency of aircraft.

Clouds. See Humphreys, W. j.: Fogs and clouds.

Clover field. See Rogers, Will: Flying at Clover Field.

Coast Guard. Vought planes added to Coast Guard Service. Aviation, Vol. 22, No. 18 (May 2, 1927), New York, p. 942, ill.

Cobham, Alan John. Airports in every town.

Airways, Vol. 3, No. 9 (May 1927), London, pp. 273-274, 302, ill.

--Australia and back, with a foreword by the Rt. Hon. S. M. Bruce.

London, A. & C. Black, ltd., 1927, pp. 124, ill.

- Sir Alan Cobham on the perils of bumps in the air.

Literary Digest, Vol. 94 (Sept. 24, 1927), New York, pp. 72-74.

- Sir Alan Cobham starts on 20,000 miles' tour. .

Flight, Vol. 19, No. 47 (Nov.. 24, 1927), London, pp. 807-809, ill.

- Sir Alan Cobham's African flight.

Aeroplane, Vol. 33, No. 21 (Nov. 23, 1927), London, p. 698, ill.

Cochrane, R. A. Touring Europe in a Westland "Widgeon."

Flight, Vol. 19, No. 45 (Nov. 10, 1927), London, pp. 779-781, ill., map.

Cogliolo, Pietro. Codice aeronautico.

Milano, Libreria Internazionale Ulrico, Hoepli, 1927.

Colby, Thomas B. Across America on "The wings of progress." Aero Digest, Vol. 11, No. 4 (Oct. 1927), New York, pp. 391, 464, ill.

Coli. See Nungesser et Coli: Paris-New York sans escale. La tentative de Nungesser et de Coli.

Collier trophy. Collier Trophy awarded for parachute development. Slipstream, Vol. 8, No. 3 (Mar. 1927), Dayton, Ohio, pp. 21-22, ill.

- Collier trophy awarded to Major Hoffman.

U. S. Air Services, Vol. 12, No. 2 (Feb. 1927), Washington, D. C, p. 44. Maj. Edward L. Hoffman

Colliers, W. G. They lifted the world with a toy; story of the Wright boys. Collier's, Vol. 80 (Aug. 20, 1927), Springfield, Ohio, pp. 8-9, ill.

Collins, C. A. Fresh water.

U. S. Air Services, Vol. 12, No. 11 (Nov. 1927), Washington, D. C, pp. 16-21, ill. Mississippi flood work.

Colombia. Colombian airpost innovation.

Aero Field, Vol. 1, No. 10 (Jan. 1927), London, pp. 220-221, map.

- Success of commercial aviation in Colombia.

Pan American Magazine, Vol. 39 (Jan. 1927), Panama City, R. P. pp. 211-216, ill.

Columbia. The history of the Columbia.

Aviation, Vol. 22, No. 26 (June 27, 1927), New York, pp. 1430-1431, ill.

- The second great hop.

Popular Aviation, Vol. 1, No. 1 (Aug. 1927), Chicago, pp. 10-12, ill.

Colvin, Charles H. The Pioneer earth inductor compass.

Slipstream, Vol. 8, No. 7 (July 1927), Dayton, Ohio, pp. 23, 25, ill., diagr.

Colvin, Charles, W. Les instruments à lecture verticale. L'Aéronautique, 9me année, No. 92 (Jan. 1927), Paris, p. 28.

Comfort. Comfort in air travel.

Flight, Vol. 19, No. 6 (Feb. 10,1927), London, pp. 73-74.

- On comfort in air travel.

Aeroplane, Vol. 32, No. 7 (Feb. 16, 1927), London, pp. 165-168.

Commercial aeronautics. Aircraft export figures for the first six months of 1927.

Aviation, Vol. 23, No. 20 (Nov. 14,1927), New York, p. 1175.

- American airline operations.

Scient. Amer., Vol. 136 (Jan. 1927), New York, pp. 60-61, ill.

- Aviation's future as seen by experts.

Literary Digest, Vol. 93 (June 25, 1927), New York, pp. 10-11.

- Business as usual by airplane.

Literary Digest, Vol. 94 (Sept. 1927), New York, p. 25, ill.

- Business has wings.

Magazine of Business, Vol. 52 (Oct. 1927), Chicago, pp. 414-415, ill.

- Business side of flying.

New Republic, Vol. 51 (July 20,1927), New York, pp. 215-216.

- Contracts in excess of $3,000,000 to industry.

U. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. C, p. 41.

- Episodes gay, grave and heroic. Report of Curtiss Flying Service makes

fascinating reading.

IT. S. Air Services, Vol. 12, No. 3 (Mar. 1927), Washington, D. C, pp. 26-29, ill.

- Flights and commercial aviation.

Nation, Vol. 124 (June 22, 1927), New York, p. 684.

- Jahrbuch für Luftverkehr 1926-1927.

München, Richard Pflaum.

- Lindbergh's feat to fill the sky with flyers.

Literary Digest, Vol. 93 (June 11,1927), New York, pp. 5-7, ill.

- A map drawing of the United States airways as of Dec. 31, 1927.

Aviation, Vol. 23, No. 15 (Oct. 10,1927), New York, p. 900, map.

- Model passenger air line—Los Angeles to San Francisco.

U. S. Air Services, Vol. 12, No. 11 (Nov. 1927), Washington, D. C, p. 48.

- Next, the Pacific.

Independent, Vol. 118 (June 4, 1927), Boston, p. 577.

- On getting foreign business.

Aeroplane, Vol. 33, No. 20 (Nov. 16, 1927), London, pp. 661-664, ill.

- On what the market wants.

Aeroplane, Vol. 33, No. 13 (Sept. 28, 1927), London, pp. 421-428, ill.

- Our air ship gets its first bump.

Magazine of Business, Vol. 52 (Nov. 1927), Chicago, pp. 556-557, ill.

- Our commercial aviation.

World's Work, Vol. 53 (Mar. 1927), Garden City, N. Y., pp. 468-470, ill.

- Passenger air lines.

Science n. s., Vol. 65 (June 24, 1927), Garrison, N. Y., pp. 12-14. Literary Digest, Vol. 94 (July 30,1927), New York, p. 23.

- Philadelphia Rapid Transit proposes 2,000 miles passenger system.

U. S. Air Services, Vol. 12, No. 1 (Jan. 1927), Washington, D. C, p. 47.

Commerical aeronautics. Pony express takes to the air.

Literary Digest, Vol. 94 (Sept. 17,1927), New York, pp. 10-11.

- Railroad interest inair transportation.

Literary Digest, Vol. 94 (July 23, 1927), New York, pp. 56-57.

- A record commercial mileage in 1926.

Aviation, Vol. 22, No. 17 (Apr. 25, 1927), New York, p. 853.

- Shaw publications takes to the air.

Magazine of Business, Vol. 52 (Oct. 1927), Chicago, pp. 401-402, ill.

- Sky-trains of cars.

Literary Digest, Vol. 94 (Sept. 3, 1927), New York, pp. 57-58.

- 3,600 miles in 36 hours.

Magazine of Business, Vol. 52 (Dec. 1927), Chicago, pp. 708-710, ill.

- U. S. Air route operators' reports.

Aero Digest, Vol. 10, No. 2 (Feb. 1927), New York, pp. 94, 154-157, map.

- Die Weltluftmächte. 1. Kapitel. Frankreich als Luftmacht.

Die Luftwacht, Heft 4, April 1927, Berlin, pp. 177-183.

- What price air traffic?

Review of Reviews, Vol. 75 (June 1927), New York, pp. 649-650.

- See Atlantic: Louis Blériot et la traversée commercial de l'Atlantique.

- See Ducout, Marcel: Le réseau intérieur est-il souhaitable?

- See Gossow, E.: Deutsche Verkehrsflugzeuge.

- See Gymnich, Alfried: Die technischen Vorbedingungen des Transozean-Luftverkehrs.

- See Henrici, S. : Weltluftverkehr und Weltwirtschaft.

- See Huth, W.: Die Entwicklung des deutschen Verkehrsflugzeuges.

- See Hydravion: De Nederlandsche vliegtuig-Nijverheid in de jaren 19191926.

- See Italy: Air traffic in Italy during 1926.

-- See Kredel, Ernst: Stand und Aussichten des deutschen Luftverkehrs.

- See Kredel, Ernst: Das Weltflugwesen im Jahre 1927. I. Weltluftverkehr.

- See Löwe, Karl F: Navigation im Luftverkehr.

- See Mayo, R. H.: Some notes on the design of commercial aircraft from*

the operational point of view.

- See Meijer, W. L. Groeneveld: De aansprakelijkheid van den vervoerder

bij het Internationale Luchtvervoer.

- See Steude, Erich: Leistungs-Berechnungen von Verkehrsluftschiffen für

transatlantische Luftverkehrslinien.

- See Thomas, Marius: Transformation de l'aéroport de Croydon-Waddon.

- See United States Department of Commerce: Air commerce regulations.

Effective December 31, 1926.

- See Wronsky, Martin: Air traffic in Germany.

Commercial aviation. Aviation and business.

Aviation, Vol. 23, No. 12 (Sept. 19, 1927), New York, pp. 674-675.

- Commercial plane manufacturers discuss idea of forming group.

Aviation, Vol. 23, No. 25 (Dec. 19, 1927), New York, p. 1471, ill.

Commercial aviation. Merchandising new production airplanes. Slipstream, Vol. 8, No. 2 (Feb. 1927), Dayton, Ohio, p. 10.

- Mileage statistics on airways.

Aviation, Vol. 23, No. 23 (Dec. 5, 1927), New York, pp. 1353-1355, map.

- Money in aircraft.

Aeroplane, Vol. 32, No. 13 (Mar. 30, 1927), London, p. 332.

- The safety in the books of daily reports guarding the flying passenger

against accident.

Illustrated London News, Vol. 171, No. 4607 (Aug. 6, 1927), London, pp. 232-233, ill.

- Special survey made of Nation's civil airways.

Aviation, Vol. 23, No. 14 (Oct. 3, 1927), New York, p. 824.

- Year's review in development of commercial aviation.

Slipstream, Vol. 8, No. 12 (Dec. 1927), Dayton, Ohio, pp. 26-28.

- See Belgian Congo: Les transports aériens réguliers au Congo belge.

- See Ducout, Marcel: Caractéristiques comparées des avions commerciaux

en service sur les lignes française et allemandes.

- See Fokker, A. H. G. : Airplanes for commercial aviation.

- See France: Le trafic aérien française en 1926.

- See Jacques, P.: L'aviation en Grande-Bretagne.

- See Land, Emory S.: Commercial aviation as a corollary of naval and

military aviation.

- See Mehren, E. J. : Traveling the air in Germany.

- See Rague, Paul: Enquete technique sur l'aviation commerciale. Le rôle

des chambres de commerce' dans le développement de l'aviation.

- See Röder, Hermann: Flugzeug-Navigation und Luftverkehr.

- See United States: Les avions de transport public aux États-Unis.

- See Vallecchi, G. : La navigazione aerea commerciale.

- See Verdurand, A.: Les colossales perspectives d'avenir de l'aviation

commerciale allemande.

- See Vivent, Jacques: Enquete technique sur l'aviation commerciale. Le

Réseau aérien intérieur.

- See Warner, Edward Pearson: Service aviation, aeronautical engineering

and commercial aviation.

Comoz, Pierre. La croisière aérienne en corse de l'Aéro-Club.

L'Aérophile, 35e année, Nos. 13-14 (ler-15 juil. 1927), Paris, pp. 206-207, ill.

Compass. Le compas a induction terrestre.

L'Aérophile, 35e année, Nos 15-16 (ler-15 août 1927), Paris, p. 242, ill.

- The Pioneer earth inductor compass.

Aeroplane, Vol. 32, No. 5 (Feb. 2, 1927), London, pp. 128-130, ill.

- See Col vin, Charles H.: The Pioneer earth inductor compass.

- See Goldsborough, Brice: The earth inductor compass.

- See Pacher, W.: Das Kompensieren von Magnetkompassen in Flugzeugen.

- See Pioneer Instrument Co.: Le compas Pioneer.

- See Schoeffel, M. F.: The installation and correction of compasses in

airplanes.

Condor. The Rolls-Royce Condor IV.

Aeroplane, Vol. 32, No. 2 (Jan. 12,1927), London, p. 44, ill.

Congress of Aerial-Navigation. See Gardner, Lester D.: The fourth Congress of Aerial Navigation.

Congresso Internazionale di Navigazione Aerea. Il IV Congresso Internazionale di Navigazione Aerea.

L'Aerotecnica, Vol. 7 (Anno 6), N. 11 (Nov. 1927), Pisa, pp. 697-732. .

Connecting rods. See Farren, W. S.: The articulated connecting rod—an alternative method for finding accelerations.

- See Fearn, E. J. : The articulated connecting rod.

- See Morris, J.: The articulated connecting rod. Some observations on

the papers of Messrs. Fearn and Farren.

Connell, Byron J. Lieutenant Connell sets four new records. Aviation, Vol. 23, No. 11 (Sept. 12, 1927), New York, p. 597.

- Navy pilot sets twelve new records.

Aviation, Vol. 23, No. 6 (Aug. 8, 1927), New York, pp. 310-311, ill.

Consolidated Courier. The new Consolidated Courier.

Aviation, Vol. 23, No. 1 (July 4, 1927), New York, p. 26, diagr.

Consolidated Instrument Company. See Equipment: The new Consolidated instrument board.

Construction. Aircraft construction under difficulties.

Flight, Vol. 19, No. 7 (Feb. 17,1927), London, pp. 82-84, ill., diagr.

- Un nouveau procédé d'assemblage.,

L'Aéronautique, (L'Aérotechnique, 5e année, No. 55), 9me année, No. 98 (juil. 1927), Paris, p. 222, m.

- See Rethel, W.: Konstruktive Einzelheiten aus dem Pariser "Aero-Salon".

Control. Can the control of airplanes be simplified?

Aviation, Vol. 22, No. 17 (Apr. 25, 1927), New York, pp. 849-850.

- Combined rudder and brake control.

Scient. Amer., Vol. 136 (Mar. 1927), New York, p. 202, diagr.

- The Handley Page slot-and-aileron lateral control.

Flight, Vol. 19, No. 10 (Mar. 10,1927), London, pp. 150-151, diagr.

- The lateral control of stalled aeroplanes.

Techn. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 274-315, diagr., tabls.

- Progress with the slot and aileron control.

Aeroplane, Vol. 32, No. 7 (Feb. 16, 1927), London, p. 182.

- See Arens: The Arens control.

- See Boykow, J. M.: Motorische Flugzeugsteuerung.

- See Bradfield, F. B., A. S. Hartshorn, and L. Caygill: Wind channel tests

of slot and aileron control on a wing of R. A. F. 15 section.

- See Clevenger, Cloyd P. : The way to control a ship in spinning.

- See Douglas, G. P., F. B. Bradfield, and A. S. Hartshorn: The lateral

control of a biplane by combined use of ailerons and varying leading edge slots.

- See Giacomelli, R.: Dispositivi per il controllo laterale e l'aumento della

portanza nell'ala delTaeroplano e dell'uccello.

Control. See Gibson, W. G.: Aeroplane controls; faults and diagnosis.

- See Jones, B. Melvill, and A. Trevelyan: Step-by-step calculation upon

the asymmetric movements of stalled aeroplanes.

- See Mitten-Braley Control: The Mitten-Braley airplane control.

- See Stevens, H. L.: The behavior of certain aeroplanes when the controls

are abandoned in stalled flight.

- See Stevens, H. L.: Full scale tests of a Bristol Fighter with increased

rudder control.

Coolidge, Calvin. Address of President Coolidge at the awarding to Col. Charles A. Lindbergh by the National Geographic Society of the Hubbard medal.

Washington, Government Printing Office, 1927, pp. 2.

- Address of President Coolidge bestowing upon Colonel Charles A. Lindbergh the distinguished flying cross. Washington, D. C, Saturday, June 11, 1927.

Washington, Government Printing Office, 1927, pp. 3.

- I believe the American aviation program is sound.

U. S. Air Services, Vol. 12, No. 1 (Jan. 1927), Washington, D. G., p. 17.

Coombes, L. P. See Bradfield, F. B., and L. P. Coombes: Autorotation measurements on a model aeroplane with zero stagger.'

- See Douglas, G. P., and L. P. Coombes: The measurement of torque

grading along an airscrew blade.

Coop, Ernesto. Alcune considerazioni sulla guerra aerea.

Rivista Aeronautica, Anno 3, N. 8 (Agosto 1927), Roma, pp. 16-30.

- Influenza delTarma aerea nella difesa costiera.

Rivista Aeronautica, Anno 3, N. 7 (Luglio 1927), Roma, pp. 59-79.

Copenhagen show. The international aero show at Copenhagen.

Flight, Vol. 19, Nos. 34-35 (Aug. 25-Sept. 1, 1927), London, pp. 590-593, 605-607, 626, ill., diagr.

- Internationale Luftfahrt-Ausstellung in Kopenhagen.

Die Luftwacht, Heft 10, Okt. 1927, Berlin, pp. 541-544, ill.

- See Dollfus, Charles: L'exposition et le meeting de Copenhague.

- See Hildesheim, Erik: The Copenhagen aero show.

- See Hydravion: De Luchtvaart-Tentoonstelling te Kopenhagen.

Corrie, George W. Chemistry and aircraft.

Aero Digest, Vol. 11, No. 4 (Oct. 1927), New York, pp. 418, 478, ill.

Corrosion. Light alloys and protection against corrosion. Aeroplane, Vol. 33, No. 17 (Oct. 26,1927), London, p. 592.

Cost. Cost of operating 3-engine planes.

Aviation, Vol. 22, No. 5 (Jan. 31, 1927), New York, pp. 222-223.

- The cost of running a "Moth."

Flight, Vol. 19, No. 20 (May 19,1927), London, pp. 312-313.

Costanzi, G. L'industria del cloro e la chimica di guerra.

Rivista Aeronautica, Anno 3, N. 2 (Feb. 1927), Roma, pp. 64-69.

Costes, Dietjdonne. See Paris to Buenos Aires: French airmen reach Brazil.

- See South Atlantic Ocean: South Atlantic spanned.

Costes et Le Brix. De Paris au Brésil en deux étapes. Costes et Le Brix, sur Breguet 19 Hispano, franchissent l'Atlantique sud sans escale et gagnent Buenos-Ayres.

L'Aéronautique, 9me année, No. 102 (nov. 1927), Paris, pp. 334-335, ill.

Cotton. See Sloan, George A.: American cotton and American airplanes.

Cournot, J. Le laboratoire de construction aéronautique.

La Technique Aéronautique, 18e année, n. s. No. 68 (15 juin 1927), Paris, pp. 162-182, ill.

Courtney, F. T. The case of the owner-pilot.

Airways, Vol. 3, No. 5 (Jan. 1927), London, pp. 143-144.

Cousin. Le recrutement, l'apprentissage le perfectionnement et l'entrainement des pilotes, pour la plus grande sécurité.

La Technique Aéronautique, 18e année, h. s. No. 70 (15 août 1927), Paris, pp. 210-220.

Coyler, D. B. The air mail service.

Journal of the Western Society Engineers, Vol. 32, No. 5 (June 1927), Chicago, pp. 161-164.

Cram, Ralph W. Hail 1927. Good-bye 1926.

Aero Digest, Vol. 10, No. 1 (Jan. 1927), New York, pp. 13, 70.

- The 1927 National Air Tour.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, pp. 132-136, 230, ill.

- The romance of flying. Facts and figures.

Aero Digest, Vol. 10, No. 6 (June 1927), New York, pp. 572, 574, 625, map.

Cramer, W. Un transport aérien mondial est-il possible? H. M. Hauschild, éditeur à Brème.

Crane, Henry M. Aero engine fuels of today and tomorrow.

Journ. Roy. Aer. Soc, Vol. 31, No. 197 (May 1927), London, pp. 474-475.

Crawford. A light aeroplane from Hinaidi.

Aeroplane, Vol. 33, No. 15 (Oct. 12,1927), London, pp. 518-519, ill., diagr.

Cribbins, W. W. Their names shall live! Services at sea in memory of the aviators who lost their lives in the trans-Pacific air Derby. Sunset, Vol. 59 (Nov. 1927), San Francisco, pp. 14-15, ill.

Crocco, G. Arturo. L'autonomia degli aerei e il segreto di Lindberg. Rivista Aeronautica, Anno 3, N. 7 (Luglio 1927), Roma, pp. 15-43, ill.

-L'equivalenza degli aerei. Meditazioni di aeronautica comparata.

Roma, tip. del Senato di G. Bardi, 1927, pp. 90.

Estr. dal Vol. 1 della Colleztone aeronautica, rel. al IV Congr. intern, di navigazione aerea, Roma 24-30 Ottobre, 1927.

Croft-Cooke, Rupert. The new Argentine air station.

Aero Field, Vol. 2, No. 3 (June 1927), Sutton Coldfleld, England, pp. 50-51, ill.

Crowley, jr., J. W. Pressure distribution over a wing and tail rib of a VE-7 and of a TS airplane in flight.

National Advisory Committee for Aeronautics, Report No. 257, May 9, 1927, Washington, Government Printing Office, 1927, pp. 37, ill., diagrs., tables.

Crowther, S. Seeing Colombia from the air.

World's Work, Vol. 55 (Nov. 1927), Garden City, N. Y., pp. 42-52, ill.

Croydon. Popular literature on aviation.

Aero Field, Vol. 2, No. 6 (Oct. 1927), Sutton Coldfleld, England, pp. 123-126.

-See Renvoisé: Le port aérien du Bourget et les grands énénements dont il

a été le théâtre en 1927. Comparaison des trois grands ports aériens Le Bourget, Croydon, Tempelhof.

t Croydon-Waddon. See Thomas, Marius: Transformation de l'aéroport de Croydon-Waddon.

Cuatro Vientos. See Caracciolo, Moreno: Aerodynamic laboratory at Cuatro Vientos.

Curtiss. The Curtiss attack plane. A-3 "Falcon."

Aviation, Vol. 23, No. 4 (July 25, 1927), New York, pp. 200-202, ill.

- Curtiss builds largest all-metal bomber. "Condor."

Aviation, Vol. 23, No. 24 (Dec. 12, 1927), New York, pp. 1404-1405, ill.

- Curtiss builds new Navy fighter. F7C1.

Aviation, Vol. 22, No. 11 (Mar. 14, 1927), New York, pp. 514-515, ill.

- The Curtiss "Condor."

Flight, Vol. 19, No. 48 (Dec. 1,1927), London, pp. 819-820, Ü1.

- The Curtiss "Condor" bomber.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, pp. 184,185, ill.

- Curtiss "Condor," latest night bombardment plane.

U. S. Air Services, Vol. 12, No. 8 (Aug. 1927), Washington, D. C, pp. 23-25, ill.

- Curtiss D-12 water-cooled engine performs miracles at Panama.

U. S. Air Services, Vol. 12, No. 9 (Sept. 1927), Washington, D. C, p. 50.

- The Curtiss geared type V-1550 motor.

Aero Digest, Vol. 11, No. 5 (Nov. 1927) New York, p. 552, ill.

- The Curtiss V. 1550 and G. V. 1550 engines.

Flight, Vol. 19, No. 14 (Apr. 7,1927), London, pp. 200-201, ill.

- Curtiss water-cooled engines shine at Spokane.

u. S. Air Services, Vol. 12, No. 11 (Nov. 1927), Washington, D. C, p. 38.

- Curtiss wins training plane competition.

Aviation, Vol. 22, No. 11 (Mar. 14,1927), New York, p. 510.

- The demonstration of the Sea Hawk.

Aviation, Vol. 22, No. 12 (Mar. 21, 1927), New York, pp. 577, 579, ill.

- The development of the Curtiss Hawk.

Aviation, Vol. 22, No. 1 (Jan. 3, 1927), New York, pp. 24-25, ill.

- Mighty war machine receives plaudits of Army flyers. "Condor."

Slipstream, Vol. 8, No. 9 (Sept. 1927), Dayton, Ohio, pp. 7-9, HI.

- A new Curtiss fighter. Sea-Hawk.

Aeroplane, Vol. 32, No. 13 (Mar. 30,1927), London, p. 341, ill.

- See Clements, N. V.: Recent developments in the Curtis Hawk.

- See Jones, "Casey": Review of Curtiss flying service.

Curtiss Aeroplane & Motor Co., Inc. Review of Curtiss Aeroplanes & Motor Co., Inc.

Slipstream, Vol. 8, No. 4 (Apr. 1927), Dayton, Ohio, pp. 20-27, ill.

- See Keys, C. M.: Summary of business for 1926, Curtiss Aeroplane &

Motor Company, Inc.

Cyclones. See Kobayasi, Tatuo: On the mechanism of cyclones and anticyclones.

"Cyclops." The Huff Daland "Cyclops."

Flight, Vol. 19, No. 11 (Mar. 17, 1927), London, p. 158, ill.

Czechoslovakia. Civil aviation in Czechoslovakia.

Flight, Vol. 19, No. 5! (Dec. 22, 1927), London, p. 870, map, chart.

- See Avia: La technique des avions tchécoslovaques "Avia."

- See Walter: Une visite chez Walter. La construction des moteurs »

refroidis par l'air en tchécoslovaquie.

D

D'Aponte, Alberto. Principali problemi organici risolti dal nuovo ordinamento del R. Esercito.

Rivista Aeronautica, Anno 3, N. 2 (Feb. 1927), Roma, pp. 49-63.

Damblanc, Louis. Du moteur d'aviation au moteur d'automobile. L'Aérophile, 35« année, Nos. 5-6 (l«>r-15 mars 1927), Paris, pp. 67-70, ill.

Dantin, C. Les phares à très longue portée.

Génie Civil, T. 90, No. 14 (2 avril 1927), Paris, pp. 329-331, ill.

Dargue, H. A. How Latin America looks from the air; Pan American good will flight.

National Geographic Magazine, Vol. 52 (Oct. 1927), Washington, D. C, pp. 451-502, ill., map.

Literary Digest, Vol. 95 (Nov. 5, 1927), New York, pp. 38-52.

Darrow, F. L. In the air.

St. Nicholas, Vol. 54 (Aug. 1927), New York, p. 810.

Davenport, W. For landing's sake.

Collier's, Vol. 80 (Nov. 5, 1927), Springfield, Ohio, pp. 8-9, ill., diagr.

Davies, H., and F. B. Bradfield. Wind tunnel test of aerofoil M.2.

Aeronautical Research Committee, Reports and Memoranda, No. 1070 (Ae. 252), Oct., 1926, London, 1927, pp. 5, tabls., diagr.

Davies, H. Wind tunnel tests of aerofoil R. A. F. 34.

Aeronautical Research Committee, Reports and Memoranda, No. 1071 (Ae. 253), Oct. 1926, London, 1927, pp. 5, tabls., diagr.

- See Hartshorn, A. S., and H. Davies: Test of two aerofoils, R. A. F. 27

and R. A. F. 28.

Davis, M. W. Scheme for a flying-field.

Outlook, Vol. 146 (Aug. 10, 1927), New York, p. 468, ill.

Davis, W. Transoceanic aviation.

Current History Magazine of N. Y. Times, Vol. 26 (Aug. 1927), New York, pp. 775-776.

Davis, Warren Jefferson. Air-traveled Germany.

Saturday Evening Post, Vol. 200 (Nov. 19, 1927), Philadelphia, pp. 28-29, ill.

- Clearing the air for commerce.

Annals, American Academy Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 141-150.

- The world's wings.

New York, London, Simmons-Boardman Publishing Company, 1927, pp. xvii, 210, 111.

Davison, F. Trubee. Conditions in Army Air Corps today.

U. S. Air Services, Vol. 12, No. 5 (May 1927), Washington, D. C, p. 36.

- Good news for reserve fliers.

Aero Digest, Vol. 11, No. 5 (Nov. 1927) New York, p. 509, ill.

- The place Wright Field fills.

Slipstream, Vol. 8, No. 10 (Oct. 1927), Dayton, Ohio, pp. 21-22.

Dayton. Dayton is now undisputed air center.

Slipstream, Vol. 8, No. 2 (Feb. 1927), Dayton, Ohio, p. 13, ill.

- Dayton lays plans for new airport.

Slipstream, Vol. 8, No. 9 (Sept. 1927), Dayton, Ohio, p. 54, diagr.

DeFoe, George L. See Higgins, George J., W. S. Diehl, and George L. DeFoe: Tests on models of three British airplanes in the variable density wind tunnel.

De Havilland. The De Havilland differential aileron.

Aeroplane, Vol. 32, No. 26 (June 29, 1927), London, pp. 774-778, ill., diagr. 6333—28-4

De Havilland. The De Havilland 61.

Flight, Vol. 19, No. 52 (Dec. 29, 1927), London, pp. 878-880, ill., diagr.

- The De Havilland "Tiger Moth."

Flight, Vol. 19, No. 38 (Sept. 22, 1927), London, pp. 665-668, ill., diagr.

- The De Havilland "Tiger Moth". A low wing monoplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 57, Washington, October 1927, pp. 6, ill. From "Flight," September 22, 1927.

- The De Havilland "Tiger Moth" racing airplane.

Aero Digest, Vol. 11, No. 4 (Oct. 1927), New York, p. 430, ill., diagr.

- The D. H. "Tiger Moth."

Aviation, Vol. 23, No. 25 (Dec. 19, 1927), New York, pp. 1472-1473. ill., diagr.

- DH Type 66 Hercules.

Aero Digest, Vo. 10, No. 1 (Jan. 1927), New York, p. 40, ill.

- For Colonial air transport, Canberra.

Aeroplane, Vol. 33, No. 26 (Dec. 28, 1927), London, pp. 844, 846, ill.

- The new De Havilland aeroplane.

Flight, Vol. 19, No. 44 (Nov. 3, 1927), London, p. 759, diagr.

D'Orcy, Ladislas. Paris holds tenth aero exposition.

Aviation, Vol. 22, No. 2 (Jan. 10, 1927), New York, pp. 81-89, ill.

De Pinedo. Another Fascist triumph.

Aero Digest, Vol. 10, No. 4 (Apr. 1927), New York, p. 275, ill., map.

- De Pinedo's vlucht naar Amerika.

Het Vliegveld, 11 de Jaarg., No. 3 (Maart 1927), Amsterdam, pp. 94-96, ill.

De Pinedo, Francesco. La crociera Atlantica di De Pinedo.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Voi. 7, N. 3 (Marzo 1927), Pisa, pp. 125-126.

- Commander de Pinedo welcomed by aircraft industry in New York.

Aviation, Vol. 22, No. 19 (May 9, 1927), New York, p. 978, ill.

- La crociera aerea dell' Atlantico.

L'Aerotecnica, Vol. 7 (Anno 5), N. 2 (Feb. 1927), Pisa, pp. 61-79, ill., map.

- Il grandioso volo del Comandante De Pinedo felicemente compiuto.

L'Aerotecnica, Voi. 7 (Anno 5), N. 6 (Giugno 1927), Pisa, pp. 324-326.

--Italian aviator flying to four continents.

U. S. Air Services, Vol. 12, No. 3 (Mar. 1927), Washington, D. C, pp. 12.

- Italy's famous long-distance pilot.

Aviation, Vol. 22, No. 14 (Apr. 4, 1927), New York, pp. 675-677, ill., map.

- Pinedo back in Rome. Successful conclusion to 25,000 mile flight.

Flight, Vol. 19, No. 25 (June 23, 1927), London, pp. 413-114, ill., map.

- Pinedo's big flight. Two Atlantic crossings in 25,000-mile attempt.

Flight, Vol. 19, No. 7 (Feb. 17, 1927), London, p. 87, map.

- Le retour triomphal de Pinedo.

L'Aéronautique, 9me année, No. 98 (juil. 1927), Paris, p. 209.

- Een vlucht van 550Ö0 K. M. door Markies De Pinedo.

Het Vliegveld, 11 de Jaarg., No. 1, 2 (Jan. Feb. 1927), Amsterdam, pp. 23-26, 73-76, ill.

- Le voyage du colonel de Pinedo.

L'Aérophile, 35e année, Nos. 13-14 (ler-15 juil. 1927), Paris, p. 213, ill.

- When a flock of condors imperilled De Pinedo.

Literary Digest, Vol. 94 (July 2, 1927), New York, pp. 52-55, ill.

- See Atlantic: Les grands raids trans-atlantiques.

De Pinedo, Francesco. See Beltrami, G. M.: La transvolata Atlantica di de Pinedo.

- See Pistolesi, Enrico: Lindberg, Bellanca, Chamberlain, De Pinedo.

- See Scaroni, Silvio: Colonel De Pinedo's long list of achievements.

- See Santa Maria: II volo del "Santa Maria". DalP America latina all'

America anglosassone.

*

Decalage. See Mock, Richard M.: The distribution of loads between the wings of a biplane having decalage.

Deeds, C. W. Modern air-cooled motors in commercial service. Slipstream, Vol. 8, No. 10 (Oct. 1927), Dayton, Ohio, pp. 36-37, ill.

Deeley, R. Motjntford. See Archbutt, Leonard, and R. Mountford Deeley: Lubrication and lubricants: A treatise on the theory and practice of lubrication, and on the nature, properties, and testing of lubricants.

Dellinger, J. H. Application of radio in air navigation.

Mechanical Engineering, Vol. 49, No. 1 (Jan. 1927), New York, pp. 29-32, ill.

Demotjgeot, Louis. See Blanchet, Georges: Louis Demougeot.

Demuyter, Ernest. Thirty-one hours in a balloon.

Aero Digest, Vol. 11, No. 4 (Oct. 1927), New York, pp. 392-393, 488, ill.

Department of the Navy. Bureau of aeronautics.

Department of Commerce, Standards Yearbook 1927, compiled by the National Bureau of Standards, Miscellaneous Publications No. 77, Washington, Government Printing Office, 1927, pp. 80-81.

DePort, Theo. Aerodynamical balance for P-1B and P-5 airplanes by standard analytical method for determination of center of gravity and mean average chord.

Air Corps Information Circular, Vol. 6, No. 593 (Sept. 15,1927), Washington, pp. 3, diagr.

Design. Curtiss Company awarded- design competition for Navy training plane.

U. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. C, p. 32.

- Detail design and maintenance troubles.

Aeroplane, Vol. 33, No. 3 (July 20, 1927), London, p. 104.

- National tendencies in airplane design.

Literary Digest, Vol. 94 (Aug. 27, 1927), New York, pp. 21-22, ill.

- The Navy calls for airship designs. Designs for two 6,000,000 cu. ft.

rigid airships called for in competition.

Aviation, Vol. 22, No. 5 (Ian. 21, 1927), New York, p. 230.

- Some notes on the design of commercial aircraft from the operational

point of view.

Flight, Vol. 19, No. 8 (Feb. 24, 1927), London, pp. 101-102.

- See Clark, V. E.: Apparent present tendencies in airplane design.

- See Mayo, R. H.: Some notes on the design of commercial aircraft from

the operational point of view.

- See Wilson, E. E.: Design reactions from the Spokane pursuit races.

Detonation. See Pistolesi, Enrico: II problema della "detonazione" nei motori a scoppio.

Detroit. Pride of Detroit.

Popular Aviation, Vol. 1, No. 4 (Nov. 1927), Chicago, pp. 19-20, ill.

Deutschen Versuchsanstalt für Luftfahrt. Jahrbuch 1926 der Deutschen Versuchsanstalt für Luftfahrt. München, R. Oldenbourg.

Di Nola, A. Importanza della medicina nelPaviazione ed organizzazione del servizio sanitario aeronautico.

Revista Aeronautica, Anno 3, N. 9 (Set. 1927), Roma, pp. 20-27.

Diaphragm metals. See Henrickson, H. B.: Tension experiments on diaphragm metals.

Dictionary. A dictionary of aviation.

Popular Aviation, Vol. 1, No. 1 (Aug. 1927), Chicago, pp. 46-49.

Diehl, W. S. See Higgins, George J., W. S. Diehl, and'George L. DeFoe: Tests on models of three British airplanes in the variable density wind tunnel.

Diemer, F. Z. Flugboot im Seegang.

Die Luftwacht, Heft 10, Okt. 1927, Berlin, p. 584.

Diesel engines. See Bielefeld, F. Ernst: Recent suggestions in diesel-engine construction.

Dietz, Paul. Operations of Hamburg air harbor.

Aero Digest, Vol. 10, No. 2 (Feb. 1927), New York, pp. 92-93, 153, ill.

Dill, C. C. Traffic cop for the air.

Review of Reviews, Vol. 75 (Feb. 1927), New York, pp. 181-184.

Dillenz, Lilli. See Elder, Ruth: Women flyers meet at sea.

Dines, L. H. G. Dynamics of whirlwinds.

Nature, Vol. 120, No. 3C33 (Dec. 17, 1927), London, p. 878.

Dinger, H. C. Die Entwicklung der luftgekühlten Wright-Flugmotoren. Die Luftwacht, Heft 4, Aprü 1927, Berlin, pp. 213-217, ill.

Distance. On long distance flying.

Aeroplane, Vol. 32, No. 5 (Feb. 2,1927), London, pp. 109-112.

Distinguished Flying Cross. The Distinguished Flying Cross.

Aviation, Vol. 23, No. 6 (Aug. 8, 1927), New York, p. 312.

Dix, jr., E. H. " Alclad" a new corrosion resistant aluminum product.

National Advisory Committee for Aeronautics, Technical Notes No. 259, Washington, August 1927, pp. 13, ill.

Dockray, A. H. Experiences of a pictorialist in the air.

Photo-Era, Vol. 59 (July 1927), Wolfeboro, N. H., pp. 15-19, ill.

Dole derby. Descriptions of the Dole derby planes.

Aviation, Vol. 23, No. 8 (Aug. 22, 1927), New York, pp. 414-417, 422, ill.

- The Dole Pacific race.

Aero Digest, Vol. 11, No. 3 (Sept. 1927), New York, pp. 250-254, 366, ill.

- Travel air "Woolaroe" wins Dole derby.

Aviation, Vol. 23, No 9 (Aug. 29, 1927), New York, pp. 466-457, ill.

- See Woolaroe: Woolaroe wins Dole race.

Dollfus, Charles. L'exposition et le meeting de Copenhague. L'Aéronautique, 9me année, No. 101 (oct. 1927), Paris, 305-306, ill.

- La sécurité en ballon libre.

L'Aéronautique, 9me année, No. 101 (oct. 1927), Paris, pp. 311-312.

- See Hirschauer, L., and Ch. Dollfus: L'année aéronautique 1926-1927.

8e année.

Dopes. See Britton, H. T. S.: Aero dopes and varnishes.

Dorand. Le réglage automatique du couple des moteurs surcomprimés.

La Technique Aéronautique, 18e année, n. s. No. 67 (15 mai 1927), Paris, pp. 130-144, ill., diagrs.

Dordilly. La mesure de la dérive dans le voyage Paris-Omsk-Paris. L'Aéronautique, 9me année, No. 93 (fév. 1927), Paris, pp. 53-54.

Dornier. The "Dornier Mercury" commercial airplane with B. M. W. VI 600 HP. engine.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 30, Washington, January 1927, pp. 10, ill.

- Dornier "Superwal. "

Aero Digest, Vol. 10, No. 1 (Jan. 1927), New York, p. 38, ill.

- Dornier "Superwal" commercial seaplane Two Rolls-Royce "Condor,"

650 HP. engines.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 31, Washington, February 1927, pp. 7, ill.

- See Mittelholzer : Mittelholzer's flight through Africa in a Dornier "Merkur" airplane.

Douglas. Douglas aerial trucks do variety of work in every service. Slipstream, Vol. 8, No. 5 (May 1927), Dayton, Ohio, pp. 13-14, ill.

- Douglas all-metal twin-engined bomber. T-2-D-1.

U. S. Air Services, Vol. 12, No. 3 (Mar. 1927), Washington, D. C, p. 25, ill.

- The Douglas T2D-1.

Aviation, Vol. 23, No. 21 (Nov. 21, 1927), New York, p. 1246, ill.

Douglas, G. P., F. B. Bradfield, and A. S. Hartshorn. The lateral control of a biplane by combined use of ailerons and varying leading edge slots.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 350-363, diagr., tabls.

Douglas, G. P., and L. P. Coombes. The measurement of torque grading along an airscrew blade.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 526-536, diagr., tabls.

Douglas, G. P., and W. G. A. Perring. Wind tunnel tests with high tip speed airscrews. The characteristics of a bi-convex aerofoil at high speeds.

Aeronautical Research Committee, Reports and Memoranda, No. 1091 (Ae. 270), Feb., 1927, London, 1927, pp. 21, tabls., diagr.

- Wind tunnel tests with high tip speed airscrews. The characteristics

of the aerofoil section R. A. F. 31a at high speeds.

Aeronautical Research Committee, Reports and Memoranda, No. 1086 (Ae. 265), Jan., 1927, London, 1927, pp. 33, tabls., diagr.

Douglas, G. P. See Perring, W. G. A., and G. P. Douglas: Wind tunnel experiments on the effect on the maximum lift of withdrawing and discharging air from the upper surface of an aerofoil.

Douhet, Giulio. II domininio dell 'aria. ^

Roma, Carlo De Albert edit., 1927.

Dowty, G. H. Wheel brakes and their application to aircraft.

Aircraft Engineer suppl. to Flight, Vol. 19, Nos. 47, 52 (Nov. 24, Dec. 29, 1927), London, pp. 810d-810f, 880a-880d.

Drag. See Ackeret, J.: Drag measurements on two wing sections at different index values.

- See Wei dinger, Hanns: Drag measurements on a Junkers wing section.

- See Zahm, Albert Francis: Flow and drag formulas for simple quadrics.

"Dragon Fly." Dragon fly monoplane.

Aero Digest, Vol. 11, No. 6 (Dec. 1927), New York, p. 688, diagr.

Driggs. The new Driggs Dart now in production.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, pp. 182, ill.

- The new 40 h. p. Driggs Dart II.

Aero Degest, Vol. 10, No. 6 (June 1927), New York, p. 580, ill.

Driggs, Ivan H. A simple theoretical method of analyzing and predicting airplane performance.

Aircraft Engineer suppl. to Flight, Vol. 19, Nos. 34, 38, 43 (Aug. 25, Sept. 22, Oct. 27, 1927), London, pp. 596a-596d, 668d-668f, 750a-750b.

Driggs, Laurence La Tourette. Frank Luke, the balloon strafer.

U. S. Air Services, Vol. 12, Nos. 3-4 (Mar.-Apr., 1927), Washington, D. C, pp. 38-44,45-48, ill.

- Heroes of aviation.

Boston, Little, Brown, and Company, 1927, pp. xxvi, 346, ill.

Driggs Aircraft Corporation. Driggs Aircraft Corporation designs new plane.

Aviation, Vol. 23, No. 2 (July 11,1927), New York, p. 87, ill. Driggs Dart.

Dryden, H. L. See Briggs, Lyman James, and H. L. Dryden: Pressure distribution over airfoils at high speeds.

Ducout, Marcel. Caractéristiques comparées des avions commerciaux en service sur les lignes française et allemandes.

L'Aérophile, 35e année, Nos. 1-2 (ler-15 jan. 1927), Paris, pp. 17-19, ill.

- La liaison France-Madagascar.

I/Aérophile, 35e année, Nos. 3-4 (ler-15 fév. 1927), Paris, pp. 35-37, ill., map.

- Le rallye ballons féminin et le concours d'atterrissage de l'Aéro-Club.

L'Aérophile, 35e année, Nos. 11-12 (ler-15 juin 1927), Paris, pp. 177-179, ill.

- Le réseau intérieur est-il souhaitable?

L'Aérophile, 35e année, Nos. 7-8, 9-10, 13-14 (ler-15 avril, ler-15 mai, ler-15 juil. 1927), Paris, pp. 100, 131-132, 210.

- La tentative de Nungesser et Coli.

L'Aérophile, 35e année, Nos. 11-12 (ler-15 juin 1927), Paris, pp. 171-174, ill.

Duke, Donald. Are we airworthy?

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, pp. 514, 622.

Annals, American Academy of Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 151-158, ill.

- Airports and airways, cost, operation and maintenance.

New York, The Ronald Press Company, 1927, pp. xii, 178, ill., maps, diagrs.

- Mean weather conditions.

Slipstream, Vol. 8, No. 1 (Jan. 1927), Dayton, Ohio, p. 20, diagr.

Dumanois, E. Au sujet der carburants peu inflammables.

L'Aérophile, 35e année, Nos. 7-8 (ler-15 avril 1927), Paris, pp. 110-111, port.

Dumanois, P. Au sujet des combustibles d'aviation.

La Technique Aéronautique, 18e année, n. s. No. 66 (15 avril 1927), Paris, pp. 105-109.

Dumanois et Ceccaldi. L'appareil de chronométrage automatique Dumanois Ceccaldi.

L'Aérophile, 35e année, Nos. 19-20 (ler-15 oct. 1927), Paris, pp. 311-313, ill.

Dumesil, Jacque Louis. See Toulmin, Harry Aubrey: Air service, American expeditionary force, 1918 . . . with an introduction by Jacque Louis Dumesil.

Duncan, W. J. On a modification of the Chattock gauge, designed to eliminate the change of the zero with temperature.

Aeronautical Research Committee, Reportsand Memoranda, No. 1069 (Ae. 251), Dec, 1926, London, 1927, pp. 5, diagr.

Dunlap, D. Earl. The Johnson twin-6 airplane.

Aero Digest, Vol. 10, No. 1 (Jan. 1927) New York, pp. 14-15, ill., diagr.

- The Johnson twin-60.

Slipstream, Vol. 8, No. 1 (Jan. 1927), Dayton, Ohio, pp. 22-24, ill., diagr.

- Public will use safe aircraft.

Slipstream, Vol. 8, No. 4 (Apr. 1927), Dayton, Ohio, pp. 9-10, ill.

Dunlap, O. E. Why fly without radio?

Scient. Amer., Vol. 137 (Sept. 1927), New York, pp. 226-228, ill.

Dupont. Sur la multiplicité des solutions en aérodynamique.

La Technique Aéronautique, 18e année, n. s. No. 63 (15 jan. 1927), Paris, pp. 19-24, ill.

Dupont, M. Multiplicity of solutions in aerodynamics.

National Advisory Committee for Aeronautics, Technical Memorandums No. 413, May 1927, Washington, pp. 34, ill., diagrs. From "I/a Technique Aéronautique" December 15, 1926, and January 15, 1927.

Dupont, P. Application des tourbillons conjugués à l'aérodynamique du cercle et des profils.

C. R. Acad. Sei., T. 184, No. 5 (31 jan. 1927), Paris, pp. 274-276.

- Calcul des forces de flottement sur les profils d'ailes.

C. R. Acad. Soi., T. 184, No. 7 (14 fév. 1927), Paris, pp. 369-371.

- Sur la confrontation des théories aérodynamiques modernes avec les lois

de la mécanique rationnelle.

L'Aérophile, 35e année, Nos. 13-14 (ler-15 juil. 1927), Paris, pp. 218-219.

Duralumin. Le procédé Bengough pour la protection des surfaces en duralumin.

L'Aéronautique, (L'Aérotechnique, 5e année, No. 51), 9me année, No. 94 (mars 1927), Paris, p. 81.

- La résistance du duralumin à la corrosion.

L'Aéronautique, (L'Aérotechnique, 5e année, No. 51), 9me année, No. 94 (mars 1927), Paris, pp. 80-81, ill.

- See Iesman, J. W.: A new rivet for aircraft construction.

- See Nelson, William: Duralumin and its corrosion.

- See Nelson, William: Duralumin—defects and failures.

- See Nelson, William: Duralumin welding.

- See Nelson, William: The heat treatment of duralumin.

- See Nelson, William: The protection of duralumin from corrosion.

Duration. Le record de durée en avion est porté à 51 heures. L'Aéronautique, 9me année, No. 56 (mai 1927), Paris, p. 137.

Duston, F. C. The Wright Whirlwind Engine.

Machinery, Vol. 33, No. 11, 12 (July, Aug. 1927), New York, pp. 80.5-810, 917-922, ill.

Duval. L'aménagement des aérodromes.

La Technique Aéronautique, 18e année, n. s. No. 66 (15 mars 1927), Paris, pp. 75-76.

Dycer. The Dycer sportplane.

Aviation, Vol. 22, No. 6 (Feb. 7,1927), New York, pp. 282-284. ill.

Dyle and Bacalan. Dyle and Bacalan metal monoplane, D. B. 10. Night bomber.

National Advisory Committee for Aeronautics, aircraft Circulars^No. 27,^:Washington, January 1927. pp. 6, ill.

Dynamometer. See Hellyer, F. E.: A new type of combined airscrew hub dynamometer and thrust meter.

Ë

Eaglerock. The Eaglerock seaplane.

\ero Digest, Vol. 11, No. 6 (Dec. 1927), New York, p. 698, ill.

- The home of the Eaglerock.

Aero Digest, Vol. 10, No. 2 (Feb. 1927), New York, pp. 104, 111, ill.

- Improved Eaglerock.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, p. 70, ill.

Earth indicator compass. The Pioneer earth indicator compass. Flight, Vol. 19, No. 31 (Aug. 4,1927), London, pp. 534-535, diagr.

Earth inductor compass. See Colvin, Charles H.: The Pioneer earth inductor compass.

- See Compass: The Pioneer earth inductor compass.

- See Goldsborough, Brice: The earth inductor compass.

- See Pioneer Instrument Co.: Le compas Pioneer.

Easterwood. The Easterwood Dallas-Hong Kong prize.

Aviation, Vol. 23, No. 1 (July 4, 1927), New York, pp. 24-25, map.

Eaton, H. N. See Strother, D. H., and H. N. Eaton: A superheat meter or differential thermometer for airships.

Eberhart. Eberhart "Comanche."

Aero Digest, Vol. 10, No. 4 (Apr. 1927), New York, p. 298, ill.

Eberhardt, C. Einführung in die theoretische Aerodynamik. München und Berlin, Verlag R. Oldenbourg, 1927, pp. vi, 138.

Ebner, Alfred. Unsere "Flugfreiheit" im besetzten Gebiet. Die Luftwacht, Heft 7, Juli 1927, Berlin, pp. 393-395.

Eclipse. See Boothby, F. L. M.: The recent eclipse as seen from a balloon.

- See Starters: Eclipse starters.

Economy. See Bruner, S.-G.: Considération sur le vol économique des avions.

Edwards, A. J. The plane Colonel Lindbergh used.

Slipstream, Vol. 8, No. 7 (July 1927), Dayton, Ohio, pp. 13-14, ill., diagr.

Edwards, Ivo, Arthye Exley, and F. Tymms. Commercial air transport; with a foreword by Sir Sefton Brancker.

London, Sir Isaac Pitman and sons, pp. xv, 163,16.

Edzard et Risticz. L'Allemagne reprend les records du monde de durée et de distance en circuit.

L'Aéronautique, 9me année, No. 100 (sept. 1927), Paris, p. 275, ill.

Egerton, A., and S. F. Gates. Summary by the secretary engine subcommittee of a "Report on Anti-Knock investigations."

Aeronautical Research Committee, Reports and Memoranda, No. 1079 (E. 24), Dec, 1926, London, 1927, pp. 13, diagr.

Elastic limit. See Welter, G.: Beitrag zum Preisausschreiben der Wissenschaftlichen Gesellschaft für Luftfahrt E. V. Kennwort: Die Elastizitätsgrenze.

Elder, Ruth. The American girl.

Aero Digest, Vol. 11, Jo. 5 (Nov. 1927), New York, pp. 515, 612, ill.

- Ruth Elder's ocean flight.

Literary Digest, Vol. 95 (Oct. 22, 1927), New York, p. 9, ill.

Elder, Ruth. Le vol dramatique de Miss Ruth Elder et de Haldeman. L'Aérophile, 35e année, Nos. 21-22 fler-15 nov. 1927), Paris, pp. 338-339, ill.

- Women flyers meet, at sea.

Popular Aviation, Vol. 1, No. 5 (Dec. 1927), Chicago, pp. 11-12, ill.

- See New York to Paris: Trans-Atlantic plane forced down 325 mi. from

the Azores.

Elias. Elias Company builds new commercial plane. "Airmobile." Aviation, Vol. 22, No. 23 (June 6, 1927). New York, pp. 1222-1223, ill.

Eliott-Lynn, Sophie C. Mrs. Eliott-Lynn pilots Avro Avian to height of 19,200 feet.

Aviation, Vol. 23, No. 19 (Nov. 7, 1927), New York, p. 1122, ill.

- Mrs. Eliott-Lynn's altitude record.

Flight, Vol. 19, No. 21 (May 26, 1927), London, p. 336, ill.

- Private flying in Africa.

Flight, Vol. 19, No. 22 (June 2, 1927), London, pp. 354-355, ill.

- The Zurich international flying meeting.

Flight, Vol. 19, No. 35 (Sept. 1, 1927), London, pp. 608-616, ill.

Elling, I. Lost fliers, Nungesser and Coli.

Literary Digest, Vol. 94 (July 16, 1927), New York, p. 32.

Ellsworth, Lincoln. See Amundsen, Roald Engelbregt Gravning, and Lincoln Ellsworth: The first flight across the polar sea.

Elst, F. v. d. Burgerlijke luchtvaart in Nederlandsch-Indië.

Het Vliegveld, Ilde Jaarg., No. 5 (Mei 1927), Amsterdam, pp. 157-160.

Emde, F. Bericht über die Äusserungen zu dem Entwurf XX.

Zetisehr. Flugt. Motorluftschr., 18. Jahrg., 14. Heft (28. Juli 1927), München, pp. 324-325.

Emerson, C. M. Aerial surveying as applied to tax equalization. American City, Vol. 36 (Apr. 1927), New York, pp. 522-524, ill.

Empennages. See Seiferth, R.: Experiments with three horizontal empennages.

Empson, R. H. W. The history of the East church Air Station, Sheppey, 19091926.

Eastehurch, Kent, 1927.

Engine recorders. Engine revolution recorder for aeroplanes.

Engineering, Vol. 124, No. 3212 (Aug. 5, 1927), London, pp. 168-169, ill.

Engineering. See Pierson, R. K.: The constructional engineering of aircraft.

-- See Watter, Michael: Engineering in aircraft.

Engines. The "Ajax" and "Atlas" engines.

Aviation, Vol. 23, No. 23 (Dec. 5, 1927), New York, pp. 1351-1352, il.

- British aero engines.

Flight, Vol. 19, No. 10 (Mar. 10,1927), London, pp. 147-148, ill.

- Deux moteurs de conception nouvelle. Le moteur Fairchild Caminez

140 H. P. Le moteur Caffort 550 cv.

L'Aérophile, 35e année, Nos. 17-18 (ler-15 sept. 1927), Paris, pp. 279-281, ill.

- Development of the Cam type aviation engine.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, pp. 158, 160, ill.

- Dispositifs de suralimentation pour moteurs d'aviation.

L'Aéronautique, (L'Aérotechnique, 5e année, No. 52), 9e année, No. 95 (avril 1927), Paris, pp. 109-112, ill.

- Engine troubles in air-line service.

Aeroplane, Vol. 33, No. 5 (Aug. 3, 1927), London, p. 186.

Engines. Engines at the Paris aero show.

Aviation, Vol. 22, No. 3 (Jan. 17, 1927), New York, pp. 122-129, ill.

- French airplane engine failures analyzed to find causes.

Automotive Industries, Vol. 56, No. 23 (June 11, 1927), New York, pp. 898-900.

- Great improvements shown in engines.

U. S. Air Services, Vol. 12, No. 1 (Jan. 1927), Washington, D. C, pp. 44, 46.

- The high-speed compression-ignition engine.

Flight, Vol. 19, No. 44 (Nov. 3, 1927), London, p. 770.

- Modern engines in civil aviation.

Aviation, Vol. 22, No. 1 (Jan. 3, 1927), New York, p. 13.

- Les moteurs au Xe Salon de l'Aviation.

L'Aéronautique, (L'Aérotechnique, 5e année, No. 49), 9me année, No. 92 (jan. 1927), Paris, pp. 11-21, ill.

- Navy rejoices at great success of air-cooled engines which it sponsored.

U. S. Air Services, Vol. 12, No. 8 (Aug. 1927), Washington, D. C, pp. 48, 50.

- Nouveaux moteurs démultipliés.

L'Aéronautique, 9me année, No. 101 (oct. 1927), Paris, pp. 327-328, ill.

- Pratt and Whitney air-cooled engines.

Aeroplane, Vol. 32, No. 6 (Feb. 9,1927), London, pp. 152-154, ill.

- Quelques accessoires de moteur exposés au dernier Salon.

L'Aéronautique, (L'Aérotechnique, 5e année, No. 50), 9me année, No. 93 (fév. 1927), Paris, pp. 45-47, ill.

- Twelve-cylinder 600-hp. aeroplane engine.

Engineering, Vol. 123, No. 3193 (Mar. 25, 1927), London, pp. 350-352, ill.

- See Anzani: The Anzani sport motors.

- See Bielefeld, F. Ernst: Recent suggestions in diesel-engine construction.

- See Beardmore: The first British inverted engine. Typhoon.

- See Beardmore: Le moteur Beardmore "Typhoon."

- See Beardsley, E. G.: Some factors affecting the reproducibility of penetration and the cut-off of oil sprays for fuel injection engines.

-- See Beatty, Lee M.: Wright Whirlwind engine production.

- See Berreur, A. : Un moteur à explosion de l'avenir.

- See Bristol: The Bristol-Cherub aero engine.

- See Brown, George Granger: The relation of motor fuel characteristics to

engine performance.

- See Callendar, H. L., R. O. King, and C. J. Sims: Report on dopes and

detonation.

- See Cam engine: Cam engine passes fifty hour test.

- See Cam engine: The new Cam engine.

- See Capetti, Antonio: Primo congresso del motore a scoppio (Padova,

16-17 Giugno 1927).

- See Cappa: Le moteur Cappa 18.

- See Carter, B. C: Dynamic forces in aircraft engines (torsional vibration).

- See Damblanc, Louis: Du moteur d'aviation au moteur d'automobile.

- See Deeds, C. W.: Modern air cooled motors in commercial service.

- See Dinger, H. C: Die Entwicklung der luftgekühlten Wright-Flugmotoren.

Engines. See Duston, F. C. : The Wright Whirlwind engine.

- See Fair child: Fuel tests on the Fair child cam engine.

- See Fairchild: Le moteur à came Fairchild-Caminez.

- See Farman: Une formule nouvelle de moteur d'aviation. Le Farman

inversé 500-700 HP.

- See Farman: Le moteur Farman inversé 550-700 cv,

- See Fedden, A. H. R.: The supercharging of aircraft and motor-vehicle

engines.

- See Fenning, R. W.: Closed vessel explosions of mixtures of air and

liquid fuel (petrol, hexane, and benzene) over a wide range of mixture strength, initial temperature and initial pressure.

- See Fenning, R. W;*. VIII. Gaseous combustion at medium pressures.

Part I. Carbon monoxide-air explosions in a closed vessel. Part II. Methane-air explosions in a closed vessel.

- See Fenning, R. W.: Note on "Detonation" temperatures in closed

vessel explosions.

- See Fiat: De Fiat as 2 motor.

- See France: Neuere Flugmotoren in Frankreich. (Lorraine, Farman.)

- See Gallina, Vitale Giovanni: Il primo Congresso Internazionale del

Motore a Scoppio. Ptoblemi—Tendenze—Risultati.

- See Gardiner, Arthur W., and Oscar W. Schey: The comparative performance of an aviation engine at normal and high inlet air temperatures.

- See Gardiner, Arthur W., and William E. Whedon: The relative performance obtained with several methods of control of an overcompressed engine using gasoline.

- See Gilman, N. H.: The air cooled Liberty engine.

- See Goldingham, A. H.: Diesel engines (marine and stationery).

- See Gosslau, F.: Die Flugmotoren auf der 10. Pariser Luftfahrt-Ausstellung.

- See Gove, W. D., and M. W. Green: The direct measurement of engine

power on an Airplane in flight with a hub type dynamometer.

- See Graffigny, H. de: Les moteurs de demain—pétrole, vapeur, électricité,

gaz liquéfies, explosifs.

- See Hausfelder, Ludwig: High-speed oil engines for vehicles. Engines

with external atomization of the fuel. Engines with internal atomization of the fuel. Hot-bulb engines. Diesel engines.

- See Hausfelder, Ludwig: High-speed oil engines for vehicles. Part II.

- See Hisso engine: Ye good old Hisso.

- See Italy: Italian aircraft engines.

- See Kinner: The Kinner five cylinder air cooled engine.

- See Kinner: The new. Kinner engine.

- See Krügner, H.: Motoren für Höhenflugzeuge.

- See Küipers, C. : Lorraine-Dietrich motoren.

Engines. See Kuipers, C: Motoren voor sportvliegtuigen. III.

- See Lawrance, Charles L.: Air cooled engine development.

- See Lorraine: Les nouveaux moteurs Lorraine refroidis par l'air.

- See Lorraine: Les nouveaux moteurs Lorraine 650 HP.

- See Lubrication: Hints on lubrication of Anzani engines.

--See Martinot-Lagarde, C: Documents et données techniques statistique

des causes de pannes de moteur et améliorations à apporter aux groupes motopropulseurs.

- See Marvin, Charles F., jr.: Combustion time in the engine cylinder and

its effect on engine performance.

- See M oiler, W.: Der Flugmotor.

- See Morris, J.: Dynamical forces in aircraft engines. Some observations

on Major Carter's paper.

- See Mucklow, G. F.: The effect of reduced intake-air pressure and of

hydrogen on the performance of a solid injection oil engine.

- See Napier "Lion": Facts and figures about the Napier "Lion" racing

engine.

--See Packard "X": The new Packard "X" engine.

- See Pistolesi, Enrico: II problema della " detonazione " nei motoria

scoppio.

- See Poincaré, L.: Les appareils utilisés pour les essais des moteurs d'aviation.

- See Poincaré, L.: Le démarrage des moteurs d'aviation.

- See Reyneker, F. H.: De motor, die Lindbergh en Chamberlin over den

Oceaan bracht: De Wright "Whirlwind".

- See Riccardo, H. R.: Some notes on gasoline-engine development.

- See Ryan-Siemens engine: The Ryan-Siemens engine.

- See Sims, C. J., and E. W. J. Mardles: The effect of metallic sols in delaying

detonation in internal combustion engines.

- See Sparrow, S. W., and M. A. Thome: Friction and aviation engines.

- See Sperry, Elmer A: The light supercharged diesel engine for use in air

service.

- See Supercharging: The supercharging of engines.

- See Taylor, P. B.: The carburetor air heater for the Wright Whirlwind

engine.

- See Verduzio, R.: L'installazione più conveniente per i motori laterali

sui velivoli.

- See Walter: Une visite chez Walter. La construction des moteurs refroidis par l'air en tchécoslovaquie.

- See Wasp: The 425 h. p. Pratt and Whitney Wasp engine.

-- See Whirlwind engine: La genèse du moteur de Lindbergh et de Chamberlin, du Lawrence J. 1 au Wright-Whirlwind J. 5.

- See Whirlwind engine: History and development of Wright Whirlwind.

Engines. See Whirlwind engine: Performances of Whirlwind engines.

- See Whirlwind engines: Record of Whirlwind engines during 1926.

- See Whirlwind engine: The Wright Whirlwind J-5C engine.

- See Wilson, E. E.: American aircooled aircraft engines.

England. Aerodromes of England.

Flight, Vol. 19, No. 33 (Aug. 18, 1927), London, pp. 582-583, imp.

- Flying equipment of the British Air Forces.

Flight, Vol. 19, No. 10 (Mar. 10, 1927), London, pp. 136-141, ill.

- See Bülow: Die Angriffe des Bombengeschwaders 3 auf England.

- See Lighting: L'éclairage des terraines et des routes aérriennes en Angle-terre et an Allemagne.

England-India. England to India by air. The first Imperial Air Route successfully inaugurated.

Flight, Vol. 19, No. 2 (Jan. 13, 1927), London, pp. 16-17, map.

Engler, Richard A. Mechanical flight.

St. Albans Gardens, L. i., New York, December, 1927, pp. [2], ill.

English Channel. Famous flights of history. The first Channel air crossing.

Popular Aviation, Vol 1, No. 2 (Sept. 1927), Chicago, pp. 13-15, ill.

Ente. See Focke-Wulf: Flugzeugbeschreibungen. Focke-Wulf F 19 "Ente". Entomology. Collecting insects by airplane.

Aviation, Vol. 22, No. 22 (May 30, 1927), New York, pp. 1173-1174, ill.

Equipment. Équipement du personnel.

L'Aéronautique (L'Aérotechnique, 5e année, No. 54), 9mp année, No. 97 (juinl927), Paris, pp. 183-187, ill.

- The new consolidated instrument board.

Aviation, Vol. 23, No. 15 (Oct. 10, 1927), New York, p. 877.

Eredia, Filippo. Annali dell'ufficio presagi (Ministero dell'aeronautica; aviazione civile e traffico aereo). Vol. 1: Les osservazioni aerologiche e meteorologiche eseguite dal 1911 al 1925 nella stazione aerologica sperimentale di Vigna di Valle (Bracciano, Roma); riunite per cura del prof. Filippo Eredia.

Roma, Provved. gen. Amin. Stato, Libreria (stab, poligr. Amm. Stato), 1927, pp. 103.

- Il nuovo meteorografo dell'Ufficio Presagi.

L'Aerotecnica, Voi. 7 (Anno 5), N. 8 (Sett. 1927), Pisa, pp. 545-548, ill.

- Un nuovo tipo di anemometro.

L'Aerotecnica, Giornale ed Atti dell'Associazione Italiana di Aerotecnica, Voi. 7, N. 3 (Marzo 1927), Pisa, pp. 136-140, ill.

- Sui dispocitivi e sui sistemi adottati nei lanci di palloni sonda.

L'Aerotecnica, Voi. 7 (Anno 5), N. 8 (Sett. 1927), Pisa, pp. 549-554, ill.

Ergebnisse der Aerodynamischen Versuchsanstalt zu Göttingen. Ergebnisse der Aerodynamischen Versuchsanstalt zu Göttingen, Lieferung 1-3; herausgegeben von L. Prandtl und A. Betz.

München und Berlin, R. Oldenbourg, 1923-1927.

Erickson, H. A. Aerial photography.

Aviation, Vol. 23, No. 14 (Oct. 3, 1927), New York, pp. 820-821, ill.

Ermisch, H. Strömungsverlauf und Druckverteilung an Widerstandkörpern in Abhängigkeit von der Kennzahl.

Abhandlungen aus dem Aerodynamischen Institut, Aachen, Heft 6, 1927.

Estimates. The air estimates, 1927-28. A net decrease of £450,000.

Flight, Vol. 19, No. 10 (Mar. 10, 1927), London, pp. 125-128, 149.

- On the air estimates.

Aeroplane, Vol. 32, No. 10 (Mar. 9,1927), London, pp. 246-250.

- See Budget.

Eula, Antonio, e A. Viti. II calcolo delTautonomia degli aeroplani e i recenti voli transoceanici.

L'Aerotecnica, Vol. 7 (Anno 6), N. 10 (Ott. 1927), Pisa, pp. 657-678, diagrs., tables.

Eula, Antonio. Studio sistematico alia vasca di galleggianti a scafo per idrovolanti.

Rendiconti Technici della Direzione Generale del Genio Aeronautico, Anno 15, N. 3 (Luglio 1927), Roma, pp. 33-52, ill., diagrs.

Europe. Seeing Europe from an air liner.

Pop. Mech., Vol. 47 (May 1927), Chicago, pp. 722-732, ill.

- See Thomas, Lowell Jackson: European skyways; the story of a tour of

Europe by airplane.

Evans, E. E. H. The development and the future of the airship.

Journal of the Institution of Aeronautical Engineers, Vol. 1, No. 5 (May 1927), London, pp. 50-53.

Evans, H. B. Wyn. Airships.

Journ. Roy. Aer. Soc, Vol. 31, No. 200 (Aug. 1927), London, pp. 770-785.

Evans, Noel B. Seeing America first on Pacific air transport. Slipstream, Vol. 8, No. 6 (June 1927), Dayton, Ohio, p. 9, ill.

Everling, E., und Horst Muller. Leistungsberechnung von Flugzeugen.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 24. Heft (28. Dez. 1927), München, pp. 561-566, ill.

Everling, E. Slotted-wing airplanes.

National Advisory Committee for Aeronautics, Technical Memorandums No. 432, October 1927, Washington, pp. 10, ill. From "Zeitschrift des Vereines deutscher Ingenieurs" May 7, 1927.

- Spaltflügel-Flugzeuge.

Zeitschr. Ver. deutsch. Ing., Bd. 71, Nr. 19 (7 Mai 1927), Berlin, pp. 645-647, ill.

Ewald, Erich. Das Luftbildwesen auf der Ausstellung der Internationalen Gesellschaft für Photogrammetrie in Charlottenburg.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 8. Heft (28. April 1927), München, pp. 187-195, ill.

Ewijk, L. J. G. van. See Wolff, E. B., en L. J. G. van Ewijk: Mechanical properties of some materials, that are used for the construction of aeroplanes.

Ewing, J. A. Termodinamica tecnica. (Trad. Foä Emanuele). Milano, Casa Editrice Vallardi, 1927, pp. 386.

Exner, Felix. See Clayton, H. Helm: World weather records.

Exports. Exports of aircraft products show substantial increase in 1926. U. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. C, p. 52.

F

F. K. Van achter de coulissen der Noordpoolvaart met het luchtschip "Norge." Het Vliegveld, Ilde Jaarg., No. 1 (Jan. 1927), Amsterdam, pp. 26-30, ill.

Fabrics. See Barr, Guy: Experiments relating to the electrification of balloon fabrics.

- See Barr, Guy, and Isabel H. Hadfield: Some physio-chemical studies on

the effect of sunlight on cotton.

Fabrics. See Clearly, Charles J.: Standard methods of applying fabric to airfoils.

- See Glendinning, W. G.: Report on the use of artificial sources of light as

a substitute in the weathering of fabric.

Fagb, A. An experimental study of the vibrations in the blades and shaft of an airscrew.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 585-600, diagr., tabls.

- The flow of air and of an inviscid fluid around an elliptic cylinder and an

aerofoil of infinite span, especially in the region of the forward stagnation point.

Aeronautical Research Committee, Reports and Memoranda, No. 1097 (Ae. 276), July, 1926, London, 1927, pp. 20, tabls, diagr.

Fage, A., and L. F. G. Simmons. An investigation of the air-flow pattern in the wake of an aerofoil of finite span.

Techn. Rep. Aer. Res. Com., 1925-26, London, His Majesty's Stationery Office, 1927, pp. 195-222, ill., diagr., tabls.

Fage, A., and L. J. Jones. On the drag of an aerofoil for two-dimensional flow.

Techn. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927. pp 223-236, diagr., tabls.

Fage, A., and F. C. Johansen. On the flow of air behind an inclined flat plate of infinite span.

Aeronautical Research Committee, Reports and Memoranda, No. 1104 (Ae 281), Feb., 1927, London, 1927, pp. 26, tabls., ill., diagr.

Fairbanks, Andrew Jason. Distribution of pressure over model of the upper wing and aileron of a Fokker D-VII airplane.

National Advisory Committee for Aeronautics, Report No. 254, March 28, 1927, Washington, Government Printing Office, 1927, pp. 14, ill.

- Pressure distribution tests on PW-9 wing models showing effects of

biplane interference.

National Advisory Committee for Aeronautics, Report No. 271, October 11, 1927, Washington, Government Printing Office, 1927, pp. 13, ill.

Fairchild. Development of the Fairchild Company.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, p. 154, ill.

- The Fairchild aerial camera type K8.

Aeroplane, Vol. 33, No. 1 (July 6, 1927), London, p. 48, ill.

- The Fairchild "All purpose" cabin monoplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 58, Washington, October 1927, pp. 7, ill.

- The Fairchild cabin 'monoplane.

Aeroplane, Vol. 33, No. 23 (Dec. 7, 1927), London, pp. 760, 762, diagr. Aviation, Vol. 23, No. 7 (Aug. 15, 1927), New York, pp. 362-364, ill.

- Fairchild Caminez Cam engine makes fuel consumption test.

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, p. 556, ill.

- The Fairchild-Caminez engine.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, p. 164, diagr.

- Fairchild Caminez Engine Corporation offers three prizes.

U. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. C, p. 42.

- Fairchild planes for Curtiss service.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, p. 64, ill.

- Fuel tests on the Fairchild cam engine.

Aviation, Vol. 23, No. 19 (Nov. 7,1927), New York, pp. 1114-1116, ill., chart.

Faircild. Le moteur à came Fairchild-Caminez.

L'Aéronautique, (L'Aérotechnique, 5me année, No. 56), 9me année, No. 99 (août 1927), Paris, pp. 254-255, 111.

- Unorthodox American engine shows remarkable fuel economy.

Flight, Vol. 19, No. 48 (Dec. 1, 1927), London, pp. 821-822, ill.

- See Black, Archibald: Quantity production of Fairchild pontoons.

- See Engines: Deux moteurs de conception nouvelle. Le moteur Fairchild Caminez 140 H. P. Le moteur Caffort 550 cv.

- See Snow, Howard: The Fairchild organization.

- See Snow, Howard: Fairchild spray deflecting pontoons.

Fairchild, Sherman M. Aerial photography.

Annals, American Academy of Political and Social Science, Vol. 13, (May 1927), Philadelphia, pp. 49-55, ill.

- Fairchild methods in airplane production.

Aviation, Vol. 23, No. 11 (Sept. ]2, 1927), New York, pp. 587-590, ill.

Fairey. The Fairey "Fox."

Airways, Vol. 3, No. 7 (Mar. 1927), London, p. 225, ill.

- Fairey metal airscrews in Schneider race.

Flight, Vol. 19, No. 41 (Oct. 20. 1927), London, pp. 735-736, ill.

Fales, E. N., and L. V. Kerber. Tests of pneumatic means for raising airfoil lift and critical angle.

Journ. Soc. Automotive Engineers, Vol. 20, No. 5 (May 1927), New York, pp. 575-581, ill.

Fales, E. N. The wind tunnel and its contribution to aviation.

Aviation, Vol. 2?, No. 18 (Oct. 31, 1927) New York, pp. 1054-1057, ill.

Farman. Une formule nouvelle de moteur d'aviation. Le Farman inversé 500-700 HP.

L'Aéronautique, (L'Aérotechnique, 5e année, No. 55), 9me année, No. 98 (juil. 1927), Paris, pp. 218-221, ill.

- Le moteur Farman inversé 550-700 cv.

L'Aérophile, 35e année, Nos. 19-20 (ler-15 oct. 1927), Paris, pp. 314-316, ill.

- The new Farman type A2 reconnaissance.

Aero Digest, Vol. 10, No. 4 (Apr. 1927), New York, p. 302, ill.

- La préparation technique d'un avion de grand raid.

L'Aéronautique, (L'Aérotechnique, 5e année, No. 59), 9me année, No. 102 (nov. 1927), Paris, pp. 345-349, ill.

Farren, W. S. The articulated connecting rod—an alternative method for finding accelerations.

Journ. Roy. Aer. Soc, Vol. 31, No. 195 (Mar. 1927), London, pp. 234-236, diagr.

- The variation of the performance of an aeroplane with wing loading.

Tech. Rep. Aer. Res. Com., 1925-26, London, His Majesty's Stationery Office, 1927, pp. 489-510, diagr., tabls.

- See Jones, B. Melvill, W. S. Farren and C. E. W. Lockyer: Preliminary

experiments on two-dimensional flow round bodies moving through a stationary fluid.

Fascists. See De Pinedo: Another Fascist triumph.

Faulkner, V. M. See Clarke, T. W. K., and V. M. Faulkner: D. M. Smith's method for the determination of the transverse frequencies of vibration of uniform beams.

Faurote, F. L. Is commercial aviation here?

Outlook, Vol. 147 (Nov. 16, 1927), New York, p. 339, ill.

Fearn, E. J. The articulated connecting rod.

Journ. Roy. Aer. Soc., Vol. 31, No. 194 (Feb. 1927), London, pp. 133-141, diagr.

Fechet, James E. General Fechet to be Chief of Air Corps.

Aviation, Vol. 22, No. 25 (June 20,1927), New York, pp. 1362-1363, ill.

- General Fechet to command 100 planes in maneuvers.

U. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. C, pp. 27-28.

Fedden, A. H. R. The supercharging of aircraft and motor-vehicle engines.

Journ. Roy. Aer. Soc, Vol. 31, No. 202 (Oct. 1927), London, pp. 932-972, ill.

Federal rights. See Rochford, Daniel: State and Federal rights. Massachusetts tests right to refuse to recognize a federal piloting license within its boundaries.

Federation Aéronautique Internationale. XXII6 Conference de la Federation Aéronautique Internationale.

L'Aérophile, 35e année, Nos. 17-18 (ler-15 sept. 1927), Paris, pp. 286-288, ill.

- See Böhm, A. R.: XXII. Konferenz der Federation Aéronautique Internationale in Zurich.

Fenning, R. W. Closed vessel explosions of mixtures of air and liquid fuel (petrol, hexane, and benzene) over a wide range of mixture strength, initial temperature and initial pressure.

Tech. Rep. Aer. Res. Com. 192.5-26, London, Hi* Majesty's Stationery Office, 1927, pp. 691-718, diagr., tabls.

- VIII. Gaseous combustion at medium pressures. Part I. Carbon

monoxide-air explosions in a closed vessel. Part II. Methane-air explosions in a closed vessel.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 666-690, ill., diagr., tabls.

- Note on "Detonation" temperatures in closed vessel explosions.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 719-722, diagr., tabls.

Ferber, Ferdinand. See Hydravion: De baanbrekers der dynamische lucht-vaart X Ferdinand Ferber.

Ferrari, C, e G. Gabrielli. Studio sull'elica autorotante.

L'Aerotecnica, Vol. 7 (Anno 5), N. 8 (Sett, 1927), Pisa, pp. 583-589, ill.

Ferrari, Luigi G. See Guglielmotti, Aldo, e Luigi G, Ferrari: Il calcolo delle ruote degli aeroplani.

- See Guglielmetti, A., e L. Ferrari: Il comportamento statico e dinamico

delle ruote unificate per aeroplano.

Ferrari-Lelli, Francesco. Un tipo di ergoestesiografo utilizzabile per valutare il senso muscolare dei candidati al pilotaggio.

Rivista Aeronautica, Anno 3, N. 1 (Gen. 1927), Roma, pp. 33-40, ill.

Fiat. De Fiat as 2 motor.

Het Vliegveld, Ilde Jaarg., No. 9 (Sept. 1927), Amsterdam, pp. 303-304, ill.

- Fiat C. R. 20 pursuit airplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 43, Washington, May 1927, pp. 6, ill.

--Tra la Fiat e l'aeronautica d'Italia, le pulsanti officine torinesi.

L'Ala d'Italia, Anno 6, N. 4 (5 Aprile 1927), Milano, pp. 134-136, ill.

6333—28-5

Fife, George Buchanan. Lindbergh, the lone eagle, his life and achievements, with a valuable chapter on airplane navigation by Captain Robert Schofield Wood . . . and including a copy of the contents of the book presented to Captain Lindbergh by Secretary of State Kellogg, of world wide congratulations received by the United States Government.

New York, The World Syndicate Co., inc. 1927, pp. 247, ill.

Finat, Maurice. De Paris a Berlin en avionnette.

L'Aérophile, 35e année, Nos. 21-22 (ler-15 nov. 1927), Paris, pp. 331-332, port.

Finland. An air pageant on the ice. Finland's unusual display.

Flight, Vol. 19, No. 17 (Apr. 28, 1927), London, pp. 255-256, ill.

- An air pageant over the ice.

Aeroplane, Vol. 32, No. 17 (Apr. 27, 1927), London, pp. 474-476, ill.

- See Thoret, J.; Les avions qui vont sur skis. Une visite à l'aviation

Finland-aise.—A l'école de l'aéro O. Y.

Fire. See Clerget, P. : Considérations sur les risques d'incendie en vol et à terre.

Firsht, Louis E. America wins Gordon Bennett balloon race.

Aviation, Vol. 23, No. 13 (Sept. 26, 1927), New York, p. 726, ill.

Fixel, Rowland W. The law of aviation.

Albany, N. Y., M. Bender & Company, incorporated, 1927, pp..xv, 403.

Flachsbart, O. Neue Untersuchungen über den Luftwiderstand von Kugeln.

Physikalische Zeitschrift, 28. Jahrg., Leipzig, 1927, pp. 461-469.

Flack, Martin. Man and the machine.

Journ. Roy. Aer. Soc, Vol. 31, No. 197 (May 1927), London, pp. 393-410, diagr.

Flamingo. The "Flamingo" biplane.

Aviation, Vol. 23, No. 19 (Nov. 7, 1927), New York, pp. 1108-1109, ül.

Flap gear. See Tiltman, A. Hessell: Flap gear for airplanes. A new scheme in which variation is automatic.

Flat spins. See Korvin-Kroukovsky, B. V.: Tail spins and flat spins.

Fletcher, A. G. Safe flying in dangerous weather. Air travel has very few storm risks nowdays.

Aero Field, Vol. 1, No. 11 (I-eb. 1927), London, pp. 253, 264.

Fletcher, Gordon. Flying for the fisheries.

Airways, Vol. 3, No. 12 (Aug. 1927), London, pp. 393-395. ill.

Flettner. See Savonius, Sigurd J.: El flügelrotor. Flint, Howard R. The airplane in forestry.

Aviation, Vol. 23, No. 26 (Dec. 26, 1927), New York, pp. 1511-1513, ill.

Flow. See Zahm, Albert Francis: Flow and drag formulas for simple quadrics. Flying. How to get the utmost enjoyment from an airplane flight.

IT. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. C, p. 44.

- If Texas flights occurred in Europe.

U. S. Air Service, Vol. 12, No. 5 (May 1927), Washington, D. C, p. 32.

- Racing death in icy clouds.

Pop. Mech., Vol. 47 (Feb. 1927), Chicago, pp. 213-216, ill.

Flying pay. Comptroller General's decision upset. Flying pay case upheld by Court of Claims.

U. S. Air Service, Vol. 12, No. 1 (Jan. 1927), Washington, D. C, pp. 42-43.

Focke-Wulf. Flugzeugbeschreibungen. Focke-Wulf F 19 "Ente." Die Luftwacht, Heft 10, Okt. 1927, Berlin, pp. 575-578, ill.

Focke-Wulf. The Focke-Wulf "Ente."

Aviation, Vol. 23, No. 20 (Nov. 14, 1927), New York, pp. 1167-1169, ill.

- The Focke-Wulf "F-19."

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, p. 552, ill.

- The Focke Wulf F. 19 "Ente." Tail-first airplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 59, Washington, October 1927, pp. 11, ill.

- The Focke-Wulf G. L. 18.

Aeroplane, Vol. 32, No. 4 (Jan. 26,1927), London, p. 98, ill.

- Focke-Wulf school and transport plane. GL18C.

Aero Digest, Vol. 10, No. 4 (Apr. 1927), New York, p. 302, ill.

- See Serryer, J.: Focke-Wulf " G. L. 18." Twin-engine 150 HP. commercial

airplane.

Fog. Instruments in fog flying.

Aviation, Vol. 22, No. 14 (Apr. 4, 1927), New York, p. 677.

- New lamp may solve problem of fog.

U. S. Air Service, Vol. 12, No. 10 (Oct. 1927), Washington, D. C, p. 34. Neon gas-filled lamp.

- See Allen, Edmund T.: Flying through fog and night.

- See Humphreys, W. J.: Fogs and clouds.

Fokker. Construction of New York to Rome Fokker is similar to Commander Byrd's "America."

Aviation, Vol. 23, No. 6 (Aug. 8, 1927), New York, pp. 306-307, ill.

- The Fokker B. III.

Flight, Vol. 19, No. 6 (Feb. 10, 1927), London, p. 67, ill.

- The Fokker C. V.-D.

Flight, Vol. 19, No. 13 (Mar. 31, 1927), London, pp. 187, ill.

- Fokker F. VIII verkeersvliegtuig met 2 motoren.

Het Vliegveld, Ilde Jaarg., No. 7 (Juli 1927), Amsterdam, pp. 223-225, ill.

- Fokker Special Universal is powered with a Wasp engine.

Aviation, Vol. 23, No. 19 (Nov. 7, 1927), New York, p. 1117, ill.

- The Fokker Universal.

Aeroplane, Vol. 33, No. 23 (Dec. 7, 1927), London, p. 762, diagr.

- The Fokker Universal seaplane.

Aero Digest, Vol. 10, No. 3 (Mar. 1927), New York, p. 179, ill. Aviation, Vol. 22, No. 11 (Mar. 14, 1927), New York, p. 526, ill.

- The Fokker V. VIII.

Aeroplane, Vol. 32, No. 3 (Jan. 19, 1927), London, p. 76, diagr.

- The new Fokker Army Bomber.

Aviation, Vol. 23, No. 9 (Aug. 29, 1927), New York, p. 473, ill.

- See Fairbanks, A. J.: Distribution of pressure over model of the upper

wing and aileron of a Fokker D-VII airplane.

Fokker, A. H. G. Air transportation.

Annals, American Academy Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 182-187.

- Airplanes for commercial aviation.

Journ. Soc. Automotive Engineers, Vol. 21, No. 3 (Sept. 1927), New York, pp. 250-253, ill.

Ford. Descriptive notes on the Ford Tour planes.

Aviation, Vol. 23, No. 4 (July 25, 1927), New York, pp. 208-211, ill., tabls.

- The Ford aerial "Flivver."

Flight, Vol. 19, No. 7 (Feb. 17, 1927), London, p. 85, ill.

- The Ford "Flivver" airplane.

Aviation, Vol. 22, No. 3 (Jan. 17,1927), New York, pp. 138, 140, ill.

- The Ford reliability air tour.

Flight, Vol. 19, No. 35 (Sept. 1, 1927), London, pp. 622-623, ill.

- Thirteen planes finish the Third Ford Reliability Tour.

Aviation, Vol. 23, No. 4 (July 25, 1927), New York, pp. 196-199, ill.

- The tri-motored Ford air transport.

Aero Digest, Vol. 10, No. 6 (June 1927), New York, p. 582, ill.

- See McLaughlin, George F. : Ford's latest monoplane.

Ford, G. B. Location, size, and layout of airports.

American City, Vol. 37 (Sept. 1927), New York, pp. 301-303, plan. Literary Digest, Vol. 95 (Oct. 1, 1927), New York, pp. 22-23.

Ford, Henry. See Wilks, Russell: When Ford went up.

Forestry. See Canada: Aircraft and forestry in Canada.

- See Flint, Howard R. : The airplane in forestry.

--See Hawaiian Islands: Sowing forests from airplanes in the Hawaiian

Islands.

- See Kienitz, G. A. : Das Flugzeug im Dienst der Forstwirtschaft.

- See Marner, N. B.: Protecting our forests from fire.

Foschini, Francesco. L'aviazione e l'esplorazione lontana.

Rivista Aeronautica, Anno 3, N. 8 (Agosto 1927), Roma, pp. 3-15.

Foulois, Benjamin D. See O'Connor, Sergeant: Brig. Gen. Benjamin D. Foulois.

Fourth international air congress. The IV. International Air Congress.

Flight, Vol. 19, No. 48 (Nov. 17, 1927), London, p. S00.

France. Le budget aéronautique pour 1928.

L'Aéronautique, 9me année, No. 103 (dec. 1927), Paris, p. 370

- Le budget de l'aéronautique devant les chambres.

L'Aérophile, 35e année, Nos. 1-2 (ler-15 jan. 1927), Paris, pp. 8-10.

- Bulletin des textes officiels de 1' aéronautique. Création d'une Commission permanente des essais d'avions et d'hydravions nouveaux.

L'Aérophile, 35e année, Nos. 3-4 (ler-15 fév. 1927), Paris, pp. 57-59.

--Conditions françaises d'essai des avions et des moteurs.

L'Aéronautique, (L'Aérotechnique, 5e année, No. 51), 9me année, No 94 (mars 1927), Paris, p. 84.

- The cost of French military aviation.

Aeroplane, Vol. 33, No. 24 (Dec. 14, 1927), London, p. 786.

- France increases aeronautical subsidies.

U. S. Air Services, Vol. 12, No. 3 (Mar. 1927), Washington, D 0., p. 14.

- Neuere Flugmotoren in Frankreich.

Die Luftwacht, Heft 10, Okt. 1927, Berlin, pp. 566-569, ill.

- Position de l'industrie aéronautique française.

L'Aéronautique, 9me année, No. 92 (jan. 1927). Paris, pp. 1-2 ill.

France. See Commerical aeronautics: Die Weltluftmächte. 1. Kapitel. Frankreich als Luftmacht.

- See Ducout, Marcel: Caractéristiques comparées des avions commerciaux

en service sur les lignes française et allemandes.

- See Ducout, Marcel: La liaison France-Madagascar.

--See M. L.: La ligne aérienne France-Amérique du Sud.

- See Parachutes: Les sauvetages par parachute en France.

Francis, H. A. Concentrated lateral loads on a strut.

Aircraft Engineer suppl. to Flight, Vol. 19, No. 17 (Apr. 28, 1927), London, pp. 262d-262e.

Franck. Les appareils nouveaux de navigation et la sécurité.

La Technique Aéronautique, 18e année, n. s. No. 67 (15 mai 1927), Paris, pp. 152-159, ill.

François, Villiers. The François Villiers marine pursuit airplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 37, Washington, April 1927, pp. 4, ill.

Franck, P. Les accessoires des avions.

L'Aéronautique, (L'A.érotechnique, 5e année, No. 54), 9me année, No. 97 (juin 1927), Paris, pp. 173-175, ill.

- Phares lumineux ou radiophares?

L'Aéronautique, 9me année, No. 100 (sept. 1927), Paris, pp. 271-274, map, ill.

Franck, P., et V. Chalamand. La traversée aérienne de l'Atlantique Nord.

Service Technique et Industriel de l'Aéronautique, Bulletin Technique, No. 44, Dec. 1927, France, pp. 32, tables, maps.

Franco, R. My hop to the Canary Islands.

Living Age, Vol. 332 (Mar. 15, 1927), Boston, pp. 541-545.

Fraser, Chelsea Curtis. Heroes of the air.

New York, Thomas Y. Crowell Company, 1927, pp. xvi, 487, ill.

French, E. C Spokane's airport and the stimulation of American air-minded-ness; National air Derby and the Pacific Coast air Derby. American City, Vol. 37 (Aug., 1927), New York, pp. 158-159, ill.

Frey, K. Versuche mit rotierenden Zylindern in Verbindung mit Tragflächen.

Zeitschrift für technische Physik, Bd. 8, Nr. 1, 1927, Leipsic, pp. 8-12, ill.

Fricke, Hermann. Vom Fliegen und Fliegenlernen. Heft I der SportflugBücherei.

Oldenburg O, Verlag Gerhard Stalling, pp. 49.

Friel, E. C. Design of tapered internally braced wings.

Air Corps Information Circular, Vol. 6, No. 599 (Nov. 1, 1927), Washington, pp. 42, diagrs., tables.

Fry. The Fry liquid gauge.

Aviation, Vol. 23, No. 10 (Sept. 5, 1927), New York, p. 542, ill.

Fuchs, R., und A. v. Baranopf. Zur Theorie der Seitenbewegung des Flugseugs.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 2. Heft (28. Jan. 1927), München, pp. 32-41, ill., diagrs.

Fuel. A heavy oil substitute for gasoline. A noninflammable fuel undergoing tests in France.

Aviation, Vol. 22, No. 5 (Jan. 31, 1927), New York, p. 214.

--New fuel improves engine performance.

Aviation, Vol. 23, No. 12 (Sept. 19,1927), New York, p. 669. "Naturaline."

- See Brown, George Granger: The relation of motor fuel characteristics to

engine performance.

Fuel. See Crane, Henry M.: Aero engine fuels of today and tomorrow.

- See Lempertz, E.: Flüssige und gasförmige Brennstoffe im Luftschiff betrieb.

- See Makhonine: Les essais du carburant Makhonine dans l'aviation

marchande.

- See Rackwitz: Kraftstoffe für Flugmotoren und deren Beurteilung.

- See Takaka, Yoshio, Yuzaburo Nagai, and Kinsei Akiyama: Lower limit

of inflammability of ethyl alcohol, ethyl ether, methyl cyclohexane and their mixtures.

- See Waco 10: Waco 10 with Caminez engine tested for fuel consumption.

Fuel sprays. See Joachim, W. F., and Edward G. Beardsley: The effect of fuel and cylinder gas densities on the characteristics of fuel sprays for oil engines.

Fuld, E. Na tien jaren.

Het Vliegveld, Ilde Jaarg., No. 1 (Jan. 1927), Amsterdam, pp. 3-6, ill.

- See Wolff, E. B.: Bij het jubileum van "Het Vliegveld."

Fuller, E. W. Aerial photography and surveying.

Popular Aviation, Vol. 1, No. 1 (Aug. 1927), Chicago, pp. 16-19, ill.

--The aerial surveyor at work.

Popular Aviation, Vol. 1, No. 3 (Oct. 1927), Chicago, pp. 12-14, ill.

Fuselage. See Minelli, Carlo: Verifica di stabilità della fusoliera tetraedra.

G

Gabrielli, Giuseppe. Un metodo approssimato per l'adattamento dell'elìca posteriore di un sistema di due eliche in tandem.

L'Aerotecnica, Voi. 7 (Anno 5), N. 8 (Sett. 1927), Pisa, pp. 575-582, diagr.

- Sulla determinazione del diedro longitudinale più conveniente degli aeroplani.

L'Aerotecnica, Giornale ed Atti dell'Associazione Italiana di Aerotecnica, Voi. 7, N. 5 (Maggio 1927), Pisa, pp. 287-295, ill.

- See Ferrari, C, e G. Gabrielli: Studio sull'elica autorotante.

Gadd, A. G. See Lock, C. N. H., H. C. H. Townend, and A. G. Gadd: Wind tunnel experiments on a symmetrical aerofoil (Gottingen 429 section.)

Gage, Gerald R. See Lindbergh, Gage: "Plucky" Lindbergh; incidents in the life of Colonel Charles Lindbergh and brief biography, log of his transatlantic trip and receptions, recording all important facts.

Galli-Briquet parachute. The Galli-Briquet postal parachute. Aviation, Vol. 23, No. 11 (Sept. 12,1927), New York, p. 626.

Gallina, Vitale Giovanni. Il primo Congresso-Internazionale del Motore a Scoppio. Problemi—Tendenze—Risultati.

L'Aerotecnica, Voi. 7 (Anno 5), N. 8 (Agosto 1927), Pisa, pp. 471-485.

Gamble, C. F. Snowden. German aviation from within (August 8 to 12, 1927).

Aeroplane, Vol. 33, Nos. 20-22 (Nov. 16-30, 1927), London, pp. 676-678, 706-708, 734-736, ill.

Garber, Paul Edward. An easily made model airplane with good flying qualities.

U. S. Air Services, Vol. 12, No. 11 (Nov. 1927), Washington, D. C, pp. 44-48, diagr.

Gabber, Paul Edward. National air tour, 1927.

U. S. Air Services, Vol. 12, No. 6 (June 1927), Washington, D. C, pp. 51-52.

- Stinson "Detroiter" wins National Air Tour.

U. S. Air Services, Vol. 12, No. 8 (Aug. 1927), Washington, D. C, pp. 33.

Gardiner, Arthur W., and Oscar W. Schey. The comparative performance of an aviation engine at normal and high inlet air temperatures.

National Advisory Committee for Aeronautics, Report No. 277, February 3, 1928, Washington, Government Printing Office, 1927, pp. 19, diagrs.

Gardiner, Arthur W., and Elliott G. Reid. Prehminary flight tests of the N. A. C. A. Roots type aircraft engine supercharger.

National Advisory Committee for Aeronautics, Report No. 263, August 3,1927, Washington, Government Printing Office, 1927, pp. 13, ill., diagrs.

Gardiner, Arthur W., and William E. Whedon. The relative performance obtained with several methods of control of an overcompressed engine using gasoline.

National Advisory Committee for Aeronautics, Report No. 272, February 21, 1928, Washington, Government Printing Office, 1927, pp. 13, ill.

Gardner, Lester D. Is aviation a delusion? with reply.

Review of Reviews, Vol. 76 (July 1927), New York, pp. 39-44, ill.

- The Deruluft airline to Moscow.

Aviation, Vol. 22, Nos. 7-9 (Feb. 14-28, 1927), New York, pp. 318-322, 371-376, 404-406, ill

- Flying high in Europe.

World's Work, Vol. 53 (Jan. 1927), Garden City, N. Y., pp. 289-301, ill.

- The fourth Congress of Aerial Navigation.

Aviation, Vol. 23, No. 24 (Dec. 12,1927), New York, pp. 1400-1401, ill.

- From Genoa to Palermo by air.

Aviation, Vol. 22, Nos. 15-16 (Apr. 4-11, 1927), New York, pp. 670-674, 722-725, 728-729, ill., map.

- German air transport.

Aviation, Vol. 23, Nos. 3,5,7, 9, (July 18, Aug. 1, 15, 22,1927), New York, pp. 146-150, 253-260, 365-369, 469-472, 495, ill., maps, diagr.

-: How they fly in Europe.

Review of Reviews, Vol. 76 (Oct. 1927), New York, pp. 381-389, ill.

- The Schneider Trophy race through American eyes.

Aviation, Vol. 23, No. 18 (Oct. 31, 1927), New York, pp. 1050-1053, ill.

Garner, H. M., and S. B. Gates. The full scale determination of the lateral resistance derivatives of a Bristol Fighter aeroplane.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 414-429, diagr.

Garner, H. M. The full scale determination of the lateral resistance derivatives of a Bristol Fighter aeroplane. Part II—The etermination of the rate of turn derivatives.

Aeronautical Research Committee, Reports and Memoranda No. 1068 (Ae. 250), (Sept. 1926), London, 1927, pp. 4, table.

- Full scale tests of a Bristol Fighter with slot and aileron control operated

by a differential link mechanism.

Aeronautical Research Committee, Reports and Memoranda No. 1101 (Ae. 279), May 1927, London, 1927, pp. 2, diagr.

- Lateral stability with special reference to controlled motion.

Aeronautical Research Committee, Reports and Memoranda, No. 1077 (Ae. 258), Oct. 1926, London, 1927, pp. 19, diagr.

- See Jones, E. T., L. E. Caygill, R. G. Harris, and H. M. Garner: Lift and

drag of the Bristol Fighter with Fairey variable camber wings.

Gases. See Stevens, F. W.: The gaseous explosive reaction—the effect of inert gases.

Gasnier du Fresne, P. Les pilotes de réserve qui fréquentent les centres d'entraînement ne sont pas suffisamment encouragés par l'état.

L'Aérophile, 35e année, Nos. 11-12 (ler-15 juin 1927), Paris, pp. 182-183, port.

Gates, S. B. See Bryant, L. W., and S. B. Gates: The spinning of aeroplanes.

- See Garner, H. M., and S. B. Gates: The full scale determination of the

lateral resistance derivatives of a Bristol Fighter aeroplane.

Gates, S. F. See Egerton, A., and S. F. Gates: Summary by the secretary engine sub-committee of a " Report on Anti-Knock Investigations.

Gaunt, V. S. Construction and assembly of float and boat seaplanes.

Journ. Roy. Aer. Soe., Vol. 31, No. 195 (Mar. 1927), London, pp. 243-255, ill., diagr.

Gavin, Arthur. Safe-aircraft competition for $150,000.

U. S. Air Services, Vol. 12, No. 11 (Nov. 1927), Washington, D. C, p. 34.

- Lieut. Arthur Gavin, U. S. N., wins Herbert Schiff trophy for 1927.

Aviation, Vol. 23, No. 17 (Oct. 24, 1927), New York, p. 1001, ill.

Gayler, Marie I. V. The undercooling of some aluminum alloys.

Aeronautical Research Committee, Eeports and Memoranda No. 1102 (M. 50), May, 1927, London, 1927, pp 24, tabls., ill., diagr.

Gears. See Tiltman, A. H.: Flap gear for aeroplanes.

Gelzenlichter, R. Aircraft fire prevention.

Air Corps Information Circular, Vol. 6, No. 592 (Sept. 15, 1927), Washington, pp. 34, ill., diagr., tables.

Genet, E. C. C. Leaves from a war diary.

North American Review, Vol. 224 (Sept. 1927), New York, pp. 406-420.

Geneva. See Bouché, Henri: Pendant qu'on parle à Genève. La limitation des armements aériens et l'aéronautique Allemande.

Georgii, Walter. Ergebnisse des 4. Küstensegelflugwettbewerbs in Rossitten.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 14. Heft (28. Juli 1927), München, pp. 321324, ill.

- Ergebnisse des Rhön-Segelflug-Wettbewerbes 1927.

Zeitschr. Flugt. Motorluftsch. 18. Jahrg., 23. Heft (14. Dez. 1927), München, pp. 537542, ill.

- Flugmeteorologie,

Leipzig, Akademische Verlagsgesellschaft m. b. H., pp. 232, ill.

- Die meteorologischen Grundlagen des transatlantischen Luftverkehrs.

Die Luftwacht, Heft 10, Okt. 1927, Berlin, pp. 583-584.

Gerhardt, W. F. A manual of flight-test procedure. Revised by L. V. Kerber.

Department of Engineering Research, University of Michigan, Ann Arbor, Engineering Research Bulletin No. 9, December 1927, pp. 122, ill., diagrs., tabls.

German American prize. Deutscher Nord-Amerika-Preis.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 15. Heft (16. Aug. 1927), München, pp. 345.

German gliders. See Gymnich, Alfried: Some German gliders of 1920-1923,

Germany. Air traffic in Germany.

Aeroplane, Vol. 32, No. 13 (Mar. 30, 1927), London, pp. 330-332, ill. Flight, Vol. 19, No. 13 (Mar. 31, 1927), London, pp. 192-194.

Germany. L'Allemagne a l'assaut des records.

L'Aérophile, 35e année, Nos. 17-18 (ler-15 sept. 1927), Paris, pp. 263-264.

- Deutscher Dauer- und Strecken-Leistungs-Preis.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 15. Heft (16. Aug. 1927), München, pp. 345-346.

- German trans-Atlantic liners.

Scient. Amer., Vol. 137 (Nov., 1927), New York, p. 444, ill.

- Germany takes the air.

Living Age, Vol. 332 (Feb. 1,1927), Boston, pp. 219-226, map.

- De ontwikkeling van het Duitsche verkeersvliegtuig.

Het Vliegveld, 11 de Jaarg., No. 10,12 (Oct. Dec. 1927), Amsterdam, pp. 358,360-361,416-417.

- See Bartz, Werner: Deutsche Luftrechtspolitik seit Versailles.

- See Bouché, Henri: Pendant qu'on parle à Genève. La limitation des

armements aériens et l'aéronautique Allemande.

- See Ducout, Marcel: Caractéristiques comparées des avions commerciaux

en service sur les lignes française et allemandes.

--See Edzard et Risticz: L'Allemagne reprend les records du monde de

durée et de distance en circuit.

- See Gardner, Lester D.: German air transport.

- See Liebers, F. : Ergebnisse und Erfahrungen aus dem Süddeutschlandflug

1926.

- See Lighting: L'éclairage des terrains et des routes aériennes en Angleterre

et en Allemagne.

- See Mehren, E. J.: Air travel in Germany a business built on practical

economics.

- See Mehren, E. J. : Traveling the air in Germany.

- See Reboul: L'aviation allemande.

- See Records: German airmen establish a new world's endurance flight

record.

- See Verdurand, A. : Les colossales perspectives d'avenir de l'aviation commerciale allemande.

- See Wronsky : Het Duitsche luchtverkeer.

- See Wronsky, Martin: Air trafile in Germany.

- See Wronsky, Martin : The truth about German aviation.

Geschäftsstelle: Deutsche Versuchsanstalt für Luftfahrt E. V. 13. Bericht des Fachnormenausschusses für Luftfahrt (Falu).

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 13, 15. Heft (14. Juli, 16. Aug. 1927), München, pp. 302-304, 358-361, ill.

Giacomelli, H. Dispositivi per il controllo laterale e l'aumento della portanza nell'ala del'aeroplano e dell'uccello.

L'Aerotecnica, Giornale ed Atti dell'Associazione Italiana di Aerotecnica, Voi. 7, N. 4, 6 (Aprile, Giugno 1927), Pisa, pp. 167-204, 351-369, ill.

- Leonardo da Vinci e il volo meccanico.

L'Aerotecnica, Voi. 7 (Anno 5), N. 8 (Agosto 1927), Pisa, pp. 486-524, ill.

Giblett, M. A. Line-squalls.

Journ. Roy. Aer. Soc, Vol. 31, No. 198 (June 1927), London, pp. 500-549, ill., diagr.

Gibson, W. G. Aeroplane controls; faults and diagnosis.

Journ. Roy. Aer. Soc, Vol. 31, No. 195 (Mar. 1927), London, pp. 237-243.

- Defects and deterioration.

Journ. Roy. Aer. Soc., Vol. 31, No. 203 (Nov. 1927), London, pp. 1050-1060.

--Erection and rigging of aeroplanes.

Journ. Roy. Aer. Soc, Vol. 31, No. 200 (Aug. 1927), London, pp. 791-798.

Giesler. Die Aussichtslosigkeit der nationalen Verteidigung ohne Luftschutz. Die Luftwacht, Heft 8, Aug. 1927, Berlin, pp. 461-467.

Gilbert, W. V. Aviation signalling and safety.

Aviation, Vol. 22, No. 22 (May 30, 1927), New York, pp. 1170-1171, ill.

Gilfond, D. Pickups are air pilots whose passengers come back for more. American Magazine, Vol. 103 (Jan. 1927), Springfield, Ohio, p. 64.

Gill, T. Flight to the unknown.

Scribner's Magazine, Vol. 82 (July 1927), New York, pp. 60-69, ill.

Gillmore, William E. Radio beacon used by commercial airplanes.

U. S. Air Services, Vol. 12, No. 3 (Mar. 1927), Washington, D. C, p. 15, ill.

- Review of year's developments in the Army Air Corps.

Slipstream, Vol. 8, No. 3 (Mar. 1927), Dayton, Ohio, pp. 6-15, ill.

Gilman, N. H. The air-cooled Liberty engine.

Aviation, Vol. 23, No. 25 (Dec. 19, 1927), New York, pp. 1468-1470, ill., diagr.

Ginocchietti, Angelo. La nave porta aerei e il problema aeromarittimo. Rivista Aeronautica, Anno 3, No. 10 (Ott. 1927), Roma, pp. 3-11.

Girault, Maurice. Construction géométrique de profils d'ailes par représentation conforme d'un cercle.

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Aeronautical Research Committee, Reports and Memoranda, No. 1099 (E. 25), Mar., 1927 London, 1927, pp. 7, tabls.

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Aeronautical Research Committee, Reports and Memoranda, No. 1093 (Ae. 272), Mar., 1927, London, 1927, pp. 10.

—>— On the contraction of the slipstream of an airscrew.

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Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927 pp. 516-525, diagr., tabls.

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Glendinning, W. G. Report on the use of artificial sources of light as a substitute in the weatheriug of fabric.

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Gliders. Gliders and motorless planes.

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Scient. Amer., Vol. 137 (Nov. 1927), New York, pp. 472-473.

- Sky-trains of cars.

Literary Digest, Vol. 94 (Sept. 3, 1927), New York, pp. 57-58.

- See Camm, F. J.: Building a full size glider.

- See Gymnich, Alfried :* Glider construction and design.

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stability of a monoplane glider.

Gloster. The Gloster Gambet.

Aeroplane, Vol. 32, No. 22 (June 1, 1927), London, pp. 650-652, ill.

- The Gloster "Gambet" airplane. A deck-landing ship's fighter fitted

with a 420 H. P. Bristol Jupiter VI engine.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 48, Washington, July, 1927, pp. 5, ill. From "The Aeroplane," June 1, 1927.

- Gloster "Gamecocks" for Finland.

Flight, Vol. 19, No. 22 (June 2, 1927), London, pp. 351-352, diagr.

-- The Gloster "Goral."

Flight, Vol. 19, No. 30 (July 28,1927), London, pp. 519-521, ill.

- The "Gloster Gorcock."

Flight, Vol. 19, No. 8 (Feb. 24, 1927), London, pp. 96-97, ill.

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Glover, W. I. Air mail.

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Glues. See Burdett, H.: Glues.

Göttingen. See Roy, Maurice: A propos des nouvelles recherches publiées par le laboratoire aérodynamique de Göttingen.

Goggles. Strauss and Buegeleisen's "Résistai" goggles for aviators offer more protection and increased comfort.

u. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. c, p. 28, ill.

Goldingham, A. H. Diesel engines (marine and stationary). London, Spon and Chamberlain, 1927, pp. 255.

Goldsborough. Brice. The earth inductor compass.

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Goldsmith, L. C. Air patrol.

Sunset, Vol. 59 (Sept. 1927), San Francisco, pp. 40-41, ill.

Goldstrom, J. Safety in aviation improving.

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Goodman, John. Mechanics applied to engineering.

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Goodyear. See Burton, Walter E.: A "flying schoolhouse." Goodyear-Zep-pelin Corp. engineers design craft for training military or commercial crews.

Goodyear Tire & Rubber Co. Ohio worlds lighter-than-air center. Slipstream, Vol. 8, No. 9 (Sept. 1927), Dayton, Ohio, pp. 28-29, ill.

Gordon-Bennett. La Copa Gordon-Bennet.

Ibérica, Año 14, Num. 700 (5 no v. 1927), Barcelona, p. 262.

- Gordon Bennett balloon race.

Aero Digest, Vol. 11, No. 3 (Sept. 1927), New York, pp. 282, 342.

--The Gordon Bennett balloon races.

Aviation, Vol. 23, No. 9 (Aug. 29, 1927), New York, pp. 479-480, ill.

--Résultats officiels de la coupe Gordon-Bennett des ballons libres.

L'Aërophile, 35e année, Nos. 23-24 (Ier-15 déc. 1927), Paris, p. 367.

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Gosslau, F. Die Flugmotoren auf der 10. Pariser Luftfahrt-Ausstellung.

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Gossow, E. Deutsche Verkehrsflugzeuge.

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Gott, Edgar N. What Wright Field means to the manufacturer. Slipstream, Vol. 8, No. 10 (Oct. 1927), Dayton, Ohio, pp. 24, 50, ill.

Gottwaldt, B. L. See Amundsen, Roald Engelbregt Gravning, and Lincoln Ellsworth: The first flight across the polar sea.—The Norge's radio station and the radio service on board, by R. L. Gottwaldt.

Gouge, A. An investigation into the "take off" of flying-boats.

Aircraft Engineer suppl. to Flight, Vol. 19, No. 47 (Nov. 24,1927), London, pp. 810a-810d.

Gough, H. J., D. Hanson, and S. J. Wright. The behaviour of single crystals of aluminum under static and repeated stresses. Parts 1, 2, and 3.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 723-776, ill., tables.

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portion of a cycle of repeated tensile stresses.

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Gough, H. J. and H. J. Tapsell. Some comparative fatigue tests in special relation to the impressed conditions of test.

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Gough, H. J., D. Hanson, and S. J. Wright. Some further experiments on single crystals of aluminum employing reversed direct stresses.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 819-832, tabls.

- Some further experiments on the behaviour of single crystals of aluminum

under reversed torsional stresses.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 777-791, ill., tabls.

Gotjgh, H. J., D. Hanson, and S. J. Wright. A test on a specimen consisting I of three crystals under reversed torsional stresses.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, ppi 833-837, ill.

Gotjgh, H. J. See Southwell, R. V., and H. J. Gough: On the concentration of stresses in the neighbourhood of a small spherical flaw; and on the propagation of fatigue fractures in "statically isotropic" materials.

Gove, W. D., and M. W. Green. The direct measurement of engine power on an airplane in flight with a hub type dynamometer.

National Advisory Committee for Aeronautics, Report No. 252, April 11,1927, Washington Government Printing Office, 1927, pp. 11, ill., diagrs.

Graffigny, Henry de. Les moteurs de demain-pétrole, vapeur, électricité, gaz liquéfiés, explosifs.

L'Aérophile, 35e année, Nos. 7-8 (ler-15 avril 1927), Paris, pp. 112-114.

- La stabilisation des aérostats par procédé thermique. •

L'Aérophile, 35e année, Nos. 15-16 (ler-15 août 1927), Paris, pp. 248-249, ill.

Gray, Hawthorne C. Eight miles straight up!

Pop. Mech., Vol. 48 (Aug. 1927), Chicago, pp. 176-181, ill.

- Eight miles up; world's record balloon flight.

St. Nicholas, Vol. 54 (Aug. 1927), New York, pp. 778-780, ill.

- Man's greatest altitude above the earth. Captain Gray, Army Air Corps,

reaches height of more than 8 miles.

U. S. Air Services, Vol. 12, No. 6 (June 1927), Washington, D. C, pp. 49-50, ill.

Great Britain. Airways of the Empire. Current events and future plans reviewed.

Aero Field, Vol. 1, No. 11 (Feb. 1927), London, pp. 242-247, maps.

- British prefer airships.

Literary Digest, Vol. 92 (Jan. 15, 1927), New York, pp. 16-17, map.

- Les clubs d'aviation et les avions privés en Grande-Bretagne.

L'Aéronautique, 9me année, No. 101 (oct. 1927), Paris, pp. 321-322.

- Privately owned aircraft registered in Great Britain. The meaning of

identification letters.

Flight, Vol. 19, No. 15 (Apr. 14, 1927), London, pp. 223-224.

- The progress of civil aviation in Britain.

Aeroplane, Vol. 32, No. 17 (Apr. 27, 1927), London, pp. 464-468.

- See Aeronautical Research committee: Aeronautical research in Great

Britain.

- See Estimates: On the air estimates.

- See Jacques, P.: L'aviation en Grande-Bretagne.

- See Schneider Cup: La Grande-Bretagne remporte la Coupe Schneider.

- See Schneider Cup: Great Britain wins Schneider trophy.

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Green, Edward H. R. See Hollingsworth, F. N.: An experimental airport.

Green, Fitzhtjgh. See Lindbergh, Charles Augustus: "We", by Charles A. Lindbergh; the famous flier's own story of his life and his transatlantic flight, together with his views on the future of aviation, with a foreword by Myron T. Herrick.

Green, M. W. Measurement of the moments of inertia of full scale airplanes.

National Advisory Committee for Aeronautics, Technical Notes No. 265, Washington, September 1927, pp. 13, ill.

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power on an airplane in flight with a hub type dynamometer.

Gregg, David. Commercial superchargers, v

Aero Digest, Vol. 10, No. 1 (Jan. 1927), New York, pp. 20, 70-71, ill.

Gregg, Willis Ray. Meteorology of the North Atlantic and trans-Atlantic flight.

Aviation, Vol. 23, No. 5 (Aug. 1, 1927), New York, pp. 242-245, 262, maps, diagr.

- Meteorological service for commercial aeronautics.

U. S. Air Services, Vol. 12, Nó. 2 (Feb. 1927), Washington, D. C, pp. 17-23, ill., maps.

Grenier, P. Un traceur de route pour aéronef : l'Autoestimographe Mengden. L'Aéronautique, 9me année, No. 92 (jan. 1927), Paris, pp. 7-8, ill.

•

Grey, Charles Grey. All the world's aircraft, 1927.

London, Sampson Low, Marston & Co., Ltd., 1927, pp. 487, ill.

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Rivista Aeronautica, Anno 3, N. 4 (Giugno 1927), Roma, pp. 3-10.

Grimault, P. L'ingénieur. Jean Hubert.

L'Aéronautique, 9me année, No. 103 (dèe. 1927), Paris, pp. 371-372.

Grisard Field. Grisard Field, Cincinnati.

Slipstream, Vol. 8, No. 9 (Sept. 1927), Dayton, Ohio, pp. 23-25.

Grogan, J. D. Report on study of mechanical properties of sihcon-aluminium alloys. Parts I and II.

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Ground effect. See Reid, Elliott G.: A full-scale investigation of ground effect.

Ground signals. Ground signaling on Imperial Airways Route. r

Aviation, Vol. 22, No. 6 (Feb. 7,1927), New York, p. 277. ill.

Gauges. See Fry: The Fry liquid gauge.

Gürtler, Karl. Alte und neue Methoden def Vermessung aus dem Flugzeug. Die Luftwacht, Heft 8, Aug. 1927, Berlin, pp. 54-456.

Guggenheim. First entries for Guggenheim competition. Five British firms already included.

Flight, Vol. 19, No. 41 (Oct. 13, 1927), London, p. 725.

- The Guggenheim safe-aircraft competition.

Aviation, Vol. 22, No. 19 (May 9, 1927), New York pp. 979-983, ill.

Guggenheim, Daniel. Aeronautical engineering offers most promising future. u. S. Air Services, Vol. 12, No. 2 (Feb. 1927), Washington, D. C, p. 26.

- The Daniel Guggenheim safe-aircraft competition.

Flight, Vol. 19, No. 24 (June 16, 1927), London, pp. 395-396.

Journ. Roy. Aer. Soc, Vol. 31, No. 198 (June 1927), London, pp. 590-601. .

- Guggenheim gift to Univ. of Michigan.

Aero Digest, Vol. 10, No. 1 (Jan. 19271,.New York, p. 42.

- Regolamento per la gara Daniel Guggenheim. Sicurezza di volo per gli

aeroplani.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Voi. 7, N. 4 (Aprile 1927), Pisa, pp. 240-242.

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Guggenheim, Harry F.

The first year of the Guggenheim Fund.

Aviation, Vol. 22, No. 1 (Jan. 3,1927), New York, p. 18.

- Guggenheim to finance passenger services.

Aviation, Vol. 23, No. 3 (July 18,1927), New York, p. 151.

-_ Importance of aerodynamic safety in aviation.

Mechanical Engineering, Vol. 49, No. 7 (July 1927), New York, pp. 719-723, ill.

- Safety in the air.

Saturday Evening Post, Vol. 199, (June 25, 1927), Philadelphia, p. 29.

"Guggenheim fund. Le concours de sécurite de Daniel Guggenheim fund.

L'Aéronautique, (L'Aérotechnique, 5me année, No. 56), 9me année, No. 99 (aoüt 1927), Paris, pp. 249-250.

- Le nouveau centre de documentation aéronautique internationale.

L'Aérophile, 35e année, Nos. 7-8 (ler-15 avril 1927), Paris, p. 105, ports.

- On the safety first competition.

Aeroplane, Vol. 32, Nos. 24-25 (June 15-22, 1927), London, pp. 697-700, 721-722, ill.

- The safe-aircraft competition.

Popular Aviation, Vol. 1, No. 5 (Dec. 1927), Chicago, pp. 19-20, ill.

- Safety in flight. Prizes of £30,000 are offered in an international competition for the safest aeroplane.

Airways, Vol. 3, No. 11 (July 1927), London, p. 380.

Guggenheim Research Committee. Guggenheim Research Committee formed. Aviation, Vol. 23, No. 14 (Oct. 3, 1927), New York, p. 819.

Guggenheim School of Aeronautics. The Daniel Guggenheim School of Aeronautics.

Aviation, Vol. 23, No. 16 (Oct. 17, 1927), New York, pp. 938-940, ill., diagr.

Guglielmetti, Aldo. Alcune considerazioni sui velivoli da corsa.

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Guglielmetti, Aldo, e Luigi G. Ferrari. Il calcolo delle ruote degli aeroplani.

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Rendiconti Technici della Direzione Generale del Genio Aeronautico, Anno 15, N. 4 (Set. 1927), Roma, pp. 1-39, ill., diagrs.

Guglielmetti, Aldo. Studio sull'applicazione delle controeliche sugli aerei.

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Guibert. La T. S. F. et la navigation aérienne.

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Guidoni, A. Aeronautics.

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Guilbaud, V. L'hydravion d'un voyage à travers l'afrique.

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GuiLLAUMET, Henri. See Blanchet, Georges: Aviateurs contemporains. Quelques pilotes de la ligne Latécoère: Casablanca-Dakar.

Gustosa, Corrado. La camera pneumatico-frigorifera di Montecelio. Rivista Aeronautica, Anno 3, N. 7jLuglio 1927), Roma, pp. 80-99, ill.

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Gustosa, Corrado. I paracadute dorsali "Salvator" e le modalità5 di collaudo di essi.

Rivista Aeronautica, Anno 3, No. 9 (Set. 1927), Roma, pp. 49-67, ill.

Gut. Die Weltluftpostkongerenz im Haag.

Die Luftwacht, Heft 11, Nov. 1927, Berlin, pp. 630-632.

"GwAMP." Private flying field equipment.

Flight, Vol. 19, No. 32 (Aug. 11, 1927), London, pp. 566-567, ill.

Gymnich, Alfried. Der Düsenflügel als Mittel zur Verhinderung des Uberziehens.

Die Luftwacht, Heft 7, Juli 1927, Berlin, pp. 404-406, ill.

- Die Flugpraxis. Handbuch für Flugschüler.

Berlin, 1927, pp. 214, ill.

- Glider construction and design.

National Advisory Committee for Aeronautics, Technical Memorandums No. 434, October 1927, Washington, pp. 20, ill., tables. From "Der Gleit- und Segelflugzeugbau".

- Some German gliders of 1920-1923.

National Advisory Committee for Aeronautics, Technical Memorandums No. 433, October 1927, Washington, pp. 20, ill. From "Der Gleit- und Segelflugbau".

- Structural details of German gliders.

National Advisory Committee for Aeronautics, Technical Memorandums No. 439, November 1927, Washington, pp. 32, ill. From "Der Gleit-und Segelflugzeugbau".

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Die Luftwacht, Heft 11, Nov. 1927, Berlin, pp. 627-630.

H

H. C. Le Ve Congrès des sociétés affiliées à PAéro-Club de France. L'Aérophile, 35e année, Nos. 1-2 (ler-15 jan. 1927), Paris, pp. 23-24.

- La nouvelle organisation des services administratifs de l'aéronautique.

L'Aérophile, 35e année, Nos. 3-4 (ler-15 fév. 1927), Paris, pp. 38-39.

H. M. P. L'accélérographe H. M. P.

L'Aéronautique (L'Aérotechnique, 5me année, No. 60), 9e année, No. 103 (déc. 1927), Paris, pp. 391-392, ill.

H-Nadp. See Hek, G. van 't: De tocht van de H-Nadp en de oudere jeugd.

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H. W. De metalen Rohrbach vleigtuigen de driemotorige "Roland".

Het Vliegveld, Ilde Jaarg., No. 3 (Maart 1927), Amsterdam, pp. 82-84, ill.

H. W. H. Wind drift.

Nature, Vol. 119, No. 2994 (March 19, 1927), London, p. 443.

Hackmack, H. Carl Plauth.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 23. Heft (14. Dez. 1927), München, pp. 551-552, port.

Hadfield, Isabel H. See Barr, Guy, and Isabel H Hadfield: Some physio-chemical studies on the effect of sunlight on cotton.

Haig, R. A. de H. Large airships as aircraft carriers.

Aviation, Vol. 22, No. 13 (Mar. 28,1927), New York, pp. 611-614, ill.

Halbert, Ward K. Standard Oil plane earns $16,000 a year.

U. S. Air Services, Vol. 12, No. 10 (Oct. 1927), Washington, D. C, pp. 30-31, ill.

Haldeman, • George. See Elder, Ruth: Xe vol dramatique de Miss Ruth Elder et de Haldeman.

—■— See Elder, Ruth: Women flyers meet at sea.

- See New York to Paris: Trans-Atlantic plane forced down 325 mi. from the

Azores.

Hall, Donald A. Technical preparation of the airplane "Spirit of St. Louis". Written for the National Advisory Committee for Aeronautics.

National Advisory Committee for Aeronautics, Technical Notes No. 257, Washington, July 1927, pp. 12, ill., diagrs.

- Technical preparation of the Ryan New York-Paris airplane.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, pp. 36-38,106, ill., diagr.

Hall, R. Scott. Polar exploration and survey by air.

Journ. Roy. Aer. Soc, Vol. 31, No. 201 (Aug. 1927), London, pp. 890-900.

Hall, S. Scott. Lateral stability at low speed: Part I. Measurement of rolling moments for three wings at low rates of roll. Part II. Pressure measurements on a wing whilst rotating at low speeds.

Aeronautical Research Committee, Reports and Memoranda, No. 1075 (Ae. 257), Jan. 1927, London, 1927, pp. 13, tabls., diagr.

Halliday, A. S. See Batson, A. S., A. S. Halliday, and A. L. Maidens: The distribution of pressure over a monoplane and a biplane with wings of unequal chord and equal span.

- See Batson, A. S., D. H. Williams, and A. S. Halliday: Experiments on

a model of a Fokker (F. VII) monoplane wing.

Halsey, C. W. Notable episodes in the history of flying.

Current History Magazine of N. Y. Times, Vol. 26 (July 1927), New York, pp. 551-555.

Hamburg. See Dietz, Paul: Operations of Hamburg air harbor.

- See Peter, Karl: Das künftige Flughafen-Verwaltungsgebäude in

Hamburg.

Hambtjrg, Merrill. Directions for building indoor tractor No. 2.

TJ. S. Air Services, Vol. 12, No. 5 (May 1927), Washington, D. C, pp. 47-49, diagr.

- Model airplane construction.

Industrial Education Magazine, Vol. 29 (Oct. 1927), Peoria, 111., pp. 124-128, ill., diagr.

Hamilton. The new Hamilton all-metal airplane.

Aviation, Vol. 22, No. 18 (May 2, 1927), New York, pp. 902-904, ill.

- New Hamilton all-metal cabin plane.

Aero Digest, Vol. 10, No. 4 (Apr. 1927), New York, p. 294, ill.

- Performance tests of the Hamilton " Metalplane."

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, p. 190.

Hampshire. The Hampshire air pageant.

Aeroplane, Vol. 32, No. 20 (May 18, 1927), London, pp. 588-594, ill.

Flight, Vol. 19, Nos. 19, 20 (May 12,19, 1927), London, pp. 290-292, 306-310, ill.

Handicaps. On handicaps.

Aeroplane, Vol. 33, No. 4 (July 27, 1927) London, pp. 117-124.

Handley Page. Tests on Handley Page aerofoil A.l and R. A. F. 31.

Aeronautical Research Committee, Reports and Memoranda, No. 1055 (Ae. 238), Jan. 1926, London, 1927, pp. 32, tabls., diagr.

Handley Page, Frederick. Aviation.

Journ. Roy. Aer. Soc, Vol. 31, No. 203 (Nov. 1927), Londsa.pp. 1005-1025, ill., table.

6333—28--6

Handley Page, Frederick. Les results obtenus avec l'aile à fente. L'Aérophile, 35e année, Nos. 3-4 (ler-15 fév. 1927), Paris, pp. 43-45, ill.

- See Smith, R. H.: Lift, drag, and elevator hinge moments of Handley-

Page control surfaces.

Hangar doors. Truscon develops steel hangar doors.

Aero Digest, Vol. 10, No. 3 (Mar. 1927), New York, p. 234, ill.

Hangars. See Cardington: The Cardington airship shed and mooring tower.

Hanson, Earl C. Floating airports.

Popular Aviation, Vol. 1, No. 3 (Oct. 1927), Chicago, p. 50.

Hanson, D. See Gough, H. J., D. Hanson, and S. J. Wright; The behaviour of single crystals of aluminium under static and repeated stresses.

- See Gough, H. J., S. J. Wright, and D. Hanson: An experiment to determine if slip can be detected during the unloading portion of a cycle of repeated tensile stresses.

Hardecker, J. F. Standardization in the air.

Automotive Industries, Vol. 56, No. 15 (April 16, 1927), New York, pp. 575-577.

Harding, Wilbur T. Handbook of instructions for airdrome landing field floodlight, Type A-l.

Air Corps Information Circular, Vol. 6, No. 583 (Feb. 1,1927), Washington, pp. 8, ill., diagr.

--Handbook of instructions for airdrome landing-field flood lights types

A-2 and A-3.

Air Corps Information Circular, Vol. 7, No. 601 (Nov. 1, 1927), Washington, pp. 5, ill.

--Handbook of instruction for airdrome landing-field flood light type A-4.

Air Corps Information Circular, Vol. 7, No. 606 (Nov. 1, 1927), Washington, pp. 3, ill., diagr.

--Night flying equipment for the aerodrome.

Aviation, Vol. 22, Nos. 21-24 (May 23-June 13, 1927), New York, pp. 1141-1144, 1224-1225, 1312-1314, ill.

Hardy, J. K. Full scale measurement of lift and drag of a Bristol Fighter with slotted upper wings and standard lower wings.

Aeronautical Research Committee, Reports and Memoranda, No. 1073, (Ae. 255), Dec, 1926, London, 1927, pp. 3, table, diagr.

- Full scale measurements of lift and drag of the Fokker V.VII-3M monoplane.

Aeronautical Research Committee, Reports and Memoranda, No. 1096 (Ae. 275), Apr., 1927, London, 1927, pp. 4, tabls., ill., diagr.

--Full scale tests of a suspended air log.

Aeronautical Research Committee, Reports and Memoranda, No. 1074 (Ae. 256), Dec, 1926, London, 1927, pp. 3, ill., diagr.

Harmel, Falk. Flight training in the army.

Popular Aviation, Vol. 1, No. 4 (Nov. 1927), Chicago, pp. 11-14, 61, ill.

Harper, J. W. French aviators.

Literary Digest, Vol. 94 (July 2, 1927), New York, p. 32.

Harris, R. G., and C. Howarth. Full scale determination of the lift and drag of an Avro type 504 K at large angles of incidence and comparison with model results.

Techn. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 253-259, ill., tabls.

--See Clark, B. D., R. G. Harris, and L. E. Caygill: Full scale and model

measurements of lift and drag of Bristol Fighter with R. A. F. 31 wings. *

--See Jones, E. T., L. E. Caygill, R. G. Harris, and H. M. Garner: Lift

and drag of the Bristol Fighter with Fairey variable camber wings.

Harris, R. G., and C. Howarth. See Nutt, A. E. Woodward, R. G. Harris, and L. E. Cay gill: Full scale and model measurements of lift and drag of Bristol Fighter with R. A. F. 30 wings.

Hart, B. H. Liddell. The remaking of modern armies. London, Aeronautics, Ltd., 1927, pp. 312.

H artshell, H. Laying out an airway.

Aviation, Vol. 22, No. 6 (Feb. 7, 1927), New York, pp. 269-271, ill.

Hartshorn. See Tie rods: Hartshorn's square section tie rods.

Hartshorn, A. S. The characteristics of certain aerofoil sections for infinite aspect ratio.

Aeronautical Research Committee, Reports and Memoranda, No. 1072 (Ae. 254), Nov. 1926, London, 1927, pp. 9, tabls., diagr.

- Further wind tunnel tests of a slot and aileron control on a wing of R. A. F.

31 section.

Aeronautical Research Committee, Reports and Memoranda No. 1090 (Ae. 269), Feb. 1927, London, 1927, pp. 9, tabls., diagr.

Hartshorn, A. S., and H. Davies. Test of two aerofoils, R. A. F. 27 and R. A. F. 28.

Techn. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 237-247, diagr., tabls.

Hartshorn, A. S. Wind tunnel tests on aerofoil R. A. F. 34 at negative incidences.

Aeronautical Research Committee, Reports and Memoranda, No. 1087 (Ae. 266), Feb. 1927, London, 1927, pp. 4, tabls., diagr.

- See Bradfield, F. B., and A. S. Hartshorn: Model tests of a combined

slot and aileron control on a wing of R. A. F. 15 section. Push forward type of auxiliary.

- See Bradfield, F. B., and A. S. Hartshorn: Slot and aileron control on a

wing of R. A. F. 31 section with various types of ailerons.

- See Bradfield, F. B., A. S. Hartshorn, and L. Caygil: Wind channel tests

of slot and aileron control on a wing of R. A. F. 15 section.

--See Douglas, G. P., F. B. Bradfield, and A. S. Hartshorn: The lateral

control of a biplane by combined use of ailerons and varying leading edge slots.

Hartson, Joseph T. A bright outlook for 1927.

Aviation, Vol. 22, No. 11 (Mar. 14, 1927), New York, pp. 517-518.

- Hero of all ocean flights; story of the Wright Whirlwind engine.

Review of Reviews, Vol. 76 (Aug. 1927), New York, pp. 174-176, ill.

Haus, Fr. La stabilité dynamique des avions.

La Technique Aéronautique, 18e année, n. s. No. 72 (15 oct. 1927), Paris, pp. 258-277, ill.

Hausen, J. Dauerbruch. Fachtagung der Deutschen Gesellschaft für Metallkunde in Berlin am 21. April 1927.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 12. Heft (28. Juni 1927), München, p. 275.

- Probleme der Korrosionsforschung und des Metallschutzes auf der Jahresversammlung 1926 des Reichsausschusses für Metallschutz.

Zeitschr, Flugt. Motorluftsch., 18, Jahrg., 9. Heft (14. Mai 1927), München, pp. 201-203, ill.

Hausfelder, Ludwig. High-speed oil engines for vehicles, Engines with external atomization of the fuel. Engines with internal atomization of the fuel. Hot-bulb engines. Diesel engines.

National Advisory Committee for Aeronautics, Technical Memorandums No. 397, February 1927, Washington, pp. 32, ill. From "Der Motorwagen," August 31, 1926.

- High-speed oil engines for vehicles. Part II.

National Advisory Committee for Aeronautics, Technical Memorandums No. 403, March 1927, Washington, pp. 46, ill. From "Der Motorwagen" September 30, and December 10,1926.

- High-speed oil engines for vehicles. Part III.

National Advisory Committee for Aeronautics, Technical Memorandums No. 410, May 1927, Washington, pp. 32, ill. From "Der Motorwagen" December 20 and 31, and January 10,1927.

Hawaii. The Army flight to Hawaii.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, pp. 16-18, ill.

- Costly adventuring.

Outlook, Vol. 146 (Aug. 31, 1927), New York, pp. 555-556, ill.

- Flight to Honolulu by L. J. Maitland and A. F. Hegenberger.

Current History Magazine of N. Y. Times, Vol. 26 (Aug. 1927), New York, pp. 750-752, ill., map.

-- Hawaiian hop; Maitland and Hegenberger.

Literary Digest, Vol. 94 (July 9, 1927), New York, pp. 8-9, ill.

- The Honolulu flight.

Popular Aviation, Vol. 1, No. 1 (Aug. 1927), Chicago, pp. 14-15, ill., port.

- Maitland and Hegenberger fly to Hawaii.

Aviation, Vol. 23, No. 2 (July 11, 1927), New York, pp. 72-73, ill.

- Second flight to Hawaii.

Outlook, Vol. 146 (July 27, 1927), New York, p. 395.

- The second Hawaiian hop.

Popular Aviation, Vol. 1, No. 2 (Sept. 1927), Chicago, pp. 9-10, ill.

- Smith-Bronte Hawaiian flight.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, pp. 130-131, 234, ill.

- Trans-Pacific air Derby.

Literary Digest, Vol. 94 (Aug. 27,1927), New York, p. 10.

- The winners and losers in the race to Hawaii.

U. S. Air Services, Vol. 12, No. 9 (Sept. 1927), Washington, D. C, pp. 26-27, ill.

- See Boone, Andrew R.: Radio beacons to guide Hawaiian fliers.

- See California to Hawaii: Smith and Bronte fly single engined plane from

California to Hawaii.

Hawaiian Islands. Sowing forests from airplanes in the Hawaiian Islands. Slipstream, Vol. 8, No. 3 (Mar. 1927), Dayton, Ohio, pp. 18-19, ill,

Hawker, Harry. See History: Famous flights. The NC-4 trip.

"Hawks." "Hawks" available with four different power plants.

u. S. Air Services, Vol. 12, No. 2 (Feb. 1927), Washington, D. C, pp. 30-31, ill.

Hayes, R. M. The possibilities of metal construction with special reference to the metal skin.

Journ. Roy. Aer. Soc, Vol. 31, No. 203 (Nov. 1927), London, pp. 1026-1028.

Heath. The Heath parasol.

Aviation, Vol. 22, No. 9 (Feb. 28, 1927), New York, pp. 423-424, ill., diagr.

Heemstede, I. L. van den Berch van. 1927.

Het Vliegveld, 11 de Jaarg., No. 1 (Jan. 1927), Amsterdam, p. 7.

Hegardt, G. B. Oakland municipal airport.

Aero Digest, Vol. 11, No. 5 (Dec. 1927), New York, pp. 676, 678, ill., map.

Hegenberger, Albert. See Hawaii: Maitland and Hegenberger fly to Hawaii.

- See Maitland et Hegenberger: La navigation de Maitland et Hagenberger

dans le Pacifique.

- See Pacific: 3800 kilomètres sans escale au-dessus du Pacifique.

- See Hawaii: The Honolulu flight.

Hegge, Zijnen, B. G. van der. Determining the velocity distribution in the boundary layer of an airfoil fitted with a rotary cylinder.

National Advisory Committee for Aeronautics, Technical Memorandums No. 411, May 1927, Washington, pp. 15, ill., diagrs., tables.

Reprot A 129 of the " Rijks-Studiedienst voor de Lüchtvaart," Amsterdam. Reprint from "De Ingenieur," October 23, 1926.

- Experiments on the velocity distribution in the boundary layer of an

aerofoil with rotary cylinder.

Verslagen en Verhandelingen van den Rijks-Studiedienst, voor de Lüchtvaart, Rapport, A 129, Deel 4-1927, Amsterdam, pp. 47-65, ill., diagrs., tables.

Heinicke. See Hydravion: Het Heinicke valscherm.

Heinkel. A German newspaper carrier H. D. 40.

Flight, Vol. 19, No. 44 (Nov. 3, 1927), London, pp. 760-761, ill., diagr.

- The Heinkel commercial airplane H. D. 40.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 64, Washington, December 1927, pp. 7, ill.

- The Heinkel HD-20 observation plane.

Aviation, Vol. 22, No. 6 (Feb. 7,1927), New York, pp. 276-277, ill., diagr.

- Heinkel H. E. 5 commercial seaplane. Winner of the 1926 German

seaplane contest at Warnemünde.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 38, Washington, April 1927, pp. 6, ill.

Heinze, E. P. A. "Rotating plane" designed for safe landing in case of failure. Automotive Industries, Vol. 57, No. 7 (Aug. 13,1927), New York, pp. 227, ill.

Hek, G. van 't. De tocht van de H-Nadp en de oudere jeugd.

Het Vliegveld, Ilde Jaarg., No, 8 (Aug. 1927), Amsterdam, pp. 268-270, ill.

Helicopters. See Lamé, M. : Discussion sur les hélicoptères.

- See Margoulis, W.: Nouvelles recherches expérimentales sur les hélices

d'hélicoptères.

Hellyer, F. E. A new type of combined airscrew hub dynamometer and thrust meter.

Journ. Roy. Aer. Soc, Vol. 31, No. 204 (Dec. 1927), London, pp. 1150-1168, ill., diagr.

Helmbold, H. B., und H. Lerbs. Modellversuche zur Nachprüfung der Treibschrauben-Wirbeltheorie.

Werft-Reederei-Hafen, Bd. 8, Nr. 17 (Sept. 7, 1927), Berlin, pp. 347-350, ill.

Helmbold, H. B. Eine Näherungslösung des Problems der wirtschaftlichen Luftschraube.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 1. Heft (14. Jan. 1927), München, pp. 13-15, ill.

- Eine Näherungsformed für Abwindrechnungen am Eindecker.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 1. Heft (14. Jan. 1927), München, p. 11. ill.

Helmbold, H. B. Die generalisierten Koordinaten der Flugmechanik.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 22. Heft (28. Nov. 1927), München, pp. 516-517, ill.

Hemke, Paul E. Drag of wings with end plates.

National Advisory Committee for Aeronautics, Report No. 267, August 15, 1927, Washington, Government Printing Office, 1927, pp. 13, ill., diagrs., tables.

- The measurement of pressure through tubes in pressure distribution tests.

National Advisory Committee for Aeronautics, Report No. 270, October 31, 1927, Washington, Government Printing Office, 1927, pp. 11, ill., diagrs.

Hemming, H. Treasure hunting by air.

Airways, Vol. 3, No. 6 (Feb. 1927), London, pp. 178-180, ill.

Henderson, G. L. P. Joy-riding in Scandinavia.

Airways, Vol. 3, No. 7 (Mar. 1927), London, pp. 221-223, ill.

Henderson, George R. Why is a flight test section—and how?

U. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. C, pp. 15-19.

Henderson, P. Airplane, a new tool of business.

Magazines of Business, Vol. 52 (Sept. 1927), Chicago, pp. 259-262, ill., map.

Hendon. The R. A. F. display at Hendon.

Airways, Vol. 3, No. 11 (July 1927), London, pp. 353-354, ill.

- See Koppen, Joachim: Was zeigten die diesjährigen Flugvorführungen

in Hendon.

Henrey, R. German aviation and its lessons.

Nineteenth Century and After, Vol. 101 (Feb. 1927), New York, pp. 184-190.

Henrici, S. Weltluftverkehr und Weltwirtschaft.

Die Luftwacht, Heft 10, Okt. 1927, Berlin, pp. 549-559, ill.

Henrickson, H. B. Tension experiments on diaphragm metals.

National Advisory Committee for Aeronautics, Technical Notes No. 261, Washington, August 1927, pp. 14, ill., diagrs.

Henshaw, P. B. Valve steels.

Journ. Roy. Aer. Soc, Vol. 31, No. 195 (Mar. 1927), London, pp. 187-217, ill., diagr., tabls.

Herbert Schiff trophy. See Gavin, Arthur: Lieut. Arthur Gavin, U. S. N. wins Herbert Schiff trophy for 1927.

Hercules. The D. H, 66 "Hercules" aeroplane.

Automobile Engineer, Vol. 17, No. 228 (May 1927), London, pp. 158-164, ill.

Herrick, Myron T. See Lindbergh, Charles Augustus: "We," by Charles A. Lindbergh; the famous flier's own story of his life and his transatlantic flight, together with his views on the future of aviation, with a foreword by Myron T. Herrick.

Herrmann, H. Seaplane floats and hulls.

National Advisory Committee for Aeronautics, Technical Memorandums No. 426, August 1927, Washington, pp. 29, ill., tables.

National Advisory Committee for Aeronautics, Technical Memorandums No. 427, September 1927, Washington, pp. 27, ill.

From "Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt" December 1926.

Herrold, G. H. St. Paul's well-located airport.

American City, Vol. 37 (Nov. 1927), New York, pp. 632-633, ill.

Hess; Fritz. Schweizerisches Luftrecht. Zurich, Editions d'Aero-Revue.

Hess, Fritz. The Hess Blue Bird.

Aviation, Vol. 22, No. 5 (Jan. 31, 1927), New York, pp. 228-229, ill. Aero Digest, Vol. 10, No. 2 (Feb. 1927), New York, p. 136, ill.

Hesselbach, B. Uber" die gekoppelten Schwingungen von Tragflügel und Verwindungsklappe.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 20. Heft (28. Okt. 1927), München, pp. 465-470, ill.

Het Vliegveld. See Fuld, E.: Na tien jaren.

--See Wolff, E. B.: Bij het jubileum van "Het Vliegveld."

Heywood starter. The Heywood injector starter.

Aviation, Vol. 23, No. 24 (Dec. 12, 1927), New York, pp. 1408-1409, ill.

HiCKY, D. W. Requiem for lost aviators.

Literary Digest, Vol. 95 (Oct. 15, 1927), New York, p. 36.

Higgins, George Judson. The characteristics of the N. A. C. A. 97, Clark Y, and N. A. C. A. -M6 airfoils with particular reference to the angle of attack. National Advisory Committee for Aeronautics, Technical Notes No. 270, Washington, December 1927, pp. 4, ill., diagrs.

Higgins, George Judson and Eastman N. Jacobs. The effect of a flap and ailerons on the N. A. C. A.-M6 airfoil section.

National Advisory Committee for Aeronautics, Report No. 260, May 23, 1927, Washington, Government Printing Office, 1927, pp. 18, ill., diagrs., tables.

Higgins, George Judson. The effect of the walls in closed type wind tunnels.

National Advisory Committee for Aeronautics, Report No. 275, November 30, 1927, Washington, Government Printing Office, 1927, pp. 18, 111., diagrs., tables.

--Tests of the N. P. l. airship models in the variable density wind tunnel.

National Advisory Committee for Aeronautics, Technical Notes No. 264, Washington, September 1927, pp. 8, ill., diagrs., tables.

Higgins, George Judson, W. S. Diehl, and George L. DeFoe. Tests on models of three British airplanes in the variable density wind tunnel.

National Advisory Committee for Acronatics, Report No. 279, March 6, 1928, Washington, Government Printing Office, 1928, pp. 27, ill., diagrs., tables.

Higgins, George Judson. Wall interference in closed type wind tunnels.

National Advisory Committee for Aeronautics, Technical Notes No. 256, Washington, March 1927, pp. 6, diagrs.

Hildesheim, Erik.. The Copenhagen aero show.

Aeroplane, Vol. 33, No. 8 (Aug. 24, 1927), London, pp. 268-272, ill.

- The Paris aero show.

Aero Field, Vol. 1, No. 10 (Jan. 1927), London, pp. 218-219, ill.

Hill, G. T. R. Flying positions of control surfaces of Bristol Fighter.

Aeronautical Research Committee, Reports and Memoranda, No. 1060 (Ae. 243), May 1926, London, 1927, p. 6, diagr.

Hill, Thomas L. The formation of aero clubs.

Popular Aviation, Vol. 1, No. 3 (Oct. 1927), Chicago, p. 15.

Hinkler, Bert. Hinkler's flight to Latvia.

Flight, Vol. 19, No. 39 (Sept. 29, 1927), London, pp. 685-686, ill.

Hinton, W. First trans-Atlantic flight.

Annals, American Academy of Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 94-100.

Current History Magazine of N. Y. Times, Vol. 26 (July 1927), New York, pp. 548-550.

- What Lindbergh is doing for aviation.

Outlook, Vol. 146 (June 22, 1927), New York, pp. 246-249, ill.

- What you do when you fly.

Outloook, Vol. 147 (Sept. 28, 1927), New York, pp. 116-118, ill.

Hirschauer, L., and Ch. Dollfus. L'Année aéronautique 1926-1927. 8e année.

Paris, Dunod, éditeur, 1927, pp. 418, ill.

Hisso engine. Ye good old Hisso.

Slipstream, Vol. 8, No. 6 (June 1927), Dayton, Ohio, pp. 10, 34, ill. 1

History. ' Air conquest.

Natl. Geogr. Mag., Vol. 52 (Aug. 1927), Washington, D. C, pp. 233-242, ill.

- Famous flights. The NC-4 trip.

Popular Aviation, Vol. 1, No. 5 (Dec. 1927), Chicago, pp. 27-31, ill.

- Invention, transportation, the flying machine.

Oil-Power, Vol. 2, No. 7 (Aug. 1927), New York, pp. 99-110, ill.

- Outline of aviation.

Literary Digest, Vol. 93 (June 25, 1927), New York, pp. 9-10.

- When an Albany-New York flight was a nine-days' wonder.

Literary Digest, Vol. 93 (May 21, 1927), New York, pp. 86-88.

- When wings were young; photographs.

Collier's, Vol. 80 (Sept. 24, 1927), Springfield, Ohio, pp. 18-19.

- See Brown, Cecil Leonard Morley: The conquest of the air; an historical

survey.

- See Claudy, Carl H.: The Army's first airplane.

- See Coyler, D. B.: The air mail service.

- See Davis, Warren Jefferson: The world's wings.

-- See Driggs, Laurence La Tourette: Heroes of aviation.

- See Frazer, Chelsea Curtis: Heroes of the air.

- See Giacomelli, R. : Leonardo da Vinci e il volo meccanico.

- See Gliders: Gliders and motorless planes.

- See Hydravion : Historische luchtreizen over het Kanaal.

—;— See Hydravion: Over den luchtweg naar de Noordpool.

- See Marsh, W. L. : The first screw propeller.

- See United States : Famous flights. The nonstop flight across America.

Hoare, Samuel John Gurney. Estimates speech of the Secretary of State for Air.

Flight, Vol. 19, No. 11 (Mar. 17, 1927), London, pp. 161-162.

- Flight to India of the Secretary of State for air.

Quarterly Journal of the Royal Meteorological Society, Vol; 53, No. 233 (July 1927), London, pp. 233-240.

- India by air, with an intrpduction Lady Maud Hoare.

London, New York, Longmans, Green and Co., ltd., 1927, pp. xix, 155, ill.

Höver, J. See Amundsen, Ronald Engelbregt Gravning, and Lincoln Ellsworth: The first flight across the polar sea.—The hangar and the mooring-masts, by J. Höver.

Holbrook, H. A. Why not fly?

Outlook, Vol. 146 (June 29, 1927), New York, pp. 286-288, ill.

Holland. See Steup, A.: Met de Hollandsche Escadrille naar de Internationale Vliegwedstrijden te Zürich 12-21 Augustus 1927.

- See Koppen, G. A. : Holland-Indië v. v.

Holland, Maurice. Civil aviation in Japan.

Slipstream, Vol. 8, No. 11 (Nov. 1927), Dayton, Ohio, p. 28, ill.

Holland, Samuel K., Jr. Stinson Detroiters grow popular.

Aviation, Vol. 22, No. 15 (Apr. 11, 1927), New York, pp. 719-721, ill.

- Stinson-Detroiters' record.

Aero Digest, Vol. 10, No. 5 (May 1927), New York, pp. 382, 384, 486-487, ill.

Hollingsworth, F. N. An experimental airport.

Popular Aviation, Vol. 1, No. 4 (Nov. 1927), Chicago, p. 54, port.

Hollyhock, W. S. Some notes on the assembly of wings.

Flight, Vol. 19, No. 52 (Dec. 29, 1927), London, pp. 880d-880e.

Holman, C. W. C. W. Holman wins Class A air derby.

Aviation, Vol. 23, No. 14 (Oct. 3, 1927), New York, pp. 806-807, ill.

Holmes, Paul J. Aviation in the Argentine.

Aviation, Vol. 22, No. 6 (Feb. 7, 1927), New York, pp. 272-274, ill.

- What price speed?

U. S. Air Services, Vol. 12, No. 7 (July 1927), Washington, D. C, pp. 31-32.

Homewood, J. Building the Ryan monoplane.

Machinery, Vol. 34, No. 2 (Oct. 1927), New York, pp. 126-128, ill.

Honolulu flight. Army plans Honolulu flight.

Slipstream, Vol. 8, No. 7 (July 1927), Dayton, Ohio, p. 39, ill.

Hooton. The Hooton air pageant.

. Flight, Vol. 19, No. 39 (Sept. 29, 1927), London, pp. 682-684, ill.

Hoppin, F. S. Over the hills and far away; balloon jumping as a popular sport.

Forum, Vol. 78 (Aug. 1927), New York, pp. 173-180, ill.

Horizon. See Brion, M.: La grille d'horizon.

Horn, A. J. Airport financed by popular subscription, Schenectady, N. Y. American City, Vol. 37 (July 1927), New York, p. 93.

Horse power. See Watter, Michael: Determination of available horse power.

Horsfall,'Jessie E. First flight.

Annals, American Academy Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 14-19.

- Lindbergh's start for Paris.

Aero Digest, Vol. 10, No. 6 (June 1927), New York, pp. 503-508, ill.

- Wright's first flight at Kitty Hawk.

Current History Magazine of N. Y. Times, Vol. 26.(July 1927), New York, pp. 556-557.

Horton, R. Harland. Certain aspects of commercial flying.

U.S. Air Services, Vol. 12, No. 11 (Nov. 1927), Washington, D. C, pp. 28-30, map.

Hosmer, E. A. Navigating the ship of the air.

Aviation, Vol. 23, No. 23 (Dec. 5, 1927), New York, pp. 1356-1357.

Hotine, M. Simple methods of surveying from air photographs.

Professional Papers of the Air Survey Committee, No. 3, London, H. M. Stationery Office. Reviewed in: Nature, Vol. 120, No. 3033 (Dec. 17, 1927), London, pp. 896-897.

Hovgaard, W. An airplane station in mid-Atlantic.

Engineering, Vol. 124, No. 3214 (Aug. 10,1927), London, pp. 223-224, ill.

Ho Warth, C. See Harris, R. G., and C. Howarth: Full scale determination of the lift and drag of an Avro type 504 K at large angles of incidence and comparison with model results.

Howarth, O. J, R. Climate and geography.

London, Oxford University Press, 1927, pp. 62, ill.

Howe, J. 0. What's left for air heroes to conquer.

Popular Mechanics, Vol. 48 (Oct. 1927), Chicago, pp. 642-647, ill.

Hubert, Jean. See Bouché, Henri: Jean Hubert.

- See Grimault, P.: L'ingénieur. Jean Hubert.

Hübner, G. New York-Berlin.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 11-12. Heft (14, 28. Juni 1927), München, pp. 250, 273-275, ill.

Hübner, W. Die Ergebnisse der Technischen Prüfung neuartiger Flugzeuge und Flugzeugmodelle während des Rhön-Segelflug-Wettbewerbes 1927.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 23. Heft (14. Dez. 1927), München, pp. 545-546, ill.

Hupp, Daland. The Huff Daland Cyclops.

Aviation, Vol. 22, No. 7 (Feb. 14, 1927), New York, p. 333, ill.

Hugershopf. See Krahmer, E. R.: Der Aerokartograph nach Hugershoff.

Huguenard, Magnan et Sainte-Laguë. Sur la détermination cinématographique des polaires en vol des oiseaux, des planeurs et des avions. C. R. Acad. Sei., T. 184, No. 13 (28 mars 1927), Paris, pp. 802-804, ill.

Huguenard, E. La mesure en vol des efforts et des déformations dans la charpente des avions.

L'Aérophile, 35e année, Nos. 14-16, 17-18 (ler-15 août-ler-15 sept. 1927), Paris, pp. 237-239, 273-278, ill.

Huguenard, E. A. Magnan et A. Planoil. Sur un principe nouveau permettant la réalisation d'appareils mesurant les conditions aérodynamiques du Vol des avions.

C. R. Acad. Sei., T. 185, No. 20 (14 nov 1927), Paris, pp. 1016-1018, ill.

Hulbert, N. J. Civil aviation.

Journal of the Institution of Aeronautical Engineers, Vol. 1, Nos. 1-3 (Jan.-Mar. 1927), London, pp. 35-36, 27-28, 19-20.

Hulls. See Eula, Antonio: Studio sistematico alla vasca di galleggianti a scafo per idrovolanti.

- See Herrmann, H.: Seaplane floats and hulls.

Humphrey, G. E. Woods. On the Empire Airway. The 2,500 miles' Cairo-Karachi service is one of the longest civil air routes in the world.

Airways, Vol. 3, No. 9 (May 1927), London, pp. 275-277, ill., map.

Humphreys, William Jackson. Fogs and clouds. London, Bailiiere, Tindall & Cox, 1927, ill.

Hunn, Clarke F. Alaska rich in pulpwood and water power. Photographic survey by Loening Amphibians shows vast stores of timber suitable for paper manufacture.

U. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. C, pp. 36-41, ill.

Huntington, Hubert S. Aviation.

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, pp. 530, 532, chart.

Huth, W. Die Entwicklung des deutschen Verkehrsflugzeuges.

Zeitschr. Ver. deutsch. Ing., Bd. 71, Nr. 19 (7. Mai 1927), Berlin, pp. 629-635.

Hydravion. De baanbrekers der dynamische luchtvaart X Ferdinand Ferber. Het Vliegveld, Ilde Jaarg., No. 4 (April 1927), Amsterdam, pp. 126-131, ill.

- Het bedrog van Callizo.

Het Vliegveld, Ilde Jaarg., No. 9 (Sept. 1927), Amsterdam, pp. 301-302.

- Het Heinicke valscherm.

Het Vliegveld, Ilde Jaarg., No. 12 (Dec. 1927), Amsterdam, pp. 408-410, ill.

Hydravion. Historische luchtreizen over het Kanaal.

Het Vliegveld, Ilde Jaarg., No. 2 (Feb. 1927), Amsterdam, pp. 63-68. No. 3 (Maart 1927), pp. 107-108.

--De Indië-Vlucht van Koppen en Frijns.

Het, Vliegveld, Ilde Jaarg., No. 10 (Oct. 1927), Amsterdam, pp. 345-346, ill.

- De Luchtvaart-Tentoonstelling te Kopenhagen.

Het Vliegveld, Ilde Jaarg., No. 9 (Sept. 1927), Amsterdam, pp. 297-299.

- De Nederlandsche vliegtuig-nijverheid in de jaren 1919-1926.

Het Vliegveld, Ilde Jaarg., No. 3 (Maart 1927), Amsterdam, pp. 85-90, ill.

- De Oceaanvlucht van commander Richard Byrd.

Het Vliegveld, Ilde Jaarg., No. 7 (Juli 1927), Amsterdam, pp. 214-218, ill.

- Een onbekend voorlooper der luchtvaart : Jean Jacques Rousseau.

Het Vliegveld, Ilde Jaarg., No. 5 (Mei 1927), Amsterdam, pp. 165-166.

--Over den Atlantischen Oceaan.

Het Vliegveld, Ilde Jaarg., No. 6 (Juni 1927), Amsterdam, pp. 190-197, ill.

- Over den luchtweg naar de Noordpool.

Het Vliegveld, Ilde Jaarg. No. 1 (Jan. 1927), Amsterdam, pp. 12-17, ill. De expeditie van Andrée, Strindberg en Fraenkel, met den ballon "Ormen" ondernomen in Juli van 1897.

- De retour-vlucht Amsterdam-Batavia door de K. L. M.—vliegers Gey-

sendorffer en Schölte.

Het Vliegveld, Ilde Jaarg., No. 7 (Juli 1927), Amsterdam, pp. 225-226.

- De terugkeer van de H-Nadp uit Indie.

Het Vliegveld, Ilde Jaarg., No. 8 (Aug. 1927), Amsterdam, pp. 250-256, ill.

- De terugkeer van de "Postduif

Het Vliegveld, Ilde Jaarg., No. 11 (Nov. 1927), Amsterdam, pp. 370-374, ill.

Hydrodynamics. See Carafoli, Elie: Sur une remarque au sujet du théorème des forces vives appliqué à l'hydrodynamique rationnelle.

Hydrogen. Hydrogen as an airship fuel.

Scient. Amer., Vol. 136 (Apr. 1927), New York, p. 274.

- See Mucklow, G. F.: The effect of reduced intake-air pressure and of

hydrogen on the performance of a solid injection oil engine.

- See Tanaka, Yoshio, and Yûzabro Nagai: Studies on inflammability of

hydrogen.

Hydrography. See Ramsey, Logan C.: Aerial photography and its relation to hydrography.

Hydroplanes. See Seaplanes.

Hyland, Lawrence A. Radio and air commerce.

Aviation, Vol. 23, Nos. 22-24, 26 (Nov. 28, Dec. 5, 12, 26, 1927), New York, pp. 1282-1285, 1347-1350, 1410-1416, 1526-1529, ill., map.

I

Ide, John Jay. Characteristics of aircraft at Paris show.

Aviation, Vol. 22, No. 2 (Jan. 10, 1927), New York, pp. 90-91, tables.

- Highlights of the Paris show.

Aviation, Vol. 22, No. 2 (Jan. 10,1927), New York, pp. 78-80, ill.

Iesman, J. W. The Iesman duralumin rivet.

Aviation, Vol. 22, No. 16 (Apr. 18, 1927), New York, p. 777, diagr.

- A new rivet for aircraft construction.

Mechanical Engineering, Vol. 49, No. 7 (July 1927), New York, p. 726, ill.

Illies, H. Ganzmetall-Luftschiffe.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 3. Heft (14. Feb. 1927), München, pp. 72-73, ill.

India. De eerste passagier per K. L. M. naar Indie.

Het Vliegveld, Ilde Jaarg., No. 6 (Juni 1927), Amsterdam, pp. 182-183, ill.

- The flight towards India. Carr and Gillman cover 3,419 miles.

Flight, Vol. 19, No. 21 (May 26, 1927), London, pp. 324-330, ill., map.

- De Vlught naar Indië en terug.

Het Vliegveld, Ilde Jaarg., No. 8 (Aug. 1927), Amsterdam, pp. 259-263, ill.

- See Eist, F. v. d.: Burgerlijke luchtvaart in Nederlandsch-Indië.

- See Hoare, Samuel John Gurney: India by air, with an introduction by

Lady Maud Hoare.

- See Hydravion: De terugkeer van de H-Nadp nit Indië.

Insley, R. Air-cooled engines for aircraft; historical survey of design and development in America.

Scient. Amer. Vol. 137 (Aug. 1927), New York, pp. 148-151, ill., diagr.

Instone, Samuel. The race for air supremacy.

Airways, Vol. 3, No. 6 (Feb. 1927), London, p. 172, ill.

Instrument board. See Equipment: The new Consolidated instrument board.

Instruments. Acoustic height-indicator.

Scient. Amer. Vol. 136 (June 1927), New York, pp. 418-419, diagr.

- Airplane instruments.

Popular Aviation, Vol. 1, No. 5 (Dec. 1927), Chicago, pp. 43-44, 64, ill.

- See Barr, Guy: The air bubble viscometer.

- See Colvin, Charles W.: Les instruments à lecture verticale.

- See Engine recorders: Engine revolution recorder for aeroplanes.

- See Eredia, F. : Un nuovo tipo di anemometro.

- See Fry: The Fry liquid gauge.

- See Grenier, P.: Un traceur de route pour aéronef: TAutoestimographe

Mengden.

- See H. M. P.: L'accélérographe H. M. P.

- See Huguenard, E.: La mesure en vol des efforts et des déformations dans

la charpente des avions.

- See Lindbergh, Charles Augustus: Instruments used by Captain Lindbergh.

- See Ower, E., and F. C. Johansen: The design of pitot-static tubes.

- See Simmons, L. F. G., and A. Bailey: Note on a hot-wire speed and direction meter.

Insurance. Aviation insurance policies liberalized.

Aero Digest, Vol. 10, No. 1 (Jan. 1927), New York, p. 42.

- A diversion on insurance.

Flight, Vol. 19, No. 17 (Apr. 28, 1927), London, p. 25f ■

■- Insurance for pilots.

Aeroplane, Vol. 33, No. 25 (Dec. 21, 1927), London, p. 814.

- Life insurance for those who fly.

Aviation, Vol. 22, No. 1 (May 2,1927), New York, p. 924.

Insurance. See Vickery, C. C: Aviation insurance.

Integrator. See Janzer: "Integrator"-Maschine zum Kopieren von Fliegerfilmen am Bande.

International Air Congress. The International Air Congress at Rome. Aeroplane, Vol. 33, No. 20 (Nov. 16,1927), London, p. 666.

International Aircraft Cor. The F.17 is an open cockpit biplane suitable for an 0X5 or 150 H. P. Hisso engine.

Aviation, Vol. 23, No. 6 (Aug. 8,1927), New York, pp. 308-309, ill.

International Aviation Peace Jubilee. International Aviation Peace Jubilee draws large attendance.

Aviation, Vol. 23, No. 4 (July 25, 1927), New York, p. 203.

International Commission for Air Navigation. Convention relating to the regulation of aerial navigation dated 13th October 1919. Paris, December 1927, pp. 76, ill.

- The International Commission for Air Navigation.

Flight, Vol. 19, No. 18 (May 5,1927), London, p. 273.

- On the I. C. A. N.

Aeroplane, Vol. 32, No. 18 (May 4, 1927), London, pp. 485-490.

Internationale Luftfahrt-Ausstellung. See Krupp, G.: "Internationale Luftfahrt-Ausstellung Berlin 1928 " (IIa 1928).

Internationale Studiengesellschaft zur Erforschung der Arktis mit dem Luftschiff. Primer Congreso de la " Internationale Studiengesellschaft zur Erforschung der Arktis mit dem Luftschiff." (Istugedal.)

Ibérica, Año 14, Num. 661 (15 enero 1927), Barcelona, pp. 36-38.

- See Scheve, G. v.: Die Internationale Studiengesellschaft zur Erforschung

der Arktis mit dem Luftschiff, E. V.

Internationale Studiengesellschaft zur Erforschung der Arktis mit dem Luftschiff (Aeroartic). Verhandlungen der I. ordentl. Versammlung in Berlin 9. bis 13. November 1926. Herausgegeben im Auftrage der Studiengesellschaft von Dr. Leonid Breitfuss.

Petermanns Mitteilungen, Ergänzungsheft Nr. 191, Gotha, Verlag Justus Perthes, 1927, pp. vi, 115, ill.

Ireland amphibian. The Ireland amphibian.

Aero Digest, Vol. 11, No. 6 (Dec. 1927), New York, p. 692, ill.

Aviation, Vol. 23, No. 22 (Nov. 28, 1927), New York, pp. 1291-1293, ill., diagr.

Irvin, Leslie Le Roy. The Caterpillar Club. The most exclusive club in the world and how to join it.

Airways, Vol. 3, No. 10 (June 1927), London, pp. 312-314, ill.

Irving, H. B., and A. S. Batson. The distribution of pressure over a biplane with wings of unequal chord and span.

Techn. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 136-150, ill., tabls.

- The effects of stagger and gap on the aerodynamic properties of biplanes

at large angles of incidence.

Aeronautical Research Committee, Reports and Memoranda, No. 1064 (Ae. 246), May, 1927, London, 1927, pp. 37, tabls., diagr.

Irving, H. B., A. S. Batson, and D. H. Williams. Model experiments on R. A. F. 31 aerofoil with Handley Page slot.

Aeronautical Research Committee, Reports and Memoranda, No. 1063 (Ae. 245), Oct. 1926, London, 1927, pp. 8, tabls., diagr.

Irving, H. B., and A. S. Batson. Some experiments on a model of a B. A. T. " Bantam " aeroplane, with special reference to spinning accidents. Part I. Longitudinal control and rolling experiments.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 437-454, diagr., tabls.

Italy. Air traffic in Italy during 1926.

Aviation, Vol. 23, No. 16 (Oct. 17, 1927), New York, pp. 934-935, ill., map. Flight, Vol. 19, No. 44 (Nov. 3, 1927), London, pp. 763-764, map.

- Le circuit italien de l'Atlantique. Le colonel De Pinedo, sur Savoia

S-55, réussit la troisième traversée de l'Atlantique Sud.

L'Aéronautique, 9me année, No. 94 (mars 1927), Paris, pp. 67-68, ill.

- Le gouvernement italien et la propagande aéronautique.

L'Aêrophile, 35e année, Nos. 1-2 (ler-15 jan. 1927), Paris, p. 22.

- Italian aircraft engines.

Automobile Engineer, Vol. 17, No. 231 (Aug. 1927), London, pp. 280-292, ill.

- Italian civil aviation.

Engineering, Vol. 123, No. 3190 (May 6, 1927), London, pp. 540-542, ill.

- The Italian service flight across sea and desert.

Flight, Vol. 19, No. 28 (July 14, 1927), London, p. 483, ill.

- Italy takes to the air.

Airways, Vol. 3, No. 12 (Aug. 1927), London, pp. 389-391, ill., map.

- Italy's air barrier.

Aeroplane, Vol. 32, No. 22 (June 1, 1927), London, pp. 633-638, ill.

- See Atlantic: Les grands raids transatlantiques.

- See Balbo, Italo: Il programma dell' aviazione Italiana nel discorso di

S. E. Balbo.

- See Baldini, Mario: Carta aeronautica d'ltalia.

- See Bülow: Der Luftkrieg während des Herbstfeldzuges in Italien 1917.

- See Caproni: L'apporto degli apparecchi Caproni all' aviazione Italiana.

Bombardamento aereo e vita in guerra di una nazione.

Ives, N. S. Tulsa's airport marker.

American City, Vol. 37 (Dec. 1927), New York, p. 801, ill.

J

Jacobs, A. M. Gentlemen unafraid.

St. Nicholas, Vol. 54 (Oct. 1927), New York, pp. 959-963, ill.

- McCook field passes into history. •

Slipstream, Vol. 8, No. 10 (Oct. 1927), Dayton, Ohio, pp. 30, 34, ill.

- Where pluck wins for aviation; test pilots of the Army air corps.

St. Nicholas, Vol. 54 (July, 1927), New York, pp. 674-678, ill.

- WiU it fly or fail?

St. Nicholas, Vol. 54 (Apr, 1927), New York, pp. 419-423, ill. Testing.

Jacobs, Eastman N. Characteristics of propeller sections tested in the variable density wind tunnel.

National Advisory Committee for Aeronautics, Report No. 259, May 16, 1927, Washington, Government Printing Office, 1927, pp. 16, diagrs., tables.

- Work in the variable density wind tunnel of the N. A. C. A.

Aviation, Vol. 23, No. 11 (Sept. 12, 1927), New York, pp. 620-623, ill., diagr.

- See Higgins, George J., and Eastman N. Jacobs: The effect of a flap and

ailerons on the N. A. C. A.-M6 airfoil section.

Jacques, P. L'aviation en Grande-Bretagne.

L'Aérophile, 35e année, Nos. 1-2 (ler-15 jan. 1927), Paris, pp.-20-21.

- La radiogoniométrie et la navigation.

L'Aérophile, 35e année, Nos. 3-4 (ler-15 fév. 1927), Paris, pp. 46-49, ill.

Jaffeux, M. Rouen-Aérien ou le Ve rallye de l'Aéro-Club de France.

L'Aérophile, 35e année, Nos. 13-14 (ler-15 juil. 1927), Paris, pp. 204-205, ill.

Jaffeux-Tissot, M. Une application inattendue de la T. S. F.

L'Aérophile, 35e année, Nos. 11-12 (ler-15 juin 1927), Paris, p. 176.

Jagers. Luchtkoeling or waterkoeling voor Jägers?

Het Vliegveld, Ilde Jaarg., No. 5 (Mei 1927), Amsterdam, pp. 166-167.

Jahrbuch. Jahrbuch fur Luftverkehr 1926-1927. München, Richard Pflaum, pp. 267.

James, W. Frank. What the Sixty-ninth Congress has done for the Air Corps.

Aero Digest, Vol. 10, No. 4 (Apr. 1927), New York, pp. 274, 347-348.

Jan-Kerguistel, Y. Deux études d'hydraviation.

Bulletin Technique du Bureau Veritas, T. 9, No. 3 (mars 1927), Paris, pp. 49-55, ill.

Janzer. "Integrator"—Maschine zum Kopieren von Fliegerfilmen am Bande.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 19. Heft (14. Okt. 1927), München, pp. 451-452, ill.

Japan. The Japanese air transportation program.

Aviation, Vol. 22, No. 13 (Mar. 28, 1927), New York, p. 620.

- See Holland, Maurice: Civil aviation in Japan.

Jenkin, C. F. High-frequency fatigue tests.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 838861, diagr., tabls.

Jenkins, F. Morley. Midland aero history in the making.

Aero Field, Vol. 2, No. 4 (July 1927), Sutton Coldfield, England, pp. 79-82, 90, ill.

Jennings, W. G., N. E. Rowe, and I. Bowen. The application of the algebraic formulae of R. & M. 1056 to problems of aircraft performance.

Aeronautical Research Committee, Reports and Memoranda, No. 1078 (Ae. 259), Dec, 1926, London, 1927, pp. 11, diagr.

Jennings, W. G. The effects of body interference on airscrew performance.

Aeronautical Research Committee, Reports and Memoranda, No. 1046 (Ae. 232) July, 1926, London, 1927, pp. 8.

- The influence of the airscrew on the aircraft characteristics of a standard

Bristol Fighter.

Aeronautical Research Committee, Reports and Memoranda, No. 1083 (Ae. 262), Jan., 1927 London, 1927, pp. 4, diagr.

Joachim, W. F., and Edward G. Beardsley. The effect of fuel and cylinder gas densities on the characteristics of fuel sprays for oil engines.

National Advisory Committee for Aeronautics, Report No. 281, March 31,1926, Washington, Government Printing Office, 1927, pp. 9, ill., diagrs.

- Factors in the design of centrifugal type injection valves for oil engines.

national Advisory Committee for Aeronautics, Report No. 268, August 22, 1927, Washington, Government Printing Office, 1927, pp. i5, ill., diagrs., tables.

Jobson, C. D. The San Francisco airport.

Aviation, Vol. 23, No. 19 (Nov. 7, 1927), New York, pp. 1102-1104, ill., map.

Johansen, F. C. See Fage, A., and F. C. Johansen. On the flow of air behind an inclined flat plate of infinite span.

- See Ower, E., and F. C. Johansen: The design of pitot-static tubes.

Johnson. An American twin-engined light 'plane "Twin 60".

Flight, Vol. 19, No. 3 (Jan. 20, 1927), London, pp. 31-32, ill.

- Flying tests of the Johnson Twin-60.

Aero Digest, Vol. 10, No. 4 (Apr. 1927), New York, p. 324, ill.

- The Johnson Twin-60 airplane.

Aviation, Vol. 22, No. 1 (Jan. 3, 1927), New York, pp. 40-44, ill.

--The Johnson twin-60 biplane.

Aeroplane, Vol. 32, No. 2 (Jan. 12,1927), London, p. 48, diagr.

- The Johnson Twin-60 grows in popularity.

Aviation, Vol. 22, No. 13 (Mar. 28, 1927) New York, pp. 621, 624, ill.

- See Dunlap, D. Earl: The Johnson twin-60.

- See Dunlap, D. Earl: The Johnson twin-6 airplane.

Jones, B. Melvill, W. S. Farren, and C. E. W. Lockyer. Preliminary experiments on two-dimensional flow rouni bodies moving through a stationary fluid.

Aeronautical Research Committee, Reports and Memoranda, No. 1065, (AE. 247) Nov. 1926, London, 1927, pp. 12, ill., diagr.

Jones, B. Melvill, and A. Trevelyan. Step-by-step calculations upon the asymmetric movements of stalled aeroplanes.

Techn. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 317338, diagr., tabls.

Jones, C. Learning to fly.

Annals, American Academy of Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 23-26.

Jones, "Casey." Review of Curtiss flying service.

Slipstream, Vol. 8, No. 3 (Mar. 1927), Dayton, Ohio, pp. 17, 21, ill.

Jones, E. T. Fuel for the Wright "Whirlwind."

Aviation, Vol. 23, No. 20 (Nov. 14, 1927), New York, pp. 1170-1172, ill.

Jones, E. T., and L. E. Caygill. Full-scale and model measurements of lift and drag of Bristol fighter with Handley Page slotted wings.

Techn. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 265-273, diagr., tabls.

Jones, E. T. A full scale determination of the angle of down wash below an aeroplane.

Aeronautical Research Committee, Reports and Memoranda, No. 1094 (Ae. 273), Apr., 1927, London, 1927, pp. 6, tabls.

Jones, E. T., L. E. Caygill, R. G. Harris, and H. M. Garner. Lift and drag of the Bristol fighter with Fairey variable camber wings.

Aeronautical Research Committee, Reports and Memoranda, No. 1085 (Ae. 264), July, 1926, London, 1927, pp. 12, tabls., diagr.

Jones, L. J. See Fage, A., and L. J. Jones: On the drag of an aerofoil for two-dimensional flow.

Jones, R. The distribution of normal pressures on a prolate spheroid.

Aeronautical Research Committee, Reports and Memoranda, No. 1061 (Ae. 244), Dec, 1925, London, 1927, pp. 87, tabls., diagr.

Joukowsky. See Loew, Gottfried: Ein Beitrag zur Systematik der Joukowsky-Profile.

- See Schrenk, O.: Systematic investigation of Joukowsky wing sections.

- See Schrenk, O.: Systematische Untersuchungen an Joukowsky-Profilen.

- See Schrenk, O.: Uber die Theorie der Joukowsky-Profile.

Junkers. Junkers airplane "G 24". All-metal commercial airplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 47, Washington, June 1927, pp. 6, ill.

- Junkers builds new passenger monoplane. Gr-31.

Aviation, Vol. 22, No. 24 (June 13, 1927), New York, pp. 1284-1285, ill.

- Junkers commercial airplane G—31.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 54, Washington, August 1927, pp 7, ill. • From "Zeitschrift des Vereines deutscher Ingenieure" May 7, 1927.

- Junkers-Grossflugzeug G 31.

Luftfahrt, 31. Jahrg., Nr. 6 (22. März 1927), Berlin, pp. 87-88, ill.

- Das Junkers-Verkehrsgrossflugzeug G 31.

J Zeitschr. Ver. deutsch. Ing., Bd. 71, Nr. 19 (7. Mai 1927), Berlin, pp. 648-650, ill.

- The latest Junkers Type G-31.

Aero Digest, Vol. 10, No. 4 (Apr. 1927), New York, p. 300, ill.

- New Junkers commercial monoplane. G 31.

Flight, Vol. 19, No. 11 (Mar. 17, 1927), London, pp. 159-160, ill.

- Travaux et programme de Junkers.

L'Aéronautique, 9me année, No. 103 (dec. 1927), Paris, pp. 399-404, ill.

- See Bertozzi-Olmeda, F., and Mario Bernasconi: L'aerobus Junkers G. 31.

- See Weidinger, Hanns: Drag measurements on a Junkers wing section.

Jurinek, Joseph M. See Poturzyn, Fischer von, und Joseph M. Jurinek: Jahrbuch für Luftverkehr 1926-27.

K

Kahn, L. L. Les bordés travaillants, en construction navale et aéronautique. Paris, Chaix, pp. 40, ill.

Kamener, S. See Wettchinkine, N., S. Kamener, N. Tchensov. Dynamique du vol (en russe).

Kamm. Neuzeitliche Entwicklungsfragen für Flugmotoren unter besonderer Berücksichtigung der Höhenmotoren.

Die Luftwacht, Heft 10, 1927, Berlin, p. 584.

Kârmàn, Th. von. Abhandlungen aus dem Aerodynamischen Institut an der Technischen Hochschule Aachen. Heft 7.

Berlin, Verlag von Julius Springer, 1927, pp. 62, ill.

- Berechnung der Druckverteilung an Luftschiffkörpern.

Abhandlungen aus dem Aerodynamischen Institut an der Technische Hochsehule Aachen, Heft 6, 1927.

Karman, Th. von und Hans Ermisch. Berechnung der Druckverteilung an Luftschiffkörpern. Von Th. v. Kärmän, und Strömungsverlauf und Druckvertailung an Widerstandskörpein in Abhängigkeit von der Kennzahl. Von Hans Ermisch.

Abhandlungen aus dem Aerodynamischen Institut an der Technische Hochschule Aachen, Heft 6, Berlin, Verlag Julius Springer, 1927, pp. 505, ill.

Kelly, Oakley G. See United States: Famous flights. The nonstop flight across Amercia.

Kelly, Paul B. Vulnerability of landing operations to air attack.

U. S. Air Services, Vol. 12, No. 10 (Oct. 1927), Washington, D. C, pp. 39-41.

Kemp, P. G. Air transportation needs in Chicago.

Journal of the Western Society Engineers, Vol. 32, No. 5 (June 1927) Chicago, pp. 170-174.

6333—28-7

Kennedy, Hugh A. Suddert. Flight to Hawaii.

Outlook, Vol. 146 (July 13, 1927), New York, p. 339.

- Dole air race to Hawaii.

Outlook, Vol. 146 (Aug. 24, 1927), New York, pp. 534-535, ill.

Kentucky. See Sheehan, Frank P.: Kentucky is entering aircraft manufacturing field.

Kentucky Cardinal. Kentucky Cardinal commercial airplane. Aero Digest, Vol. 10, No. 2 (Feb. 1927), New York, p. 135, ill. Aviation, Vol. 22, No. 4 (Jan. 24, 1927), New York, p. 180, ill.

Kenworthy, J. M. America and Britain in the air.

Independent, Vol. 118 (May 14, 1927), Boston, pp. 506-508.

- Where America leads. In private flying and air mail development America

is far ahead of Britain.

Airways, Vol. 3,No. 10 (June 1927), London, pp. 310-311, 322, ill.

Kerber, L. V. The induced drag of any biplane.

Air Corps Information Circular, Vol. 7, No. 607 (Nov. 1, 1927), pp. 5, diagr.

- A note on control surface design.

U. S. Air Services, Vol. 12, No. 2 (Feb. 1927), Washington, D. C, pp. 27-28.

- A note on the analysis of spar stresses.

U. S. Air Services, Vol. 12, No. 3 (Mar. 1927), Washington, D. C, pp. 21-22.

- See Fales, E. N., and L. V. Kerber: Tests of pneumatic means for raising

airfoil lift and critical angle.

- See Gerhardt, W. F.: A manual of flight-test procedure.

Kerr, Mark. Land, sea and air.

London, Longmans, Green & Co., Ltd., 1927, pp. 406, ill.

Keyhoe, Donald Edward. The cruise of the "Josephine Ford." 8,604 miles around the United States in the famous North Pole airplane.

U. S. Air Services, Vol. 12, No. 1 (Jan. 1927), Washington, D. C, pp. 11-16, ill.

- Lindbergh tells future of aviation.

Pop. Mech., Vol. 48 (Nov. 1927), Chicago, pp. 733-744, ill.

Keys, C. M. Summary of business for 1926, Curtiss Aeroplane & Motor Company, Inc.

Slipstream, Vol. 8, No. 4 (Apr. 1927), Dayton, Ohio, pp. 28-29. Keystone. The Keystone all-metal bomber.

Aviation, Vol. 23, No. 11 (Sept. 12, 1927), New York, pp. 596-597, ill.

- The Keystone "Pathfinder" and "Pronto."

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, pp. 542, 544, ill.

- The Keystone "Pronto."

Aviation, Vol. 23, No. 19 (Nov. 7, 1927), New York, pp. 1112-1113, ill.

Kienitz, G. A. Das Flugzeug im Dienst der Forstwirtschaft.

Die Luftwacht, Heft 4, April 1927, Berlin, pp. 201-207, ill.

Kincaid, Earle H. See Ramsey, Logan C, and Earle H. Kincaid: Analysis of weather conditions on recent transatlantic flights.

King, R. O. See Callendar, H. L., R. O. King, and C. J. Sims: Report on dopes and detonation.

"King Bird." "King Bird" airplane.

Aero Digest, Vol. 10, No. 2 (Feb. 1927), New York, p. 124, ill. Aviation, Vol. 22, No. 10 (Mar. 7, 1927), New York, p. 475, ill.

King's cup. The King's cup air race.

Flight, Vol. 19, No. 30 (July 28, 1927), London, pp. 510-512, ill., map.

- King's cup names and figures.

Aeroplane, Vol. 33, No. 4 (July 27, 1927), London, p. 126, map.

- 1927 King's cup race.

Flight, Vol. 19, No. 31 (Aug. 4, 1927), London, pp. 537-542, ill.

- On the King's cup race.

Aeroplane, Vol. 33, No. 5 (Aug. 3,1927), London, pp. 145-176, ill.

Kinner. The Kinner five-cylinder air-cooled engine.

Aviation, Vol. 23, No. 5 (Aug. 1, 1927), iSiew York, pp. 251-252, ill.

- Kinner 100 h. p. motor. K-2.

Aero Digest, Vol. 10, No. 2 (Feb. 1927), New York, p. 114, ill.

- The new Kinner engine.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, p. 212, ill.

Kinner Airster. The Kinner Airster three-place plane.

Aviation, Vol. 23, No. 9 (Aug. 29,1927), New York, p. 481, ill.

Kirkham. The Kirkham-Packard racing biplane.

Aeroplane, Vol. 33, No. 19 (Nov. 9, 1927), London, p. 648, diagr.

- Het Kirkham racetoestel.

Het Vliegveld, Ilde Jaarg., No. 12 (Dec. 1927), Amsterdam, pp. 412-413, ill.

- The Kirkham "X" racer.

Aviation, Vol. 23, No. 11 (Sept. 12, 1927), New York, pp. 585-586, ill.

Kirkup, T. A. See Townend, H. C. H., and T. A. Kirkup: Some experiments on a model of a B. A. T. "Bantam" aeroplane, with special reference to spinning accidents. Part II. Experiments on forces and moments (including rudder control).

Kirschner, A. Das Problem der Luftorganisationen in den Fremdstaaten. Nach einer Studie des italienischen Oberstleutnants Beltrami: "Indipendenza ed autonomia delle forze armate" (Rivista Aeronautica 1927 Nr. 2. Die Luftwacht, Heft 10, Okt. 1927, Berlin, pp. 544-549.

- Das Weltflugwesen im Jahre 1927. III. Luftstreitkräfte.

Die Luftwacht, Heft 12, Dez. 1927, Berlin, pp. 675-694, ill.

KiRSTE, Leon. Maximum pratique de l'agrandissement des avions commerciaux.

C. R. Acad. Sei., T. 185, No. 4 (25 juil. 1927), Paris, pp. 259-261.

Klemin, Alexander. Aeronautical education.

Annals, American Academy Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 20-22.

- The airplane of the future.

Popular Aviation, Vol. 1, No. 5 (Dec. 1927), Chicago, pp. 56-57.

-- Byrd and the America.

Scient. Amer., Vol. 137 (Sept. 1927), New York, pp. 256-258, ill., diagr.

- Flight to Honolulu.

Seien. Amer., Vol. 137 (Sept. 1927), New York, p. 258, ill.

- The flying show at Hendon, 1927.

U. S. Air Services, Vol. 12, No. 11 (Nov. 1927), Washington, D. C, pp. 35-38, ill.

- See Barber, Horatio: The aeroplane speaks, with an introduction by

Professor Alexander Klemin.

Knauss, Robert. Im Grossflugzeug nach Peking. Berlin, Luftfahrt-Verlag G. m. b. H., pp. 176, ill.

Knight, Montgomery. Wind tunnel tests on autorotation and the "Flat Spin".

National Advisory Committee for Aeronautics, Report No. 273, January 13, 1927, Washington, Government Printing Office, 1927, pp. 18, ills,, diagrs., tables.

Kobayasi, Tatuo. On the mechanism of cyclones and anticyclones, Part II.

Report of the Aeronautical Research Institute, Tokyo Imperial University, No. 20, (Vol. 2, 6) (March 1927), Tokyo, pp. 205-233, ill.

Koch, J. J. See Biezeno, C. B., J. J. Koch, en C. Koning: The influence of the ribs on the strength of the main plane spars.

Koppen, Joachim von. Unfälle beim Figurenflug und beim Trudeln sowie Vorschläge zu ihrer Vermeidung.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 13. Heft (14. Juli 1927), München, pp. 297-299.

- Was zeigten die diesjährigen Flugvorführungen in Hendon?

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 16. Heft (29. Aug. 1927), München, pp. 376-377.

Koltchougaluminium. Quelques précisions à propos du K. A. (Koltchouga-luminium).

L'Aéronautique, (L'Aérotechnique, 5e Année, No. 53), 9me année, No. 96 (mai 1927), Paris, p. 145, ill.

Koning, C., en H. J. van der Maas. Experiments on the action of the ailerons of a thick tapered wing.

Verslagen en Verhandelingen van den Rijks-Studiedienst voor de Luchtvaart, Rapport A 32, Deel 4-1927, Amsterdam, pp. 139-264, ill., diagrs., tables.

Koning, C. See Biezeno, C. B., J. J. Koch, en C. Koning: The influence of the ribs on the strength of the main plane spars.

- See Wolff, E. B., and C. Koning: Discussion of the results of the boundary-layer tests of an airfoil fitted with rotary cylinders.

- See Wolff, E. B., en C. Koning: Discussion of the results of the tests on

the boundary layer of the aerofoil with rotating cylinders.

- See Wolff, E. B., en C. Koning: Further experiments on the influence of

a rotating cylinder accommodated in a wing-section.

Koninklike Nederlandsche Vereeniging voor Luchtvaart. Het 20-Jarig bestaan der Koninklijke. Nederlandsche Vereeniging voor Luchtvaart.

Het Vliegveld, Ilde Jaarg., No. 10 (Oct. 1927), Amsterdam, pp. 332-343, ill.

Koolhoven. The Koolhoven two-seater light plane.

Aviation, Vol. 22, No. 17 (Apr. 25, 1927), New York, p. 851, diagr.

- A new Koolhoven light 'plane.

Flight, Vol. 19, No. 5 (Feb. 3, 1927), London, p. 56, diagr,

Koopmans, Swinden. Tarnung von Artilleriestellungen gegen Sicht aus der Luft.

Die Luftwacht, Heft 4, Aprü 1927, Berlin, pp. 208-210, ill.

Koppen. See Hydravion: De Indië-Vlucht van Koppen en Frijns.

Koppen, G. A. Holland-Indië v. v.

Het Vliegveld, Ilde Jaarg., No. 12 (Dec. 1927), Amsterdam, pp. 402-406, ill.

Korvin-Kroukovsky, B. V. Tail spins and flat spins.

Aviation, Vol. 23, No. 3 (July 18, 1927), New York, pp. 152-157, diagr., tabls.

Krahmer, E. R. Der Aerokartograph nach Hugershoff.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 9. Heft (14. Mai 1927), München, pp. 203-205, ill.

Kreuel, Ernst. Stand und Aussichten des deutschen Luftverkehrs.

Die Luftwacht, Heft 4, April 1927, Berlin, pp. 224-226, ill.

- Das Weltflugwesen im Jahre 1927. I. Weltluftverkehr.

Die Luftwacht, Heft 12, Dez. 1927, Berlin, pp. 657-667, ill.

Kreider-Reisner. The Kreider-Reisner "Challenger."

Aviation, Vol. 23, No. 14 (Oct. 3, 1927), New York, pp. 824-825, ill.

Krügner, H. Motoren für Höhenflugzeuge.

Die Luftwacht, Heft 7, 8, Juli, Aug. 1927, Berlin, pp. 401-404, 470-473, ill.

Krupp, G. "Internationale Luftfahrt-Ausstellung Berlin 1928" (Ha 1928).

Zeitschr. Flugt. Mortorluftsch., 18. Jahrg., 15. Heft (16. Aug. 1927), München, pp. 361-362.

- Sachsenflug 1927.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 15. Heft (16. Aug. 1927), München, p. 361.

--Zur Eröffnung der Zentralbibliothek der Deutschen Luftfahrt.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 19. Heft (14. Okt. 1927), München, pp. 450-451.

Kuhn, Arthur Kline. Projects of the American Institute of International Law: Transit by land, waterways, and air.

American Journal of International Law, Vol. 21, 1927, Concord, N. H., pp. 123-126.

Kuipers, C. Lorraine-Dietrich motoren.

Het Vliegveld, Ilde Jaarg., No. 4 (April 1927), Amsterdam, pp. 118-121, ill.

-Motoren voor sportvliegtuigen. III.

Het Vliegveld, Ilde Jaarg., No. 2 (Feb. 1927), Amsterdam, pp. 50-54, ill.

Kusterer, M. Colonel Lindbergh sells aviation.

Outlook, Vol. 147 (Dec. 7, 1927), New York, pp. 430-431, ill.

L

LZ 127. New Zeppelin will probably fly around the world.

U. S. Air Services, Vol. 12, No. 5 (May 1927), Washington, D. C, p. 34.

La Cierva, Juan de. See Cierva, Juan de la.

Laboratories. See Cournot, J.: Le laboratoire de construction aéronautique.

La Roe, Arthur. The physical standard of the new air regulations. Aero Digest, Vol. 10, No. 3 (Mar. 1927), New York, pp. 178, 249-250.

-Pilots' physical tests.

Aero Digest, Vol. 10, No. 4 (Apr. 1927), New York, pp. 284, 352-356.

Lachmann, G. Stall-proof airplanes.

National Advisory Committee for Aeronautics, Technical Memorandums, No. 393, January 1927, Washington, pp. 14, ill.

From Yearbook of the "Wissenschaftlichen Gesellschaft für Luftfahrt," 1925 ("Berichte und Abhandlungen der W. G. L," May, 1926).

Lacrotte, Nazaire. Pour prévenir les conséquences des chutes d'avion.

La Technique Aéronautique, 18e année, n. s. No. 65 (15 mars 1927), Paris, pp. 84-90, ill.

Lademann, R. Zum Raketenproblem.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 8 Heft (28. April 1927), München, pp. 177-181, ill., diagrs., tables.

Laine, André. L'aviation pour tous. Préface de P. Painlevé. Paris, Delagrave, 1927, pp. 126, ill., diagrs.

Laird. Laird commercial airplanes.

Aero Digest, Vol. 11, No. 6. (Dec. 1927) New York, pp. 686, 688, ill., diagr.

- "Laird Whirlwind" a fine commercial plane.

U. S. Air Services, Vol. 12, No. 5 (May 1927), Washington, D. C, p. 39, ill.

Lallier, Roger. Par les airs. Histoires d'aéronautes et d'aviateurs. Paris, L'Omnigraphie française, édit.

Lamb, H. On the effect of the walls of an experimental tank on the resistance of a model.

Techn. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 49-54, diagr.

- A paradox in fluid motion.

Aeronautical Research Committee, Reports and Memoranda, No. 1084 (Ae. 263), Dec, 1926, London, 1927, pp. 4.

Lamé, M. Discussion sur les hélicoptères.

L'Aérophile, 35e année, Nos. 3-4, 5-6 (ler-15 fév., ler-15 mars 1927), Paris, pp. 50-53, 83-86, ill.

Lamps. New lamps for old. New Vickers-Davis navigation equipment represents great saving in weight.

Flight, Vol. 19, No. 6 (Feb. 10, 1927), London, pp. 68-69, ill.

Lampué, Pierre. Les rapports entre l'état et les compagnies de transports publics aériens.

Paris, Chauny et Quinsac, éditeurs, pp. 108.

Land, Emory S. Commercial aviation as a corolla^ of naval and military aviation.

Slipstream, Vol. 8, No. 11 (Nov. 1927), Dayton, Ohio, pp. 11-12.

Landiech. Sur l'utilité et les possibilités d'emploi de l'avion en Afrique Equatoriale Française.

La Technique Aéronautique, 18e année, No. 69 (15 juil. 1927), Paris, pp. 203-206.

Landing. See Armstrong, E. R.: Seadromes and ocean flying.

Landing devices. The Brunner landing device for aircraft.

Aero Digest, Vol. 11, No. 3 (Sept. 1927) New York, p. 308, diagr.

Landing fields. Air landing planned for post-office roof.

Popular Mechanics, Vol. 48 (Nov. 1927), Chicago, p. 816, ill.

- Landing fields in mid-ocean.

Review of Reviews, Vol. 76 (July, 1927), New York, pp. 88-89.

-■ Landing fields in the United States. Revised to April, 1926.

Slipstream, Vol. 8 No. 1 (Jan. 1927), Dayton, Ohio, p. 12.

Landing gear. Nouveaux systèmes de trains d'atterrissages.

L'Aéronautique, 9me année, No. 96 (mai 1927), Paris, pp. 141-143, ill.

--Single landing wheels for aircraft.

Flight, Vol. 19, No. 31 (Aug. 4,1927), London, p. 535, diagr.

- See Baumhauer, A. G. von: The resistance of aeroplane wheels.

- See Chevreau : Les essais de patins atterrisseurs à chenille.

- See Guglielmetti, Aldo, e Luigi Ferrari: Il comportamento statico e

dinamico délie ruote unificate per aeroplano.

- See Perucca, Alceste: Sul lavoro di deformazione dell'attuale sistema

elastico dei carrelli d'aeroplano.

- See Thoret, J.: Les avions qui vont sur skis. Une visite à l'aviation

Finlandaise.—A l'école de l'aéro O. Y.

Lane, D. R. Business takes the air.

Sunset, Vol. 58 (June 1927), San Francisco, pp. 30-31, ill.

«- Flying with the western air mails.

Sunset, Vol. 58 (May 1927), San Francisco, pp. 12-14, ill., map.

- Recent developments of municipal airports in the west.

American City, Vol. 37, No. 1 (July 1927), New York, pp. 1-5, ill.

Langley. Langley's aerodrome.

Scientific Monthly, Vol. 25 (July 1, 1927), Garrison, N. Y., pp. 92-94.

Langley, Samuel Pierpont. See History: Invention, transportation, the flying machine.

Langley Medal. Award of the Langley medal. (Charles Augustus Lindbergh.) Science, Vol. 66, No. 1696 (July 1, 1927), New York, p. 9.

- Langley medal awarded to Colonel Charles A. Lindbergh.

Science, n. s., Vol. 66 (July 1, 1927), Garrison, N. Y., p. 9.

Langsdorpf, Werner von. Fortschritte der Luftfahrt. Frankfort a. M., H. Bechhold, 1927.

- Der 19 PS Aug über die Alpen.

Frankfort a. M., H. Bechhold.

- Taschenbuch der Luftflotten gegründet 1914, Jahrgang 1927. Pocket

almanac of aeronautics founded 1914, year 1927. Almanach des flottes aériennes fondé en 1914, année 1927.

Frankfurt am Main, H. Bechhold, Verlagsbuchhandlung, [1927], pp. 556, ill.

Lapresle, A. Contribution a l'étude expérimentale du champ aérodynamique autour d'un profil sustentateur.

Service Technique et Industriel de l'Aéronautique, Bulletin Technique, No. 43, Nov. 1927, France, pp. 116, ill., tables.

Latham, Hubert. See English Channel: Famous flights of history. The first Channel air crossing.

Launching. How it feels to be shot from a gun.

Pop. Mech., Vol. 47 (Mar. 1927), Chicago, pp. 436-438, ill.

Lavender, T. See Reif, E. F., and T. Lavender: Experiments on the flow behind a rotating cylinder in the water channel.

Lawrance, Charles L. Air-cooled engine development.

Aviation, Vol. 23, No. 13 (Sept. 26, 1927), New York, pp. 723-725, ill.

•- Mr. Lawrance honored.

U. S. Air Services, Vol. 12, No. 7 (July 1927), Washington, D. C, p. 24.

Laws and regulations. Air commerce regulations effective December 31, 1926. Aero Digest, Vol. 10, No. 1 (Jan. 1927), New York, pp. 18, 50-55.

- Amendments to air regulations.

Aero Digest, Vol. 10, No. 5 (May 1927), New York, pp. 460, 462.

- Bases for a convention and resolutions approved by the Inter-American

commercial aviation commission.

Bull. Pan American Union, Vol. 61 (Aug. 1927), Washington, D. C, pp. 751-758, ill.

- La clause d'irresponsabilité inscrite sur billet de passage d'une ligne

aérienne peut être valable.

L'Aérophile, 35e année, Nos. 7-8 (ler-15 avril 1927), Paris, p. 118.

- The Department of Commerce issues final civil air regulations.

Aviation, Vol. 22, No. 1 (Jan. 3, 1927), New York, pp. 32-38.

- Outcry for a curb on death flights.

Literary Digest, Vol. 94 (Sept. 24, 1927), New York, pp. 5-6.

- The Pennsylvania air law.

Aviation, Vol. 22, No. 17 (Apr. 25, 1927), New York, pp. 854-855.

- Rules of the air.

Scient. Amer., Vol. 137 (Nov. 1927), New York, p. 466, diagr.

Laws and regulations. Traffic rules for aircraft.

Literary Digest, Vol. 93 (Apr. 2, 1927), New York, p. 28, ill.

■■- Views on the air regulations.

Aero Digest, Vol. 10, No. 2 (Feb. 1927), New York, pp. 100,102, ill.

-. See Bartz, Werner: Deutsche luftrechtspolitik seit Versailles.

- See Bredow, Traugott, und Fritz Müller: Das Luftverkehrsgesetz vom

1. August 1922.

- See Fixel, Rowland W.: The law of aviation.

- See Hess, F.: Schweizerisches Luftrecht.

- See International Commission for Air Navigation: Convention relating to

the regulation of aerial navigation dated 13th October 1919.

- See Kuhn, Arthur Kline: Projects of the American Institute of International Law: Transit by land, waterways, and air.

- See La Roe, Arthur: The physical standard of the new air regulations.

-— See Lampué, Pierre: Les rapports entre l'état et les compagnies de transports publics aériens.

- See Rochford, Daniel: State and Federal rights. Massachusetts tests

right to refuse to recognize a federal piloting license within its boundaries.

- See Turner, Cresswell : The regulation of air traffic.

-■ See United States: U. S. air traffic rules.

Le Brix. See Costes et Le Brix: De Paris au Brésil en deux étapes.

Le Brix, Joseph. See Paris to Buenos Aires: French airmen reach Brazil.

- See South Atlantic Ocean: South Atlantic spanned..

Le Page, W. L. Are aviation records worth while?

Aviation, Vol. 22, No. 16 (Apr. 18, 1927), New York, pp. 767-771, ill.

•- The development of aviation in South America.

Aviation, Vol. 22, No. 18 (May 2,1927), New York, pp. 891-896, 111.

•-'■ The development of the Amphibian airplane.

Aviation, Vol. 22, No. 17 (Apr. 25, 1927), New York, pp. 828-832, 840-841, ill.

- Progress—1926.

Aviation, Vol. 22, No. 1 (Jan. 3, 1927), New York, pp. 19-23, ill.

League of Nations. Commission préparatoire de la Conférence du désarmement. Sous-commission B. Rapport No. 1.

Genève, J. de G., 1927, Société des nations. No. 1 (C. 738. M. 277. 1926. ix, (O.P. D. 29) (G. P. D./C'*B"/12) Publications de la Société des nations, ix. Armements. 1926. ix. 15.

Lebon. Enquete technique sur l'aviation commerciale. La poste aérienne.

La Technique Aéronautique, 18e année, n. s. No. 74 (15 dée. 1927), Paris, pp. 322-335, maps.

Lecoeuvre. Enquete technique sur les principaux problèmes relatifs a la sécurité de la navigation aérienne. (10e Séance-9 mars 1927). Les alliages légers d'aluminium. En quoi leur emploi peut intéresser la sécurité.

La Technique Aéronautique, 18e année, n. s. No. 68 (15 juin 1927), Paris, pp. 183-190, ill.

Lee, John G. Metal wing spars.

Aviation, Vol. 23, No. 23 (Dec. 5,1927), New York, pp. 1342-1346, diagr.

Lefker, J. From the winner of the aircraft tournament. Playground, Vol. 21 (Dec. 1927), New York, p. 465, ill.

Lehmann, Ernst A., and Howard Mingos. Zeppelins.

Saturday Evening Post, Vol. 199, (April 9, 30, May 14, 1927), Philadelphia, pp. 8-9, 24-25, 41, ill.

- The Zeppelins; the development of the airship, with the story of the

Zeppelin air raids in the World War.

New York, J. H. Sears & Company, inc., [1927,] pp. xii, 329, ill.

Lehmann, G. D. The variation in the fatigue strength of metals when tested in the presence of different liquids.

Aeronautical Research Committee, Reports and Memoranda, No. 1054 (M. 48), Oct. 1926, London, 1927, pp. 13, ill., tabls.

Leighton, B. G. Limits of aviation.

Atlantic Monthly, Vol. 140 (Nov. 1927), Boston, pp. 603-610.

Lembo, Leandro. Considerazioni sull' impiego dell' aviazione coloniale. Rivista Aeronautica, Anno 3, N. 4 (Aprile 1927), Roma, pp. 13-29.

Lempertz, E. Flüssige und gasförmige Brennstoffe im Luftschiffbetrieb. Luftfahrt, 31. Jahrg., Nr. 6 (22 März 1927), Berlin, pp. 82-83.

Lennertz, J. Beitrag zur theoretischen Behandlung des gegenseitigen Einflusses von Tragfläche und Rumpf.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 1. Heft (14 Jan. 1927), München, pp. 11-13, ill.

- On the mutual reaction of wings and body.

National Advisory Committee for Aeronautics, Technical Memorandums No. 400, February 1927, Washington, pp. 6, ill. From "Zeitschrift für Flugtechnik und Motorluftschiffahrt" January 14, 1927.

Lenssellink, J. A. F. De zeilvliegwedstrijden in de Rhön.

Het Vliegveld, Ilde Jaarg., No. 10 (Oct. 1927), Amsterdam, pp. 354-356, ill.

Leonhardy, Leo. Das Weltflugwesen im Jahre 1927. II. Luftsport. Die Luftwacht, Heft 12, Dez. 1927, Berlin, pp. 667-675, ill.

Lepère, G. L'aspect technique de l'exploit de Lindbergh.

L'Aérophile, 35e année, Nos. 11-12 (ler-15 juin 1927), Paris, pp. 164-168, ill.

Lerbs, H. See Helmbold, H. B., und H. Lerbs: Modellversuche zur Nachprüfung der Treibschrauben-Wirbeltheorie.

Leroy, L. Chronométrage sportif.

L'Aérophile, 35e année, Nos. 1-2 (ler-15 jan. 1927), Paris, p. 10.

Lesseps, Jacques de. Jacques de Lesseps.

L'Aéronautique, 9me année, No. 103 (dec. 1927), Paris, p. 372.

Levasseur. "Levasseur 8" transatlantic airplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 50, Washington, August 1927, pp. 8, ill. From "L'Aéronautique," June 1927 and "L'Aérophile," June 1927.

Levi-Civita, Tullio, e Ugo Amaldi. Lezioni di meccanica razionale. Vol. II, Parte II.

Bologna, Zanichelli, 1927.

Levine. See New York-Germany flight: The New York-Germany flight. Chamberlin and Levine establish world's non-stop distance record.

Levine, Charles A. See Chamberlin et Levine: L'exploit de Chamberlin et Levine.

- See Columbia: The second great hop.

- See Hübner, G. : New York-Berlin.

Leyat, Marcel. See Blanchet, Georges: Aviateurs contemporains, Marcel Leyat.

Liberty engine. See Gilman, N. H.: The air cooled Liberty engine.

Libraries. See Krupp, G. : Zur Eröffnung der Zentralbibliothek der Deutschen Luftfahrt.

Licenses. Air licenses to be issued by the Dept. of Commerce.

Aviation, Vol. 22, No. 16 (Apr. 18, 1927), New York, pp. 781-782, ill.

- How to obtain your private license.

Flight, Vol. 19, No. 16 (Apr. 21, 1927), London, p. 248.

Liebers, F. Ergebnisse und Erfahrungen aus dem Süddeutschlandflug 1926.

Zeitschr. Flugt. Motorluftseh., 18. Jahrg., 6. Heft (28. März 1927), München, pp. 129-134, diagrs., tables.

Life saving. Throwing out life lines from airplanes.

Pop. Mech., Vol. 48 (Dec. 1927), Chicago, pp. 907-909, ill. Literary Digest, Vol. 95 (Dec. 17, 1927), New York, pp. 23-24..

Lift. See Seewald, F.: Increasing lift by releasing compressed air on suction side of airfoil.

Lift and drag. See Anderson, E. F., L. E. Caygill, and R. McKinnon Wood : Full-scale and model measurements of lift and drag of Bristol Fighter with R. A. F. 32 wings.

- See Clark, B. D., R. G. Harris, and L. E. Caygill: Full scale and model

measurements of lift and drag of Bristol Fighter with R. A. F. 31 wings.

- See Harris, R. G., and C. Howarth: Full scale determination of the lift

and drag of an Avro type 504 K at large angles of incidence and comparison with model results.

- See Jones, E. T., and L. E. Caygill: Full-scale and model measurements

of lift and drag of Bristol Fighter with Handley Page slotted wings.

Light planes. See Cashman, Denis F.: Light plane development—Are we neglecting it?

Lighthouse Bureau. See Airways: Lighthouse Bureau to care for airways.

Lighting. Automatic airport lighting device.

Aero Digest, Vol. 11, No. 3 (Sept. 1927), New York, p. 296, ill.

- Automatic lighting of airports successfully demonstrated.

U. S. Air Services, Vol. 12, No. 9 (Sept. 1927), Washington, D. C, pp. 29-30, ill.

- Cost of lighting landing fields.

U. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. C, p. 26.

- Department of Commerce lights civil airways.

Aviation, Vol. 22, No. 5 (Jan. 31, 1927), New York, p. 218.

- L'éclairage des terrains et des routes aériennes en Angleterre et en Allemagne.

L'Aéronatique, 9me année, No. 96 (mai 1927), Paris, pp. 149-151, ill.

- Government installs Westinghouse light and power plants.

U. S. Air Services, Vol. 12, No. 8 (Aug. 1927), Washington, D. C, pp. 52, 54, ill.

- The fighting of airways.

Aeroplane, Vol. 32, No. 10 (Mar. 9,1927), London, p. 256.

- Lighting the ways for travelers by air.

U. S. Air Services, Vol. 12, No. 11 (Nov. 1927), Washington, D. C, p. 50.

- New automatic airport lighting device..

Aviation, Vol. 23, No. 11 (Sept. 12, 1927), New York, p. 602, ill.

Lighting. New landing light.

Scient. Amer., Vol. 137 (Dec. 1927), New York, pp. 563-564, ill.

- See Franck, P. : Phares lumineux ou radiophares.

- See MacCracken, William P., jr.: Airport lighting.

- See Manigold, Gg.: Lichtanlagen zur Sicherung des Nachtluftverkehrs.

- See Paulin, René: Le phare à grande puissance du Mont-Valerien.

- See United States: L'éclairage des terrains et des routes aériennes en

Amérique.

Lighton, B. G. The airplane power plant and safe flying.

Slipstream, Vol. 8, No. 11 (Nov. 1927), Dayton, Ohio, pp. 20-24, ill.

Lights. La lumière à bord.

L'Aéronautique, (L'Aérotechnique, 5me année, No. 58), 9me année, No. 101 (oct. 1927), Paris, pp. 313-315, ill.

Lincoln Page. Lincoln Page plane.

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, p. 554, ill.

Lindbergh, Charles Augustus. America welcomes Colonel Lindbergh. Aviation, Vol. 22, No. 25 (June 20, 1927), New York, pp. 1350-1351, 1380, ill.

- And then I Jumped.

Saturday Evening Post, Vol. 200 (July 23, 1927), Philadelphia, pp. 6-7, ill.

- A brief biography of Lindbergh.

Aero Digest, Vol. 10, No. 6 (June 1927), New York, p. 534, ill.

- Captain Lindbergh arrives.

Aeroplane, Vol. 32, No. 22 (June 1, 1927), London, pp. 644-648, ill.

- Captain Lindbergh's busy visit.

Aeroplane, Vol. 32, No. 23 (June 8,1927), London, p. 678, ill.

- Colonel Lindbergh's homecoming.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, pp. 30-34, ill.

-• Colonel Lindbergh's itinerary.

Aviation, Vol. 23, No. 4 (July 25, 1927), New York, p. 195.

- Colonel Lindbergh's return.

Flight, Vol. 19, No. 24 (June 16, 1927), London, p. 401.

- Colonel Lindbergh's U. S. air tour.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, p. 214, ill.

- Companies who contributed to Colonel Lindbergh's New York-Paris

flight.

Aviation, Vol. 22, No. 25 (June 20, 1927), New York, p. 1370.

- Going over the side four time with a parachute.

U. S. Air Services, Vol. 12, No. 2 (Feb. 1927), Washington, D. C, pp. 42-43.

- Instruments used by Captain Lindbergh.

Aero Digest, Vol. 10, No. 6 (June 1927), New York, pp. 548, 550.

- Lindbergh as a Columbus.

Literary Digest, Vol. 93 (June 18,1927), New York, p. 20.

- Lindbergh at home.

U. S. Air Services, Vol. 12, No. 7 (July, 1927), Washington, D. 0., pp. 16-22, ill.

- Lindbergh completes tour.

Slipstream, Vol. 8, No. 11 (Nov. 1927), Dayton, Ohio, p. 32, map.

- Lindbergh conquers the world by airplane.

U. S. Air Services, Vol. 12, No. 6 (June 1927), Washington, D. C, pp. 17-23, ill.

Lindbergh, Charles Augustus. Lindbergh flies from Washington to Mexico City.

Aviation, Vol. 23, No. 26 (Dec. 26, 1927), New York, pp. 1514-1515, ill.

- Lindbergh on tour.

U. S. Air Services, Vol. 12, No. 8 (Aug. 1927), Washington, D. C, pp. 56, 58.

- Lindbergh starts Washington, D. C. to Mexico City non-stop flight.

Aviation, Vol. 23, No. 25 (Dec. 19, 1927), New York, p. 1476, ill.

- Lindbergh the teacher.

U. S. Air Services, Vol. 12, No. 9 (Sept. 1927), Washington, D. C, pp. 35-38, ill.

- The Lindbergh tour.

Popular Aviation, Vol. 1, Nos. 3, 5 (Oct.-Dec. 1927), Chicago, pp. 29-30, 25-26, ill.

- Lindbergh welcomed in Europe.

Aero Digest, Vol. 10, No. 6 (June 1927), New York, pp. 530, 552,

- Lindbergh's first choice was the "Eaglerock."

U. S. Air Services, Vol. 12, No. 7 (July 1927), Washington, D. C, p. 38.

- Lindbergh's instruments.

Scient. Amer., Vol. 137 (Aug. 1927), New York, pp. 169, ill.

- Lindbergh's leap to Paris and fame.

Literary Digest, Vol. 93 (June 4, 1927), New York, pp. 5-8, ill., diagr., map.

- Lindbergh's own story.

Current History Magazine, N. Y. Times, Vol. 26 (July 1927), New York, pp. 513-522, ill.

- Lindbergh's trans-Atlantic flight.

Scient. Amer., Vol. 137 (Aug. 1927), New York, pp. 167-169, ill., diagr.

- Lindy back, looking for a job.

Literary Digest, Vol. 95 (Nov. 12,1927), New York, pp. 62-68, map.

- London's welcome to Lindbergh.

Flight, Vol. 19, No. 22 (June 2,1927), London, pp. 343-349, ill.

- Making of an air pilot.

World's Work, Vol. 54 (Sept. 1927), New York, pp. 472-481.

- My flight to Paris.

Aero Digest, Vol. 10, No. 6 (June 1927) New York, pp. 514-524, ill., map.

- New York-Paris flight a reality. Capt. Charles A. Lindbergh makes

first successful non-stop flight.

Aviation, Vol. 22, No. 22 (May 30,1927), New York, pp. 1120-1122, ill., map.

- New York-Paris. Lindbergh's non-stop flight across the Atlantic.

Flight, Vol. 19, No. 21 (May 26, 1927), London, pp. 331-333, ill.

- New York-Paris sans escale. Le pilote Charles A. Lindbergh sur mono-plan Ryan a moteur Wright j-5 220 HP, va de New York à Paris en 33h 30m Le record du monde de distance sans escale est porté à 5850 kilomètres.

L'Aéronautique, 9me année, No. 97 (juin 1927), Paris, pp. 162-167, port., ill.

- Oil used on trans-Atlantic flight.

Aero Digest, Vol. 10, No. 6 (June 1927), New York, p. 546.

- On the great flights.

Aeroplane, Vol. 32, No. 21 (May 25, 1927), London, pp. 601-612, ill.

- The outstanding feat of the ages.

Popular aviation, Vol. 1, No. 1 (Aug. 1927), Chicago, pp. 5-9, ill.

- Précisions nouvelles sur le matériel de Lindbergh.

L'Aéronautique, (L'Aêrotechnique, 5e année, No. 55), 9me année, No. 98 (juil. 1927), Paris, pp. 215-217, ill.

- La réception en l'honneur de Lindbergh.

L'Aérophile, 35e année, Nos. 11-12 (ler-15 juin 1927), Paris, pp. 180-191, ill.

Lindbergh, Charles Augustus. Rulers of three nations confer honors upon Captain Charles A. Lindbergh.

Aviation, Vol. 22, No. 23 (June 6, 1927), New York, pp. 1216-1217, ill.

- Le séjour de Lindbergh à Paris.

L'Aérophile, 35e année, Nos. 11-12 (ler-15 juin 1927), Paris, pp. 169-170, ill.

- Les troisième et quatrième sauvetages de Lindbergh.

L'Aéronautique, 9me année, No. 97 (juin 1927), Paris, p. 196.

- United States to Europe and return. A land, sea and air log of Colonel

Chas. A. Lindbergh's great adventure.

Aviation, Vol. 22, No. 25 (June 20, 1927), New York, pp. 1354-1355, 1398, ill.

- Use of a Lindbergh.

Literary Digest, Vol. 94 (Aug. 6,1927), New York, p. 20.

- "We", by Charles A. Lindbergh; the famous flier's own story of his life

and his trans-Atlantic flight, together with his views on the future of aviation, with a foreword by Myron T. Herrick.

New York, G. P. Putnam's Sons, 1927, pp. 318, ill.

- We—Pilot and plane.

London, Putnam's Sons, 1927, pp. 235, ill.

- What Lindbergh did for aviation.

World's Work, Vol. 54 (July 1927), New York, pp. 232-233.

- Who is Charles Lindbergh?

Slipstream, Vol. 8, No. 7 (July 1927), Dayton Ohio, p. 15.

--See Beamish, Richard Joseph: The story of Lindbergh, the lone eagle,

including the development of aviation, epoch-making flights of the world's greatest airmen, and the history of the efforts to bridge the distance between the old and the new worlds.

- See Bouché, Henri: DeBlériot à Lindbergh.

- See Coolidge, Calvin: Address of-President Coolidge at the awarding to

Col. Charles A. Lindbergh by the National Geographic Society of the Hubbard Medal.

- See Coolidge, Calvin: Address of President Coolidge bestowing upon

Colonel Charles A. Lindbergh the distinguished flying cross. Washington, D. C. Saturday, June 11, 1927.

- See Crocco, G. Arturo : L'autonomia degli aerei e il segreto di Lindberg.

- See Edwards, A. J.: The plane Colonel Lindbergh used.

- See Fife, George Buchanan: Lindbergh, the lone eagle, his life and achievements, with a valuable chapter on airplane navigation by Captain Robert Schofield Wood.

- See Hall, Donald A.: Technical preparation of the airplane "Spirit of St.

Louis."

- See Horsfall, Jessie E.: Lindbergh's start for Paris.

- See Hydravion: Over den Atlantischen Oceaan.

- See Langley medal: Award of the Langley medal.

- See Lepère, G. : L'aspect technique de l'exploit de Lindbergh.

- See Lindbergh, Gage: "Plucky" Lindbergh; incidents in the life of

Colonel Charles Lindbergh, and brief biography, log of the trans-Atlantic trip and receptions, recording all important facts.

Lindbergh, Charles Augustus. See Llave, Joaquin de la: Más vuelos trasatlánticos.

- See McKenna, V. V.: Colonel Charles Lindbergh's flight.

- See Numan, Sies: "Lucky Lindbergh off for Paris!" Zijn start op

Roosevelt Field.

- See Parseval, August von: Lindberg's flight.

- See Pistolesi, Enrico: Lindberg, Bellanca, Chamberlain, De Pinedo.

- See Reyneker, F. H.: De motor, die Lindbergh en Chamberlin over den

Oceaan bracht: De Wright "Whirlwind."

■ See United States Department of State: The flight of Captain Charles A.

Lindbergh from New York to Paris, May 20-21, 1927. As compiled from the official records of the Department of State.

- See Van Every, Dale, and Morris De Haven Tracy: Charles Lindbergh, his

life; introduction by Karl A. Bickel.

- See Watter, Michael: Engineering aspects of Lindbergh's trans-Atlantic

flight.

See Weiss, Pierre: Lindbergh.

- See Wilks, Russell: When Ford went up.

Lindbergh, Gage. "Plucky" Lindbergh; incidents in the life of Colonel Charles Lindbergh and brief biography, log of the trans-Atlantic trip and receptions, recording of all important facts.

Los Angeles, California, Gem Publishing Company [1927], pp. 77. Gage Lindbergh, pseud, of Gerald R. Gage and James Lindbergh.

Lindbergh, James. See Lindbergh, Gage: "Plucky" Lindbergh; incidents in the life of Colonel Charles Lindbergh and brief biography, log of the trans-Atlantic trip and receptions, recording of all important facts.

Lindsley, Henry D. European air transportation.

Aviation, Vol. 22, No. 13 (Mar. 28, 1927), New York, pp. 617-619, HI.

Line squalls. See Giblett, M. A.: Line-squalls.

Linney, A. G. Helsingfors. The traveller to Finland save some seven days by using the airway.

Airways, Vol. 3, No. 11 (July 1927), London, pp. 355-357, ill.

Lionoil. Berry Bros. Lionoil protects metals.

Aviation, Vol. 22, No. 16 (Apr. 18, 1927), New York, p. 783.

Lioré et Olivier. L'hydravion Lioré et Olivier, type 194.

L'Aéronautique, 9me année, No. 93 (fév. 1927), Paris, pp. 37-40, ill.

- Lioré-Olivier LeO 194 seaplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 39, Washington, April 1927, pp. 5, ill. From "L'Aéronautique," February 1927.

- Un prix Lioré et Olivier.

L'Aérophile, 35e année, Nos. 7-8 (ler-15 avril 1927), Paris, p. 105, port.

Lippisch, A. Ableitung der Formeln zur Berechnung der Tragwand eines einmal verspannten oder verstrebten Eindeckers.

Zetischr. Flugt. Motorlufhsch., 18. Jahrg., 15. Heft (16. Aug. 1927), München, pp. 357-358, ill.

- Approximation method for determining the static stability of a monoplane glider.

National Advisory Committee for Aeronautics, Technical Memorandums No. 436, November 1927, Washington, pp. 17, ill. From "Zeitschrift für Flugtechnik und Motorluftschiffahrt" June 14,1927.

Lippisch, A. Näherungsverfahren zur Bestimmung der statischen Stabilität beim Eindecker.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 11. Heft (14. Juni 1927), München, pp. 251-256, ill.

- Technischer Bricht über die zum Rhön-Segelflug-Wettbewerb 1927

erschienenen Flugzeuge.

Zetischr. Flugt. Motorluftsch., 18. Jahrg., 23. Heft (14. Dez. 1927), München, pp. 542-545, ill.

- See Stamer, F., und A. Lippisch: Der Bau von Flugmodellen.

Litchfield, P. W. Lighter-than-air craft.

Annals, American Academy Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 79-85.

Llave, Josquin de la. La expedición aerea a la Guinea Española. Ibérica, Año 14, Num. 668 (5 marzo 1927), Barcelona, pp. 152-155, ill.

- Más vuelos trasatlánticos.

Ibérica, Año 14, Núm. 683 (18 junio 1927), Barcelona, pp. 394-396, ill.

Loads. See Miller, Roy G.: A load factor formula.

- See Mock, Richard M.: The distribution of loads between the wings of a

biplane having decalage.

- See Reid, Elliott, G., en Thomas Carroll: Het starten van een zwaarbelast

vliegtuig.

Locatelli. See Santa Maria: II volo del "Santa Maria." Dall 'America latina all' America anglosassone.

Lock, C. N. H., H. Bateman, and H. C. H. Townend. An extension of the vortex theory of airscrews with applications to airscrews of small pitch, including experimental results.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 537-576, diagr., tabls.

Lock, C. N. H. On the system of vortices generated by a circular cylinder in steady motion through a fluid.

Techn. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 76-81, diagr.

Lock, C. N. H., H. C. H. Townend, and A. G. Gadd. Wind tunnel experiments on a symmetrical aerofoil (Gottingen 429 section.)

Aeronautical Research Committee, Reports and Memoranda, No. 1066, (Ae. 248), Nov. 1926, London, 1927, pp. 20, tabls., diagr.

Lockheed. The Lockheed cabin monoplane.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, pp. 188, 190, ill.

- Lockheed "Vega" airplane. A commercial cabin monoplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 61, Washington, November 1927, pp. 11, 111.

--The Lockheed "Vega" commercial plane.

Aviation, Vol. 23, No. 8 (Aug. 22,1927), New York, pp. 420-421, ill.

Lockyer, C. E. W. See Jones, B. Melville, W. S. Farren, and C. E. W. Lockyer: Preliminary experiments on two-dimensional flow round bodies moving through a stationary fluid.

Loening, Grover. Grover Loening offers $5,000 prize fund for college fliers. Aviation, Vol. 23, No. 19 (Nov. 7, 1927), New York, p. 1124.

- Loening establishes annual prize fund of $5,000 for intercollegiate flying

contests.

U. S. Air Services, Vol. 12, No. 11 (Nov. 1927), Washington, D. C, pp.il

- The revival of the monoplane.

Slipstream, Vol. 8, No. 8 (Aug. 1927), Dayton, Ohio, pp. 23-26, ill.

Loeninq Amphibian. The Loening OL-8 Amphibian.

Aviation, Vol. 23, No. 17 (Oct. 24, 1927), New York, pp. 1002-1008, ill., diagr. Flight, Vol. 19, No. 51 (Dec. 22, 1927), London, pp. 861-864, ill., diagr.

- The Loening Amphibian. America's most unusual airplane.

Slipstream, Vol. 8, No. 1 (Jan. 1927), Dayton, Ohio, pp. 14-19, ill., diagr.

- Loening develops single-wheel Amphibian.

Aviation, Vol. 22, No. 13 (Mar. 28, 1927), New York, p. 626, ill.

- More work well done by Loening Amphibians.

U. S. Air Services, Vol. 12, No. 9 (Sept. 1927), Washington, D. 0., p. 20.

Loew, Gottfried. Ein Beitrag zur Systematik der Joukowsky-Profile.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 22. Heft (28. Nov. 1927), München, pp. 517-522, ill.

Löwe, Karl F. Navigation im Luftverkehr.

Die Luftwacht, Heft 7, Juli 1927, Berlin, pp. 395-397.

London Aeroplane Club. Rules and regulations of the London Aeroplane Club. Aviation, Vol. 23, No. 20 (Nov. 14, 1927), New York, pp. 1194-1195.

Long, S. H. Navigational wireless.

London, Chapman & Hall, 1927.

Lorenz, H. Die Möglichkeit der Weltraumfahrt.

Zeitschr. Ver deutsch. Ing., Bd. 71, Nr. 19 (7. Mai 1927), Berlin, pp. 651-654, ill.

Loring, Jorge. Fabricación de aeroplanos en España. Los talleres Loring. Ibérica, Año 14, Núm. 666 (19 feb. 1927), Barcelona, pp. 116-117.

Lorraine. The Lorraine-Dietrich aero-engines.

Aeroplane, Vol. 33, No. 1 (July 6, 1927), London, pp. 44-47, ill., diagr.

- Les nouveaux moteurs Lorraine refroidis par l'air.

L'Aéronautique, 9me année, No. 103 (déc. 1927), Paris, pp. 374-375, ill.

- Les nouveaux moteurs Lorraine 650HP.

L'Aéronautique, (L'Aérotechnique, 5me année, No. 56), 9me année, No. 99 (août 1927), Paris, pp. 252-253, ill.

- Lorraine Dietrich vliegtuigmotoren.

Het Vliegveld, Ilde Jaarg., No. 12 (Dec. 1927), Amsterdam, pp. 417-418, ill.

- See Kuipers, C: Lorraine-Dietrich motoren.

Louis, Jean. Boven Goenoeng en Sawah. V.

Het Vliegveld, Ilde Jaarg., No. 1 (Jan. 1927), Amsterdam, pp. 19-22, ill. S

Lubrication. Hints on lubrication of Anzani engines.

Aviation, Vol. 23, No. 1 (July 4,1927), New York, p. 27.

- See Archbutt, Leonard, and R. Mountford Deeley: Lubrication and

lubricants: A treatise on the theory and practice of lubrication, and on the nature, properties, and testing of lubricants.

Ludington, Charles Townsend. Safety in air transport operations. Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, pp. 516, 622.

Luke, Frank. See Driggs, Laurence La Tourette: Frank Luke, the balloon straf er.

LuKowiTZ, J. J. Illustrating a principle of aerodynamics.

Industrial Arts Magazine, Vol. 16 (Sept. 1927), Milwaukee, Wis., pp. 352-353, diagr.

Luraghi, Eugenio Giuseppe. Delle sovvenzioni statali alie imprese di navigazione aerea.

Rivista Aeronáutica, Anno 3, N. 10 (Ott. 1927), Roma, pp. 89-102.

Lütge, Ferry. Wat Jimmy Moran vertelde. . . . Een verhaal uit het leven van een gevechtsvlieger.

Het Vliegveld, Ilde Jaarg., No. 11 (Nov. 1927), Amsterdam, pp. 393-394, ill.

M

M. L. La ligne aérienne France-Amérique du Sud.

L'Aêrophile, 35e année, Nos. 21-22 (ler-15 nov. 1927), Paris, pp. 342-343, map.

Maas, H. J. van der. See Koning, C, en H. J. van der Maas: Experiments on the action of the ailerons of a thick tapered wing.

McAdie, Alexander. The fliers' aspects of aerography.

Aviation, Vol. 22, No. 5, 12, 21 (Jan. 31, Mar. 21, May 16, 1927), New York, pp. 215-216 271-273, 1043-1044, ill., charts.

- Icarus and melting wax.

Science, Vol. 66, No. 1708 (Sept. 23, 1927), New York, p. 280.

McAlery, C. M. The air defence exercises.

Aeroplane, Vol. 33, No. 6 (Aug. 10,1927), London, pp. 200-210.

- The Royal Air Force in 1926.

Aeroplane, Vol. 32, No. 1 (Jan. 5, 1927), London, pp. 6-8.

McCarthy. The McCarthy Air Scout.

Aviation, Vol. 22, No. 6 (Feb. 7, 1927), New York, pp. 281-282, ill. Flight, Vol. 19, No. 13 (Mar. 31, 1927), London, pp. 185-186, ill.

McCatjley, E. G. Metal propeller development.

Aviation, Vol. 22, No. 22 (May 30, 1927), New York, pp. 1127-1130, 1144, ill.

Macchi. Macchi M. 39 seaplane. Single seat racer with an 800 HP. Fiat "A-S2" engine.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 32, Washington, March 1927, pp. 3, ill.

McClure, Ivor H. Seven countries in eight days.

Flight, Vol. 19, No. 36 (Sept. 8, 1927), London, pp. 636-638, map.

McConnell. B. M. Air mail pilot.

Review of Reviews, Vol. 76 (Aug. 1927), New York, pp. 167-173, ill.

McCook Field. See Jacobs, A. M.: McCook Field passes into history.

MacCracken, W. P., Jr. Air regulations.

Annals, American Academy Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 118-123.

- Airport lighting.

Slipstream, Vol. 8, No. 12 (Dec. 1927), Dayton, Ohio, pp. 9-10, 34, ill.

- Aviation in America.

Journal of the Western Society Engineers, Vol. 32, No. 5 (June 1927), Chicago, pp. 174-182. Municipal and County Engineering, Vol. 72, No. 6 (June 1927), Indianapolis, pp. 284-291.

- Should ocean flying be curbed?

Aero Digest, Vol. 11, No. 4 (Oct. 1927), New York, p. 379, ill.

McDarment, C. Latest engines of the sky.

.Pop. Mech., Vol. 47 (Jan. 1927), Chicago, pp. 114-119, ill.

Macgill, Ronald. Navigation in the air. The part that chance has played in recent transatlantic flights.

Airways, Vol. 3, No. 12 (Aug. 1927), London, pp. 411-412, ill.

McKenna, V. V. Colonel Charles Lindbergh's flight.

National Aeronautic Association Review, Vol. 5, No. 6 (June 1927), Washington, pp. 3-4 10, ill.

McLaughlin, George F. Bellanca planes in production.

Aero Digest, Vol. 11, No. 6 (Dec. 1927), New York, p. 694, ill.

- Ford's latest monoplane.

Aero Digest, Vol. 10, No. 2 (Feb. 1927), New York, p. 95, ill.

6333—28-8

McLaughlin, George F. The Heath/]"Parasol" sport plane.

Aero Digest, Vol. 10, No. 3 (Mar. 1927), New York,3p.a184,till., diagr.

- Lieut. Williams' racing seaplane.

Aero Digest. Vol. 11, No. 3 (Sept. 1927), New York, pp. 286, 288, ill., diagr.

- The Meyers Midget light plane.

Aero Digest, Vol. 10, No. 4 (Apr. 1927), New York, p. 279, ill., diagr.

- The Ryan NY-P monoplane.

Aero Digest, Vol. 10, No. 6 (June 1927), New York, pp. 536-538, ill., diagr.

- Story of the airplane engine.

Annals, American Academy Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 34-37, ill.

- United States' airplanes and engines.

Aero Digest, Vol. 10, No. 5 (May 1927), New York, pp. 402-414, ill., tabls.

- The Vought FU fighter.

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, p. 540, ill.

MacNider, Hanford. Colonel MacNider flies 11,905 miles in a month.

U. S. Air Services, Vol. 12, No. 9 (Sept. 1927), Washington, D. C, pp. 44-45.

McPhee, John P. G. "Baby" airports for small communities. Popular Aviation, Vol. 1, No. 5 (Dec. 1925), Chicago, pp. 52-53.

Macready, John A. See United States: Famous flights. The nonstop flight across America.

McSwain, John J. A single department of national defense.

Aero Digest, Vol. 10, No. 1 (Jan. 1927), New York, pp. 9, 73-74.

Madagascar. Paris-Madagascar en avion.

L'Aéronautique, 9me année, No. 94 (mars 1927), Paris, pp. 65-66, map, ill.

--See Ducout, Marcel : La liaison France-Madagascar.

Magnan. See Huguenard, Magnan et Sainte-Laguë: Sur la détermination cinématographique des polaires en vol des oiseaux, des planeurs et des avions.

Magnan, A. See Huguenard, E., A. Magnan et A. Planoil: Sur un principe nouveau permettant la réalisation d'appareils mesurant les conditions aérodynamiques du vol des avions.

Magnetos. Splitdorf Model VA double magneto.

U. S. Air Services, Vol. 12, No. 11 (Nov. 1927), Washington, D. C, p. 41, ill.

- See Splitdorf magneto: Splitdorf model VA aircraft magneto.

- See Young, A. P.: Magnetos.

Mahoney, B. F. See Boone, Andrew R.: Five years of progress. An interview with B. F. Mahoney.

Maidens, A. L. See Batson, A. S., A. S. Halliday, and A. L. Maidens: The distribution of pressure over a monoplane and a biplane with wings of unequal chord and equal span.

Mail. Air mail facts and figures.

Aviation, Vol. 23, No. 8 (Aug. 22, 1927), New York, p. 419, tabl.

- Air mail makes progress.

Slipstream, Vol. 8, No. 9 (Sept. 1927), Dayton, Ohio, p. 50.

- Air mail map isn't what it used to be.

U. S. Air Services, Vol. 12, No. 1 (Jan. 1927), Washington, D. C, p. 32.

Mail. Air mail to foreign countries.

Aviation, Vol. 22, No. 25 (June 20,1927), New York, p. 1394.

- American Post Office commemorates Lindbergh's flight.

Aero Field, Vol. 2, No. 4 (July 1927), Sutton Coldfleld, England, p. 87, ill.

- Astonishing air mail bids. Contractors offer surprisingly low rates for

carrying air mail.

Aviation, Vol. 22, No. 4 (Jan. 24, 1927), New York, p. 170.

- Boeing starts Chicago-San Francisco service.

TJ. S. Air Services, Vol. 12, No. 7 (July 1927), Washington, D. C, pp. 39-41, ill.

- Details of the air mail routes. Wm. B. Oliver of Alabama gives Congress

a statement of the present situation. .

Aviation, Vol. 22, No. 7 (Feb. 14, 1927), New York, pp. 325-327, map.

- Light plants for air mail fields.

Aero Digest, Vol. 10, No. 4 (Apr. 1927), New York, p. 322, ill.

- N. A. T. awarded New York-Chicago contract.

Aviation, Vol. 22, No. 15 (Apr. 11, 1927), New York, p. 731. National Air Transport, Inc. of New York.

- La poste aérienne. Le Congrès de Bâle et la Conférence de La Haye.

L'Aérophile, 35e année, Nos. 23-24 (ler-15 déc. 1927), Paris, pp. 369-370, map.

- U. S. air mail figures.

Flight, Vol. 19, No. 38 (Sept. 22, 1927), London, p. 664, tabls.

- The U. S. air mail.

Aeroplane, Vol. 32, No. 10 (Mar. 9, 1927), London, p. 258.

- See Boeing: The Boeing mail plane.

- See Coyler, D. B.: The air mail service.

- See Lebon: Enquete technique sur l'aviation commerciale. La poste

aérienne.

- See National Air Transport: N. A. T. takes over mail.

- See Oefele, D.: Deutsche Lastenflugzeuge.

- See United States: Les avions de transport public aux États-Unis.

- See United States: La poste aérienne par entreprises privée aux États-Unis.

- See United States: Vooruitgang in het Amerikaansche luchtpostvervoer.

Maintenance. See Bruner, S.-G.: Considérations sur le vol économique des avions.

Maitland. La navigation de Maitland et Hegenberger dans le Pacifique. L'Aéronautique, 9me année, No. 103 (déc. 1927), Paris, p. 373, ill.

- See Boone, Andrew R.: Radio beacons to guide Hawaiian fliers.

- See Byrd and Maitland planes alike in design.

- See Hawaii: The Honolulu flight.

- See Hawaii: Maitland and Hegenberger fly to Hawaii.

- See Pacific: 3,800 kilomètres sans escale au-dessus du Pacifique.

Makhonine. Les essais du carburant Makhonine dans l'aviation marchande.

L'Aéronautique, 9me année, No. 93 (fév. 1927), Paris, pp. 41-43, ill.

Malaya. Air transport in Malaya.

Aeroplane, Vol. 32, No. 25 (June 22, 1927), London, p. 732, ill. Flight, Vol. 19, No. 26 (June 30, 1927), London, pp. 425-426, ill.

Malmgren, Finn. See Amundsen, Roald Engelbregt Gravning, and Lincoln Ellsworth: The first flight across the polar sea..—Weather and weather warnings during the polar flight, by F. Malmgren.

Mamer, N. B. Protecting our forests from fire.

Aero Digest, Vol. 10, No. 3 (Mar. 1927), New York, pp. 173, 246-248, ill.

Manigold, Gg. Lichtanlagen zur Sicherung des Nachtluftverkehrs.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 6. Heft (28. März 1927), München, pp. 143-145, ill.

- Der Verstoss in den Weltenraum.

Zeitschr. Flugt. Motorlufhsch., 18. Jahrg., 11. Heft (14. Juni 1927), München, pp. 249-250,

- Die Werkstoffschau. Allgemeine Ubersicht unter besonderer Berücksichtigung der Gruppe " Leichtmetalles. "

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 21. Heft (14. Nov. 1927), München, pp. 497-499.

Manly, Charles Matthews. Charles Manly.

L'Aéronautique, 9me année, No. 103 (dec. 1927), Paris, p. 372.

- Charles M. Manly.

Aeroplane, Vol. 33, No. 17 (Oct. 26, 1927), London, pp. 578-680.

- Obituary. Charles Matthews Manly.

Journ. Roy. Aero. Soc, Vol. 31, No. 203 (Nov. 1927), London, p. 1001.

Mapping. City planning and aerial maps.

American City, Vol. 37 (Aug. 1927), New York, pp. 195-196, map.

Maps. U. S. airway map completed.

Aviation, Vol. 22, No. 23 (June 6, 1927), New York, p. 1242.

"Marco Polo." The Guggenheim competition.

Flight, Vol. 19, No. 25 (June 23, 1927), London, pp. 414c-414d.

Marconi-Newton. The Marconi-Newton constant-speed windmill. A new electric power generator for aircraft.

Flight, Vol. 19, No. 28 (July 14, 1927), London, pp. 486-487, ill.

Mardles, E. W. J. See Sims, C. J., and E. W. J. Mardles: The effect of metallic sols in delaying detonation in internal combustion engines.

Margoulis, W. Nouvelles recherches expérimentales sur les hélices d'hélicoptères.

C. R. Acad. Sei., T. 184, No. 12 (21 mars 1927), Paris, pp. 735-737.

L'Aéronautique, (L'Aêrotechnique, 5e année, No. 53), 9me année, No. 96 (mai 1927), Paris, pp. 143-144, ill.

Maritime aviation. See Warner, Edward P.: Maritime aviation.

Markham, John R. See Ober, Shatswell, and John R. Markham: Interference tests on DH4B model and propeller.

Marking. Airmarking for cities.

American City, Vol. 37 (Sept. 1927), New York, p. 309, ill.

Marlowe, Gilbert. The transatlantic habit.

Airways, Vol. 3, No. 12 (Aug. 1927), London, pp. 386-388, ill.

Marseilles. Marseilles-Madagascar-Paris. A fine 17,000 mile flight in a ' ' Jupiter ' '-engined seaplane.

Flight, Vol. 19, No. 3 (Jan. 20,1927), London, pp. 34-35, ill., map.

- De tweede mailvlucht naar Marseille op 18 Maart 1927.

Het Vliegveld, Ilde Jaarg., No. 4 (Aprü 1927), Amsterdam, pp. 65-67, ill.

Marsh, W. Lockwood. The first screw propeller.

Engineer, Vol. 144, No. 3744 (Oct. 14,1927), London, pp. 415-416.

- Pages from the past. XXI. The aerial bombardment of the "Goeben"

and "Breslau" in January, 1918. Airways, Vol. 3, No. 6 (Jan. 1927), London, p. 160.

- Pages from the past XXII. A French balloon of 1872 whose motive

power was eight men turning a crank. Airways, Vol. 3, No. 6 (Feb. 1927), London, p. 198.

Marshall, Dorothy. Further experiments on the relation between skin friction and heat transmission.

Techn. Kept. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 55-73, diagr., tabls.

Marshall, E. Practicability of transocean air service.

Current History Magazine of N. Y. Times, Vol. 26 (July 1927), New York, pp. 539-542.

Martens, A. Mortorlos in den Lüften. Unter Mitarbeit der bekanntesten deutschen Segelflieger, zusammengestellt von A. Martens.

Frankfurt a,M.-Heddernheim, Kupferwerke. Erschienen im Selbstverlag, pp. 99.

Martin. The Glenn L. Martin torpedo-bombing-scouting plane.

TT. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. C, p. 31, III.

- An interesting aircraft design. P. M. 3.

Aircraft Engineer, suppl. to Flight, Vol. 19, No. 17 (Apr. 28,1927), London, pp. 262a-262d.

- "Martin 74" is a bomber pursuit plane.

TJ. S. Air Services, Vol. 12, No. 6 (June 1927), Washington, D. C, pp. 31-34, ill.

- A new kind of three-purpose plane. Model 74.

Aviation, Vol. 22, No. 22 (May 30,1927), New York, pp. 1124-1126, ill

Martin, E. S. Re-discovering Europe.

Harper's Monthly Magazine, Vol. 155 (Aug. 1927), New York, pp. 389-392.

Martinot-Lagarde. Améliorations à apporter aux groupes motopropulseurs.

La Technique Aéronautique, 18e année, n. s. Nos. 65, 66 (15 mars, 15 avril 1927), Paris, pp 91-95, 98-104.

Martinot-Legarde, C. Les accessoires et l'équipement des avions actuels. Technique Moderne, 19e année, No. 5 (1er mars 1927), Paris, pp. 143-147, ill.

- Documents et données techniques statistique des causes de pannes de

moteur et améliorations à apporter aux groupes motopropulseurs.

L'Aéronautique, (L'Aérotechnique, 5e année, No. 52) (9me année, No. 95 (avril 1927), Paris, pp. 114-115.

Martyn, T. J. C. Down to the sea in airplanes.

Independent, Vol. 119 (Oct. 15, 1927), Boston, pp. 374-376.

Marvin, Charles F., Jr. Combustion time in the engine cylinder and its effect on engine performance.

National Advisory Committee for Aeronautics, Report No. 276, November 10, 1927, Washington, Government Printing Office, 1927, pp. 16, ill., diagrs.

Massachusetts Institute of Technology. Guggenheim Fund endows M. I. T. Appropriates $230,000 for new aeronautics building to be completely equipped for instruction and research.

Aviation, Vol. 22, No. 5 (Jan. 31, 1927), New York, p. 219, ill.

Materials. See Gough, H. J., S. J. Wright, and D. Hanson: An experiment to determine if slip can be detected during the unloading portion of a cycle of repeated tensile stresses.

- See Gough, H. J., and H. J. Tapsell: Some comparative fatigue tests in

special relation to the impressed conditions of test.

Materials. See Jenkin, C. F. : High-frequency fatigue tests.

- See Richardson, H. C. : Modern aircraft structural materials.

- See Southwell, R. V., and H. J. Gough: On the concentration of stresses in

the neighbourhood of a small spherical flaw; and on the propagation of fatigue fractures in "statically isotropic" materials.

- See Sutcliffe, W. : Testing of aircraft materials.

- See Wolff, E. B., en L. J. G. van Ewijk: Mechanical properties of some

materials, that are used for the construction of aeroplanes.

Maugeri, Franco. Esplorazione navale e navi portaerei.

Rivista Aeronautica, Anno 3, N. 6 (Giugno 1927), Roma, pp. 18-27

Maxson, Herbut W. The National Balloon Race.

Slipstream, Vol. 8, No. 4 (Apr. 1927), Dayton, Ohio, pp. 11-12, ill.

Mayo, R. H. Het ontwerpen van verkeersvliegtuigen uit een oogpunt van exploitatie.

Het Vliegveld, Ilde Jaarg., No. 4 (April 1927), Amsterdam, pp. 122-124, ill.

- Some notes on the design of commercial aircraft from the operational point

of view.

Journ. Roy. Aer. Soc, Vol. 31, No. 197 (May 1927), London, pp. 359-392.

Mazer. Les engins de sauvetage.

La Technique Aéronautique, 18e année, n. s. No. 65 (15 mars 1927), Paris, pp. 77-83, ill.

Mead, George J. Journeying with the Boeing air mail.

Aviation, Vol. 23, No. 17 (Oct. 24, 1927), New York, pp. 990-994, ill.

Mechanics of flight. Meccanica del volo. Aerobazia aerea.

L'Aerotecnica, Vol. 7 (Anno 5), N. 8 (Sett. 1927), Pisa, pp. 595-601, ill.

Mecozzi, Amedeo. L'ispezione di S. E. Italo Balbo alle nostre basi aeree mediterranee.

Rivista Aeronautica, Anno 3, N. 5 (Mag. 1927), Roma, pp. 3-54, ill.

- L'offesa a volo rasente.

Rivista Aeronautica, Anno 3, No. 10 (Ott. 1927), Roma, pp. 12-35.

- Il volo degli uccelli in due recenti pubblicazioni vinciane.

Rivista Aeronautica, Anno 3, N. 6 (Giugno 1927), Roma, pp. 43-77, ill.

Medicine. Idées nouvelles sur l'avion sanitaire.

L'Aéronautique, 9me année, No. 101 (oct. 1927), Paris, p. 312, ili.

- Medical examiners for pilot's license.

Aero Digest, Vol. 11, No. 6 (Dec. 1927), New York, p. 653.

- See Di Nola, A.: Importanza della medicina nell'aviazione ed organizzazione del servizio sanitario aeronautica.

- See Siebenhüner, W. : Sanitätsflugzeuge.

Mehren, E. J. Air travel in Germany a business built on practical economics. Amer. Mach., Vol. 67, No. 2 (July 14, 1927), New York, pp. 76a-76c.

- Traveling the air in Germany.

Engineering News Record, Vol. 99, No. 5 (Aug. 4, 1927), New York, pp. 172-174, ill.

Meijer, W. L. Groeneveld. De aansprakelijkheid van den vervoerder bij het Internationale Luchtvervoer.

Het Vliegveld, Ilde Jaarg., No. 4 (Mei 1927), Amsterdam, pp. 121-122.

Meissner, Karl Leo. Aluminium-Gusslegierungen.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 10., 11. Heft (28 Mai, 14. Juni 1927), München, pp. 232-236, 257-267,^11.

Meister, L. G. Airplanes for individual ownership.

Journ. Soc. Automotive Engineers, Vol. 20, No. 3 (Mar. 1927), New York, pp. 341-345, ill.

mêlin, André. See Blanchet, Georges: Aviateurs contemporains. André Mélin.

Memphis. The Memphis model tournament.

Popular Aviation, Vol. 1, No. 5 (Dec. 1927), Chicago, pp. 21-23, ill. •

Mengden. See Grenier, P. : Un traceur de route pour aéronef : l'Autoestimo-graphe Mengden.

Mercedes-Daimler. Mercedes-Daimler.

Aero Digest, Vol. 10, No. 1 (Jan. 1927), New York, p. 44, ül.

Meredith, F. W. Note on the minimum speed from which the direction of a gliding aeroplane can be changed to a horizontal path for landing.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 511515, diagr.

Mermoz, Jean. See Blanchet, Georges: Aviateurs contemporains. Quelques pilotes de la ligne Latécoère: Casablanca-Dakar.

Merritt, D. America in the air; interview with C. L. Lawrance. Outlook, Vol. 147 (Oct. 19, 1927), New York, pp. 207-208, ill.

Metal construction. All-metal cabin plane.

Scient. Amer., Vol. 137 (Dec. 1927), New York, p. 539, ill.

- Metal aircraft construction at Vickers. Some interesting new forms

developed.

Flight, Vol. 19, No. 37 (Sept. 15, 1927), London, pp. 646-649, diagr.

- Metal planes for high flyers.

Literary Digest, Vol. 95 (Nov. 5, 1927), New York, pp. 67-69.

- See Airships: The all-metal airship.

- See Airships: Metal-clad rigid airship development".

- See Hayes, R. M.: The possibilities of metal construction with special

reference to the metal skin.

- See Lee, John G.: Metal wing spars.

- See Rohrbach, A.: Economical production of all-metal airplanes and

seaplanes.

Metals. See Hausen, J.: Probleme der Korrosionsforschung und des Metallschutzes auf der Jahresversammlung 1926 des Reichsausschusses für Metallschutz.

- See Manigold, Gg.: Die Werkstoffschau. Allgemeine Ubersicht unter

besonderer Berücksichtigung der Gruppe "Leichtmetalles."

- See Monel: Un matériau nouveau: le "Monel Plymetal."

- See Sisco, F. T. : New metals for aircraft.

- See Williams, S. G.: Metals and their heat treatment.

Meteore. "Meteore 63" commercial seaplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 41, Washington, May 1927, pp. 5, ill.

- The Meteore three-engine flying boat.

Aviation, Vol. 22, No. 13 (Mar. 28, 1927), New York, p. 625, ill.

Meteorology. Aviation weather problems.

Science, n. s. Vol. 66 (Oct. 28, 1927), Garrison, N. Y., sup. 12.

Meteorology, Cours de meteorologie à l'usage des observateurs de l'Office. National Météorologique. 6e et 7e parties. Paris, Gauthier-Villars, éditeur.

- New weather broadcasting system.

Aviation, Vol. 22, No. 22 (May 30,1927), New York, p. 1134.

- Radio weather maps.

Aero Digest, Voi. 11, No. 2 (Aug. 1927), New York, p. 220, ili.

- See Burghardt, Gotthard: Fliegerwetterkunde. Meteorologische Merkbuch. Flugmeteorologe der Deutschen Seewarte in Hamburg.

- See Clayton, H. Helm: World weather records.

- See Eredie, Filippo: Annali dell' ufficio presagi (Ministero dell'aeronautica;

aviazione civile e traffico aereo). Vol. 1: Les osservazioni aerologiche e meteorologiche eseguite dal 1911 al 1925 nella stazione aerologica sperimentale de Vigna di Valle (Bracciano, Roma).

- See Eredia, Filippo: Il nuovo meteorografo dell'Ufficio Presagi.

- See Georgii, Walter: Flugmeteorologie.

- See Georgii, Walter: Die meteorologischen Grundlagen des transatlantischen Luftverkehrs.

- See Giblett, M. A.: Line-squalls.

- See Gregg, Willis Ray: Meteorology of the North Atlantic and trans-Atlantic flight.

- See Kobayasi, Tatuo: On the mechanism of cyclones and anticyclones.

- See Ramsey, Logan C, and Earle H. Kincaid: Analysis of weather conditions on recent trans-atlantic flights.

- See Schubart, L. : Praktische Gesichtspunke für den Ozeanflugverkehr.

- See Verdurand, Abel : Utilisation des statistiques météorologiques pour les

avant-projets de lignes aériennes à service quotidien.

Metford, L. S. When 150 feet was altitude. Early days of flying in England. tj. S. Air Services, Vol. 12, No. 10 (Oct., 1927), Washington, D. 0., pp. 44-47.

Mettam, H. A. Comparison of aircraft performances.

Aircraft Engineer suppl. to Plight, Vol. 19, No. 8 (Feb. 24, 1927), London, pp. lOOa-lOOc.

- Handicapping by formula.

Aircraft Engineer suppl. to Flight, Vol. 19, No. 30 (July 28, 1927), London, pp. 518a-518e.

- Handicapping in the King's Cup race.

Aircraft Engineer suppl. to Flight, Vol. 19, No. 38 (Sept. 22,1927), London, p. 668d.

Meyer, C. W. Erich. Luftfahrzeugnotoren.

Dresden, Verlag Deutsche Motor-Zeitschrift, 1927.

Meyers. The Meyers "Midget" light 'plane.

Flight, Vol. 19, No. 3 (Jan. 20, 1927), London, pp. 33-34, ill.

Meyers, C. W. Class B air derby won by C. W. Meyers.

Aviation, Vol. 23, No. 14 (Oct. 3, 1927), New York, pp. 808-809, ill.

Michelin cup. Les Coupes Michelin 1926-1927.

L'Aérophile, 35e année, Nos. 15-16 (ler-15 aoüt 1927), Paris, pp. 235-236.

Milch, Erhardt. German night air transportation.

Aviation, Vol. 22, No. 2 (Jan. 10,1927), New York, pp. 76-77, ill.

Miles, Russell H. How the New York to Paris plane was built.

Aviation, Vol. 22, No. 25 (June 20,1927), New York, pp. 1352-1353, ill.

Military aeronautics. Air defence exercises.

Flight, Vol. 19, No. 32 (Aug. 11, 1927), London, pp. 565, 569.

- Bomb and gas-proof cities of future.

Pop. Mech., Vol. 48 (Dec, 1927), Chicago, pp. 924-927, ill.

- Luftschutz.

Die Luftwacht, Sonderheft 1, Juni 1927, Berlin, pp. 30-37, ill.

- On air power.

Aeroplane, Vol. 33, No. 24 (Dec. 14,1927), London, pp. 781-784.

- Review of National Guard Air Corps.

Slipstream, Vol. 8, No. 8 (Aug. 1927), Dayton, Ohio, pp. 29-30, 34, ill.

- Das Volk und sein Verhältnis zu seiner bewaffneten Macht.

Die Luftwacht, Sonderheft 1, Juni 1927, Berlin, pp. 37-43.

- See Böhm, Alois Robert: Militärische Bebachtungen zum Alpenflugwettbewerb.

- See Bouché, Henri: Pendant qu'on parle à Genève. La limitation des

armements aériens et l'aéronautique Allemande.

- See Caproni: L'apporto degli apparecchi Caproni ail' aviazione Italiana.

Bombardamento aereo e vita in guerra di una nazione.

- See Giesler: Die Aussichtslosigkeit der nationalen Verteidigung ohne

Luftschutz.

- See Kirschner, A.: Das Weltflugwesen im Jahre 1927. III. Luftstreitkräfte.

- See Montarby: Ist das einmotorige Flugzeug ein Bombenflugzeug.

- See Sandkamp, F.: Kritische Betrachtungen zu Oberst Eugène Pagézy

"Schiessen auf Flugzeuge und Luftschutz."

- See Weyl, Alfred Richard: Die Flugwaffe in Krieg und Frieden.

Miller, R. A. Compressive strength of duralumin channels.

Air Corps Information Circular, Vol. 6, No. 598 (Nov. 1, 1927), Washington, pp. 20, ill., diagrs., tabls.

- Shear strength of plywood webs of box beams.

Air Corps Information Circular, Vol. 6, No. 587 (June 25, 1927), Washington, pp. 8, diagrs., tables.

Miller, Roy G. A load factor formula.

National Advisory Committee for Aeronautics, Technical Notes No. 263, Washington, August 1927, pp. 8, diagrs., tables.

- Metal aircraft.

Tech Engineering News, Vol. 8, No. 3 (April 1927), Cambridge, p. 117.

Minelli, Carlo. Verifica di stabilità della fusoliera tetraedra.

L'Aerotecnica, Vol. 7 (Anno 5), N. 7 (Luglio 1927), Pisa, pp. 416-422, ill.

Mingos, Howard. See Lehmann, Ernst A., and Howard Mingos: The Zeppelins; the development of the airship, with the story of the Zeppelin air raids in the world war.

Mitchell, William. Airplanes in national defense.

Annäls, American Academy Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 38-42.

- We must organize now.

Aero Digest, Vol. 10, No. 2 (Feb. 1927), New York, pp. 87,151, ill.

- What trans-Atlantic flights augur for the future.

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, pp. 517, 609-612, ill.

Mitchell trophy. See Woodring, Irving A.: Lieut. Irving A. Woodring wins Mitchell trophy pursuit race.

Mittelholzer. See Santa Maria: II volo del "Santa Maria." DalT America latina all' America anglosassone.

Mittelholzer, Walter. Mittelholzer, Swiss pilot, makes great flight in '' Dornier-Merkur ' ' seaplane.

TJ. S. Air Services, Vol. 12, No. 5 (May 1927), Washington, D. C, p. 26, ill.

- Mittelholzer's flight through Africa in a Dornier "Merkur" airplane.

Engineering Progress, Vol. 8, No. 5 (May 1927), Berlin, p. 118, ill.

Mitten-Braley control. The Mitten-Braley airplane control.

Aviation, Vol. 23, No. 2 (July 11, 1927), New York, pp. 83, ill., diagr.

Mock, Richard M. The distribution of loads between the wings of a biplane having décalage.

National Advisory Committee for Aeronautics, Technical Notes No. 269, Washington, November 1927, pp. 33, 111., diagrs., tables.

- Geared down propellers and the efficiency of commercial airplanes.

Aviation, Vol. 22, No. 22 (May 30, 1927), New York, pp 1137-1140, ill.

Models. First national playground miniature aircraft tournament. Playground, Vol. 21 (Nov. 1927), New York, p. 404, ill.

- Model airplane construction. Lange 262 4/5 seconds duration model.

Popular Aviation, Vol. 1, No. 5 (Dec. 1927), Chicago, pp. 39-41, ill.

—— Model airplane fittings.

Scient. Amer., Vol. 137 (Dec. 1927), New York, pp. 543-544, ill.

- Model airplane propellers.

Scient. Amer., Vol. 137 (Dec. 1927), New York, p. 544, diagr.

- Tools and materials for model aircraft construction.

Scient. Amer., Vol. 137 (Nov. 1927), New York, p. 448, ill., diagr.

- Young America builds airplanes.

Playground, Vol. 21 (Aug. 1927), New York, pp. 244-245.

- See Chabonat, M.: Les modèles réduits d'avions.

- See Memphis: The Memphis model tournament.

- See Pond, Bertram: Model airplane construction.

Möller, W. Der Flugmotor. Teil I: Grundlagen.

Berlin-Charlottenburg 2, Verlag C. J. E. Volckmann Nf., pp. 71, ill.

Möwe und Ente. Möwe und Ente, zwei neue deutsche Flugzeuge.

Forschungen und Fortschritte, 3. Jahrg., No. 34 (1. Dez. 1927), Berlin, pp. 270-271, ill.

Moffett, William A. Admiral Moffett tells of aviation progress.

u. S. Air Services, Vol. 12, No. 1 (Jan. 1927), Washington, D. C, pp. 39-40.

Mohawk. The Mohawk "Pinto."

Aviation, Vol. 23, No. 21 (Nov. 21, 1927), New York, pp. 1244-1245, ill.

- The Mohawk "Pinto" monoplane.

Aero Digest, Vol. 11, No. 6 (Dec. 1927), New York, pp. 690, 692, ill., diagr.

Monel. Un matériau nouveau: le "Monel Plymetal."

L'Aéronautique, (L'Aérotechnique, 5me année, No. 58), 9me année, No. 101 (oct. 1927), Paris p. 317.

Monocoupe. An American light aeroplane.

Aeroplane, Vol. 33, No. 25 (Dec. 21, 1927), London, p. 826, ill.

Monoplanes. See Loening, Grover: The revival of the monoplane.

Montarby. Ist das einmotorige Flugzeug ein Bombenflugzeug? Die Luftwacht, Heft 7, Juli 1927, Berlin, pp. 374-379, ill.

MoNTECEiiio. See Gustosa, Corrado: L'impianto frigorifero della camera pneumatica di Montecelio.

Mooring. Floating mooring station for transoceanic airships. Slipstream, Vol. 8, No. 2 (Feb. 1927), Dayton, Ohio, p.'28, ill.

Mooring mast. See Cardington: The Cardington airship shed and mooring tower.

- See Parry, Thos. W., jr.: New mooring mast at Scott Field.

Morley-Jenkins, F. Aerial menageries.

Aero Field, Vol. 1, No. 12 (Mar. 1927), London, pp. 267-268, 282, ill.

- The first hydrogen balloons.

Aero Field, Vol. 1, No. 11 (Feb. 1927), London, pp. 249-250, 262, ill.

Morris, Fred. What aviation can do for the Midlands.

Aero Field, Vol. 2, No. 4 (July 1927), Sutton Coldfleld, England, pp. 83-84, 94.

Morris, J. The articulated connecting rod. Some observations on the papers of Messrs. Fearn and Farren.

Journ. Roy. Aer. Soc, Vol. 31, No. 196 (Apr. 1927), London, pp. 343-344.

- Dynamical forces in aircraft engines. Some observations on Major

Carter's paper.

Journ. Roy. Aer. Soc, Vol. 31, No. 198 (June 1927), London, pp. 577-585.

Mobsman, Robert C. See Clayton, H. Helm: World weather records. " Moth." The 1927 model " Moth."

Flight, Vol. 19, No. 4 (Jan. 27, 1927), London, pp. 47-48, ill.

Motormeters. Pour mesurer la température interne des moteurs.

L'Aéronatique (L'Aêrotechnique, 5me année, No. 60), 9me année, No. 103 (déc. 1927), Paris, p. 392, ill.

Mouette. Les embarcations pneumatiques "Les Mouettes".

L'Aéronautique, 9me année, No. 103 (déc. 1927), Paris, p. 407, ill.

Moullin, E. B. On the equivalence between the dynamical system of a multi crank flywheel system and a certain electrical circuit, with some suggestions for measuring critical speeds and shaft stresses by analogy.

Aeronautical Research Committee, Reports and Memoranda, No. 1045 (E. 21), Apr., 1926, London, 1927, pp. 9.

Mucklow, G. F. The effect of reduced intake-air pressure and of hydrogen on the performance of a solid injection oil engine.

Journ. Roy. Aer. Soc, Vol. 31, No. 193 (Jan. 1927), London, pp. 17-59, diagr., tabls.

Müller, Fritz. See Bredow, Traugott, und Fritz Müller: Das Luftverkehrsgesetz vom 1. August 1922.

Müller, L. Die letzte Bombe.

Die Luftwacht, Sonderheft 1, Juni 1927, Berlin, pp. 46-48.

Müller, Waldemar. Fallschirme für Luftfahrzeuge.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 20. Heft (28. Okt. 1927), München, pp. 470-481, ill.

Muffling, A. Van. Human flight throughout the ages.

Annals, American Academy Political and Social Science, Vol. 131 (May 1927) Phüadelphia, pp. 1-6.

Muller, Horst. See Everling, E., und Horst Muller: Leistungsberechnung von Flugzeugen.

Mulligan, J. L. Where are the fliers.

Literary Digest, Vol. 93 (June 4, 1927), New'York, p. 33.

Mullinix, H. M. Aircraft power plant installations.

Journal of the American Society of Naval Engineers, Vol. 39, No. 1 (Feb. 1927), Washington, pp. 68-75.

Munday, A. Sky high; a story of Canadian flying men.

Canadian Magazine, Vol. 68 (Nov.-Dec. 1927), Toronto, pp. 8-11, 10-11, ill.

Munday, A. H. See Wemp, B., and A. H. Munday: Canadian pilots in the Great War.

Munk, Max Michael. The air forces on a systematic series of biplane and triplane cellule models.

National Advisory Committee for Aeronautics, Report No. 256, April 25, 1927, Washington, Government Printing Office, 1927, pp. 37, ill., diagrs., tables.

Mureaux. The Mureaux "Brunet 3C2" pursuit airplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 42, Washington, May 1927, pp. 5, ill.

Murphy, Wm. H. The interlocking equisignal radio beacon.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, pp. 172-175, ill., diagr.

Murray, Stella Wolfe. Gaza, the airport of Palestine.

Airways, Vol. 3, No. 11 (July 1927), London, pp. 351-352, ill.

- London to Cairo by air.

Airways, Vol. 3, No. 6 (Feb. 1927), London, pp. 173-175, ill.

Mussolini. Premier Mussolini salutes American aviation.

Aviation, Vol. 22, No. 14 (Apr. 4,1927), New York, pp. 666-669, ill.

Musto, Carlo. II nuovissimo diritto delle comunicazioni e dei trafnci. (Comunicazioni radioelettriche ed aeree).

L'Aerotecnica, Giornale ed Atti dell'Associazione Italiana di Aerotacnica, Vol. 7, N. 4, 5 (Aprile-Maggio 1927), Pisa, pp. 205-219, 247-280.

N

Nagai, Yuzabro. See Tanaka, Yoshio, Yuzaburo Nagai, and Kinsei Akiyama: Lower limit of inflammability of ethyl alcohol, ethyl ether, methyl cyclo-hexane and their mixtures.

- See Tanaka, Yoshio, and Yuzabro Nagai: Studies on inflammability of

hydrogen. I. Influence of ethyle bromide on the limits of inflammability of

hydrogen-air mixtures.

- See Tanaka, Yoshio, and Yuzabro Nagai: Studies on inflammability of

hydrogen. II. Influence of organic bromine and iodine compounds on the upper limit of inflammability of hydrogen-air mixtures.

- See Tanaka, Yoshio, and Yuzabro Nagai: Studies on inflammability of

hydrogen. III. Influence of di-ethyl selenide on the limits of inflammability of hydrogen-air mixtures.

- See Tanaka, Yoshio, and Yuzabro Nagai: Studies on inflammability of

hydrogen. IV. Influence of hydrogen selenide on the limits of inflammability of hydrogen-air mixtures.

Napier. Facts and figures about the Napier "Lion" racing engine. Aviation, Vol. 23, No. 18 (Oct. 31, 1927), New York, p. 1063, ill.

- The Napier Lion series VIII.

Aeroplane, Vol. 32, No. 2 (Jan. 12,1927), London, p. 46, ill. Flight, Vol. 19, No. 1 (Jan. 6,1927), London, pp. 9-10, ill.

National Advisory Committee for Aeronautics. Aeronautics. Twelfth annual report of the National Advisory Committee for Aeronautics, 1926. Including technical reports Nos. 233-256.

Washington, Government Printing Office, 1927, pp. 631, ill., tables, diagrs.

Technical Reports: No. 233. The aerodynamic characteristics of seven frequently used wing sections at full Reynolds number, by Max M. Munk and Elton W. Miller, pp. 71-86. No. 234. Three methods of calculating range and endurance of airplanes, by Walter S. Diehl, pp. 87-104. No. 235. Interaction between air propellers and airplane structures, by W. F. Durand, pp. 105-127. No. 236. Tests on airplane fuselages, floats and hulls, by Walter S. Diehl, pp. 129-150. No. 237. Tests on thirteen Navy type model propellers, by W. F. Durand, pp. 151-165. No. 238. The effect of flight path inclination on airplane velocity, by Walter S. Diehl, pp. 167-177. No. 239. Power output and air requirements of a two-stroke cycle engine for aeronautical use, by C. R. Paton and Carlton Kemper, pp. 179-189. No. 240. Nomenclature for aeronautics, by National Advisory Committee for Aeronautics, pp. 191-265. No. 241. Electrical characteristics of spark generators for automotive ignition, by R. B. Brode, D. W. Randolph, and F. B. Silsbee, pp. 267-296. No. 242. Characteristics of a twin-float seaplane during take-off, by John W. Crowley, jr., and K. M. Ronan, pp. 297-310. No. 243. A preliminary study of fuel injection and compression ignition as applied to an aircraft engine cylinder, by Arthur W. Gardiner, pp. 311-326. No. 244. Aerodynamic characteristics of airfoils-IV continuation of reports Nos. 93, 124, and 182, by National Advisory Committee for Aeronautics, pp. 327-368. No. 245. Meteorological conditions along airways, by W. R. Gregg, pp. 369-384. No. 246. Tables for calibrating altimeters and computing altitudes based on the standard atmosphere, by W. G. Brombacher, pp. 385-408. No. 247. Pressure of air on coming to rest from various speeds, by A. F. Zahm, pp. 409-415. No. 248. The corrosion of magnesium and of the magnesium aluminum alloys containing manganese, by J. A. Boyer, pp. 417-454. No. 249. A comparison of the take-off and landing characteristics of a number of service airplanes, by Thomas Carroll, pp. 455-466. No. 250. Description of the N. A. C. A. universal test engine and some test results, by Marsden Ware, pp. 467-481. No. 251. Approximations for column effect in airplane wing spars, by Edward P. Warner and Mac Short, pp. 483-502. No. 252. The direct measurement of engine power on an airplane in flight with a hub type dyna -mometer, by W. D. Gove and M. W. Green, pp. 503-513. No. 253. Flow and drag formulas for simple quadrics, by A. F. Zahm, pp. 515-537. No. 254. Distribution of pressure over model of the upper wing and aileron of a Fokker D-VII airplane, by A. J. Fairbanks, pp. 539-552. No. 255. Pressure distribution over airfoils at high speeds, by L. J. Briggs and H. L. Dryden, pp. 553-594. No< 256. The air forces on a systematic series of biplane and triplane cellule models, by Max M. Munk, pp. 595-631.

- Aeronautics. Thirteenth annual report of the National Advisory Committee for Aeronautics 1927. Administrative report without technical reports.

Washington, United States Government Printing Office, 1927, pp. 76.

- Aircraft Circulars No. 27. Dyle and Bacalan metal monoplane, D. B.

10, Night bomber.

National Advisory Committee for Aeronautics, January 11, 1927,1 (mimeographed), Washington, January 1927, pp. 6, ill.

i Date of mailing.

National Advisory Committee for Aeronautics. Aircraft Circulars No. 28. Combat and bombing airplane, Amiot 120 B 3.

National Advisory Committee for Aeronautics, January 26, 1927 (mimeographed), Washington, January 1927, pp. 5, ill.

- Aircraft Circulars No. 29. Nieuport-Delage pursuit airplane 48 C. 1.

National Advisory Committee for Aeronautics, January 29, 1927 (mimeographed), Washington, January 1927, pp. 6, ill.

:- Aircraft Circulars No. 30. The "Dornier Mercury" commercial airplane

with B. M. W. VI 600 HP. engine.

National Advisory Committee for Aeronautics, February 12, 1927 (mimeographed), Washington, February 1927, pp. 10, ill,

- Aircraft Circulars No. 31. Dornier "Superwal" commercial seaplane.

Two Rolls-Royce "Condor" 650 HP. engines.

National Advisory Committee for Aeronautics, February 25, 1927 (mimeographed), Washington, February 1927, pp. 7, ill.

- Aircraft Circulars No. 32. Macchi M. 39 seaplane. Single seat racer

with an 800 HP. Fiat "A-S2" engine.

National Advisory Committee for Aeronautics, March 4, 1927 (mimeographed), Washington, March 1927, pp. 3, ill. From "L'Ala dTtalia," November 1926.

- Aircraft Circulars No. 33. "Savola" seaplane S. 55 (Military or commercial).

National Advisory Committee for Aeronautics, March 11, 1927 (mimeographed), Wash, ington, March 1927, pp. 4, ill.

- Aircraft Circulars No. 34. Vojenska-Smolik S. 16 airplane. All metal

long-distance observation biplane.

National Advisory Committee for Aeronautics, March 18, 1927 (mimeographed), Washington, March 1927, pp. 5, ill. From "Flight," January 13, 1927.

- Aircraft Circulars No. 35. Richard-Penhoet commercial seaplane.

National Advisory Committee for Aeronautics, March 25, 1927 (mimeographed), Washington, March 1927, pp. 14, ill.

From "Bulletin de la Chambre Syndicale des Industries Aéronautiques" September-De« cember 1926.

- Aircraft Circulars No. 36. The Rohrbach "Robbe" RO VII seaplane

(Military or commercial).

National Advisory Committee for Aeronautics, April 1, 1927 (mimeographed), Washington, April 1927, pp. 6, ill.

- Aircraft Circulars No. 37. The François Villiers marine pursuit airplane.

National Advisory Committee for Aeronautics, April 8,1927 (mimeographed), Washington, April 1927, pp. 4, ill.

- Aircraft Circulars No. 38. Heinkel H. e. 5 commercial seaplane. (Winner

of the 1926 German seaplane contest at Warnemünde).

National Advisory Committee for Aeronautics, April 15, 1927 (mimeographed), Washington, April 1927, pp. 6, ill.

- Aircraft Circulars No. 39. Lioré-Olivier LeO 194 seaplane.

National Advisory Committee for Aeronautics, April 29, 1927 (mimeographed), Washington, April 1927, pp. 6, ill. From "L'Aéronautique," February 1927.

- Aircraft Circulars No. 40. Training airplane "Avia B. H. 11".

National Advisory Committee for Aeronautics, May 6, 1927 (mimeographed), Washington, May 1927, pp. 4, ill.

--Aircraft Circulars No. 41. "Meteore 63" commercial seaplane.

National Advisory Committee for Aeronautics, May 13,1927 (mimeographed), Washington, May 1927, pp. 5, ill.

National Advisory Committee for Aeronautics. Aircraft Circulars No. 42. The Mureaux " Brune t 3C2" pursuit airplane.

National Advisory Committee for Aeronautics, May 20,1927 (mimeographed), Washington, May 1927, pp. 5, ill.

- Aircraft Circulars No. 43. Fiat C. R. 20 pursuit airplane.

National Advisory Committee for Aeronautics, May 26, 3.927 (mimeographed), Washington, May 1927, pp. 6, ill.

- Aircraft Circulars No. 44. The Rohrbach "Rocco" seaplane. New

German commercial seaplane with two Rolls-Royce "Condor" engines.

National Advisory Committee for Aeronautics, June 3, 1927 (mimeographed), Washington, June 1927, pp. 9, ill.

- Aircraft Circulars No. 45. The Blackburn "Bluebird". Two-seat

training and sport airplane.

National Advisory Committee for Aeronautics, June 10, 1927 (mimeographed), Washington, June 1927, pp. 6, ill.

- Aircraft Circulars No. 46. Focke-Wulf "G. L. 18". Twin-engine 150

H. P. commercial airplane, by J. Serryer.

National Advisory Committee for Aeronautics, June 17, 1927 (mimeographed), Washington, June 1927, pp. 5, ill.

- Aircraft Circulars No. 47. Junkers airplane "G 24". All-metal commercial airplane.

National Advisory Committee for Aeronautics, June 30, 1927 (mimeographed), Washington, June 1927, pp. 6, ill.

- Aircraft Circulars No. 48. The Gloster "Gambet" airplane. A deck-landing ship's fighter fitted with a 420 HP. Bristol Jupiter VI engine.

National Advisory Committee for Aeronautics, July 8, 1927 (mimeographed), Washington, July 1927, pp. 5, ill. From "The Aeroplane," June 1, 1927.

-- Aircraft Circulars No. 49. The Avro "Gosport," 504 R. A new training

airplane.

National Advisory Committee for Aeronautics, July 15,1927 (mimeographed), Washington, July 1927, pp. 5, ill. From "Flight" April 15, 1926.

- Aircraft Circulars No. 50. "Levasseur 8" transatlantic airplane.

National Advisory Committee for Aeronautics, July 29, 1927 (mimeographed), Washington, August 1927, pp. 8, ill. From "L'Aéronautique," June 1927 and "L'Aêrophile" June 1927.

- Aircraft Circulars No. 51. Caproni airplane Ca 73 (Commercial) and

Ca 73 ter (Military).

National Advisory Committee for Aeronautics, August 5, 1927 (mimeographed), Washington, August 1927, pp. 4, ill.

- Aircraft Circulars No. 52. The Boeing mail airplane.

National Advisory Committee for Aeronautics, August 12, 1927 (mimeographed), Washington, August 1927, pp. 4, ill.

- Aircraft Circulars No. 53. The Westland "Widgeon III," "Cirrus II"

or "Genet II" engine.

National Advisory Committee for Aeronautics, August 19, 1927 (mimeographed), Wash, ington, August 1927, pp. 8, ill. From "Flight," July 28,1927.

- Aircraft Circulars No. 54. Junkers commercial airplane G. 31.

National Advisory Committee for Aeronautics, August 31, 1927 (mimeographed), Washington, August 1927, pp. 7, ill. From "Zeitschrift des Vereines deutscher Ingenieure" May 7, 1927.

- Aircraft Circulars No. 55. " Travel Air" commercial airplane—type 5000.

National Advisory Committee for Aeronautics, September 9, 1927 (mimeographed), Washington, September 1927, pp. 8, ill.

National Advisory Committee for Aeronautics. Aircraft Circulars No. 56. Training airplane "Arado SC 1."

National Advisory Committee for Aeronautics, September 16, 1927 (mimeographed), Washington, September 1927, pp. 7, ill. From "Flugwoche," June 22, 1927.

- Aircraft Circulars No. 57. The De Havilland "Tiger Moth." A low

wing monoplane.

National Advisory Committee for Aeronautics, October 7, 1927 (mimeographed), Washington, October 1927, pp. 6, ill. From "Flight," September 22, 1927.

- Aircraft Circulars No. 58. The Fairchild "All purpose" cabin monoplane.

National Advisory Committee for Aeronautics, October 14, 1927 (mimeographed), Washington, October 1927, pp. 7, ill.

- Aircraft Circulars No. 59. The Focke-Wulf F. 19 "Ente." Tail-first

airplane.

National Advisory Committee for Aeronautics, October 21, 1927 (mimeographed), Washington, October 1927, pp. 11, ill.

- Aircraft Circulars No. 60. Stinson commercial airplane—type S M-l.

A semicantilever monoplane.

National Advisory Committee for Aeronautics, October 28, 1927 (mimeographed), Washington, October 1927, pp. 7, ill.

- Aircraft Circulars No. 61. Lockheed "Vega" airplane. A commercial

cabin monoplane.

National Advisory Committee for Aeronautics, November 12,1927 (mimeographed), Washington, November 1927, pp. 11, ill.

- Aircraft Circulars No. 62. The Pitcairn "Mailwing" PA-5. A single

seat commercial biplane.

National Advisory Committee for Aeronautics, November 18, 1927 (mimeographed), Washington, November 1927, pp. 7, ill.

- Aircraft Circulars No. 63. "Avimeta" three-engine commercial monoplane, type A. V. M. 132.

National Advisory Committee for Aeronautics, December 16, 1927 (mimeographed), Washington, December 1927, pp. 5, ill.

- Aircraft Circulars No. 64. The Heinkel commercial airplane H. D. 40.

National Advisory Committee for Aeronautics, December 31, 1927 (mimeographed), Washington, December 1927, pp. 7, ill.

- Une année de technique aux États-Unis: le XIIe rapport de la N. A. C. A.

L'Aéronautique, (L'Aérotechnique, 5e année, No. 53), 9me année, No. 96 (mai 1927), Paris, pp. 146-147.

—— The joint conference of the aircraft industry and the National Advisory Committee for Aeronautics.

Aviation, Vol. 22, No. 23 (June 6, 1927), New York, pp. 1230, 1236, 1238.

- Report No. 249. A comparison of the take-off and landing characteristics

of a number of service airplanes, by Thomas Carroll.

National Advisory Committee for Aeronautics, February 3, 1927, Washington, Government Printing Office, 1927, pp. 12, ill., diagrs., tables.

- Report No. 250. Description of the N. A. C. A. universal test engine

and some test results, by Marsden Ware.

National Advisory Committee for Aeronautics, February 11, 1927, Washington, Government Printing Office, 1927, pp. 15, ill.

- Report No. 251. Approximations for column effect in airplane wing

spars, by Edward P. Warner and Mac Short.

National Advisory Committee for Aeronautics, April 6, 1927, Washington, Government Printing Office, 1927, pp. 20, diagrs.

National Advisory Committee for Aeronautics. Report No. 252. The direct measurement of engine power on an airplane in flight with a hub type dynamometer, by W. D. Gove and M. W. Green.

National Advisory Committee for Aeronautics, April 11, 1927, Washington, Government Printing Office, 1927, pp. 11, ill., diagrs.

- Report No. 253. Flow and drag formulas for simple quadrics, by A. F.

Zahm.

National Advisory Committee for Aeronautics, April 18, 1927, Washington, Government Printing Office, 1927, pp. 23, ill.

- Report No. 254. Distribution of pressure over model of the upper wing

and aileron of a Fokker D-VII airplane, by A. J. Fairbanks.

National Advisory Committee for Aeronautics, March 28, 1927, Washington, Government Printing Office, 1927, pp. 14, ill.

- Report No. 255. Pressure distribution over airofoils at high speeds,

by L. J. Briggs and H. L. Dry den.

National Advisory Committee for Aeronautics, March 2, 1927, Washington, Government Printing Office, 1927, pp. 42, ill., diagrs., tables.

- Report No. 256. The air forces on a systematic series of biplane and

triplane cellule models, by Max M. Munk.

National Advisory Committee for Aeronautics, April 25, 1927, Washington, Government Printing Office, 1927, pp. 37, ill., diagrs., tables.

- Report No. 257. Pressure distribution over a wing and tail rib of a

VE-7 and of a TS airplane in flight, by J. W. Crowley, jr.

National Advisory Committee for Aeronautics, May 9, 1927, Washington, Government Printing Office, 1927, pp. 37, ill., diagrs., tables.

"- Report No. 258. Some factors affecting the reproducibility of penetration

and the cut-off of oil sprays for fuel injection engines, by E. G. Beardsley. . National Advisory Committee for Aeronautics, May 2, 1927, Washington, Government Printing Office, 1927, pp. 10, ill., diagrs.

- Report No. 259. Characteristics of propeller sections tested in the

variable density wind tunnel, by Eastman N. Jacobs.

National Advisory Committee for Aeronautics, May 16, 1927, Washington, Government Printing Office, 1927, pp. 16, diagrs., tables.

- Report No. 260. The effect of a flap and ailerons on the N. A. C. A.-M6

airfoil section, by George J. Higgins and Eastman N. Jacobs.

National Advisory Committee for Aeronautics, May 23, 1927, Washington, Government Printing Office, 1927, pp. 18, ill., diagrs., tables.

- Report No. 261. Resistance and cooling power of various radiators,

by R. H. Smith.

National Advisory Committee for Aeronautics, June 6, 1927, Washington, Government Printing Office, 1927, pp. 16, ill., diagrs., tables.

- Report No. 262. Friction of aviation engines, by S. W. Sparrow and

M. A. Thorne.

National Advisory Committee for Aeronautics, August 1, 1927, Washington, Government Printing Office, 1927, pp. 27, ill., diagrs.

- Report No. 263. Preliminary flight tests of the N. A. C. A. Roots type

aircraft engine supercharger, by Arthur W. Gardiner and Elliott G. Reid.

National Advisory Committee for Aeronautics, August 3, 1927, Washington, Government Printing Office, 1927, pp. 13, ill., diagrs.

- Report No. 264. Differential pressures on a pitot-venturi and a pitot-

static nozzle over 360° pitch and yaw, by R. M. Bear.

National Advisory Committee for Aeronautics, July 18, 1927, Washington, Government Printing Office, 1927, pp. 9, ill., diagrs., tables.

6333—28-9

National Advisory Committee for Aeronautics. Report No. 265. A full-scale investigation of ground effect, by Elliott G. Reid.

National Advisory Committee for Aeronautics, May 31, 1927, Washington, Government Printing Office, 1927, pp. 7, ill.

- Report No. 266. Air force and moment for N-20 wing with certain cutouts, by R. H. Smith.

National Advisory Committee for Aeronautics, July 25, 1927, Washington, Government Printing Office, 1927, pp. 12, ills., diagrs., tables.

- Report No. 267. Drag of wings with end plates, by Paul E. Hemke.

National Advisory Committee for Aeronautics, August 15, 1927, Washington, Government Printing Office, 1927, pp. 13, ill., diagrs., tables.

- Report No. 268. Factors in the design of centrifugal type injection valve

for oil engines, by W. F. Joachim and E. G. Beardsley.

National Advisory Committee for Aeronautics, August 22, 1927, Washington, Government Printing Office, 1927, pp. 15, ill., diagrs., tables.

- Report No. 269. Air force tests of Sperry messenger model with six sets

of wings, by James M. Shoemaker.

National Advisory Committee for Aeronautics, September 20, 1927, Washington, Government Printing Office, 1927, pp. 20, ill., diagrs., tables.

- Report No. 270. The measurement of pressure through tubes in pressure

distribution tests, by Paul E. Hemke.

National Advisory Committee for Aeronautics, October 31, 1927, Washington, Government Printing Office, 1927, pp. 11, ill., diagrs.

- Report No. 271. Pressure distribution tests on PW-9 wing models showing effects of biplane interference, by A. J. Fairbanks.

National Advisory Committee for Aeronautics, October 11,1927, Washington, Government Printing Office, 1927, pp. 13, ill.

- Report No. 272. The relative performance obtained with several methods

of control of an overcompressed engine using gasoline, by Arthur W. Gardiner and William E. Whedon.

National Advisory Committee for Aeronautics, February 21,1928, Washington, Government Printing Office, 1927, pp. 13, ill., diagrs.

- Report No. 273. Wind tunnel tests on autorotation and the "Flat

Spin," by Montgomery Knight.

National Advisory Committee for Aeronautics, January 13, 1927, Washington, Government Printing Office, 1927, pp. 18, ill., diagrs., tables.

- Report No. 274. The N. A. C. A. photographic apparatus for studying

fuel sprays from oil engine injection valves and test results from several researches, by Edward G. Beardsley.

National Advisory Committee for Aeronautics, January 26, 1927, Washington, Government Printing Office, 1927, pp. 14, ill., diagrs.

- Report No. 275. The effect of the walls in closed type wind tunnels, by

George J. Higgins.

National Advisory Committee for Aeronautics, November 30, 1927, Washington, Government Printing Office, 1927, pp. 18, ill., diagrs., tables.

- Report No. 276. Combustion time in the engine cylinder and its effect

on engine performance, by Charles F. Marvin, jr.

National Advisory Committee for Aeronautics, November 10, 1927, Washington, Government Printing Office, 1927, pp. 16, ill., diagrs.

- Report No. 277. The comparative performance of an aviation engine at

normal and high inlet air temperatures, by Arthur W. Gardiner and Oscar W. Schey.

National Advisory Committee for Aeronautics, February 3,1928, Washington, Government Printing Office, 1927, pp. 19, diagrs.

National Advisory Committee for Aeronautics. Report No. 278. Lift, drag, and elevator hinge moments of Handley-Page control surfaces, by R. H. Smith.

National Advisory Committee for Aeronautics, December 21,1927, Washington, Government Printing Office, 1927, pp. 22, ill., diagrs., tables.

- Report No. 279. Tests on models of three British airplanes in the variable density wind tunnel, by George J. Higgins, W. S. Diehl, and George L. DeFoe.

National Advisory Committee for Aeronautics, March 6, 1928, Washington, Government Printing Office, 1928, pp. 27, ill., diagrs., tables.

- Report No. 280. The gaseous explosive reaction—the effect of inert gases,

by F. W. Stevens.

National Advisory Committee for Aeronautics, March 16, 1928, Washington, Government Printing Office, 1927, pp. 12, illus. diagrs., tables.

- Report No. 281. The effects of fuel and cylinder gas densities on the

characteristics of fuel sprays for oil engines, by W. F. Joachim and Edward G. Beardsley.

National Advisory Committee for Aeronautics, March 31, 1928, Washington, Government Printing Office, 1927, pp. 9, ill., diagrs.

- Revision of nomenclature for aeronautics. Adoption of standard atmosphere. Adoption of altimeter calibration standard. Standard method for determination of high-altitude performance. Standardization of wind tunnel results. Standardization of aeronautical symbols and abbreviations. American aeronautical safety code.

Department of Commerce, Standards Yearbook 1927, compiled by the National Bureau of Standards, Miscellaneous Publications No. 77, Washington, Government Printing Office, 1927, pp. 132-137.

- Technical Memorandums No. 393. Stall-proof airplanes, by G. Lachmann.

National Advisory Committee for Aeronautics, Jan. 4,1927 (mimeographed), Washington, January 1927, pp. 14, ill.

From Yearbook of the " Wissenschaftlichen Gesellscnaf- fur Luftfahrt," 1925 ("Berichte und Abhandlungen der W. G. L." May 1926.

—.— Technical Memorandums No. 394. Testing a windmill airplane ("Auto-giro"), by R. Seiferth.

National Advisory Committee for Aeronautics, Jan. 13, 1927 (mimeographed), Washington, January 1927, pp. 9, ill., tables. From " Zeitschrift fur Flugtechnik und Motorluftschiffahrt" November 27,1926.

- Technical Memorandums No. 395. Removing boundary layer by suction,

by J. Ackeret.

National Advisory Committee for Aeronautics, Jan. 21, 1927 (mimeographed), Washington, January 1927, pp. 23, ill. From "Zetischrift des Vereines deutscher Ingenieur" August 28, 1926.

- Technical Memorandums No. 396. Determining the efficiency of atomi-

zation by its fineness and uniformity, by J. Sauter.

National Advisory Committee for Aeronautics, Jan. 29, 1927 (mimeographed), Washington, January 1927, pp. 23, ill., tables. From " Forschungsarbeiten auf dem Gebiete des Ingenieurwesens" No. 279, 1926.

- Technical Memorandums No. 397. High-speed oil engines for vehicles,

by Ludwig Hausfelder. Part I Engines with external atomization of the fuel. Engines with internal atomization of the fuel. Hot-bulb engines. Diesel engines.

National Advisory Committee for Aeronautics, Feb. 11, 1927 (mimeographed), Washington, February 1927, pp. 32, ill. From "Der Motorwagen," August 31,1926.

National Advisory Committee for Aeronautics. Technical Memorandums No. 398. Researches on ailerons and especially on the test loads to which they should be subjected, by J. Sabatier.

.National Advisory Committee for Aeronautics, Feb. 17, 1927 (mimeographed), Washington^ February 1927, pp. 25, ill. From "La Technique Aéronautique" November 15, and December 15, 1926.

- Technical Memorandums No. 399. Duralumin welding, By Wm. Nelson.

National Advisory Committee for Aeronautics, Feb. 24,1927 (mimeographed), Washington, February 1927, pp. 11, ill. From "Aviation," January 17,1927.

- Technical Memorandums No. 400. On the mutual reaction of wings and

body, by J. Lennertz.

National Advisory Committee for Aeronautics, Feb. 28, 1927 (mimeographed), Washington, February 1927, pp. 6, ill. From "Zeitschrift fur Flugtechnik und Motôrluftschiffahrt " January 14, 1927.

- Technical Memorandums No. 401. The heat treatment of duralumin, by

Wm. Nelson.

National Advisory Committee for Aeronautics, Mar. 3, 1927 (mimeographed), Washington, March 1927, pp. 18, diagrs. ^

From "Aviation" February 21, 1927.

- Technical Memorandums No. 402. Permanent Commission of Aeronautical Studies. Report No. 4.

National Advisory Committee for Aeronautics, Mar. 10,1927 (mimeographed), Washington, March 1927, pp. 20.

Supplement to "Bulletin de la Chambre Syndicale des Industries Aéronautiques" September-December, 1926, Volume IV, Nos. 5-6.

j ' ■

- Technical Memorandums No. 403. High-speed oil engines for vehicles,

by Ludwig Hausfelder. Part II.

National Advisory Committee for Aeronautics, Mar. 17,1927 (mimeographed), Washington, March 1927, pp. 46, ill. From "Der Motorwagen" September 30, and December 10,1926.

- Technical Memorandums No. 404. The protection of duralumin from

corrosion, by Wm. Nelson.

National Advisory Committee for Aeronautics, Mar. 24, 1927 (mimeographed), Washington, March 1927, pp. 24, ill. From "Aviation," November 8,1926.

- Technical Memorandums No. 405. Structural details from 1926 Paris

Aero Salon, by W. Rethel.

National Advisory Committee for Aeronautics, Mar. 31,1927 (mimeographed), Washington, March 1927, pp. 12, ill. From "Zeitschrift fur Flugtechnik und Motorluftschiffahrt" February 14, 1927.

- Technical Memorandums No. 406. Flap gear for airplanes. A new

scheme in which variation is automatic, by A. Hessell Tiltman.

National Advisory Committee for Aeronautics, April 7, 1927 (mimeographed), Washington, April 1927, pp. 18, ill. From "The Automobile Engineer," February 1927.

- Technical Memorandums No. 407. Some impressions of the Paris Aero

Show, by J. D. North.

National Advisory Committee for Aeronautics, April 14,1927 (mimeographed), Washington, April 1927, pp. 15, ill. From " The Aircraft Engineer," Supplement to " Flight," December 30,1926.

- Technical Memorandums No. 408. Duralumin and its corrosion,

by Wm. Nelson.

National Advisory Committee for Aeronautics, April 21,1927 (mimeographed), Washington, April 1927, pp. 14, ill. From "Aviation" November 1,1926.

National Advisory Committee for Aeronautics. Technical Memorandums No. 409. Kinetographic determination of airplane flight characteristics, by P. Raethjen.

National Advisory Committee for Aeronautics, April 28,1927 (mimeographed), Washington, April 1927, pp. 46, ill., table. From "Zeitschrift fur Flugtechnik und Motorluftschiffahrt" December 14 and 28, 1926.

- Technical Memorandums No. 410. High-speed oil engines for vehicles,

by Ludwig Hausfelder. Part III.

National Advisory Committee for Aeronautics, May 5,1927 (mimeographed), Washington, May 1927, pp. 32, ill. From "Der Motorwagen" December 20 and 31, 1926, and January 10,1927.

- Technical Memorandums No. 411. Determining the velocity distribution in the boundary layer of an airfoil fitted with a rotary cylinder, by B. G. Van der Hegge Zijnen.

National Advisory Committee for Aeronautics, May 12,1927 (mimeographed), Washington, May 1927, pp. 15, ill., diagrs., tables.

Report A129 of the " Rijks-Studiedienst voor de Luchtvaart," Amsterdam. Reprint from "De Ingénieur," October 23, 1926.

- Technical Memorandums No. 412. Air cooling. An experimental

method of evaluating the cooling effect of air streams on air-cooled cylinders, by J. F. Alcock.

National Advisory Committee for Aeronautics, May 19, 1927 (mimeographed), Washington May 1927, pp. 18, ill. From "The Automobile Engineer," April, 1927.

- Technical Memorandums No. 413. Multiplicity of solutions in aerodynamics, by M. Dupont.

National Advisory Committee for Aeronautics, May 26, 1927 (mimeographed), Washington, May 1927, pp. 34, ill., diagrs. From "La Technique Aéronautique" December 15, 1926, and January 15, 1927.

- Technical Memorandums No. 414. Aerodynamic laboratory at Cuatro

Vientos, by Moreno Caracciolo.

National Advisory Committee for Aeronautics, June 2, 1927 (mimeographed), Washington, June 1927, pp. 13, ill.

From " Boletin Oficial," Royal Aero-Club of Spain, Second Quarter, April-June 1924 and *' L'Aéronautique," September 1926.

- Technical Memorandums No. 415. Climbing efficiency of aircraft, by

C. C. Walker.

National Advisory Committee for Aeronautics, June 9, 1927 (mimeographed), Washington, June 1927, pp. 9, ill. From "Flight," January 27, 1927.

- Technical Memorandums No. 416. Effect of streamline curvature on

lift of biplanes, by L. Prandtl.

National Advisory Committee for Aeronautics, June 16, 1927 (mimeographed), Washington, June 1927, pp. 11, ill. From Report III of the Gôttingen Aerodynamic Institute, 1927.

- Technical Memorandums No. 417. Drag measurements of two thin wing

sections at different index values, by J. Ackeret.

National Advisory Committee for Aeronautics, June 23, 1927 (mimeographed), Washington, June 1927, pp. 7, ill., diagrs., tables. From Report HI of the Gôttingen Aerodynamic Institute, 1927.

- Technical Memorandums No. 418. Investigation of a wing with an

auxiliary upper part, by R. Seiferth.

National Advisory Committee for Aeronautics, June 30, 1927 (mimeographed), Washington, June 1927, pp. 6, ill., diagrs., tables. From Report Ilfjof the Gôttingen Aerodynamic Institute, 1927.

National Advisory Committee for Aeronautics. Technical Memorandums No. 419. Experiments with three horizontal empennages,, by R. Seiferth. National Advisory Committee for Aeronautics, July 7, 1927 (mimeographed), Washington, July 1927, pp. 7, ill., tables. From Report III of the Göttingen Aerodynamic Institute, 1927.

- Technical Memorandums No. 420. Some notes on gasoline-engine development. A résumé of a paper by H. R. Ricardo.

National Advisory Committee for Aeronautics, July 14,1927 (mimeographed), Washington, July 1927, pp. 23, ill.

From "The Automobile Engineer," April 1927.

- Technical Memorandums No. 421. Aero dopes and varnishes, by H. T. S.

Britton. I

National Advisory Committee for Aeronautics, July 21, 1927 (mimeographed), Washington July 1927, pp. 20, diagrs., tables. From "The Industrial Chemist," March 1927.

- Technical Memorandums No. 422. Systematic investigation of Jou-

kowsky wing sections, by O. Schrenk.

National Advisory Committee for Aeronautics, July 28,1927 (mimeographed), Washington, July 1927, pp. 9, diagrs., table. From "Zeitschrift für Flugtechnik und Motorluftschiffahrt" May 28, 1927.

- Technical Memorandums No. 423. Lindbergh's flight, by August von

Parseval.

National Advisory Committee for Aeronautics, August 4,1927 (mimeographed), Washington, August 1927, pp. 9. From "Motorwagen" May 21, 1927.

- Technical Memorandums No. 424. Discussion of the results of the

boundary-layer tests of an airfoil fitted with rotary cylinder, by E. B. Wolff and C. Koning.

National Advisory Committee for Aeronautics, August 11, 1927 (mimeographed), Washington, August 1927, pp. 11, ill.

Report A130 of the "Rijks-Studiedienst voor de Luchtvaart," Amsterdam. Reprint from "De Ingenieur," December 25, 1926.

- Technical Memorandums No. 425. Recent suggestions in diesel-engine

construction, by F. Ernst Bielefeld.

National Advisory Committee for Aeronautics, August 18, 1927 (mimeographed) Washing -ton, August 1927, pp. 25, ill. From "Schiffbau," June 2, June 16, and July 7, 1926.

- Technical Memorandums No. 426. Seaplane floats and hulls, by H.

Herrmann. Part I.

National Advisory Committee for Aeronautics, August 26, 1927 (mimeographed), Washington, August 1927, pp. 29, ill., tables.

From "Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt" December 1926.

- Technical Memorandums No. 427. Seaplane floats and hulls, by H.

Herrmann, Part II.

National Advisory Committee for Aeronautics, September 1, 1927 (mimeographed), Washington, September 1927, pp. 27, ill.

From "Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt" December 1926.

- Technical Memorandums No. 428. Drag measurements on a Junkers

wing section. Application of the Betz method to the results of comparative tests made on a model and on an airplane in flight, by Hanns Weidinger.

National Advisory Committee for Aeronautics, September 8, 1927 (mimeographed), Washington, September 1927, pp. 47, ill., tables. ,

From "Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt" December 1926.

National Advisory Committee for Aeronautics. Technical Memorandums No. 429. Building a full-size glider, by F. J. Camm.

National Advisory Committee for Aeronautics, September 15,1927 (mimeographed), Washington, September 1927, pp. 11, ill. From "The Air League Bulletin" of the Air League of the British Empire, London.

- Technical Memorandums No. 430. Effects of roughness of airfoils, by

O. Schrenk.

National Advisory Committee for Aeronautics, September 22,1927 (mimeographed), Washington, September 1927, pp. 6, ill., diagrs., tables. From Report III "Ergebnisse der Aerodynamischen Versuchsanstalt zu Göttingen."

- Technical Memorandums No. 431. Experiments on airfoils with trailing

edge cut away, by J. Ackeret.

National Advisory Committee for Aeronautics, September 29,1927 (mimeographed), Washington, September 1927, pp. 9, ill., diagrs., tables. From Report III "Ergebnisse der Aerodynamischen Versuchsanstalt zu Göttingen.

- Technical Memorandums No. 432. Slotted-wing airplanes, by E. Ever-

ling.

National Advisory Committee for Aeronautics, October 6,1927 (mimeographed), Washington, October 1927, pp. 10, ill. From "Zeitschrift des Vereines deutscher Ingenieure" May 7,1927.

- Technical Memorandums No. 433. Some German gliders of 1920-1923,

by Alfried Gymnich.

National Advisory Committee for Aeronautics, October 13, 1927 (mimeographed), Washington, October 1927, pp. 20, ill. From "Der Gleit- und Segelflugzeugbau".

- Technical Memorandums No. 434. Glider construction and design, by

Alfried Gymnich.

National Advisory Committee for Aeronautics, October 20,1927 (mimeographed), Washington, October 1927, pp. 20, ill., tables. From "Der Gleit- und Segelflugzeugbau".

- Technical Memorandums No. 435. Turbulent flow, by L. Prandtl.

National Advisory Committee for Aeronautics, October 31, 1927 (mimeographed), Washington, October 1927, pp. 17, ill.

Lecture delivered before the International Congress for Applied Mechanics, Zurich, September 1926.

- Technical Memorandums No. 436. Approximation method for determining the static stability of a monoplane glider, by A. Lippisch.

National Advisory Committee for Aeronautics, November 3,1927 (mimeographed), Washington, November 1927, pp. 17, ill. From "Zeitschrift für Flugtechnik und Motorluftschiffahrt" June 14,1927.

- Technical Memorandums No. 437. Experiments on airfoils with aileron

and slot, by A. Betz.

National Advisory Committee for Aeronautics, November 10, 1927 (mimeographed), Washington, November 1927, pp. 6, ill., diagrs., tables. From Report III "Ergebnisse der Aerodynamischen Versuchsanstalt zu Göttingen".

- Technical Memorandums No. 438. Safety in airplane flight, by H.

Brunat.

National Advisory Committee for Aeronautics, November 17,1927 (mimeographed), Washington, November 1927, pp. 38.

- Technical Memorandums No. 439. Structural details of German gliders,

by Alfried Gymnich.

National Advisory Committee for Aeronautics, November 23,1927 (mimeographed), Washington, November 1927, pp. 32, ill. From "Der Gleit- und Segelflugzeugbau".

National Advisory Committee for Aeronautics. Technical Memorandums No. 440. Metal aircraft construction at Vickers. Some interesting new forms developed.

National Advisory Committee for Aeronautics, December 1, 1927 (mimeographed), Washington, December 1927, pp. 5, ill. From "Flight" September 15,1927.

--Technical Memorandums No. 441. Increasing lift by releasing compressed air on suction side of airfoil, by F. Seewald.

National Advisory Committee for Aeronautics, December 8, 1927 (mimeographed), Washington, December 1927, pp. 10, ill. From "Zeitschrift fur Flugtechnik und Motorluftschiffahrt," August 16, 1927.

- Technical Memorandums No. 442. "Gloster" high lift biplane wings, by

H. E. Preston

National Advisory Committee for Aeronautics, December 15, 1927 (mimeographed), Washington, December, 1927, pp. 5, ill. From " Gloster," January-February 1927.

- Technical Memorandums No. 443. Duralumin—defects and failures, by

Wm. Nelson

National Advisory Committee for Aeronautics, December 22,1927 (mimeographed), Washington, December 1927, pp. 13, ill. From "Aviation," August 29, 1927.

- Technical Memorandums No. 444. Calculating thrust distribution and

efficiency of air propellers, by Theodor Bienen.

National Advisory Committee for Aeronautics, December 30,1927 (mimeographed), Washington, December 1927, pp. 10, ill. From "Zeitschrift fur Flugtechnik und Motorluftschiffahrt," November 27,1926.

- Technical Notes No. 254. Method of correcting wind tunnel data for

omitted parts of airplane models, by R. H. Smith.

National Advisory Committee for Aeronautics, January 5, 1927 (mimeographed), Washington, January 1927, pp. 10, ill., tables.

- Technical Notes No. 255. Precision of wing sections and consequent

aerodynamic effects, by Frank Rizzo.

National Advisory Committee for Aeronautics, January 25, 1927 (mimeographed), Washington, January 1927, pp. 11, ill., diagrs., tables.

- Technical Notes No. 256. Wall interference in closed type wind tunnels,

by George J. Higgins.

National Advisory Committee for Aeronautics, March 16, 1927 (mimeographed), Washington, March 1927, pp. 6, diagrs.

- Technical Notes No. 257. Technical preparation of the airplane "Spirit

of St. Louis". Written for the National Advisory Committee for Aeronautics by Donald A. Hall, Chief Engineer, Ryan Airlines, Inc.

National Advisory Committee for Aeronautics, July 19, 1927 (mimeographed), Washington, July 1927, pp. 12, ill., diagrs.

- Technical Notes No. 258. A warning concerning the take-off with heavy

load, by Elliott G. Reid and Thomas Carroll.

National Advisory Committee for Aeronautics, July 26,1927 (mimeographed), Washington, July 1927, pp. 6, diagr.

■- Technical Notes No. 259. "Alclad" a new corrosion resistant aluminum

product, by E. H. Dix, jr.

National Advisory Committee for Aeronautics, August 2,1927 (mimeographed), Washington, August 1927, pp. 13, ill.

- Technical Notes No. 260. Study of open jet wind tunnel cones, by

Fred E. Weick.

National Advisory Committee for Aeronautics, August 9, 1927 (mimeographed), Washington, August 1927, pp. 15, ill., diagrs.

National Advisory Committee for Aeronautics. Technical Notes No. 261. Tension experiments on diaphragm metals, by H. B. Henrickson.

National Advisory Committee for Aeronautics, August 16,1927 (mimeographed), Washington, August 1927, pp. 14, ill., diagrs.

- Technical Notes No. 262. The installation and correction of compasses

in airplanes, by M. F. Schoeffel.

National Advisory Committee for Aeronautics, August 30, 1927 (mimeographed), Washington, August 1927, pp. 17, ill.

- Technical Notes No. 263. A load factor formula, by Roy G. Miller.

National Advisory Committee for Aeronautics, September 6, 1927 (mimeographed), Washington, August 1927, pp. 8, diagrs., tables.

- Technical Notes No. 264. Tests of the N. P. L. airship models in the

variable density wind tunnel, by George J. Higgins.

National Advisory Committee for Aeronautics, September 13, 1927 (mimeographed), Washington, September 1927, pp. 8, ill., diagrs., tables.

- Technical Notes No. 265. Measurements of the moments of inertia of

full scale airplanes, by M. W. Green.

National Advisory Committee for Aeronautics, September 23, 1927 (mimeographed), Washington, September 1927, pp. 13, ill.

- Technical Notes No. 266. Airfoil lift with changing angle of attack,

by Elliott G. Reid.

National Advisory Committee for Aeronautics, September 30, 1927 (mimeographed), Washington, September 1927, pp. 15, ill., diagrs.

- Technical Notes No. 267. Pressure distribution on wing ribs of the

VE-7 and TS airplane in flight, by R. V. Rhode.

National Advisory Committee for Aeronautics, October 11, 1927 (mimeographed), Washington, October 1927, pp. 4, ill., diagrs

- Technical Notes No. 268. Mass distribution and performance of free

flight models, by Max Scherberg and R. V. Rhode.

National Advisory Committee for Aeronautics, October 18, 1927 (mimeographed), Washington, October 1927, pp. 25, ill.

■- Technical Notes No. 269. The distribution of loads between the wings

of a biplane having decalage, by Richard M. Mock.

National Advisory Committee for Aeronautics, November 23, 1927 (mimeographed), Washington, November 1927, pp. 33, ill., diagrs., tables.

- Technical Notes No. 270. The characteristics of the N. A. C. A. 97,

Clark Y, and N. A. C. A.-M6 airfoils with particular reference to the angle of attack, by George J. Higgins.

National Advisory Committee for Aeronautics, December 13, 1927 (mimeographed), Washington, December 1927, pp. 4, ill., diagrs.

-"-"See Jacobs, Eastman N.: Work in the variable density wind tunnel of

the N. A. C. A.

- /See^Reid, Elliott G., en Thomas Carroll: Het starten van een zwaarbelast

vliegtuig.

National Aeronautic Association. The Sixth annual N. A. A. convention. Aviation, Vol. 23, No. 14 (Oct. 3, 1927), New York, pp. 817-818.

National Aeronautics Conference. See Bowen, R. Sidney, jr.: The Second National Aeronautics^Conference.

National Air Races. National air races and air derbies.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, pp. 210, 212, ill., map.

- The National Air Races. The event of the year.

Popular Aviation, Vol. 1, No. 4 (Nov. 1927), Chicago, pp. 7-10, ill.

- The 1927 American national air races.

Aeroplane, Vol. 33, No. 18 (Nov. 2,1927), London, pp. 614-618, ill.

- The 1927 National air races.

Aviation, Vol. 23, No. 15 (Oct. 10, 1927), New York, pp. 866-871, ill.

- Official results of the National Air Races.

Aviation, Vol. 23, No. 14 (Oct. 3, 1927), New York, pp. 814-816.

- Rules of the 1927 National air races.

Aviation, Vol. 22, No. 25 (June 20, 1927), New York, p. 1390.

National air tour. The 1927 national air tour.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, pp. 90-92, ill., map.

- Stinson wins third air tour.

Slipstream, Vol. 8, No. 8 (Aug. 1927), Dayton, Ohio, pp. 32, 36, ill.

- Twenty-seven planes expected to start in the 1927 National Air Tour.

Aviation, Vol. 22, No. 26 (June 27, 1927), New York, pp. 1444-1445, ill.

National Air Transport. N. A. T. planes flown over 700,000 miles during first year of operation.

Aviation, Vol. 23, No. 2 (July 11, 1927), New York, pp. 80-82,102, ill.

- N. A. T. takes over mail.

Popular Aviation, Vol. 1, No. 3 (Oct. 1927), Chicago, pp. 8-11, ill.

National balloon race. Van Orman wins national balloon race.

Aviation, Vol. 22, No. 24 (June 13, 1927), New York, pp. 1286-1287, ill.

- See Maxson, Herbut W.: The National Balloon Race.

National Geographic Society. See Coolidge, Calvin: Address of President Coolidge at the awarding to Col. Charles A. Lindbergh by the National Geographic Society of the Hubbard Medal.

Naudin, R. Annuaire de l'aéronautique 1927. Paris, L. Rouffé, éditeur.

Naval Air Station. New test section at the Naval Air Station in Anacostia. tj. S. Air Services, Vol. 12, No. 3 (Mar., 1927), Washington, D. C, pp. 31-32, ill.

Naval aviation. Progress in all fields of naval aviation reported. Admiral Moffett, Chief of the Bureau of Aeronautics, makes his annual report on naval aviation.

Aviation, Vol. 22, No. 1 (Jan. 3,1927), New York, pp. 26-28.

- See Pricolo, Franco: La nave portaerei e il problema aero-marittimo.

Navigation. Équipements de navigation.

L'Aéronautique, (L'Aérotechnique, 5e année, No. 57), 9me année, No. 100 (sept. 1927), Paris, pp. 279-286, ill.

- See Avigation.

- See Hosmer, E. A. : Navigating the ship of the air.

-• See Löwe, Karl F. : Navigation im Luftverkehr.

- See Silvester, Norman L.: The use of barometric charts in the navigation

of airships.

Naylor, W. C. Interferential resistance.

Aero Digest, Vol. 11, No. 6 (Dec. 1927), New York, p. 668.

- The Stinson cabin monoplane.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, pp. 180, 182, diagr.

Neely, Frank R. Army makes longest over-water flight. Maitland and Hegenberger win world acclaim by nonstop journey to Hawaii.

U. S. Air Services, Vol. 12, No. 8 (Aug. 1927), Washington, D. C, pp. 18-22, ill.

Neely, Frederick R. The Air Corps under General Patrick.

U. S. Air Services, Vol. 12, No. 6 (June 1927), Washington, D. C, pp. 42-47, ill.

- America's hope in Schneider Race.

U. S. Air Services, Vol. 12, No. 9 (Sept. 1927), Washington, D. C, pp. 17-18.

- Chicago to Golden Gate in heated cabins of Boeing planes.

U. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. C, pp. 12-14, ill.

- First civilian transcontinental air race.

U. S. Air Services, Vol. 12, No. 10 (Oct. 1927), Washington, D. C, pp. 18-19.

- First Pursuit group, using skis, makes great flight.

U. S. Air Services, Vol. 12, No. 3 (Mar. 1927), Washington, D. C, pp. 16-19, ill.

- General Fechet to succeed General Patrick.

U. S. Air Services, Vol. 12, No. 7 (July 1927), Washington, D. C, pp. 34-36, ill.

- The President presents Collier Trophy to Major Hoffman.

U. S. Air Services, Vol. 12, No. 3 (Mar. 1927), Washington, D. C, p. 23, ill.

- Two World records made by civil and Naval pilots.

U. S. Air Services, Vol. 12, No. 5 (May 1927), Washington, D. C, pp. 30-31, ill.

Neerlandia. See Cannegieter, H. G.: Ballonvaart "Neerlandia" 5 Augustus. Nelson, William. The anodic oxidation treatment of duralumin.

Aviation, Vol. 22, No. 24 (June 13, 1927), New York, pp. 1288-1289, 1315-1317, ill.

- Duralumin and its corrosion.

National Advisory Committee for Aeronautics, Technical Memorandums No. 408, Apr 1927, Washington, pp. 14, ill. From "Aviation" November 1, 1926.

- Duralumin-defects and failures.

Aviation, Vol. 23, No. 9 (Aug. 29, 1927), New York, pp. 476-478, ill.

National Advisory Committee for Aeronautics, Technical Memorandums, No. 443, Decern. ber 1927, Washington, pp. 13, ill. From "Aviation," August 29, 1927.

- Duralumin welding.

Aviation, Vol. 22, No. 3 (Jan. 17, 1927), New York, pp. 130-132, ill.

National Advisory Committee for Aeronautics, Technical Memorandums No. 399, February 1927, Washington, pp. 11, ill. [From "Aviation," January 17, 1927.]

- The heat treatment of duarlumin.

Aviation, Vol. 22, No. 8 (Feb. 21, 1927), New York, pp. 362-365, charts.

National Advisory Committee for Aeronautics, Technical Memorandums No. 401, March

1927, Washington, pp. 18, diagrs. [From "Aviation" February 21, 1927.]

- The protection of duralumin from corrosion.

National Advisory Committee for Aeronautics, Technical Memorandums No. 404, March 1927, Washington, pp. 24, ill. From "Aviation," November 8,1926.

Netherlands India. See Eist, F. v. d.: Burgerlijke luchtvaart in Neder-landsch-Indië.

New England. See Rochford, Daniel: The New England aviation exposition.

New York-Germany flight. The New York-Germany flight. Chamberlin and Levine establish world's nonstop distance record.

Slipstream, Vol. 8, No. 7 (July 1927), Dayton, Ohio, pp. 17-18, 33, ill.

New York-Paris. The New York-Paris flight projects. Many plan trans-Atlantic flight this summer.

Aviation, Voir ?2, No. 17 (Apr. 25, 1927), New York, pp. 823-825, ill.

New York-Paris. Preliminary plans of the New York-Paris flight. Slipstream, Vol. 8, No. 7 (July 1927), Dayton, Ohio, pp. 9-11, ill.

- Trans-Atlantic plane forced down 325 mi. from the Azores.

Aviation, Vol. 23, No. 17 (Oct. 24, 1927), New York, pp. 1008-1009, ill. Ruth Elder and George Haldeman.

New York University. The Air Corps unit at N. Y. University. Aviation, Vol. 22, No. 5 (Jan. 31,1927) New York, pp. 224-225, ill.

Nicaragua. Reconnoitering over Nicaragua.

Aviation, Vol. 23, No. 1 (July 4, 1927), New York, pp. 14-15, 28, ill.

Nicholl, Vincent. Death of Colonel Vincent Nocholl, D. S. O., D. S. C.

Flight, Vol. 19, No. 43 (Oct. 27, 1927), London, p. 753, ill.

- Vincent Nichol.

Aeroplane, Vol. 33, No. 17 (Oct. 26, 1927) London, pp. 576-578, ill. Biography.

Nieuport—Delage. Nieuport-Delage pursuit airplane 48 C-l.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 29, Washington, January 1927, pp. 6, ill.

Night flying. See Allen, Edmund T.: Flying through fog and night.

Niles, A. S., and N. R. Bailey. Study of pressure distribution data.

Air Corps Information Circular, Vol. 7, No. 604 (Nov. 1, 1927), Washington, pp. 34, diagrs., table.

1926. Jaarverslag der K. L. M. 1926.

Het Vliegveld, Ilde Jaarg., No. 7, 8 (Juli, Aug. 1927), Amsterdam, pp. 236-237, 270-272.

- 1926.

Flight, Vol. 19, No. 1 (Jan. 6,1927), London, pp. 1-2.

-- 1926 in retrospect.

Aviation, Vol. 22, No. 1 (Jan. 3, 1927) New York, p. 13.

- On progress in 1926.

Aeroplane, Vol. 32, Nos. 1-2 (Jan. 5-12, 1927), London, pp. 1-6, 29-32.

- See Besançon, Georges: L'année aéronautique 1926.

- See Deutschen Versuchsanstalt für Luftfahrt: Jahrbuch 1926 der Deutschen Versuchsanstalt für Luftfahrt.

- -See Pâramo y Roldân, Mario de: Balance aeronâutico mondial de 1926.

- See Reyneker, F. H.: De luchtvaart in 1926.

1927. 1927.

Flight, Vol. 19, No. 52 (Dec. 29, 1927), London, pp. 875-876.

- On problems for 1927.

Aeroplane, Vol. 32, Nos. 3-4 (Jan. 19-26,1927), London, pp. 57-60, 85-88.

- Pilots discuss rules for 1927 Reliability tour.

Aviation, Vol. 22, No. 21 (May 16, 1927), New York, p. 1030.

- Les records du monde d'aviation en 1927.

L'Aéronautique, 9me année, No. 99 (août 1927), Paris, pp. 242-247, ill., tables.

- See Aircraft Year Book: Aircraft year book 1927.

- See Annuario: Annuario ufnciale della r. aeronautica, 1927, Anno V.

- See Heemstede, I. L. van den Berch van : 1927.

- See Krupp, G.: Sachsenflug 1927.

- See Langsdorf!, Werner von: Taschenbuch der Luftflotten gegründet 1914,

Jahrgang 1927.

1927. See Naudin, R.: Annuaire de l'aeronauti que 1927.

—— See Van Muffling, Adrian: A victorious year of American aeronautics— 1927.

Nisikawa, Syódirò. See Wada, Koroku, and Syódirò Nisikawa; Measurement of variable velocity relative to air with pitot-static tube.

Nistri, A. Come ed in quali limiti nel fotocartografo Nistri viene utilizzata la profondità di campo degli obbiettivi.

L'Aerotecnica, Voi. 7 (Anno 5), N. 8 (Sett. 1927), Pisa, pp. 554-574, ill., diagrs.

Noack, W. G. See Offermann, E., W. G. Noack und A. R. Weyl: Riesenflugzeuge.

Nomenclature. See Avigation.

Norge. See F. K.: Van achter de coulissen der Noordpoolvaart met het luchtschip "Norge."

North, J. D. Aircraft performance.

Aircraft Engineer suppl. to Flight, Vol. 19, Nos. 4, 13, 21, 25 (Jan. 27, Mar. 31, May 26, June 23), London, pp. 46e-46f, 188a-188c, 330a-330d, 414a-414c, diagr.

- Some impressions of the Paris Aero Show.

National Advisory Committee for Aeronautics, Technical Memorandums No. 407, April 1927, Washington, pp. 15, ill. From "The Aircraft Engineer," Supplement to "Flight," December 30, 1926.

North Pole. If forced to land on polar ice, how could a flyer reach civilization?

Literary Digest, Vol. 92 (Apr. 9, 1927), New York, pp. 50-52.

- The Pole—an aerial piccadilly?

Aero Field, Vol.. 2, No. 1 (April 1927), Sutton Coldfield, England, pp. 6-8, ill.

- See F. K. : Van achter de coulissen der Noordpoolvaart met het luchtschip

"Norge".

- See Hydravion: Over den Luchtweg naar de Noordpool.

Norton Field. Facts about Norton Field, Columbus, Ohio.

Slipstream, Vol. 8, No. 9 (Sept. 1927), Dayton, Ohio, p. 27, ill.

Norwich. The aerial rally at Norwich.

Flight, Vol. 19, No. 9 (Mar. 3, 1927), London, pp. 112-115, ill.

Nottingham. The Nottingham flying meeting.

Flight, Vol. 19, No. 31 (Aug. 4,1927), London, pp. 543-548, ill.

No ville, G. See America: Les grands voyages aériens. Avec quatre hommes à bord, 1' "America" traverse l'Atlantique.

Numann, Sies. "Lucky Lindbergh off for Paris!" Zijn start op Roosevelt Field.

Het Vliegveld, Ilde Jaarg., No. 6 (Juni 1927), Amaterdam, pp. 184-186, ill.

Nungesser and Coli. The Paris-New York flight. Fate of Nungesser and Coli still a mystery.

Flight, Vol. 19, No. 19 (May 12, 1927), London, pp. 297, ill.

- Paris-New-York sans escale. La tentative de Nungesser et de Coli.

L'Aéronautique, 9me année, No. 97 (juin 1927), Paris, pp. 168-171, ill., ports.

- La tentative de Nungesser et Coli.

L'Aérophile, 35e année, Nos. 11-12 (ler-15 juin 1927), Paris, pp. 171-174, ill. ,

Nutt, Arthur. The'Curtiss V-1550 and GV-1550 engines.

Aviation, Vol. 22, No. 10 (Mar. 7, 1927), New York, pp. 465-469, ill., charts.

Nutt, Arthur, E. Woodward, R. G. Harris, and L. E. Caygill. Full scale and model measurements of lift and drag of Bristol Fighter with R. A. F. 30 wings.

Aeronautical Research Committee, Reports and Memoranda, No. 1052 (Ae. 237), Aug., 1926, London, 1927, pp. 6, tabls., diagr. [

o

Oakland. See Hegardt, G. B.: Oakland municipal airport.

Ober, Shatswell, and John R. Markham. Interference tests on DH4B model and propeller.

Air Corps Information Circular, Vol. 6, No. 582 (Feb. 1, 1927), Washington, pp. 7, diagrs., tables.

Ocean plying. Are ocean flights worth the price?

Pop. Mech., Vol. 48 (Dec. 1927), Chicago, pp. 885-889, ill. Literary Digest, Vol. 95 (Dec. 3, 1927), New York, pp. 23-24.

- Forty persons attempted long ocean flights.

U. S. Air Services, Vol. 12, No. 10 (Oct. 1927), Washington, D. C, pp. 58, 60.

- Lindbergh and air heads on ocean flights.

U. S. Air Services, Vol. 12, No. 10 (Oct. 1927), Washington, D. C, pp. 54, 56.

-» See Armstrong, E. R. : Seadromes and ocean flying.

- See Clephane, Douglas W. : Weather Bureau aid in ocean flying.

'- See MacCracken, William P., jr.: Should ocean flying be curbed?

- See Schubart, L. : Praktische Gesichtspunke für den Ozeanflugverkehr.

O'Connor, Sergeant. Brig. Gen. Benjamin D. Foulois.

Aviation, Vol. 23, No. 25 (Dec. 19, 1927), New York, p. 1406, ill.

Oepele, D. Deutsche Lastenflugzeuge.

Fördertechnik und Frachtverkehr, Bd. 19, Nr. 16, 17 (Aug. 5, 19, 1927), Wittenberg, pp. 277-281, 299-303, ill. ;

Offermann, E., W. G. Noack und A. R. Weyl. Riesenflugzeuge. Berlin, Richard Carl Schmidt & Co., 1927, pp. 520, ill. Handbuch der Flugzeugkunde Bd. 4.

Ohio. Data concerning Ohio air ports.

Slipstream, Vol. 8, No. 9 (Sept. 1927), Dayton, Ohio, pp. 38-42, ill., maps.

- Ohio leads nation in aviation.

Slipstream, Vol. 8, No. 9 (Sept. 1927), Dayton, Ohio, p. 45, ill.

Oil. Oil cooling.

Flight, Vol. 19, No. 4 (Jan. 27, 1927), London, p. 50.

- See Lindbergh, Charles Augustus: Oil used on trans-Atlantic flight.

Orian, François. Calcul d'un longeron d'aile.

L'Aéronautique, (L'Aérotechnique, 5e année, No. 55), 9me année, No. 98 (juil. 1927), Paris, pp. 223-225, 111.

Ornithopters. See Alayrac, A.: Étude théorique du vol par battements.

- See Walker, Gilbert T.: The flapping flight of birds. II.

Osborn, Earl D. Aviation west of the Rockies.

Aviation, Vol. 23, No. 2 (July 11, 1927), New York, pp. 92-100, ill.

- Chicago, the air transport center.

Aviation, Vol. 22, No. 23 (June 6, 1927), New York, p. 1219.

- St. Louis-Wichita and Denver air centers.

Aviation, Vol. 22, No. 25 (June 20, 1927), New York, pp. 1386-1388.

Osborn, Earl D. The western air express.

Aviation, Vol. 23, No. 9 (Aug. 29,1927), New York, pp. 474-475, ill.

Oswald, S. L. A consideration of the design of a light flying-boat.

Journ. Roy. Aer. Soc., Vol. 31, No. 200 (Aug. 1927), London, pp. 767-768.

Owen, R. Lindbergh's epoch making flight from New York to Paris.

Current History Magazine of N. Y. Times, Vol. 26 (July 1927), New York, pp. 506-512, ill., diagr., map.

Ower, E., and F. C. Johansen. The design of pitot-static tubes.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 985996, ill., diagr., tabls.

Ower, E. The measurement of air flow.

London, Chapman and Hall, Ltfd., 1927, pp. vii, 199.

Ozeroff, G. A. The Central Aero-Hydrodynamical Institute.

Transactions of the Central Aero-Hydro-Dynamical Institute, No. 30, U. S. S. R. Scientific-Technical Department of the Supreme Council of National Economy, No. 183, Moscow, 1927, pp. 98, ill.

p

Pacher, W. Das Kompensieren von Magnetkompassen in Flugzeugen. Die Luftwacht, Heft 11, Nov. 1927, Berlin, pp. 644-649, ill.

Pacific. 3,800 kilomètres sans escale au-dessus du Pacifique. L'Aéronautique, 9me année, No. 98 (juil. 1927), Paris, p. 208.

- See Atlantic: Les deux océans. L'Atlantic Le Pacifique.

- See Hawaii: Maitland and Hegenberger fly to Hawaii.

- See Maitland et Hegenberger: La navigation de Maitland et Hagenberger

dans le Pacifique.

- See Samuels, Frank E.: With the Pacific coast air derby.

Packages. Lancement des colis et fusées du bord d'avions en vol. L'Aéronautique, 9me année, No. 95 (avril 1927), pp. 107-108, ill.

Packard. The new Packard "X" engine.

Aviation, Vol. 23, No. 7 (Aug. 15, 1927), New York, pp. 358-360, ill.

- The Packard "X 2750" engine.

Flight, Vol. 19, No. 36 (Sept. 8, 1927), London, p. 630, ill.

- Packard "X" type aircraft engine is largest in world.

Automotive Industries, Vol. 57, No. 15 (Oct. 8,1927), New York, pp. 546-547.

Page, Victor Wilfred. Modern aircraft; basic principles, operation, application, construction, repair, maintenance; a complete, practical treatise outlining clearly the elements of aeronautical engineering with special reference to simplified explanations of the theory of flight, aerodynamics and basic principles underlying the action of balloons and airplanes of all types. A book for all students of aircraft.

New York, The Norman W. Henley Publishing Company, 1927, pp. xvi, 855, ill.

Pagon, William Watters. See Blakemore, Thomas Lloyd, and W. Watters Pagon: Pressure airships. Part I—Nonrigid airships, by Thos. L. Blakemore. Part II—Semirigid airships, by W. Watters Pagon.

Painleve, Paul. Les résistances d'un liquide au mouvement d'un solide. Journal de l'École Polytechnique, 2e série, 26 cahier, Paris, 1927, pp. 165-182.

Pan-American flight. The Army Air Corps pan-American flight.

Aero Digest, Vol. 10, No. 5 (May 1927), New York, pp. 372-373, 485, ill., map.

- The close of a great achievement.

Aviation, Vol. 22, No. 18 (May 2, 1927), New York, pp. 930, 932.

Pan-American flight. Home coming of Pan-American fliers. Greeted by-President Coolidge on arrival at Capitol.

Aviation, Vol. 22, No. 21 (May 16, 1927), New York, pp. 1039-1040, ill.

- The Pan-American flight.

Aeroplane, Vol. 32, No. 7 (Feb. 16, 1927), London, pp. 180-182, ill. Slipstream, Vol. 8, No. 1 (Jan. 1927), Dayton, Ohio, pp. 13-14, ill.

- The Pan-American "Good Will" flight.

Slipstream, Vol. 8, No. 7 (July 1927), Dayton, Ohio, pp. 27, 35, ill.

- Progress of the Pan-American flight.

Slipstream ,Vol. 8, No. 2 (Feb. 1927), Dayton, Ohio, p. 24, ill.

- Unlimited benefits will follow Pan-American flight.

U. S. Air Services, Vol. 12, No. 6 (June 1927), Washington, D. C, pp. 25-28, ill.

Panetti, M. Deduzione della polare dell'apparecchio dalla polare délia velatura principale.

L'Aerotecnica, Vol. 7 (Anno 5), N. 10 (Ott. 1927), Pisa, pp. 613-621, ill.

Panhard-Levassor. Panhard-Levasser sleeve-valve aero engines. Scient. Amer., Vol. 136 (May 1927), New York, p. 346, ill.

Parachutes. Navy testing American silk cloth for parachutes.

U. S. Air Services, Vol. 12, No. 5 (May 1927), Washington, D. C, p. 27.

- Nouveau parachute.

L'Aéronautique, 9me année, No. 96 (mai 1926), Paris, p. 160, ill.

- Parachutes in the service.

Aeroplane, Vol. 32, No. 16 (Apr. 20,1927), London, pp. 441a-441b.

- Russell parachute.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, p. 76, ill.

- Les sauvetages en parachute.

L'Aéronautique, 9me année, No. 97 (juin 1927), Paris, p. 196.

- Sauvetages par parachute aux États-Unis.

L'Aéronautique, 9me année, No. 102 (nov. 1927), Paris, p. 342, ill.

- Les sauvetages par parachute en France.

L'Aéronautique, 9me année, No. 102 (nov. 1927), Paris, pp. 340-342.

- See Ball, Guy: Parachutes.

- See Collier trophy : Collier trophy awarded for parachute development.

- See Galli-Briquet parachute: The Galli-Briquet postal parachute.

- See Hydravion: Het Heinicke valscherm.

- See Müller, Waldemar: Fallschirme für Luftfahrzeuge.

- See Russell, J. M.: The Russell parachute.

- See Soden, F. O. : Parachutes.

- See Stern, Kenneth D.: Aerial life savers.

Paramo y Roldan, Mario de. Balance aeronâutico mondial de 1926. Iberica, Ano 14, Nûm. 665 (12 feb. 1927), Barcelona, pp. 110-111.

Parkin, J. H. Research on channel and wall interference.

Journ. Roy. Aer. Soc, Vol. 31, No. 204 (Dec 1927), London, pp. 1110-1149, ill., tabjs..

Paris. French airmen reach Brazil. Buenos Aires.

Aviation, Vol. 23, No. 17 (Oct. 24, 1927), New York, p. 1011* Dieudonne Costes and Joseph Le Brix.

- The Paris aero show.

Aero Digest, Vol. 10, No. 2 (Feb. 1927), New York, pp. 138-140, ill*

Paris. See Bridgman, Leonard: Impressions of the Paris Show.

- See Engines: Les moteurs au Xe Salon de l'Aviation.

- See Gosslau, F.: Die Flugmotoren auf der 10. Pariser Luftfahrt-Ausstellung.

- See Gosslau, F.: Flugzeuge der zehnten Pariser Luftfahrt-Ausstellung.

- See North, J. D.: Some impressions of the Paris Aero Show.

- See Rethel, W.: Konstruktive Einzelheiten aus dem Pariser "Aero-Salon."

- See Rethel, W.: Structural details from 1926 Paris Aero Salon.

Parker, Willis. Conducting a flying school.

Aviation, Vol. 23, No. 19 (Nov. 7, 1927), New York, pp. 1105-1106, ill.

- The cost of successful national distribution.

Aviation, Vol. 23, No. 16 (Oct. 17, 1927), New York, pp. 942-943.

- Stock control in aircraft manufacturing.

Aviation, Vol. 23, No. 10 (Sept. 5, 1927), New York, pp. 531, 532, ill.

Parker, Willis H. Advertising and selling airplanes.

Aviation, Vol. 22, No. 26 (June 27, 1927), New York, pp. 1438-1439, ill.

Parkin, J. H. The new aerodynamic laboratory of the University of Toronto.

' Journal of the Engineering Institute of Canada, Vol. 10, No. 8 (Aug. 1927), Montreal, pp. 390-399, ill.

Parry, Thos. W., Jr. New mooring mast at Scott Field.

Aero Digest, Vo.. 10, No. 2 (Feb. 1927), New York, p. 130, ill.

Parseval, A. Ueber die heutige Luftschiffahrt.

Zeitschr. Ver. deutsch. Ing., Bd. 71, Nr. 1 (1. Jan. 1927), Berlin, pp. 20-22, ill.

Parseval, August von. Lindbergh's flight.

National Advisory Committee for Aeronautics, Technical Memorandums No. 423, August 1927, Washington, pp. 9. From "Motorwagen" May 21, 1927.

Parseval, H. C. A. von. Modern air-ships.

Engineering Progress, Vol. 8, No. 4 (April 1927), Berlin, pp. 109-111, ill.

Paton, C. R., and Carlton Kemper. Power output and air requirements of a two-stroke cycle engine for aeronautical, use.

Patrick, Mason M. Aviation's future in United States.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, pp. 41,110, ill.

- General Patrick retires.

Aviation, Vol. 23, No. 24 (Dec. 12, 1927), New York, pp. 1402-1403, ill.

- General Patrick warns of three dangers.

U. S. Air Services, Vol. 12, No. 9 (Sept. 1927), Washington, D. C, p. 46.

- Retirement of Air Corps chief.

Slipstream, Vol. 8, No. 12 (Dec. 1927), Dayton, Ohio, pp. 12-13, ill.

—'■— Wright Field—Pride of the Air Corps.

Slipstream, Vol. 8, No. 10 (Oct. 1927), Dayton, Ohio, pp. 18-20, 48, ill.

Paulin, René. Le phare à grande puissance du Mont-Valerien. L'Aéronautique, 9me année, No. 92 (jan. 1927), Paris, pp. 8-10, ill.

Peabody, S. E. Overland unlimited.

Independent, Vol. 119 (Oct. 22, 1927), Boston, pp. 398-400.

Pegasus. The Huff-Daland "Pegasus."

: Flight, Vol. 19, No. 5 (Feb. 3, 1927), London, pp. 57-58, ill., diagr.

Peking. See Knauss, Robert: Im Grossflugzeug nach Peking. 6333—28-10

Penny, R. E. Seaplane development.

Journ. Roy. Aer. Soc, Vol. 31, No. 201 (Sept. 1927), London, pp. 844-885, ill., tabls.

Performance. See Capon, R. S.: Performance testing and analysis.

Permanent Commission of Aeronautical Studies. Permanent Commission of Aeronautical Studies. Report No. 4.

National Advisory Committee for Aeronautics, Technical Memorandums No. 402, March 1927, Washington, pp. 20.

Supplement to "Bulletin de la Chambre Syndicale des Industries Aéronautiques" September-December, 1926, Volume IV, Nos. 5-6.

Perrin, Harold E. How to start a flying club.

Airways, Vol. 3, No. 9 (May 1927), London, pp. 3-4.

Perring, W. G. A. The theoretical pressure distribution around Joukowski aerofoils.

Aeronautical Research Committee, Reports and Memoranda No. 1106 (Ae. 283), May, 1927, London, 1927, pp. 13, tabls., diagr.

Perring, W. G. A., and G. P. Douglas. Wind tunnel experiments on the effect on the maximum lift of withdrawing and discharging air from the upper surface of an aerofoil.

Aeronautical Research Committee, Reports and Memoranda No. 1100 (Ae. 278), Apr., 1927, London, 1927, pp. 5, diagr.

Perring, W. G. A. See Douglas, G. P., and W. G. A. Perring: Wind tunnel tests with high tip speed airscrews. The characteristics of a bi-convex aerofoil at high speeds.

- See Douglas, G. P., and W. G. A. Perring: Wind tunnel tests with high

tip speed airscrews. The characteristics of the aerofoil section R. A. F. 31a at high speeds. ;

Personal equipment. See Equipment: Équipement du personnal.

Peru. See Verdy: L'aviation au Pérou.

Perucca, Alceste. Sul lavoro di deformazione dell'attuale sistema elastico dei carrelli d'aeroplano.

Rendiconti Technici della Direzione Generale del Genio Aeronautico, Anno 15, N. 2 (Giugno 1927), Roma, pp. 17-27, ill., diagrs.

Peter, Karl. Das künftige Flughafen-Verwaltungsgebäude in Hamburg. Die Luftwacht, Heft 7, Juli 1927, Berlin, pp. 412-413, ill.

Peyriller, Edouard. Le pittoresque et l'aviation.

L'Aérophile, 35e année, Nos. 9-10 (ler-15 mai 1927), Paris, p. 146.

- Pour sauver l'aéronautique.

L'Aérophile, 35e année, Nos. 15-16 (ler-15 août 1927), Paris, pp. 231-232.

- Sur deux équipages disparus.

L'Aérophile, 35e année, Nos. 11-12 (ler-15 juin 1927), Paris, pp. 175-176, ill.

Pfister, Edmund. Grundlagen der Fluglehre. Teil I, Luftkräfte.

Berlin-Charlottenburg 2, Verlag C. J. E. Volckmann Nachf. G. m. b. H., 1927, pp. 87, ill.

"Pheasant" biplane. The "Pheasant" three place biplane.

Aviation, Vol. 23, No. 12 (Sept. 19, 1927), New York, p. 670, ill.

Philately. Speculation in aero-philately.

Aero Field, Vol. 2, Nos. 1-2 (Apr.-May 1927), Sutton Coldfleld, England, pp. 9-12, 33-40.

Philippine Islands. See Burgess, Walter K.: Commercial aviation in the Philippine Islands.

Philippovich, A. von. See Rackvitz, E., und A. v. Philippovich : Uber Kühlergefrierschutzmittel.

PHOTo-elasticity. £eeTuzi, Z.: Anew material for the study of photo-elasticity.

Photogrammetry. See Boelcke, S. : Stato ed avvenire della fotogrammetria del terreno.

- See Ewald, Erich: Das Luftbildwesen auf der Ausstellung der Internationalen Gesellschaft für Photogrammetrie in Charlottenburg.

Photography. Aerial map making with electric camera. Pop. Mech., Vol. 47 (Apr. 1927), Chicago, p. 543, ill.

- Aerial photography aids highway improvement plans.

Aviation, Vol. 22, No. 18 (May 2, 1927), New York, p. 922.

- Airplane eyes used for map making.

Seien. Amer., Vol. 136 (Apr. 1927), New York, p. 256, ill.

- Daredevils who map the earth from the sky.

Literary Digest, Vol. 92 (Mar. 26, 1927), New York, pp. 62-87, ill.

- Equipments de pahtographie et cinematographic aériennes.

L'Aéronautique, (L'Aérotechnique, 5e année, No. 54), 9me année, No. 97 (juin 1927), Paris, pp. 176-182, ill.

- See Antilli, Cesare: La definizione dell'immagine nella fotografia aerea

e l'analisi del terreno.

- See Antilli, Cesare: Metodo d'analisi degli otturatori focali per fotografia

aerea.

- See Aviamotor: Die Flugseugkammer "Aviamotor. "

- See Beardsley, Edward G.: The N. A. C. A. photographie apparatus for

studying fuel sprays from oil engine injection valves and test results from several researches.

- See Erickson, H. A.: Aerial photography.

- See Fairchild: The Fairchild aerial camera type K8.

- See Fuller, E. W. : Aerial photography and surveying.

- See Hotine, M. : Simple methods of surveying from air photographs.

- See Ramsey, Logan C. : Aerial photography and its relation to hydrography.

- See Tymms, F., and C. Porri: Air ministry. Flying for air survey photography.

Pickens, W. H. Accelerating sentiment.

Saturday Evening Post, Vol. 200 (Oct. 29, Nov. 12, 26, 1927), Philadelphia, pp. 6-7, 26-27, 20-21, ill.

Pierson, R. K. The constructional engineering of aircraft.

London, 1925.

The Institution of Civil Engineers. Institution lecture to students. Session 1924-25.

Piloting. Navigation piloting.

Slipstream, Vol. 8, No. 10 (Oct. 1927), Dayton, Ohio, p. 9.

Pilots. How to become a pilot.

Flight, Vol. 19, No. 15 (Apr. 14, 1927), London, pp. 221-223, ill.

- See Gasnier du Fresne, P.: Les pilotes de réserve qui fréquentent les

centres d'entraînement ne sont pas suffisament encouragés par l'état.

- See La Roe, Arthur: Pilots' physical tests.

Pinedo, Francesco De: See De Pinedo, Francesco.

Pinna, Pietro. L'azione indipendente e l'azione ausiliaria dell'aeronautica. Rivista Aeronautica, Anno 3, N. 1 (Gen. 1927), Roma, pp. 3-15.

Pioneer. Le compas Pioneer. *

L'Aérophile, 35e année, Nos. 11-12 (ler-15 juin 1927), Paris, p. 168, ill.

- See Col vin, Charles H.: The Pioneer earth inductor compass.

- See Compass: Le compas a induction terrestre.

Pistolesi, Enrico. Calcolo della linea elastica dell'elica.

L'Aerotecnica, Voi. 7 (Anno 6), N. 10 (Ott. 1927), Pisa, pp. 639-656, ill.

- Contributo allo studio dell'elica in un vento laterale.

L'Aerotecnica, Voi. 7 (Anno 6), N. 10 (Ott. 1927), Pisa, pp. 622-638, ill.

- Lindberg, Bellanca, Chamberlain, De Pinedo.

L'Aerotecnica, Voi. 7, N. 6 (Giugno 1927)-(Anno 5), Pisa, pp. 319-323, ill.

- Il problema della "detonazione" nei motori a scoppio.

L'Aerotecnica, Voi. 7 (Anno 5), N. 8 (Agosto 1927), Pisa, pp. 459-470, diagrs.

7—— Un problema fondamentale per la teoria della eliche.

L'Aerotecnica, Voi. 7 (Anno 5), N. 6 (Giugno 1927), Pisa, pp. 327-350, ill.

■ ■ . See Teofilato, Pietro, and E. Pistoiesi: A proposito di alcuni teoremi sulla portanza.

Pitcairn. Pitcairn aircraft.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, p. 68, ili.

- The Pitcairn Fleetwing De Luxe.

Aviation, Vol. 22, No. 26 (June 27,1927), New York, pp. 1442-1443, ill.

- The Pitcairn Mailwing.

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, pp. 546, 548, ill., diagr. Aeroplane, Vol. 33, No. 23 (Dec. 7, 1927), London, p. 766, diagr. Aviation, Vol. 23, No. 10 (Sept. 5, 1927), New York, pp. 533-535, ill.

--The Pitcairn "Mailwing" PA-5. A single seat commercial biplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 62, Washington, November 1927, pp. 7, ill.

- See Rose, Donald F. : Pitcairn aircraft.

Pitts, N. F., Jr. What aerial mapping has done for Syracuse. American City, Vol. 37 (Sept. 1927), New York, pp. 354-356, ill.

Planoil, A. See Huguenard, E., A. Magnan et A. Planoil: Sur un principe nouveau permettant la réalisation d'appareils mesurant les conditions aérodynamiques du vol des avions.

Plauth, Carl. See Hackmack, H.: Carl Plauth.

Pneumatic boats. See Airships Incorporated: Le radeaux pneumatiques américains.

- See Mouette: Les embarcations pneumatiques "Les Mouettes".

Pogoski, J. L'avion d'un grand raid.

L'Aéronautique, 9me année, No. 94 (mars 1927), Paris, pp. 69-72, ill.

Poincaré, L. Les appareils utilisés pour les essais des moteurs d'aviation. L'Aéronautique, 9me année, No. 92 (jan. 1927), Paris, pp. 23-28 ill.

—!— Le démarrage des moteurs d'aviation.

Revue Industrielle, T. 57, No. 2217 (août 1927), Paris, pp. 373-380, ill.

Poland. Die Weltluftmâchte. 4. Kapitel. Polen als Luftmacht. Die Luftwacht, Heft 8, Aug. 1927, Berlin, pp. 425-434, 111.

Polar exploration. See Hall, R. Scott: Polar exploration and survey by air.

Polar sea. See Amundsen, Roald Engelbregt Gravning, and Lincoln Ellsworth: The first flight across the polar sea.

Pond, Bertram. Model airplane construction.

Popular Aviation, Vol. 1, No. 4 (Nov. 1927), Chicago, pp. 41-47, ill.

Pontoons. See Black, Archibald: Quantity production of Fairchild pontoons.

Poortman, C. De luchtpostverbinding met Indie.

Het Vliegveld, Ilde Jaarg., No. 10 (Oct. 1927), Amsterdam, pp. 356-357, ill.

Porri, C. See Tymms, F., and C. Porri: Air ministry. Flying for air survey photography.

Porro, Felice. Considerazioni sull'addestramento ed impiego delTaviazione terrestre da ricognizione.

Rivista Aeronautica, Anno 3, N. 8 (Agosto 1927), Roma, pp. 31-44.

Portland. Portland's (Oregon) airport.

Popular Aviation, Vol. 1, No. 3 (Oct. 1927), Chicago, pp. 38-39, ill.

Portugal. See Atlantic : Les grands raids trans-atlantiques.

Possner, Lothar. Das Ubersteigen der Normalhöhe eines Freiballons.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 15. Heft (16. Aug. 1927), München, pp. 353-357, ill, diagrs., tables.

Post, A. Columbus of the air.

North American Review, Vol. 224 (Sept. 1927), New York, pp. 353-364.

Post, G. B. Aspects of commercial aviation in the U. S. A.

Annals, American Academy Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 71-78, ill.

Postduif. See Hydravion: De terugkeer van de "Postduif". Potomac. Potomac flying service.

Popular Aviation, Vol. 1, No. 4 (Nov. 1927), Chicago, pp. 21-22, ill.

Poturzyn, Fischer von, und Joseph M. Jurinek. Jahrbuch für Luftverkehr 1926-27.

München, Verlag Richard Pflaum, [1927]

Prague. The Prague aero show.

Aeroplane, Vol. 32, No. 25 (June 22,1927), London, pp. 734-742, ill.

Flight, Vol. 19, Nos. 23, 24, 27 (June 9, 16, July 7, 1927), London, pp. 383-384, 392-394, 464465, ill.

- Le quatrième salon de Prague.

L'Aéronautique, 9me année, No. 98 (juil. 1927), Paris, pp. 210-213, ill.

- See Steiner, L., und R. Schulz: Internationale Flugzeugausstellung in

Prag 1927.

--See Tetens, H.: IV. Internationale Aeronautische Ausstellung Prag.

Pra-ndtl, Ludwig. Effect of streamline curvature on lift of biplanes.

National Advisory Committee for Aeronautics, Technical Memorandums No. 416, June 1927, Washington, pp. 11, ill. From Report III of the Gottingen Aerodynamic Institute, 1927.

-- Die Entstehung von Wirbeln in einer Flüssigkeit mit kleiner Reibung.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 21. Heft (14.. Nov. 1927), München, pp. 489-496, ill.

Prandtl, Ludwig, und A. Betz. Ergebnisse der Aerodynamischen Versuchsanstalt zu Göttingen (angegliedert dem Kaiser Wilhelm-Institut für Strömungsforschung). III. Lieferung.

München und Berlin, Druck und Verlag von R. Oldenbourg, 1927, pp. 166, ill., diagrs., tables.

Prandtl, Ludwig. The generation of vortices in fluids of small viscosity.

Journ. Roy. Aer. Soc, Vol. 31, No. 200 (Aug. 1927), London, pp. 720-741, ill., diagr.

- Increasing the lift of an aerofoil.

Nature, Vol. 120, No. 3032 (Dec. 10,1927), London, p. 856.

- Professor Prandtl's vortex theory.

Aeroplane, Vol. 32, No. 22 (June 1, 1927), London, pp. 652-656, ill.

- Turbulent flow.

National Advisory Committee for Aeronautics, Technical Memorandums No. 435, October 1927, Washington, pp. 17, ill.

Lecture delivered before the International Congress for Applied Mechanics, Zurich, Septem ber 1926.

Prandtl, Ludwig, und A. Betz. Vier Abhandlungen zur Hydrodynamik und Aerodynamik.

Berlin, Julius Springer, pp. 100.

Prandtl, Ludwig. Vorführung eines hydrodynamischen Films. Die Luftwacht, Heft 10, Okt. 1927, Berlin, p. 585.

- See Ahlborn: Die Ablösungs- oder Grenzachichttheorie Prandtls und die

Enstehung der Wirbel in der Wirklichkeit.

- See Bose, N. K., und L. Prandtl: Beiträge zur Aerodynamik des Doppeldeckers.

Pratt & Whitney. Pratt & Whitney Hornet engine successfully passes Navy fifty hour type test.

Aviation, Vol. 22, No. 18 (May 2, 1927), New York, pp. 897-899, ill.

Preston, H. E. "Gloster" high lift biplane wings.

National Advisory Committee for Aeronautics, Technical Memorandums No. 442, December 1927, Washington, pp. 5, ill. From "Gloster" January-February 1927.

Pricolo, Franco. La nave portaerei e il problema aeromarittimo.

Rivista Aeronautica, Anno 3, N. 3, 7 (Marzo, Luglio 1927), Roma, pp. 5-14, 44-58, maps.

Prince, C. Io victis: Nungesser, Coli.

Atlantic Monthly, Vol. 140 (Sept. 1927), Boston, p. 337.

Pritchard, J. Laurence. The book of the aeroplane. London, Longmans Green & Co., 1927, pp. 255, ill.

Prizes. See German American Prize: Deutscher Nord-Amerika-Preis.

- See Germany: Deutscher Dauer-und Strecken-Leistungs-Preis.

- See Wissenschaftlichen Gesellschaft für Luftfahrt: Verlängerung des Preisausschreibens der Wissenschaftlichen Gesellschaft für Luftfahrt E. V.

Production. How many commercial aircraft built in 1926? First figures to show production in U. S. of airplanes for commercial purposes. Aviation, Vol. 22, No. 5 (Jan. 31, 1927), New York, p. 217.

Progress. Progress in aviation.

St. Nicholas, Vol. 55 (Dec. 1927), New York, pp. 128-129.

- Some notes on the possibilities of progress in aviation.

Journal of the Institution of Aeronautical Engineers, Vol. 1, No. 4 (April 1927), London, pp. 5-29, ill.

Propellers. Balsa wood propeller for large planes.

Aviation, Vol. 22, No. 6 (Feb. 7,1927), New York, p. 271, ill.

- See Barnwell, F. S.: Some notes on the design of airscrews.

Propellers. See Bienen, Theodor: Calculating thrust distribution and efficiency of air propellers.

- See Blyth, J. D.: Airscrew characteristics and aeroplane performance.

- See Borck, Hermann: Die Auswertung der Luftschraubenprüfung am

Prüfstand.

- See Borck, Hermann: Luftschrauben für Höhenflugzeuge.

- See Caldwell, Frank W.: Comparison of flight tests of a number of wood

propellers with wind tunnel tests on a series of wood propeller models.

- See Caldwell, Frank W.: Section properties of a series of airfoils suitable

for propeller design.

- See Douglas, G. P., and L. P. Coombes: The measurement of torque

grading along an airscrew blade.

- See Fage, A.: An experimental study of the vibrations in the blades and

shaft of an airscrew.

- See Ferrari, C, e G. Gabrielli: Studio sull'elica autorotante.

- See Gabrielli, G.: Un metodo approssimato per l'adattamento dell'elica

posteriore di un sistema di due eliche in tandem.

-- See Glauert, H.: Aerofoil and airscrew theory.

- See Glauert, H.: The analysis of experimental results in the windmill brake

and vortex ring states of an airscrew.

- See Guglielmetti, A.: Studio sull' applicazione delle contro-eliche sugli

aerei.

- See Helmbold, H. B., und H. Lerbs: Modellversuche zur Nachprüfung der

Triebschrauben-Wirbeltheorie.

- See Hembold, H. B.: Eine Näherungslösung des Problems der wirtschaftlichen Luftschraube.

- See Jacobs, Eastman N.: Characteristics of propeller sections tested in

the variable density wind tunnel.

- See Lock, C. N. H., H. Bateman, and H. C. H. Townend: An extension

of the vortex theory of airscrews with applications to airscrews of small pitch, including experimental results.

- See Pistolesi, Enrico: Un problema fundamentale per la teoria della eliche.

- See Schrerfk, Martin: Zur Frage der Gewichtserleichterung von Luftschrauben.

- See Steinitz, Otto: Die Fertigung von Rohblöcken für den Luftschraubenbau.

Protection. Protecting planes from the elements.

TL S. Air Services, Vol. 12, No. 8 (Aug. 1927), Washington, D. C, p. 44.

Prudden. The Prudden all-metal monoplane.

Aero Digest, Vol. 11, No. 6 (Dec. 1927), New York, p. 700, ill.

- New Prudden plane tested.

Aviation, Vol. 23, No. 22 (Nov. 28, 1927), New York, pp. 1294-1296, ill.

Public. Public imagination the key to the development of popular aviation.

Aero Field, Vol. 2, Nos. 2-3 (May-June, 1927), Sutton Coldfield, England, pp. 30-33, 55-56.

R

R. 100. The first of our new airships.

Aeroplane, Vol. 33, No. 21 (Nov. 23, 1927), London, pp. 694, 696, ill.

Rackwitz. Kraftstoffe für Flugmotoren und deren Beurteilung. Die Luftwacht, Heft 10, Okt. 1927, Berlin, pp. 585-586.

Rackwitz, E., und A. von Philippovich. Uber Kühlergefrierschutzmittel.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 21. Heft (14. Nov. 1927), München, pp. 496497, ill.

Radiation. See Rackwitz, E., und A. Von Philippovich: Uber Kühlergefrierschutzmittel.

Radiators. Air resistance of two aeroplane radiators.

Verslagen en Verhandelingen van den Rijks-Studiedienst voor de Luchtvaart, Rapport A 98, Deel 4-1927, Amsterdam, pp. 37-45, ill., diagr., tables.

- See Smith, R. H.: Resistance and cooling power of various radiators.

Radio. What's the trouble with aircraft radio?

Radio Broadcast, Vol. 12 (Nov. 1927), Garden City, pp. 10-13, ill.

-• See Dellinger, J. H.: Application of radio in air navigation.

- See Guibert: La T. S. F. et la navigation aérienne.

- See Hyland, Lawrence A.: Radio and air commerce.

- See Jacques, P.: La radiogoniométrie et la navigation.

- See T. S. F. : Équipements de T. S. F.

Radio beacons. Radio beacons.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, p. 58.

- See Boone, Andrew R. : Radio beacons to guide Hawaiian fliers.

- See Bouman, L. F. : Radio-bakens voor luchtvaart.

- See Murphy, Wm. H.: The interlocking equisignal radio beacon.

- See Winters, S. R.: Guiding airplanes by radio beacons.

Radiogonometer. See T. S. F.: Equipements de T. S. F.

Raethjen, P. Kinetographic determination of airplane flight characteristics.

National Advisory Committee for Aeronautics, Technical Memorandums No. 409, April 1927, Washington, pp. 46, ill., table. From "Zeitschrift für Flugtechnik und Motorluftschiffahrt'' December 14 and 28, 1926.

Raffaelli, Italo. Sicurezza dei motori d'aviazione.

Rivista Aeronautica, Anno 3, N. 1 (Gen. 1927), Roma, pp. 27-32. %

Rague, Paul. Enquete technique sur l'aviation commerciale. Le rôle des chambres de commerce dans le développement de l'avaition.

La Technique Aéronautique, 18e année, n. s., No. 74 (15 déc. 1927), Paris, pp. 318-321.

Ramsey, Logan C. Aerial photography and its relation to hydrography. Aviation, Vol. 23, No. 24 (Dec. 12, 1927), New York, pp. 1396-1399, ill.

Ramsey, Logan C., and Earle H. Kincaid. Analysis of weather conditions on recent transatlantic flights.

Aero Digest, Vol. 11, No. 4 (Oct. 1927), New York, pp. 402-405, maps.

Rasche, T., and C. Seeds. I want to fly to Europe.

Pictorial Review, Vol. 29 (Octf, 1927), New York, p. 4.

Rasor, W. W. Scadta: Sociedad Colombo-Alemana de transportes aereos.

Pan American Magazine, Vol. 40 (Oct. 1927), Panama City, Panama, pp. 102-107, ill., map.

Râteau, Auguste. See Breguet, Louis: Sur les grands raids sans escale et le record de distance en avion.

Read, Albert C. See History: Famous flights. The NC-4 trip.

Reboul. L'aviation allemande.

L'Aérophile, 35e année, Nos. 21-24 (ler-15 nov., ler-15 déc. 1927), Paris, pp. 322-328, 355-360, ill., map.

Rechtlich, A., und M. Schrenk. Das Schweissen im Flugzeugbau. Eine graudsätzliche Betrachtung.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 2. Heft (28. Jan. 1927), München, pp. 41-47, ill.

Rechtlich, A. Zerreissversuche mit geschweissten Stahlrohrstäben verschiedener Verbindungsart.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 17. Heft (14. Sept. 1927), München, pp. 393-399, ill.

Records. -Ballanca monoplane sets world endurance record. Pilots Chamberlin and Acosta hold Whirlwind engined plane in flight for over 51 hr. breaking previous record by wide margin.

Aviation, Vol. 22, No. 17 (Apr. 25, 1927), New York, pp. 819-821, ill.

- Un ballon porte le record du monde d'altitude à 12944 mètres.

L'Aéronautique, 9me année, No. 98 (juil. 1927), Paris, p. 214.

- Fifty-one hours in the air:

Aero Digest, Vol. 10, No. 5 (May 1927), New York, pp. 370-371, ill.

- German airmen establish a new world's endurance flight record. Edzard

and Risticz keep Junkers J-33-L plane in air for 52 hr. 53 min. 11 sec.

Aviation, Vol-23, No. 8 (Aug. 22, 1927), New York, p. 418.

-- A Hawker-Horsley aeroplane.

Illustrated London News, Vol. 170, No. 4593 (April 30, 1927), London, p. 769, ill.

- Het nieuwe duurrecord.

Het Vliegveld, Ilde Jaarg., No. 5 (Mei 1927), Amsterdam, pp. 160-161, ill.

- Official world air records.

Aero Digest, Vol. 10, No. 1 (Jan. 1927), New York, p. 56.

- Official world and American air records.

Aviation, Vol. 23, No. 16 (Oct. 17, 1927), New York, pp. 947-949, 952.

- Recent American and world air records.

Aviation, Vol. 22, No. 22 (May 30, 1927), New York, p. 1123.

- Vought "Corsair" and Wright "Apache" capture four world records for

U. S. Navy.

U. S. Air Services, Vol. 12, No. 6 (June 1927), Washington, D. 0., p. 50.

- Vought Corsair sets altitude record.

Aviation, Vol. 22, No. 17 (Apr. 25, 1927), New York, p. 822, ill.

- World's records in aviation.

Flight, Vol. 19, No. 6 (Feb. 10, 1927), London, p. 71.

- See Altitude: Le record d'altitude en hydravion est porté à 9,300 mètres

- See Connell, Byron J.: Lieutenant Connell sets four new records.

- See Connell, Byron J. : Navy pilot sets twelve new records.

- See Duration: Le record de durée en avion est porté à 51 heures.

- See 1927: Les records du monde d'aviation en 1927.

- See Reyneker, F. H.: Over duur- en afstandrecords.

Reid, Elliott G. Airfoil lift with changing angle of attack.

National Advisory Committee for Aeronautics, Technical Notes No. 266, Washington, September 1927, pp. 15, ill., diagrs.

Reid, Elliott G. A full-scale investigation of ground effect.

National Advisory Committee for Aeronautics, Report No. 265, May 31, 1927, Washington, Government Printing Office, 1927, pp. 7, ill.

Reid, Elliott G., en Thomas Carroll. Het starten van een zwaarbelast vliegtuig.

Het Vliegveld, Ilde Jaarg., No. 12 (Dec. 1927), Amsterdam, pp. 406-407, diagrs.

- A warning concerning the take-off with heavy load.

National Advisory Committee for Aeronautics, Technical Notes No. 258, Washington, July 1927, pp. 6, diagrs.

Reid, Elliott G. See Gardiner, Arthur W., and Elliott G. Reid: Preliminary flight tests of the N. A. C. A. Roots type aircraft engine supercharger.

Reid, Whitehead. Dr. Whitehead Reid. The first post-war private owner.

Flight, Vol. 19, No. 24 (June 16, 1927), London, pp. 397-399, ill.

Reijneker, F. H. Daniel Guggenheim safe-aircraft competition.

Het Vliegveld, Ilde Jaarg., No. 7 (Juli 1927), Amsterdam, pp. 226-229.

Reilly, F. M. T. Fineness.

Aircraft Engineer, suppl. to Flight, Vol. 19, No. 8 (Feb. 24,1927), London, pp. lOOc-lOOe.

Reine, Marcel. See Blanchet, Georges: Aviateurs contemporains. Quelques pilotes de la ligne Latécoére : Casablanca-Dakar.

Reissner, H. Neuere Probleme aus der Flugzeugstatik. Vorträge, gehalten an der Technischen Hochschule Charlottenburg 1925-1926.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 7. Heft (14. April 1927), München, pp. 153158, m.

(Fortsetzung von Seite 393, Heft 18, 1826.)

Relf, E. F. A Comparison of model and full scale performance of the Bristol Fighter using Flight Lieut. Capon's method of presentation.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 459461, diagr.

Relf, E. F., and L. F. G. Simmons. A distant-reading instrument for the measurement of small displacements.

Aeronautical Research Committee, Reports and Memoranda, No. 1092 (Ae. 271), Apr., 1927, London, 1927, pp. 4, diagr.

Relf, E. F., and T. Lavender. Experiments on the flow behind a rotating cylinder in the water channel.

Techn. Rept. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 74-75, ill.

Relf, E. F. Measurement of the rotary derivative Mq on the J^tli scale model Bristol Fighter in the Duplex wind tunnel.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp 394-408, diagr., tabls.

Renvoisé. Le port aérien du Bourget et les grands énénements dont il a été le théâtre en 1927. Comparaison des trois grands ports aériens Le Bourget, Croydon, Tempelhof.

La Technique Aéronautique, 18e année, n. s. No. 73 (15 nov. 1927), Paris, pp. 282-306, ill.

Research. See Guggenheim Research Committee : Guggenheim Research Committee formed.

- See Wimperis, H. E.: Progress in aeronautical research in Great Britain-

Resistance. See Painlevé, Paul: Les résistances d'un liquide au mouvement d'un solide.

Rethel, W. Konstruktive Einzelheiten aus dem Pariser "Aero-Salon".

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 3. Heft (14. Feb. 1927), München, pp. 53-57, ill.

Rethel, W. Structural details from 1926 Paris Aero Salon.

National Advisory Committee for Aeronautics, Technical Memorandums No. 405, March 1927, Washington, pp. 12, ill. From*'Zeitschrift für Flugtechnik und Motorluftschifl'ahrt" February 14, 1927.

Reyneker, F. H. De invloed van een uitstekend benzine-reservoir op de eigen-schappen von een vleugel.

Het Vliegveld, Ilde Jaarg., No. 2 (Feb. 1927), Amsterdam, pp. 59-60, diagr.

- De luchtvaart in 1926.

Het Vliegveld, Ilde Jaarg., No. 1 (Jan. 1927), Amsterdam, pp. 7-9, ill.

- De motor, die Lindbergh en Chamberlin over den Oceaan bracht: De

Wright "Whirlwind."

Het Vliegveld, Ilde Jaarg., No. 6 (Juni 1927), Amsterdam, pp. 187-188, ill.

- Over duur- en afstandrecords.

Het Vliegveld, Ilde Jaarg., No. 5 (Mei 1927), Amsterdam, pp. 150-153, diagrs.

Rhode, R. V. Pressure distribution on wing ribs of the VE-7 and TS airplane in flight.

National Advisory Committee for Aeronautics, Technical Notes I\o. 267, Washington, October 1927, pp. 4, ill, diagrs.

- See Scherberg, Max, and R. V. Rhode: Mass distribution and performance of free flight models.

Rhodes, John. An aerial holiday. Touring the Continent with a passenger at a cost of 2J4d. a mile.

Airways, Vol. 3, Imo. 12 (Aug. 1927), London, pp. 392, 395, ill.

Rhön. See Georgii, Walter: Ergebnisse des Rhön-Segelflug-Wettbewerbes 1927.

- See Hüber, W.: Die Ergebnisse der Technischen Prüfung neuartiger

Flugzeuge und Flugzeugmodelle während des Rhön-Segelflug-Wettbewerbes 1927.

- See Lippisch, A.: Technischer Bericht über die zum Rhön-Segelflug-Wettbewerb 1927 erschienenen Flugzeuge.

Ribs. See Biezeno, C. B., J. J. Koch, en C. Koning: The influence of the ribs on the strength of the main plane spars.

Ricardo, H. R. Some notes on gasoline-engine development. A résumé of a paper by H. R. Ricardo.

National Advisory Committee for Aeronautics, Technical Memorandums No. 420, July 14,1927, Washington, pp. 23, ill. From "The Automobile Engineer," April 1927.

Richard. Richard-Penhoet commercial seaplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 35, Washington, March 1927, pp. 14, ill.

From "Bulletin de la Chambre Syndicale des Industries Aéronautiques" September-December 1926.

- Richard-Penhoet flying boat.

Aero Digest, Vol. 10, No. 4 (Apr. 1927), New York, pp. 296-297, ill., diagr.

Richardson, E. G. Recent model experiments in aerodynamics.

Journ. Roy. Aer. Soc, Vol. 31, No. 201 (Sept. 1927), London, pp. 810-843, ill., tabls.

Richardson, H. C. Modern aircraft structural materials.

Slipstream, Vol. 8, No. 11 (Nov. 1927), Dayton, Ohio, pp. 15-16.

Richardson, J. F. First in the air.

Sunset, Vol. 59 (Dec. 1927), San Francisco, pp. 12-13.

Richardson, L. B. Modern naval aircraft.

Journ. Soc. Automotive Engineers, Vol. 21, No. 3 (Sept. 1927), New York, pp. 245-249, ill.

Richardson, L. G. By air to Malta.

Flight, Vol. 19, No. 38 (Sept. 22, 1927), London, pp. 670-672, map.

Richardson, M. K. Star-dust.

Literary Digest, Vol. 93 (June 4, 1927), New York, p. 33.

Richmond, V. C. Full scale pressure plotting experiments on hull and fins of H. M. A. R. 33.

Aeronautical Research Committee, Reports and Memoranda, No. 1044 (Ae. 231) Apr., 1926, London, 1927, pp. 26, tabls., diagr.

Richthofen, Baron. Last flight of Baron Richthofen.

Review of Reviews, Vol. 76 (Dec. 1927), New York, pp. 643-644.

Ridderzaal. De bijeenkomst in de Ridderzaal op 26 Maart 1927.

Het Vliegveld, Ilde Jaarg., No. 4 (April 1927), Amsterdam, pp. 50-65, ill.

Riiser-Larsen, H. See Amundsen, Roald Engelbregt Gravning, and Lincoln Ellsworth: The fiirst flight across the polar sea.—The navigation over the polar sea, by H. Riiser-Larsen.

Risks. On flying risks.

Aeroplane, Vol. 33, No. 11 (Sept. 14,1927), London, pp. 365-368.

Risticz. See Edzard et Risticz: L'Allemagne reprend les records du monde de durée et de distance en circuit.

Ritscher, Alfred. Terrestrische Vorbereitung für den Luther-Flug an der Ostküste Südamerikas.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 8. Heft (28. April 1927), München, pp. 181-187.

Riveting. Du rivetage dans la construction métallique des avions.

L'Aéronautique, (L'Aérotechnique 5e année, No. 57), 9me année, No. 100 (sept. 1927), Paris, pp. 287-288, M.

- See Iesman, J. W.: A new rivet for aircraft construction.

Rizzo, Frank. Precision of wing sections and consequent aerodynamic effects.

National Advisory Committee for Aeronautics, Technical Notes No. 255, Washington, January 1927, pp. 11, ill., diagrs., tables.

Robbe. See Witte, M. H.: De metalen Rohrbach vliegtuigen de vliegboot "Robbe".

Robertson, E. Arnot. Looking down on Europe. Each country has its national characteristics when viewed from the air. Airways, Vol. 3, No. 7 (Mar. 1927), London, p. 224.

Robertson, F. A. de V. Air defence maneuvers.

Flight, Vol. 19, No. 30 (July 28, 1927), London, pp. 526-527, 530.

- Air defences of the Empire.

Flight, Vol. 19, No. 10 (Mar. 10,1927), London, pp. 130-135, ill., map.

- Air survey in Chittagong.

Flight, Vol. 19, No. 6 (Feb. 10,1927), London, p. 69.

"Rocco." The Rohrbach "Rocco" flying-boat.

Flight, Vol. 19, No. 19 (May 12, 1927), London, pp. 287-289, ill., diagr.

Roche, J. A. Study of balanced rudders.

Air Corps Information Circular, Vol. 6, No. 586 (May 21, 1927), Washington, pp. 4, diagr

Rochford, Daniel. America's answer to England's light-plane clubs. Aviation, Vol. 22, No. 15 (Apr. 11,1927), New York, pp. 717-718.

- The New England aviation exposition.

Aviation, Vol. 23, No. 15 (Oct. 10, 1927), New York, pp. 872-873, ill.

- State and Federal rights. Massachusetts tests right to refuse to recognize

a federal piloting license within its boundaries.

Aviation, Vol. 23, No. 26 (Dec. 26,1927) New York, pp. 1516-1517, ill.

Rockets. See Lademann, R. : Zum .Raketenproblem.

- See Packages: Lancement des colis et fusées du bord d'avions en vol.

Rockies. See Osborn, Earl D. : Aviation west of the Rockies.

Roe, A. La. Two sciences, medical and aeronautical.

Annals, American Acadmey Political & Social Science, Vol. 131 (May 1927), Philadelphia, pp. 124-129.

Roe, A. V. Flying faster than sound.

Airways, Vol. 3, No. 9 (May 1927), London, p. 278, ill.

Röder, Hermann. Flugzeug-Navigation und Luftverkehr. Dresden, Verlag Otto Hermann Hörisch, 1927, pp. 232, ill.

Rogers, Will. Flying at Clover Field.

Aero Digest, Vol. 10, No. 2 (Feb. 1927), New York, pp. 89, 152, ill.

Rohrbach. The new Rohrbach Rocco flying-boat.

Aviation, Vol. 22, No. 25 (June 20, 1927), New York, pp. 1272-1374, ill.

- Rohrbach metal aircraft construction.

Aviation, Vol. 22, No. 11 (Mar. 14,1927), New York, pp. 519-522, ill.

- The Rohrbach "Robbe" RO VII seaplane (Military or commercial).

National Advisory Committee for Aeronautics, Aircraft Circulars No. 36, Washington, pp. 6, ill.

- The Rohrbach "Rocco" seaplane. New German commercial seaplane

with two Rolls-Royce "Condor" engines.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 44, Washington, June 1927, pp. 9, ill.

- "Rohrbach-Roland," German commercial plane, achieves five world

records.

U. S. Air Service, Vol. 12, No. 5 (May, 1927), Washington, D. C, pp. 43-44, ill.

- Travaux et programme de Rohrbach.

L'Aéronautique, 9me année, No. 101 (oct. 1927), Paris, pp. 326-327, ill.

- Das Verkehrs-Flugboot "Rohrbach-Rocco".

Luftfahrt, 31. Jahrg., Nr. 7, 8 (April 7, 22,1927), Berlin, pp. 105-106,118-120, ill.

- See Witte, H.: Das neue Rohrbach-Verkehrs-Flugboot "Rocco".

Rohrbach, A. Economical production of all-metal airplanes and seaplanes.

Journ. Soc. Automotive Engineers, Vol. 20, No. 1, 3 (Jan. Mar. 1927), New York, pp. 57-66, 366-368, ill.

Rolls-Royce. The latest British aero-engine. F.10.

Aeroplane, Vol. 32, No. 25 (June 22, 1927), London, pp. 731-732, ill.

- A new Rolls-Royce aero engine. The F.10 has many new features.

Flight, Vol. 19, No. 25 (June 23, 1927), London, pp. 411-412, ill.

- See Condor: The Rolls-Royce Condor IV.

Roots. See Gardiner, Arthur W., and Elliott G. Reid: Preliminary flight tests of the N. A. C. A. Roots type aircraft engine supercharger.

Rose, Donald F. Pitcairn aircraft.

Aero Digest, Vol. 10, No. 3 (Mar. 1927), New York, pp. 176-177, ill.

Rosendahl, Charles E. The present airship situation in the U. S. Aviation, Vol. 22, No. 7 (Feb. 14,1927), New York, p. 323.

- Reflections on the airship situation.

Proc. U. S. Nav. Inst., Vol. 53, No. 7 (July 1927), Annapolis, pp. 745-758.

Rossitten. See Georgii, Walter: Ergebnisse des 4. Küstensegelflugwettbewerbs in Rossitten.

Rotary cylinder. See Hegge Zijnen, B. G. van der: Experiments on the velocity distribution in the boundary layer of an aerofoil with rotary cylinder.

Rotating c}dinders. See Frey, K.: Versuche mit rotierenden Zylindern in Verbindung mit Tragflächen.

- See Wolff, E. B., en C. Koning: Discussion of the results of the tests on

the boundary layer of the aerofoil with rotating cylinders.

--See Wolff, E. B., en C. Koning: Further experiments on the influence of

a rotating cylinder accommodated in a wing-section.

Rotating plane. See Heinze, E. P. A.: "Rotating plane" designed for safe landing in case of failure.

Round-the-world flight. Schlee and Brock complete first leg of Round-the-world flight.

Aviation, Vol. 23, No. 10 (Sept. 5, 1927), New York, p. 525, ill.

Rousseau, Jean Jacques. See Hydravion: Een onbekend voorlooper der luchtvaart: Jean Jacques Rousseau.

Rowe, N. E. See Jennings, W. G., N. E. Rowe, and I. Bowen: The application of the algebraic formulae of R. & M. 1056 to problems of aircraft performance.

Roy, Maurice. A propos des nouvelles recherches publiées par le laboratoire aérodynamique de Göttingen.

L'Aérophile, 35e année, Nos. 15-16 (ler-15 août 1927), Paris, pp. 240-242.

- A propos des théories aérodynamiques et de l'hydrodynamique rationnelle.

L'Aérophile, 35e année, Nos. 11-12, 13-14 (ler-15 juin, ler-15 juil. 1927), Paris, pp. 185-187, 215-217, ill.

Royal Air Force. Aircraft taking part in the 1927 R. A. F. display. Flight, Vol. 19, No. 26 (June 30,1927), London, pp. 433-442, ill.

- The eighth R. A. F. display.

Flight, Vol. 19, No. 26, 27 (June 30, July 7,1927), London, pp. 430-432, 452-460, diagr.

- New machines in the R. A. F. display.

Aeroplane, Vol. 32, No. 26 (June 29, 1927) London, pp. 768-772, ill., diagr.

- On conditions in the R. A. F.

Aeroplane, Vol. 33, No. 12 (Sept. 21, 1927) London, pp. 393-398.

- On letting the Air Force down.

Aeroplane, Vol. 33, No. 19 (Nov. 9, 1927), London, pp. 629-632.

- On the R. A. F. display.

Aeroplane, Vol. 33, No. 1 (July 6, 1927), London, pp. 5-28, ill.

- R. A. F. Cape flight (Official account, abridged).

Journ. Roy. Aer. Soc., Vol. 31, No. 194 (Feb. 1927), London, pp. 142-158.

- See McAlery, C. M.: The Royal Air Force in 1926.

Royal Australian Air Force. The Royal Australian Air Force.

Aeroplane, Vol. 32, No. 15 (Apr. 13, 1927), London, pp. 383-389, ill.

Royal Canadian Air Force. The Royal Canadian Air Force.

Aeroplane, Vol. 32, No. 19 (May 11, 1927) London, pp. 519-522, ill.

Rozendaal, John. Berlijnsche brief. ["Bartsch von Sigsfeld"]. (Details) Het Vliegveld, Ilde Jaarg., No. 9 (Sept. 1927), Amsterdam, pp. 304-308, ill.

- Berlijnsche brief de eerste opstijgung van den Luchtbol "Bartsch von

Sigsfeld".

Het Vliegveld, Ilde Jaarg., No. 12 (Dec. 1927), Amsterdam, pp. 414-416, ill.

Rudders. See Abraham, Martin: Abnutzung von Flugzeug-Steuerseilen.

- See Roche, J. A.: Study of balanced rudders.

Rühl, Karl. Beitrag zur Berechnung von Verbundstielen.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 5. Heft (14. März 1927), München, pp. 111-121, ill.

Russell. See Parachutes: Nouveau parachute.

- See Parachutes: Russell parachute.

Russell, J. M.: The Russell parachute.

Aviation, Vol. 23, No. 26 (Dec. 26, 1927), New York, pp. 1508-1510, ill.

Russell, P. R. Overland by air.

Popular Aviation, Vol. 1, No. 4 (Nov. 1927), Chicago, p. 58.

Russell, Rot E. Transportation accidents.

Aviation, Vol. 23, No. 6 (Aug. 8, 1927), New York, pp. 314-316, tabls.

Russia. Commercial aviation in Russia expands.

Aviation, Vol. 22, No. 23 (June 6, 1927), New York, p. 1222, map.

- See Ozeroff, G. A.: The Central Aero-Hydrodynamical Institute.

Ryan. Mechanical features of the trans-Atlantic plane. -

Amer. Mach., Vol. 66, No. 22 (June 2, 1927), New York, pp. 929-932.

- The Ryan Brougham.

Aero Digest, Vol. 11, No. 3 (Sept. 1927), New York, p. 308, ill. Aeroplane, Vol. 33, No. 23 (Dec. 7, 1927), London, pp. 762, 764, diagr.

- Ryan Brougham monoplane.

Aviation, Vol. 2, No. 20 (Nov. 14, 1927), New York, pp. 1173-1175, ill., diagr.

- See Edwards, A. J.: The plane Colonel Lindbergh used.

- See Hall, Donald A.: Technical preparation of the airplane "Spirit of

St. Louis"

- See Hall, Donald A.: Technical preparation of the Ryan New York-Paris

airplane.

- See Home wood, J. : Building the Ryan monoplane.

- See McLaughlin, George F. : The Ryan NY-P monoplane.

- See "Spirit of St. Louis." Technical notes on trans-Atlantic plane.

Ryan-Siemens. Ryan-Siemens engines.

Aero Digest, Vol 11, No. 5 (Nov. 1927), New York, pp. 534-535, ill., diagr. Aviation, Vol. 23, No. 17 (Oct. 24, 1927), New York, pp. 998-1000, ill., tabls.

S

S. I. S. A. Un'attività della S. I. S. A. da Torino a Trieste per le vie del cielo. L'Ala d'Italia, Anno 6, N. 4 (5 Aprile 1927), Milano, p. 133, ili.

Sabatier, J. Examen d'ensemble desprincipaux problèmes concernant la sécurité de la navigation aérienne.

Service Technique et Industriel de l'Aéronautique, Bulletin Technique, No. 42, Juin 1927, France, pp. 32.

La Technique Aéronautique, 18e année, U. S. Nos. 70, 71 (15 août, Sept. 1927), Paris, pp. 221-228,234-253.

- Researches on ailerons and especially on the test loads to which they should

be subjected.

Nation Advisory Committee for Aeomautics, Technical Memorandums No. 398, February 1927, Washington, pp. 25, ill. From " LaTechnique Aéronautique " November 15, and December 15, 1926.

Safety. Flyer equipped for high-altitude work.

Scient. Amer., Vol. 137 (Sept. 1927), New York, p. 207, ill.

- Hunting a safe airplane.

World's Work, Vol. 54 (Aug. 1927), Garden City, pp. 355-356.

- Progress, not safety, first.

Outlook, Vol. 147 (Sept. 21, 1927), New York, pp. 77-78.

- Safe flying.

Literary Digest, Vol. 95 (Oct. 22, 1927), New York, pp. 21-22, ill.

- Safer and saner flying.

Outlook, Vol. 147 (Dec. 7, 1927), New York, p. 419.

- Safety devices for aircraft.

Flight ,Vol. 19, No. 43 (Oct. 27, 1927), London, pp. 754-755.

- See Brunat, H.: Safety in airplane flight.

- See Brunat, H.: La sécurité en avion.

- See Cashman, Denis: The Guggenheim safe aircraft competition.

- See Cave-Brown-Cave, T. R. : Safety from fire in airships.

- See Commercial aviation : The safety in the books of daily reports guarding

the flying passenger against accident.

- See Dollfus, Charles: La sécurité en ballon libre.

- See Dumanois, E.: Au sujet der carburants peu inflammables.

- See Guggenheim, Harry F. : Importance of aerodynamic safety in aviation

- See Guggenheim fund: Le concours de sécurité de Daniel Guggenheim

fund.

- See Guggenheim Fund : On the safety first competition.

—■— See Guggenheim Fund: The safe-aircraft competition.

- See Ludington, Charles Townsend: Safety in air transport operations.

- See Mazer: Les engins de sauvatage.

- See Sabatier, J. : Examen d'ensemble des principaux problèmes concernant

la sécurité de la navigation aérienne.

Safety Code. Projets américains en vue d'un code de sécurité aérienne.

L'Aéronautique, (L'Aérotechnique, 5e année, Nos. 49, 50), 9me année, Nos. 92, 93 Qan. fév 1927), Paris, pp. 22, 51-52.

- Sectional committee for aeronautical safety code. Revision of aeronautical safety code.

Department of Commerce, Bureau of Standards (mimeographed), February 12,1927, Washington, pp. 10.

Sainte-Laguë. See Huguenard, Magnan et Sainte-Laguë: Sur la détermination cinématographique des polaires en vol des oiseaux, des planeurs et des avions.

Samuels, Frank E. With the Pacific coast air derby.

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, p, 566.

San Francisco. See Jobson, C. D. : The San Francisco airport.

San Francisco-Spokane derbies. The San Francisco-Spokane derbies. Aviation, Vol. 23, No. 14 (Oct. 3, 1927) New York, pp. 810-811, ill.

Sandberg, G. De aansprakelijkheid van den vervoerder bij het Internationale Luchtvervoer.

Het Vliegveld, Ilde Jaarg., No. 2 (Feb. 1927), Amsterdam, pp. 56-57.

Sandberg, G. Beschouwingen over de luchtvaartwet.

Het Vliegveld, Ilde Jaarg., No. 5 (Mei 1927), Amsterdam, pp. 153-155.

Sandford, W. T. Some recent developments in the design of rigid airships. Journ. Roy. Aer. Soc, Vol. 31, No. 203 (Nov. 1927), London, pp. 1029-1036.

Sandiford, Roberto. L'aviazione e il diritto di preda nella guerra marittima. Rivista Aeronautica, Anno 3, N. 10 (Ott. 1927), Roma, pp. 76-88.

Sandkamp, F. Kritische Betrachtungen zu Oberst Eugene Pagézy "Schiessen auf Flugzeuge und Luftschutz ".

Die Luftwacht, Sonderheft 1, Juni 1927, Berlin, pp. 1-30, ill.

Santa Maria. The "Santa Maria."

Aero Digest, Vol. 10, No. 5 (May 1927), New York, p. 430, ill.

- Il volo del "Santa Maria." Dali' America latina all' America anglosassone.

L'Ala d'Italia, Anno 6, N. 4 (5 Aprile 1927), Milano, p., 125, ill.

Santos-Dtjmont. Un prix Santos-Dumont.

L'Aérophile, 35e année, Nos. 5-6 (ler-15 mars 1927), Paris, p. 90.

Saratoga. The airplane carrier "Saratoga."

Aero Digest, Voi. 11, No. 6 (Dee. 1927) New York, pp. 715, 718, ill.

Satterfield, John M. Winged pullman service.

Slipstream, Vol. 9, No. 10 (Oct. 1927), Dayton, Ohio, pp. 12-13 ill.

Saunders, W. O. Then we quit laughing; interview with J. T. Daniels. Colliers, Vol. 80 (Sept. 17, 1927), Springfield, Ohio, p. 24, ill.

Sauter, J. Determining the efficiency of atomization by its fineness and uniformity.

National Advisory Committee for Aeronautics, Technical Memorandums No. 396, January 1927, Washington, pp. 23, ill., tables. From "Forschungsarbeiten auf dem Gebiete des Ingenieurwesens" No. 279,1926.

Savage, W. E. Why and how an airplane is static tested.

Aviation, Vol. 23, No. 20 (Nov. 14,1927), New York, pp. 1164-1166, ill.

Savola. "Savoia" seaplane S. 55 (Military or commercial).

National Advisory Committee for Aeronautics, Aircraft Circulars No. 33, Washington, March 1927, pp. 4, ill.

Savonius, Sigurd J. El flügelrotor.

Iberica, Ano 14, Num. 708 (31 die. 1927), Barcelona, pp. 390-391, ill.

Sayers, W. H. Display impressions.

Aeroplane, Vol. 33, No. 1 (July 6,1927), London, pp. 28, 37. Royal Air Force display.

- Lessons of the air manoeuvers.

Aeroplane, Vol. 33, No. 6 (Aug. 10,1927), London, p. 210.

Scandinavia. The R. A. F. Scandinavian tour.

Flight, Vol. 19, No. 33 (Aug. 18, 1927), London, pp. 579-581, ill.

Scaroni, Silvio. Colonel De Pinedo's long list of achievements.

U. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. C, pp. 20-22, ill.

- Significance of De Pinedo's great flight.

U. S. Air Services, Vol. 12, No. 9 (Sept. 1927), Washington, D. C, pp. 41-44, ill.

Scherberg, Max, and R. V. Rhode. Mass distribution and performance of free flight models. e

National Advisory Committee for Aeronautics, Technical Notes No. 268, Washington, October 1927, pp. 25, ill.

Scheubel, F. N. Uber die Zerstäubung in Vergasern. Die Luftwacht, Heft 10, Okt. 1927, Berlin, p. 586.

6333—28-11

Scheve, G. von. Bericht über den Verlauf der XVI. Ordentlichen Mitgliederversammlung der Wissenschaftlichen Gesellschaft für Luftfahrt E. V. (WGL) vom 16.bis 19. September 1927 in Wiesbaden.

Zeitschr. Fingt. Motorluftsch., 18. Jahrg., 19. Heft (14 Okt. 1927),. München, pp. 141-450, ill.

- Die Internationale Studiengesellschaft zur Erforschung der Arktis mit dem

Luftschiff, E. V.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., I.Heft (14. Jan. 1927), München, pp. 1-7, ül.

ScHBY, Oscar W. See Gardiner, Arthur W., and Oscar W. Schey: The comparative performance of an aviation engine at normal and high inlet air temperatures.

Schiff trophy. See Gavin, Arthur: Lieut. Arthur Gavin, U. S. N. wins Herbert Schiff trophy for 1927.

Schilhansl, M. Näherungsweise Berechnung von Auftrieb und Druckverteilung in Flügelgittern."

Die Luftwacht, Heft 10, Okt. 1927, Berlin, pp. 586-587.

Schlee. See Round-the-world flight: Schlee and Brock complete first leg of round-the-world flight.

Schlee, Edward F., and William Brock. Schlee and Brock fly to Japan. Aero Digest, Vol. 11, No. 4 (Oct. 1927), New York, pp. 390-391, ill., map.

Schmidt-Lamberg, Herbert. Die Luftfracht in ihrer Bedeutung für den internationalen Warenverkehr.

Die Luftwacht, Heft 4, April 1927, Berlin, pp. 207-208.

Schneider Cup. La Coupe Schneider.

L'Aérophile, 35e année, Nos. 17-18 (ler-15 sept. 1927), Paris, p. 265, map.

- La Coupe Schneider est gagnée par l'Angleterre.

L'Aérophile, 35e année, Nos. 19-20 (ler-15 oct. 1927), Paris, pp. 295-300, ill.

- Five miles a minute at Venice; Schneider Cup contest.

Literary Digest, Vol. 95 (Oct. 8, 1927), New York, p. 13, ill.

- Die Flugzeuge des Schneider-Wettbewerbs 1927.

Die Luftwacht, Heft 10, Okt. 1927, Berlin, pp. 569-573, ill.

- La Grande-Bretagne remporte la Coupe Schneider. Webster, sur super-marine S-5, a moteur Napier, couvre 350km a 453 km a l'heure.

L'Aéronautique, 9me année, No. 101 (oct. 1927), Paris, p. 303, ill.

- Great Britain wins the Schneider Cup race.

U. S. Air Service, Vol. 12, No. 10 (Oct. 1927), Washington, D. C, pp. 33-34.

- Great Britain wins Schneider trophy.

Aviation, Vol. 23, No. 15 (Oct. 3, 1927), New York, pp. 812-813, ill., map, diagr.

- Homecoming of the Schneider team.

Flight, Vol. 19, No. 40 (Oct. 6, 1927), London, pp. 693-695, ill.

- Italy wins Schneider Cup race.

Scient. Amer., Vol. 136 (Mar. 1927), New York, pp. 202-203, ill.

- The 1927 Schneider Cup Race.

Aviation, Vol. 23, No. 10 (Sept. 5, 1927), New York, pp. 536-538, ill.

- The 1927 Schneider trophy contest.

Flight, Vol. 19, Nos. 32, 33 (Aug. 11, 18, 1927), London, pp. 559-563, 576-578, ill., map.

- The Schneider challengers.

Aeroplane, Vol. 33, No. 6 (Aug. 10,1927), London, pp. 212-214, ill.

- The Schneider challengers in being.

Aeroplane, Vol. 33, No. 7 (Aug. 17, 1927), London ,pp. 242-248, ill., map.

Schneider Cup. The Schneider Trophy contest.

Aeroplane, Vol. 33, No. 13, 14 (Sept. 28, Oct. 5, 1927) London, p. 430, 462-192, ill.

- The Schneider trophy race.

Aero Digest, Vol. 11, No. 3 (Sept. 1927), New York, pp. 262-264, ill., map. Flight, Vol. 19, No. 38, 40 (Sept. 22, Oct. 6, 1927), London, pp. 661-664, 695-699, ill.

- The Schneider trophy race. A magnificent win for Great Britain.

Flight, Vol. 19, No. 39 (Sept. 29, 1927), London, pp. 684a-684r, ill., map.

- Lo svolgimento délia gara per la "Coppa Schneider" 1926.

Rivista Aeronautica, Anno 3, N. 1 (Gen. 1927), Roma, pp. 41-61, ill.

- On the Schneider Trophy victory.

Aeroplane, Vol. 33, No. 14 (Oct. 5, 1927), London, pp. 455-460, ill.

- Technique de la Coupe Schneider 1927.

L'Aéronautique, 9me année, No. 102 (nov. 1927), Paris, pp. 357-366, ill.

- The United States and the Schneider Cup.

U. S. Air Services, Vol. 12, No. 3 (Mar. 1927), Washington, D. C, pp. 11-12.

- With an eye on the Schneider Trophy.

IT. S. Air Services, Vol. 12, No. 8 (Aug. 1927), Washington, D. C, pp. 39-41, ill.

- See Bouché, Henri: Schneider Cup.

- See Gardner, Lester D.: The Schneider trophy race through American

eyes.

Schoeffel, M. F. The installation and correction of compasses in airplanes.

National Advisory Committee for Aeronautics, Technical Notes No. 262, Washington, August 1927, pp. 17, ill.

Scholle, Howard A. Military balloons during the French Revolution.

U. S. Air Services, Vol. 12, No. 5 (May 1927), Washington, D. C, pp. 41-42.

Schölte te Enschede. De huldiging van Schölte te Enschede.

Het Vliegveld, Ilde Jaarg., No. 8 (Aug. 1927), Amsterdam, pp. 266-268, ill.

Schools. Aeronautic laboratory of the California Institute. Science, ns, Vol. 66 (July 8,1927), Garrison, N. Y., sup. 10.

- Air courses in leading medical schools.

TJ. S. Air Services, Vol. 12, No. 5 (May 1927), Washington, D. C, p. 17.

- Guggenheim school of aeronautics.

Scientific Monthly, Vol. 25 (July 1927), Garrison, pp. 94-96, ill.

- "Learn to fly." Synopses of instruction and advantages offered in the

flying schools of the United States.

Aero Digest, Vol. 10, Nos. 4-6, Vol. 11, Nos. 1-2 (Apr.-Aug. 1927), New York, pp. 288-292, 394-398, 566-570; 168-170, ill.

- Learn to fly. Synopses of United States flight training opportunities.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, pp. 52-56, ill.

Schreiber, Otto. Zeitschrift für das gesamte Luftrecht. ZLR.

Schrenk, Martin. Einige weitere flugmechanische Beziehungen ohne Zuhilfenahme der Polare.

Zeitshcr. Flugt. Motorluftsch., 18. Jahrg., 17. Heft (14. Sept. 1927), München, pp. 399-405.

- Der neue Höhenforschungs-Freiballon Bartsch von Sigsfeld.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 22. Heft (28. Nov. 1927), München, pp. 513-516, ill.

--Uber den Einfluss des Umschlingungswinkels bei über Rollen laufenden

Steurseilen.

Zeitsehr. Flugt. Motorlufsch,, 18, Jahrg., 24. Heft (28, Dez. 1927), München, pp. 566o-67, Dl.

Schrenk, Martin. Zur Berechnung der Flugleistungen ohne Zuhilfenahme der Polare.

Zeitschr. Flugt. Motorluftschr., 18. Jahrg., 7. Heft (14. April 1927), München, pp. 158-167, ill., diagrs., tables.

- Zur Frage der Gewichtserleichterung von Luftschrauben.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 13. Heft (14. Juli 1927), München, pp. 299-300, ill.

- See Rechtlich, A., und M. Schrenk: Das Schweissen im Flugzeugbau.

Eine grundsätzliche Betrachtung.

Schrenk, O. Effects of roughness of airfoils.

National Advisory Committee for Aeronautics, Technical Memorandums No. 430, September 1927, Washington, pp. 6, ill., diagrs., tables. From Report Iii "Ergebnisse der Aerodynamischen Versuchsanstalt zu Göttingen"

- Systematic investigation of Joukowsky wing sections.

National Advisory Committee for Aeronautics, Technical Memorandums No. 422, July 1927, Washington, pp. 9, diagrs., table. From "Zeitschrift für Flugtechnik und Motorluftschiflahrt " May 28, 1927.

- Systematische Untersuchungen an Joukowsky-Profilen.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 10. Heft (28. Mai 1927), München, pp. 225-232, ill., diagrs.

- Uber die Theorie der Joukowsky-Profile.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 12. Heft (28. Juni 1927), München, pp. 276-284, illj

Schubart, L. Praktische Gesichtspunkte für den Ozeanflugverkehr.

Zeitschr.Flugt.Motorluftsch., 18. Jahrg., 23. Heft (14. Dez. 1927), München, pp. 546-551, ill.

Schulz, R. Das Weltflugwesen im Jahre 1927. IV. Industrie und Technik. Die Luftwacht, Heft 12, Dez. 1927, Berlin, pp. 694-708, ill.

- See Steiner, L., und R. Schulz: Internationale Flugzeugausstellung in

Prag 1927.

Schunck, H. K. Getting into aviation.

Saturday Evening Post, Vol. 200 (Nov. 5, 1927), Philadelphia, pp. 12-13, ill.

Schutte, Johann. Der luftschiffbau Schutte-Lanz 1909-1925. München und Berlin, r. Oldenbourg, 1927, pp. 152, ill.

Schwengler, Johannes. Das Grossluftschiff der Gegenwart und seine tatsächlichen Leistungen.

Die Luftwacht, Heft 10, Okt. 1927, Berlin, p. 582.

- Der Luftschiff-Wettbewerb der U. S. Navy.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 16. Heft (29. Aug. 1927), München, pp. 374-375.

Scintilla. Scintilla aircraft magnetos gain wide favor.

Aviation, Vol. 22, No. 13 (Mar. 28, 1927), New York, pp. 615-616, ill.

Scouting. See Maugeri, Franco: Esplorazione navale e navi portaerei.

Seaplanes. Un dur voyage d'étude en hydravion. Le circuit méditerranéen de nogués sur Schreck 21 moteur Gnome et Rhone "Jupiter." L'Aéronautique, 9me année, No. 96 (mai 1927), Paris, pp. 132-135, ill.

- Gigantic flying boat.

Scient. Amer., Vol. 136 (Mar. 1927), New York, p. 297, ill.

- The great flying-boat cruise. Four Supermarine " Southamptons " start

on 25,000 miles' flight.

Flight, Vol. 19, No. 41 (Oct. 20, 1927), London, pp. 732-734, ill.

- See Eula, Antonio: Studio sistematico alla vasca di galleggianti a scafo

per idrovolanti.

- See Gaunt, V. S.: Construction and assembly of float and boat seaplanes.

- See Herrmann, H.: Seaplane floats and hulls.

Seaplanes. See Oswald, S. L. : A consideration of the design of a light flying-boat.

- See Penny, R. E.: Seaplane development.

- See Witte, H.: Das neue Rohrbach-Verkehrs-Flugboot "Rocco."

- See Witte, M. H.: De matalen Rohrbach vliegtuigen de bliegboot

"Robbe."

Searchlights. Military searchlights.

Slipstream, Vol. 8, No. 6 (June 1927), Dayton, Ohio, pp. 11-12, 30, ill.

Seeds, C. See Rasche, T., and C. Seeds: I want to fly to Europe.

Seewald, F. Die Erhöhung des Auftriebs durch Ausblasen von Druckluft an der Saugseite eines Tragflügels.

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National Advisory Committee for Aeronautics, Technical Memorandums No. 441, December, 1927, Washington, pp. 10, ill. From "Zeitschrift für Flugtechnik und Motorluftschiflahrt," August 16, 1927.

Seiferth, R. Experiments with three horizontal empennages.

National Advisory Committee for Aeronautics, Technical Memorandums No. 419, July 1927, Washington, pp. 7, ill., tables. From Report III of the Göttingen Aerodynamic Institute, 1927.

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National Advisory Committee for Aeronautics, Technical Memorandums No. 418, June 1927, Washington, pp. 6, ill., diagrs., tables. From Report III of the Göttingen Aerodynamic Institute, 1927.

---Testing a windmill airplane (" Autogiro ").

National Advisory Committee for Aeronautics, Technical Memorandums, No. 394, January. 1.927, Washington, pp. 9, ill., tables. P'rom "Zeitschrift für Flugtechnik und Motorluftschiflahrt." November 27, 1926.

Seldes, G. Transatlantic.

New Republic, Vol. 51 (June I, 1927), New York, pp. 46-47.

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Aviation, Vol. 22, No. 9 (Feb. 28,1927), New York, pp. 416-417, ill.

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Popular Aviation, Vol. 1, No. 3 (Oct. 1927), Chicago, pp. 14-]5, ill.

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Shoemaker, James M. Air force tests of Sperry messenger model with six sets of wings.

National Advisory Committee for Aeronautics, Report No. 269, September 20, 1927, Washington, Government Printing Office, 1927, pp. 20, ill., diagrs., tables.

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Aeroplane, Vol. 32, No. 2 (Jan. 12, 1927), London, p. 42, diagr.

Short, Mac. See Warner, Edward Pearson, and Mac Short: Approximations for column effect in airplane wing spars.

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- Shirley J. Short, air mail pilot, winner Harmon trophy.

U. S. Air Services, Vol. 12, No. 2 (Feb. 1927), Washington, D. C, p. 37, ill.

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Sikorsky. The new Sikorsky flying boat.

Aviation, Vol. 23, No. 10 (Sept. 5, 1927), New York, pp. 522-524, ill.

- The Sikorsky S.36.B amphibian.

Flight, Vol. 19, No. 42 (Oct. 20, 1927), London, pp. 738-739, diagr.

- The Sikorsky type S-36-B twin engined amphibian.

Aero "Digest, Vol. 11, No. 3 (Sept. 1927), New York, pp. 284-285, ill., diagr.

- The twin-motored Sikorsky model S-37.

Aero Digest, Vol. 11, No. 4 (Oct. 1927), New York, pp. 422-424, ill., diagr.

Silla, L. Collectanea aeronautica.

Roma, Tipografia del Senato, 1927 a. V. (2 vols.).

Silva, Louis de. The first flight to France. Seventeen years ago the Hon. C. S. Rolls made the first cross-channel flight from Britain. Airways, Vol. 3, No. 10 (June 1927), London, pp. 336-338, ill.

Silvester, Norman L. The use of barometric charts in the navigation of airships.

Journ. Roy. Aer. Soc, Vol. 31, No. 193 (Jan. 1927), London, pp. 60-80, diagr.

Simmons, L. F. G., and A. Bailey. Note on a hot-wire speed and direction meter.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 9971003, ill., diagr.

Simmons, L. F. G. See Fage, A., and L. F. G. Simmons: An investigation of the air-flow pattern in the wake of an aerofoil of finite span.

- See Reif, E. F., and L. F. G. Simmons: A distant-reading instrument for

the measurement of small displacements.

Simpson, G. C. See Clayton, H. Helm: World weather records.

Sims, C. J., and E. W. J. Mardles. The effect of metallic sols in delaying detonation in internal combustion engines.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp., 655-665, tabls.

Sims, C. J. See Callendar, H. L., R. O. King, and C. J. Sims: Report on dopes and detonation.

Singapore. The "Singapore" all-metal flying boat.

Engineer, Vol. 144, No. 3733 (July 29, 1927), London, p. 131, ill.

Single Wheel Amphibian. Grover Loening granted patent on single wheel Amphibian.

U. S. Air Services, Vol. 12, No. 5 (May 1927), Washington, D. C, p. 40, diagr., ill.

Sisco, F. T. New metals for aircraft.

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, pp. 522, 618-619.

Skies. See Thoret, J.: Les avions qui vont sur skis. Une visite a l'aviation Finlaiulaise—A l'ecole de l'aero 0. Y.

Slawson, II. H. Night air mail upsets city manners.

U. S. Air Services, Vol. 12, No. 7 (July 1927), Washington, D. C, pp. 41, 44.

Sloan, George A. American cotton and American airplanes. Aviation, Vol. 23, No. 2 (July 11, 1927), New York, pp. 88-89.

Slotted wings. On salvation by slots.

Aeroplane, Vol. 33, No. 17 (Oct. 26,1927), London, pp. 570-572, ill.

- Slotted wings in practice.

Aviation, Vol. 22, No. 7 (Feb. 14, 1927), New York, pp. 328-329, 332, ill.

- " Stalled but under perfect control." Sir Samuel Hoare tests new Handley

Page automatic slots.

Flight, Vol. 19, No. 47 (Nov. 24, 1927), London, pp. 809-810, ill.

- See Everling, E.: Slotted-wing airplanes.

- See Everling, E.: Spaltflugel-Flugzeuge.

- See Giacomelli, R.: Dispositivi per il controllo laterale e l'aumento della

portanza neH'ala dell'aeroplano e deiruccello.

- See Handley Page, F.: Les results obtenus avec l'aile a fente.

- See Watter, Michael: The slotted wing.

Smith. See California to Hawaii: Smith and Bronte fly single engined plane from California to Hawaii.

Smith, R. H. Air force and moment for N-20 wing with certain cut-outs.

National Advisory Committee for Aeronautics, Report No. 266, July 25, 1927, Washington, Government Printing Office, 1927, pp. 12, ills., diagrs., tables.

- Lift, drag, and elevator hinge moments of Handley-Page control surfaces.

National Advisory Committee for Aeronautics, Report No. 278, December 21, 1927, Washington, Government Printing Office, 1927, pp. 22, ill., diagrs., tables.

- Method of correcting wind tunnel data for omitted parts of airplane

models.

National Advisory Committee for Aeronautics, Technical Notes No. 254, January 1927, Washington, pp. 10, ill., tables.

--Resistance and cooling power of various radiators.

National Advisory Committee for Aeronautics, Report No. 261, June 6, 1927, Washington, Government Printing Office, 1927, pp. 16, ill., diagrs., tables.

Smithsonian Institution. Recent additions to Smithsonian collection. U. S. Air Services, Vol. 12, No. 9 (Sept. 1927), Washington, D. C, pp. 51-52.

Snow, Howard. The Fairchild organization.

Aviation, Vol. 23, No. 11 (Sept. 12, 1927), New York, pp. 582-584, ill.

■■--Fairchild spray deflecting pontoons.

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, pp. 536, 538, ill.

Società Anonima Italiana. Nei cantieri della S. A. I. costruzioni aeronautiche di marina di Pisa.

L'Ala d'Italia, Anno 6, N. 4 (5 Aprile 1927), Milano, pp. 140-142, ill.

Society of Automotive Engineers. The S. A. E. holds annual aeronautic meeting Aviation, Vol. 23, No. 18 (Oct. 31, 1927), New York, pp. 1060-1061, ill.

Soden, F. O. Parachutes.

Journ. Roy. Aer. Soc., Vol. 31, No. 202 (Oct. 1927), London, pp. 915-932.

Sokjaer, O. B. J. A hundred-seater aeroplane. A giant flying wing, accommodating 100 people, is nearing completion in Germany. Junkers J. 1000. Airways, Vol. 3, No. 7 (Mar. 1927), London, pp. 204-206, ill.

Sondaggi. Aerologici eseguiti nei giorni stabiliti dalla Commissione per la esplorazione dell'alta atmosfera (Ministero dell' aeronautica; aviazione civile e traffico aereo; ufficio presagi). I: Gennaio 1926-maggio 1926-settembre 1926. II: Febbraio 1927.

Roma, lit. dell' Ufficio presagi, 1927, 2 vols., pp. 30; 11.

South Afhica. Civil aviation in South Africa.

Aeroplane, Vol. 33, No. 9 (Aug. 31, 1927), London, pp. 301-304, ill.

- The South African air force.

Aeroplane, Vol. 33, No. 9 (Aug. 31,1927), London, pp. 298-301, ill.

- Touring South Africa in a light 'plane.

Flight, Vol. 19, No. 25 (June 23, 1927), London, pp. 417-418, ill., map.

South America. Avions française pour l'Amérique du Sud.

L'Aéronautique, 9me année, No. 97 (juin 1927), Paris, pp. 200-202, ill.

- See M. L.: La ligne aérienne France-Amérique du Sud.

- See Ritscher, Alfred: Terrestriche Vorbereitung für den Luther-Flug an

der Ostküste Südamerikas.

- See Santa Maria: Il volo del "Santa Maria." Dall'America latina all'

America anglosassone.

- See Van Muffling, Adrian: Air transportation and colonization in South

America.

South Atlantic Ocean. South Atlantic spanned.

Popular Aviation, Vol. 1, No. 5 (Dec. 1927), Chicago, p. 18, ill.

Southwell, R. V. On the calculation of stresses in the hulls of rigid airships.

Aeronautical Research Committee, Reportsand Memoranda, No. 1057, Nov., 1926, London, 1927, pp. 49, diagr.

Southwell, R. V., and H. J. Gough. On the concentration of stresses in the neighbourhood of a small spherical flaw; and on the propagation of fatigue fractures in "statically isotropic" materials.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 862-883, ill., daigr., tabls.

Space. See Lorenz, H.: Die Möglichkeit der Weltraumfahrt.

Spain. L'industrie aéronautique espagnole.

L'Aéronautique, 9me année, No. 95 (avril 1927), Paris, pp. 125-126.

- See Loring, Jorge: Fabricación de aeroplanos en España. Los talleres

Loring.

Sparrow, S. W., and M. A. Thorne. Friction of aviation engines.

National Advisory Committee for Aeronautics, Report No. 262, August 1,1927, Washington, Government Printing Office, 1927, pp. 27, ill., diagrs.

Spars. See Lee, John G.: Metal wing spars.

- See Warner, Edward Pearson, and Mac Short: Approximations for

column effect in airplane wing spars.

Spartan. The Spartan C-3.

Aero Digest, Vol. 10, No. 3 (Mar. 1927), New York, p. 226, ill.

-- The Spartan C-3 commercial plane.

Aviation, Vol. 22, No. 9 (Feb. 28, 1927), New York, pp. 421-422, ill.

Speed. New formula for speed calculations.

Flight, Vol. 19, No. 22 (June 2,1927), London, p. 353, diagr.

- Speeds at the Bournemouth meeting.

Flight, Vol. 19, No. 17 (Apr. 28rl927), London, p. 257.

Speed indicators. Paris flight shows need for speed indicator.

Pop. Mech., Vol. 48 (Aug. 1927), Chicago, pp. 183-185, ill., map.

Speight, W. L. Aviation in South Africa.

Aero Field, Vol. 2, Nos. 6-7 (Oct.-Nov. Dec. 1927), Sutton Coldfield, England, pp. 127-129, 132, 148-149, map.

Spencer, G. K. 1926, a turning point in American aviation.

Current History Magazine, New York Times, Vol. 25 (Jan. 1927), New York, pp. 465-479, ill., maps.

Sperry. The Sperry aero oil engine.

Aviation, Vol. 22, No. 10 (Mar. 7, 1927), New York, p. 470.

Sperry, Elmer A. The light supercharged diesel engine for use in air service. Mechanical Engineering, Vol. 49, No. 7 (July 1927), New York, pp. 723-726.

Sperry messenger. See Shoemaker, James M.: Air force tests of Sperry messenger model with six sets of wings.

Sphere. See Flachsbart, O.: Neue Untersuchungen über den Luftwiderstand von Kugeln.

Spinning. Spinning tests oh observation planes—McCook Field.

Aviation, Vol. 22, No. 22 (May 30, 1927), New York, pp. 1133-1134, ill.

- See Bradfield, F. B., and L. P. Coombes: Autorotation measurements on

a model aeroplane with zero stagger.

- See Bryant, L. W., and S. B. Gates. The spinning of aeroplanes.

- See Clevenger, Cloyd P.: The way to control a ship in spinning.

- See Irving, H. B., and A. S. Batson: Some experiments on a model of a

B. A. T. "Bantam" aeroplane with special reference to spinning accidents. Part 1. Longitudinal control and rolling experiments.

- See Townend, H. C. H., and T. A. Kirkup: Some experiments on a model

of a B. A. T. "Bantam" aeroplane, with special reference to spinning accidents. Part II. Experiments on forces and moments (including rudder control).

Spirit of St. Louis. Characteristics of the "Spirit of St. Louis."

U. S. Air Services, Vol. 12, No. 8 (Aug. 1927), Washington, D. C, p. 58.

- Lindbergh's partner; monoplane, Spirit of St. Louis.

Literary Digest, Vol. 94 (July 1927), New York, pp. 18-19, ill., diagr.

- The performance of the Ryan monoplane.

Aeroplane, Vol. 32, No. 25 (June 22, 1927), London, p. 744.

- Ryan NY-P a development of the Ryan M-2.

Aviation, Vol. 22, No. 25 (June 20, 1927), New York, pp. 1364-1368, ill.

Spirit of St. Louis. The Ryan trans-Atlantic monoplane.

Aeroplane, Vol. 32, No. 23 (June 8, 1927), London, pp. 684-638, ill.

- ''The Spirit of St. Louis." The Ryan monoplane described.

Flight, Vol. 19, No. 23 (June 9, 1927), London, pp. 376-379, 385, ill.

- Technical notes on trans-Atlantic plane.

Slipstream, Vol. 8, No. 6 (June 1927), Dayton, Ohio, p. 31, ill.

- See Hall, Donald A.: Technical preparation of the airplane "Spirit of St.

Louis."

- See Lindbergh, Charles Augustus: Précisions nouvelles sur le matériel de

Lindbergh.

Splitdorf magneto. Splitdorf model VA aircraft magneto.

Aviation, Vol. 23, No. 14 (Oct. 3, 1927), New York, p. 811, ill.

Spokane. On-to-Spokane for $50,000 in prizes.

U. S. Air Services, Vol. 12, No. 8 (Aug. 1927), Washington, D. 0., pp. 26-28, ill.

- Results of Spokane race events.

Slipstream, Vol. 8, No. 10 (Oct. 1927), Dayton, Ohio, pp. 39-41, ill.

-- Spokane national air races.

Aero Digest, Vol. 11, No. 3 (Sept. 1927), New York, pp. 280, 345, map.

- Spokane races of great value to all concerned.

U. S. Air Services, Vol. 12, No. 9 (Sept. 1927), Washington, D. C, pp. 13-14.

--See Allen, G. B.: The siege of Spokane. The successful 1927 National

air races.

- See Wilson, E. E.: Design reaction from the Spokane pursuit races. Sfurt. See Baiimgarth, Erwin: Flying for sport.

Sprigg, T. Stanhope. Famous air trophies.

Airways, Vol. 3, No. 6 (Feb. 1927), London, pp. 189-191, ill.

--A jungle airway. Multi-engined air liners operate a 14,000 miles' daily

service in the Heart of Africa.

Airways, Vol. 3, No. 12 (Aug. 1927), London, pp. 403-404, 410, ill.

- The Paris aero show.

Airways, Vol. 3, No. 5 (Jan. 1927), London, pp. 155-157, 166, ill.

--Rules of the airway. Traffic and signal regulations which must be followed

by all pilots of aircraft.

Airway, Vol. 3, No. 7 (Mar. 1927), London, pp. 211-212, ill.

- Some famous flights.

Airways, Vol. 3, No. 11 (July 1927), London, pp. 348-350, ill.

Springs, Elliott White. Flivvers—Horizontal and vertical.

U. S. Air Services, Vol. 12, No. 10 (Oct. 1927), Washington, D. C, pp. 22-26.

- Nocturne Militaire.

London, John Hamilton, Ltd., 1927, pp. 284, ill.

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Stability. See Garner, H. M., and S. B. Gates: The full scale determination of the lateral resistance derivatives of a Bristol Fighter aeroplane.

--See Glauert, H.: The rolling and yawing moments of an aerofoil in straight

flight.

- See Graffigny, Henry de: La stabilisation des aérostats par procédé

thermique.

Stability. See Haus, Fr.: La stabilité dynamique des avions.

- See Lippisch, A.: Näherungsverfahren zur Bestimmung der statischen

Stabilität beim Eindecker.

- See Reif, E. F.: Measurement of the rotary derivative Mq on the l/5th

scale model Bristol Fighter in the Duplex wind tunnel.

Stack, T. Melville. By light aeroplane to India.

Journ. Rqy. Aer. Soc, Vol. 31, No. 202 (Oct. 1927), London, pp. 905-914.

- To India by light plane. How two light aeroplanes flew 5,541 miles

across land and sea, mountains and deserts to India.

Airways, Vol. 3, No. 10 (Tune 1927), London, pp. 315-318, 320, ill.

Stall-proof. See Lachmann, G.: Stall-proof airplanes.

Stamer, F., und A. Lippisch. Der Bau von Flugmodellen. Im Auftrage des Reichsverbandes Deutscher Lehrer zur Förderung des motorlosen Fluges und der Vereinigung Deutscher Werklehrer.

Berlin-Charlottenburg, C. i. E. Volkmann Nachfolger (g. m. b. h.), pp. 74, ill.

Standard Oil Co. Standard Oil of California assists aeronautics. Paints names of towns on all its warehouses on Pacific Coast.

u. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. c, pp. 34-35.

Standardization. Standardization.

Slipstream, Vol. 8, No. 10 (Oct. 1927), Dayton, Ohio, pp. 14-15, ill.

- Standardization marks reliability tour.

Aviation, Vol. 23, No. 2 (July 11, 1927), New York, pp. 77-79, map, ill.

- See Hardecker, J. F. : Standardization in the air.

Stanley, P. II. Airplane performance testing.

Purdue Engineering Review, Vol. 22, No. 2 (Jan. 1927), Lafayette, pp. 5-6, 32.

Stanzani, M. Organizzazione logistica per la R. Aeronautica.

Rivista Aeronautica, Anno 3, N. 2 (Feb. 1927), Roma, pp. 41-48, ill.

Starters. Eclipse starters.

Aero Digest, Vol. 10, No. 6 (June 1927), New York, p. 584, ill.

- See Hey wood Starter: The Hey wood injector starter.

- See Poincaré, L.: Le démarrage des moteurs d'aviation.

State rights. See Rochford, Daniel: State and Federal rights. Massachusetts tests right to refuse to recognize a federal piloting license within its boundaries.

Static testing. See Savage, W. E.: Why and how an airplane is static tested.

Steels. See Henshaw, P. B.: Valve steels.

Steering. See Boykow, J. M.: Motorische Flugzeugsteuerung.

Stefansson, V. Airplane and the arctic.

Harper's Monthly Magazine, Vol. 155 (Oct. 1927), ISew York, pp. 595-604.

- New polar trails; the airways of 1926.

Forum, Vol. 77 (Jan. 1927), New York, pp. 54-64.

Steiner, Ludwig, und R. Schulz. Internationale Flugzeugausstellung in Prag 1927.

Die Luftwacht, Heft 7, Juli 1927, Berlin, pp. 361-374, ill.

Steiner, Ludwig. Zur Mechanik des Weitfluges.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 24. Heft (28. Dez. 1927), München, pp. 567-578, ill.

Steinitz, Otto. Fehlergrenzen der Näherungsformel für Widerstandsmomente.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 3. Heft (14. Feb., 1927), München, pp. 67-69, ill.

Steinitz, Otto. Die Fertigung von Rohblöcken für den Luftschraubenbau.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 4. Heft (28. Feb., 1927), München, pp. 93-95, ill.

Stern, Kenneth D. Aerial life savers.

Aero Digest, Vol. 10, No. 3 (Mar. 1927), New York, p. 175, ill. Parachutes.

Stettin. Wettbewerb Verwaltungs und Abfertigungsgebäude Flughafen Stettin. Deutsche Bauzeitung, Bd. 61, Nr. 18 (14. Sept. 1927), Berlin, pp. 113-120, ill.

Steude, Erich. Leistungs-Berechnungen von Verkehrsluftschiffen für transatlantische Luftverkehrslinien.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 3. Heft (14. Feb. 1927), München, pp. 69-72.

Steup, A. Met de Hollandsche Escadrille naar de Internationale Vliegwedstri-jden te Zürich 12-21 Augustus 1927.

Het Vliegveld, Ilde Jaarg., No. ü (Sept. 1927), Amsterdam, pp. 294-297, ill.

Stevens, F. W. The gaseous explosive reaction—the effect of inert gases.

National Advisory Committee for Aeronautics, Report no. 280, March 16, 1928, Washington, Government Printing Office, 1927, pp. 12, ill., diagrs., tables.

Stevens, H. L. The behaviour of certain aeroplanes when the controls are abandoned in stalled flight.

Techn. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 339347, table.

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Aeronautical Research Committee, Reports and Memoranda, No. 1089 (Ae. 268), Feb., 1927, London, 1927, pp. 2, diagr.

- Full scale tests of a Bristol Fighter with increased rudder control.

Tech. Rep. Aer. Res. Com., 1925-26, London, His Majesty's Stationery Office, 1927, pp. 348-350, diagr.

--Preliminary report on the fitting of slots and flaps and slot-and-aileron

control to a Bristol Fighter.

Aeronautical Research Committee, Reports and Memoranda, No. 1088 (Ae. 267), Feb., 1927, London, 1927, pp. 3, diagr.

Stewart, Oliver. Aeolus, or The future of the flying machine. London, 1927, Kegan Paul, Trench, Trubner & Co. Ltd. pp. 96.

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Airways, Vol. 3, No. 11 (July 1927), London, p. 372.

- Flying upside-down.

Airways, Vol. 3, No. 6 (Feb. 1927), London, p. 194, diagr.

---The falling leaf.

Airways, Vol. 3, No. 7 (Mar. 1927), London, pp. 226, 230, diagr.

- Future evolutions. New aerobatics which improved aricraft performance

may render possible.

Airways, Vol. 3, No. 10 (June 1927), London, p. 335, diagr.

- New evolutions. To dive to upside-down position was for long an almost

legendary manaeuvre.

Airways, Vol. 3, No. 9 (May 1927), London, p. 290, diagr.

- Spinning. Don't attempt to look up during a spin or ...

Airways, Vol. 3, No. 5 (Jan. 1927), London, p. 161, diagr.

Stinson. Stinson commercial airplane—type S M.-l. A semicantilever monoplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 60, Washington, October 1927, pp. 7, ill.

- The Stinson Detroiter monoplane.

Aeroplane, Vol. 33, No. 23 (Dec. 7, 1927), London, p. 764, diagr.

BIBLIOGRAPHY OF AERONAUTICS, 1927 165

s

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Aviation, Vol. 22, No. 18 (May 2, 1927), New York, p. 906, ill.

-- See National Air Tour: Stinson wins third air tour.

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Stinson, Edward A. Flying in winter.

Aero Digest, Vol. 11, No. 6 (Dec. 1927), New York, p. 660, 111.

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Aviation, Vol. 23, No. 4 (July 25, 1927), New York, pp. 204-206, ill.

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Streamline. See Prandtl, Ludwig: Effect of streamline curvature on lift of biplanes.

Stress. See Tuzi, Z.: Photo-elastic study of stress on a specimen of three dimensional form.

Stromberg carburetors. Development of Stromberg Carburetors. Aviation, Vol. 23, No. 5 (Aug. 1, 1927), New York, p. 247, ill.

- Stromberg's new aircraft carburetors.

U. S. Air Services, Vol. 12, No. 2 (Feb. 1927), Washington, D. C, p. 41, ill.

Strother, D. H., and H. N. Eaton. A superheat meter or differential thermometer for airships.

Department of Commerce, Bureau of Standards, Technologic Papers of the Bureau o Standards, No. 359 [Part of Vol. 22], Washington, Government Printing Office, 1927, pp 171-182, ill.

Stubblefield, B. If you had to fly.

Sunset, Vol. 59 (Oct. 1927), San Francisco, pp. 14-15, ill. diagr.

Studley, Barrett. The flight school.

Aero Digest, Vol. 10, No. 6 (June 1927), New York, pp. 562, 564, 625.

- Flight training.

Aero Digest, Vol. 10, Nos. 3-5 (Mar-May 1927), New York, pp, 171, 262, 286, 357, 390, 392, 488, ill.

- Flight training of student naval aviators.

Proc. United States Nav. Inst., Vol. 53, No. 7 (July 1927), Annapolis, pp. 764-773.

Stunt flying. Counting the cost of stunt flying.

Literary Digest, Vol. 94 (Sept. 3, 1927), New York, pp. 10-11.

Suffrin-Hébert et Jarry. La construction des avions. Caractéristiques générales des avions. Matières premières. Détails de construction des différentes pièces.

Paris, E. Chiron, éditeur, 1927, pp. 500, ill.

Sumatra. Sumatra.

Het Vliegveld, Ilde Jaarg., No. 2 (Feb. 1927), Amsterdam, pp. 57-59, ill.

Superchargers. See Engines: Dispositifs de suralimentation pour moteurs d'aviation.

- See Gregg, David: Commercial superchargers.

- See "Wasp": New GE supercharger.

- See Wead, F. W. : Next step, superchargers?

Supercharging. The supercharging of engines.

Aeroplane, Vol. 32, No. 6 (Feb. 9,1927), London, p. 150.

Supermarine "Southampton." Supermarine aviation works completes twin-engined boat.

Aviation, Vol. 23, No. 18 (Oct. 31,1927), New York, p. 1062, ill.

Surveying. The Canadian method of mapping from oblique photographs. Aeroplane, Vol. 32, No. 20 (May 18,1927), London, pp. 578-580, ill.

—— Commercial air surveying.

Aeroplane, Vol. 32, No. 20 (May 18,1927), London, pp. 570-574, ill.

- Flying for air survey.

Aeroplane, Vol. 32, No. 7 (Feb. 16, 1927), London, pp. 176-178, ill.

- On air surveying as a profession.

Aeroplane, Vol. 32, No. 20 (May 18,1927), London, pp. 565-568, ill.

- On the progress of air survey.

Aeroplane, Vol. 33, No. 18 (Nov. 2,1927), London, pp. 601-603, ill.

- Some commercial aspects of air survey.

Flight, Vol. 19, No. 20 (May 19,1927), London, p. 317.

- See Fuller, E. W. : Aerial photography and surveying.

- See Fuller, E. W. : The aerial surveyor at work.

- See Hall, R. Scott: Polar exploration and survey by air.

Sutcliffe, W. Testing of aircraft materials.

Joum. Roy. Aer. Soc, Vol. 31, No. 196 (Apr. 1927), London, pp. 348-355.

Sutton, A. J., and G. H. W. Clifford. An experimental investigation into the properties of certain framed structures having redundant bracing members.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 946-974, diagr., tabls.

Suyehiro, Kyoji. A new method of photographing air current.

Proceedings of the Imperial Academy, Vol. 3, No. 5 (May 1927), Tokyo, pp. 269-270, ill.

Sweeney, S. B. Some economic aspects of aircraft transportation.

Annals, American Academy Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 159-181, maps.

Swiss-Africa. The Swiss-African flight. From Zurich to Cape Town in a Dornier seaplane.

Flight, Vol. 19, No. 9 (Mar. 3, 1927), London, pp. 117-118, ill., map. Lieut. Mittelholzer.

Switzerland. L'aviation civile suisse.

L'Aéronautique, 9me année, No. 99 (août 1927), Paris, pp. 260-261, ill.

- Die Weltluftmächte. 5. Kapitel. Die Schweiz als Luftmacht.

Die Luftwacht, Heft 11, Nov. 1927, Berlin, pp. 597-616, ill.

Sylva, Camillo. Sinossi del corso di lezioni teoiche tenute agli allievi piloti militari della Scuola Gabardini.

Novara, tip. E. Cattaneo, 1927, p. 107, ili.

Seconda edizione, aumentata ed aggiornata (Aeronautica Gabardini S. A. Cameri; campo seriola Natale e Silvio Palli).

T

TS. See Rhode, R. V. : Pressure distribution on wing ribs of the VE-7 and TS airplane in flight.

T. S. F. Équipements de T. S. F.

L'Aéronautique, (L'Aérotechnique, 5me année, No. 58), 9me année, No. 101 (oct. 1927), Paris, pp. 315-317, ill.

Tail-first machine. Germany revives "tail-first" machine. Focke-Wulf 19 passes its preliminary tests successfully.

Flight, Vol. 19, No*. 39 (Sept. 29, 1927), London, pp. 679-681, 690, ill.

Tail spins. See Korvin-Kroukovsky, b. v.: Tail spins and flat spins.

Take-off. See Reid, Elliott G., and Thomas Carroll: A warning concerning the take-off with heavy load.

Tanaka, Yoshio, Yuzaburo Nagai, and Kinsei Akiyama. Lower limit of inflammability of ethyl alcohol, ethyl ether, methyl eyclohexane and their mixtures.

Report of the Aeronautical Research Institute, Tokyo Imperial University, No. 21, (Vol. 2, 7) (March 1927), Tòkyo, pp. 235-217, ill., tables.

Tanaka, Yoshio, and Yuzabro Nagai. Studies on inflammabilitj' of hydrogen. I. Influence of ethjde bromide on the limits of inflammability of hydrogen-air mixtures.

Report of the Aeronautical Research Institute, Tokyo Imperial University, No. 22, (Vol. 2, 8) (April 1927), Tokyo, pp. 249-258, diagr.

- Studies on inflammability of hydrogen. II. Influence of organic bromine

and iodine compounds on the upper limit of inflammability of hydrogen-air mixtures.

Report of the Aeronautical Research Institute, Tokyo Imperial University, No. 23, (Vol. 2, 9), (April 1927), Tokyo, pp. 259-261.

--Studies on inflammability of hydrogen. III. Influence of di-ethyl selenide

on the limits of inflammability of hydrogen-air mixtures.

Report of the Aeronautical Research Institute, Tokyo Imperial University, No. 24, (Vol. 2, 10) (May 1927), Tokyo, pp. 265-271, diagrs.

- Studies on inflammability of hydrogen. IV. Influence of hydrogen

selenide on the limits of inflammability of hydrogen-air mixtures.

Report of the Aeronautical Research Institute, Tokyo Imperial University, No. 25, (Vol. 2, 11), (May 1927), Tokyo, pp. 275-284, ill., diagr.

Tanks. On fire-preventing petrol tanks.

Aeroplane, Vol. 32, No. 9 (Mar. 2, 1927), London, pp. 217-220.

Tanneberger, W. Die Luftfahrt in Gesetzgebung und Verwaltung.

Die Luftwacht, Heft 8, Aug. 1927, Berlin, pp. 459-461.

Tapsell, H. J. Some mechanical tests of cast bars of Alpax.

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 8S4-892, diagr., tabls.

- See Gough, H. J., and H. J. Tapsell: Some comparative fatigue tests in

special relation to the impressed conditions of test.

Tarantini, Lello. Organizzazione dei servizi di segnalazione aeronautica a terra occorrenti per la navigazione aerea.

Rivista Aeronautica, Anno 3, N. 3 (Marzo 1927), Roma, pp. 47-69, ill.

Targa, Spartaco Concorso aereo nel combattimento terrestre. Rivista Aeronautica, Anno 3, N. 4 (Aprile 1927), Roma, pp. 7-11.

Taximeter. An air taximeter.

Aeroplane, Vol. 32, No. 17 (Apr. 27, 1927), London, p. 468, ill.

Taxis. On air taxi services.

Aeroplane, Vol. 32, No. 6 (Feb. 9, 1927), London, 137-142.

Taylor, G. I. Note on the connection between the lift on an aerofoil in a wind and the circulation round it.

Techn. Rep. Aer. Res. Com., 1925-26, London, His Majesty's Stationery Office, 1927, pp. 189-194, diagr.

Taylor, P. B. The carburetor air heater for the Wright Whirlwind engine. Aviation, Vol. 23, No. 7 (Aug. 15, 1927), New York, pp. 370, ill.

Taylor, R. C. Alignment and checking of components.

Journ. Roy. Aer. Soc, Vol. 31, No. 203 (Nov. 1927), London, pp. 1037-1049, diagr.

Taylor, William B. Army and Navy planes, flying for Red Cross, saved thousands of lives in Mississippi flood.

U. S. Air Services, Vol. 12, No. 7 (July 1927), Washington, D. C, pp. 51-52, ill.

Tchensov, N. See Wettchinkine, N., S. Kamener, N. Tchensov: Dynamique du vol (en russe).

Tempelhof. See Renvoisé: Le port aérien du Bourget et les grands énéne-ments dont il a été le theatre en 1927. Comparaison des trois grands ports aériens Le Bourget, Croydon, Tempelhof.

Teofilato, Pietro. Le pressioni aerodinamiche sopra una superficie rigida finita.

L'Aerotecnica, Voi. 7 (Anno 5), N. 2 (Feb. 1927), Pisa, pp. 88-105.

Teofilato, Pietro, and E. Pistolesi. A proposito di alcuni teoremi sulla portanza.

L'Aerotecnica, Giornale ed Atti dell 'Associazione Italiana di Aerotecnica, Voi. 7, N.3 (Marzo 1927), Pisa, pp. 141-143.

Teofilato, Pietro. Sul profilo longitudinale dei tubi aerodinamici.

L'Aerotecnica, Giornale ed Atti dell 'Associazione Italiana di Aerotecnica, Voi. 7, N. 5 (Maggio 1927), Pisa, pp. 281-286.

Terminals. Airship terminals.

Aviation, Vol. 22, No. 11 (Mar. 14, 1927), New York, pp. 527-528, ill.

Test engine. See Ware, Marsden: Description of the N. A. C. A. universal test engine and some test results.

Tests. See Gerhardt, W. F. : A manual of flight-test procedure.

- See Stanley, P. H.: Airplane performance testing.

Tetens, H. IV. Internationale Aeronautische Ausstellung Prag.

Zeitschr. Flugt. Motorluftschr., 18. Jahrg., 13. Heft (14. Juli 1927), München, pp.300-302, ill.

Thalau, Karl. Zur Berechnung von Flugzeugtragwerken mit Verbundstielen bzw. vollwandigen Verbundscheiben.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 5. Heft (14. März 1927), München, pp. 105-111, ill., tabls.

Thermometers. See Strother, D. H., and H. N. Eaton: A superheat meter or differential thermometer for airships.

Thom, A. Experiments on the air forces on rotating cylinders.

Techn. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 82.89, diagr., tabls.

Thom, A. The pressures round a cylinder rotating in an air current.

Aeronautical Research Committee, Reports and Memoranda, No. 1082 (Ae. 261), Nov., 1926, London, 1927, pp. 12, tabls., diagr.

Thomas, Lowell. The first world flight. London, Hutchinson and Co.

Thomas, Lowell Jackson. European skyways; the story of a tour of Europe by airplane.

Boston and New York, Houghton Mifflin Company, 1927, pp. xv, 524, ill. *

Thomas, Marius. Transformation de l'aéroport de Croydon-Waddon.

L'Aéronautique, (L'Aéronautique marchande, 6me année, No. 71), 9me année, No. 103 (déc. 1927), Paris, pp. 395-398, ill.

Thomson. Air facts and problems.

London, John Murray, 1927, pp. 255.

- To New Zealand in ten days. Airships will play an important part in

Empire air communications.

Airways, Vol. 3, No. 5 (Jan. 1927), London, pp. 138-139, ill.

Thoret. En avionnette dans les gorges de Condo.

L'Aérophile, 35e année, Nos. 9-10 (ler-15 mai 1927), Paris, p. 145.

Thoret, J. Les avions qui vont sur skis. Une visite à l'aviation Finlandaise. A l'école de l'aéro 0. Y.

L'Aéronautique, 9me année, No. 96 (mai 1927), Paris, pp. 135-136, ill.

Thorne, M. A. See Sparrow, S. W., and M. A. Thorne: Friction of aviation engines.

Thunderbird. The OX-5 " Thunderbird " airplane.

Aviation, Vol. 23, No. 7 (Aug. 15,1927), New York, p. 371, ill.

Tichenor, F. A. Aviation.

Annals, American Academy of Political & Social Science, Vol. 131 (May 1927), Philadelphia, pp. 1-187.

Tie rods. Hartshorn's square section tie rods.

Aero Digest, Vol. 10, No. 5 (May 1927), New York, p. 424, ill.

--Tie rods to tie to.

U. S. Air Services, Vol. 12, No. 7 (July 1927), Washington, D. C, pp. 37-38, diagr.

Tilley, N. N. Inflammation tests: Engine cleaning fluids.

Air Corps Information Circular, Vol. 6, No. 588 (June 25,1927), Washington, pp. 3, diagr., tables.

Tiltman, A. Hessell. Flap gear for aeroplanes.

Automobile Engineer, Vol. 17, No. 225 (Feb. 1927), London, pp. 60-64, ill.

- Flap gear for airplanes. A new scheme in which variation is automatic.

National Advisory Committee for Aeronautics, Technical Memorandums No. 406, April 1927, Washington, pp. 18, ill. From "The Automobile Engineer," February 1927.

Time table. L'indicateur aérien. Official aerial time-table.

Paris, Editions G. Roche d'Estrez, 1er sept. 1927, pp. 124, ill., tables.

Tinker, C. A. Riding the clouds in an air Pullman; the Los Angeles. Popular Mechanics, Vol. 48 (July 1927), Chicago, pp. 100-104, ill.

Tipton, William D. The air force at sea.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, pp. 146, 148,232.

Tisdale, F. S. He put the engine heart into We: C. L. Lawrence, designer of Wright Whirlwind motor.

Mentor, Vol. 15 (Sept. 1927), Springfield, Ohio, p. 59.

6333—28-12

Titterington, Maurice M. The Pioneer earth inductor compass.

Aviation, Vol. 22, No. 25 (June 20,1927), New York, pp. 1356-1357,1400, ill.

Titterington, Morris M. Earth inductor compass used by Lindbergh.

U. S. Air Services, Vol. 12, No. 7 (July, 1927), Washington, D. C, pp. 25-26, 52, ill.

Toronto. See Parkin, J. H.: The new aerodynamic laboratory of the University of Toronto.

Torpedo. The development of torpedo-carrying aircraft. Flight, Vol. 19, No. 51 (Dec. 22, 1927), London, p. 872.

Toulmin, Harry Aubrey. Air service, American expeditionary force, 1918 . . . with an introduction by Jacque Louis Dumesil.

New York, D. Van Nostrand Company, 1927, pp. xxxii, 388, ill.

Touring. See Offermann, E., W. G. Noacke A. R. Weyl: Riesenflugzeuge.

Toussaint, A., et E. Carafoli. Le choix du profil des ailes sustentatrices.

L'Aéronautique, (L'Aérotechnique, 5me année, No. 60), 9me année, No. 1Q3 (déc. 1927), Paris, pp. 383-390, ill.

--Contribution à l'étude de l'écoulement plan des fluides.

La Technique Aéronautique, 18e année, n. s. No. 63 (15 jan. 1927), Paris, pp. 25-27, ill.

- Vérifications expérimentales de la théorie des ailes sustentatrices.

L'Aérophile, 35e année, Nos. 7-8, 9-10 (ler-15 avril, ler-15 mai 1927), Paris, pp. 106-109, 147-152, ill.

Townend, H. C. H., and T. A. Kirkup. Some experiments on a model of a B. A. T. "Bantam" aeroplane, with special reference to spinning accidents. Part II. Experiments on forces and moments (including rudder control.)

Tech. Rep. Aer. Res. Com. 1925-26, London, His Majesty's Stationery Office, 1927, pp. 455-458, diagr., tabls.

Townend, H. C. H. See Lock, C. N. H., H. Bateman, and H. C. H. Townend: An extension of the vortex theory of airscrews with applications to airscrews of small pitch, including experimental results.

- See Lock, C. N. H., H. C. H. Townend, and A. G. Gadd: Wind tunnel

experiments on a symmetrical aerofoil (Gottingen 429 section).

Tracy, Morris De Haven. See Van Every, Dale, and Morris De Haven Tracy: Charles Lindbergh, his life; introduction by Karl A. Bickel.

Traffic rules. See United States: U. S. air traffic rules.

Training. See Breese, C. D. : The training of aircraft apprentices.

- See Burton, Walter E.: A "flying schoolhouse." Goodyear-Zeppelin

Corp. engineers design craft for training military or commercial crews.

—=— See Studley, Barrett: The flight school.

Trans-Atlantic flight. Air not yet conquered: Byrd expedition. Literary Digest, Vol. 94 (July 16,1927), New York, pp. 5-7, ill.

- America and Germany reunited by air.

Literary Digest, Vol. 93 (June 18, 1927), New York, pp. 5-7, ill., map.

- American super-girl and her critics.

Literary Digest, Vol. 95 (Oct. 29, 1927), New York, pp. 52-57.

--The Atlantic flights.

Flight, Vol, 19, No. 36 (Sept. 8, 1927), London, p. 634.

- In defense of trans-Atlantic flights.

Literary Digest, Vol. 95 (Oct. 8, 1927), New York, p. 20.

Trans-Atlantic flight. New York to Paris by air.

Review of Reviews, Vol. 76 (July 1927), New York, pp. 37-38, ill.

- Nungesser and Coli missing in Atlantic flight attempt.

Aviation, Vol. 22, No. 21 (May 16,1927), New York, pp. 1041-1042, ill.

- Our trans-ocean flyers return.

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, pp. 127-128, 234, ill.

- Planes planned for trans-Atlantic service.

Popular Mechanics, Vol. 48 (Sept. 1927), Chicago, pp. 368-369, ill

- Plans progress for trans-Atlantic flight.

Aviation, Vol. 22, No. 19 (May 9, 1927), New York, pp. 989-990, ill.

- Previous great trans-Atlantic flights.

Slipstream, Vol. 8, No. 7 (July 1927), Dayton, Ohio, p. 35.

- Shall we fly the Atlantic?

Scient. Amer., Vol. 137 (Aug. 1927), New York, p. 112.

- Uncle Sam's second flying hop across the pond.

Literary Digest, Vol. 93 (June 25, 1927), New York, pp. 37-48, ill.

Trans-oceanic flight. Aviation progress in the recent trans-oceanic flights. Aero Digest, Vol. 11, No. 3 (Sept. 1927), New York, pp. 274, 359-361.

- Review of recent trans-oceanic flights.

Slipstream, Vol. 8, No. 8 (Aug. 1927), Dayton, Ohio, pp. 7-9, ill.

- Should trans-oceanic flights be regulated

Slipstream, Vol. 8, No. 10 (Oct. 1927), Dayton, Ohio, pp. 7-8. ill.

- Trans-oceanic flying.

Slipstream, Vol. 8, No. 9 (Sept. 1927), Dayton, Ohio, p. 12.

Transport. Air transport discussed by Metropolitan Section.

Mechanical Engineering, Vol. 59, No. 1 (Jan. 1927), New York, pp. 80-81.

Travel Air. The new Travel Air cabin plane.

Aviation, Vol. 22, No. 8 (Feb. 21, 1927), New York, p. 369, ill.

- The Travel Air cabin monoplane.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, p. 66, ill., diagr.

- "Travel Air" commercial airplane—type 5000.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 55, Washington, September 1927, pp. 8, ill.

- Travel Air history.

Aviation, Vol. 23, No. 15 (Oct. 10, 1927), New York, pp. 874-876, ill.

- Pacific flight Travel Air monoplane.

Aero Digest, Vol. 11, No. 3 (Sept. 1927), New York, pp. 294-296, ill., diagr.

- The Travel Air monoplane.

Aero Digest, Vol. 10, No. 2 (Feb. 1927), New York, p. 98, ill.

- The Travel Air transport monoplane.

Aeroplane, Vol. 33, No. 23 (Dec. 7, 1927), London, pp. 764, 766, diagr. Aviation, Vol. 23, No. 15 (Oct. 10, 1927), New York, pp. 878-880, ill., diagr.

Trevelyan, A. See Jones, B. Melvill, and A. Trevelyan: Step-by-step calculations upon the asymmetric movements of stalled aeroplanes.

Truscon. See Hangar doors: Truscon develpps steel hangar doors.

Turbulent flow. See Prandtl, Ludwig: Turbulent flow.

Turnbull airscrew. A promising variable-pitch airscrew.

Aeroplane, Vol. 33, No. 19 (Nov. 9, 1927), London, p. 646, ill.

Turner, C. C. The old flying days.

London, Sampson Low, Marston & Co., 1927, pp. 374, ill.

Turner, Cress well. The regulation of air traffic.

Journ. Roy. Aer. Soc., Vol. 31, No. 197 (May 1927), London, pp.411-419, ill., tabls.

Turner, Nancy Byrd. Ballad of Lucky Lindbergh.

U. S. Air Services, Vol. 12, No. 7 (July 1927), Washington, D. C, p. 15.

Tuzi, Z. A new material for the study of photo-elasticity.

Scientific Papers of the Institute of Physical and Chemical Research, Vol. 7, No. 112 (Oct. 18, 1927), Tokyo, pp. 79-96, diagr., ill.

- Photo-elastic study of stress in heat-treated column.

Scientific Papers of the Institute of Physical and Chemical Research, Vol. 7, No. 114 (Oct. 18, 1927), Tokyo, pp. 104-120, diagrs., ill.

--- Photo-elastic study of stress on a specimen of three dimensional form.

Scientific Papers of the Institute of Physical and Chemical Research, Vol. 7, No. 113 (Oct. 18, 1927), Tokyo, pp. 97-103, diagrs., ill.

Tymms, F., and C. Porri. Air ministry. Flying for air survey photography. London, h. M. Stationery Office, 1927, pp. 46+4, plates.

Types. Experimental types of aircraft.

Flight, Vol. 19, No. 10 (Mar. 10,1927), London, pp. 142-147, ill.

u

Udet. The Udet "Flamingo."

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, p. 536, diagr.

United Cigar Flying Store. Daily sales of United Cigar flying store averaged $200.

Aviation, Vol. 23, No. 19 (Nov. 7, 1927), New York, p. 1113, ill.

United^ States. Air-shy America.

Review of Reviews, Vol. 76 (Aug. 1927), New York, pp. 200-202, ill.

- Americans lead; America lags.

Independent, Vol. 118 (June 18, 1927), Boston, p. 622.

--Les avions civils aux États-Unis.

L'Aéronautique, 9me année, No. 94 (mars 1927), Paris, pp. 85-92, ill.

- Les avions de transport public aux États-Unis.

L'Aéronautique, 9me année, No. 103 (déc. 1927), Paris, pp. 377-382, ill.

- Civil flying statistics in America. Figures for the mail and passenger

services from January-June, 1927.

Flight, Vol. 19, No. 50 (Dec. 15, 1927), London, pp. 849-850.

- Famous flights. The nonstop flight across America.

Popular Aviation, Vol. 1, No. 3 (Oct. 1927), Chicago, pp. 19-21, ill.

- L'éclairage des terrains et des routes aériennes en Amérique,

L'Aéronautique, 9me année, No. 95 (avril 1927), Paris, pp. 117-120, ill.

- La poste aérienne par entreprises privées aux États-Unis.

L'Aéronautique, 9me année, No. 96 (mai 1927), Paris, pp. 155-157, ill.

- U. S. air traffic rules.

Popular Aviation, Vol. 1, No. 3 (Oct. 1927), Chicago, pp. 26-28, ill.

- Vooruitgang in het Amerikaansche luchtpostvervoer.

Het Vliegveld, Ilde Jaarg., No. 2 (Feb. 1927), Amsterdam, p. 61.

- See Commercial aeronautics: A map drawing of the United States airways

as of Dec. 31, 1927.

- See Parachutes: Sauvetages par parachute aux Etats-Unis.

United States. See Santa Maria: II volo del "Santa Maria". Dall'America latina all' America anglosassone.

United States Bureau of Standards. See Safety code: Sectional Committee for aeronautical safety code. Revision of aeronautical safety code.

United States Department of Commerce. Air commerce regulations. Effective December 31, 1926.

Washington, Government Printing Office, 1927, pp. 49.

- Proposed handbook for airplane designers (commercial), October, 1927.

Washington, Government Printing Office, 1927, pp. 35, tabls., diagrs.

United States Department of State. The flight of Captain Charles A. Lindbergh from New York to Paris, May 20-21, 1927. As compiled from the. official records of the Department of State.

Washington, Government Printing Office, 1927, pp. 43.

United States Department of the Navy. Jaarlijksch rapport van den Ameri-kaanschen marinevliegdienst.

Het Vliegveld, Ude Jaarg., No. 3 (Maart 1927), Amsterdam, pp. 108-110.

U. S. S. Lexington. Highest powered naval vessel in the world.

U. S. Air Services, Vol. 12, No. 11 (Nov. 1927), Washington, D. C, pp. 22-23, ill.

- World's largest naval vessel.

St. Nicholas, Vol. 54 (Oct. 1927), New York, pp. 995-996, ill.

United States Navy. Naval aviation training.

Popular Aviation, Vol. 1, No. 1 (Dec. 1927), Chicago, pp. 16-17, ill.

—— See Schwengler, Johannes: Der Luftschiff-Wettbewerb der U. S. Navy.

United States to Canada flight. U. S. to Canada flight requirements, Aviation, Vol. 23, No. 9 (Aug. 29,1927), New York, p, 480.

University of Michigan. See Guggenheim, Daniel: Guggenheim gift to Univ. of Michigan.

Upson, Ralph, H. Meteorological aspects of the 1927 National Balloon Race. Aviation, Vol. 22, No. 25 (June 20,1927), New York, pp. 1382-1384, map.

Ursinus, O. Flug-Modellbau-Unterricht. Eine praktische Anleitung für den Modellbau und Einführung in den Modellsport. Frankfurt a. M., 1927, pp. 50, ill.

Uruguay. See Atlantic: Les grands raids transatlantiques.

Utah. Utah flying club.

Popular Aviation, Vol. 1, No. 5 (Dec. 1925), Chicago, p. 24, ill.

Utility. Utility of the aeroplane recognized.

Flight, Vol. 19, No. 14 (Apr. 7,1927), London, p. 202, ill.

V

VE-7. See Rhode, R. V.: Pressure distribution on wing ribs of the VE-7 and TS airplane in flight.

Vallecchi, G. La navigazione aerea commerciale.

Sindacato Nazionale Fasoista Ingegneri, Ano 2, N. 1 (Gen. 1927), pp 4-9, ill

Valves. See Henshaw, P. B.: Valve steels.

Van Every, Dale, and Morris De Haven Tracy. Charles Lindbergh, his life, introduced by Karl A. Bickel.

New York, London, D. Appleton and Company, 1927, pp. 235, ill., port.

Van Muffling, Adrian. Air transportation and colonization in South America. Aero Digest, Vol. 10, No. 5 (May|1927), New York, pp. 374-375, 483, ill., map.

Van Muffling, Adrian. A victorious year of American aeronautics—1927. Aero Digest, Vol. ii, No. 6 (Dec. 1927), New York, pp. 642-643, 762, tabls.

Van Orman, Ward, T. The flight of the Goodyear V in the 1927 National Balloon Race.

u. S. Air Services, Vol. 12, No. 8 (Aug. 1927), Washington, D. C, pp. 45-47, map.

Van Zandt, J. P. Aircraft resources.

Journal of the Western Society Engineers, Vol. 22, No. 5 (June 1927), Chicago, pp. 164-169.

Varnishes. See Britton, II. T. S.: Aero dopes and varnishes.

Vaulx, Comte de la. Un tour d'Europe en avion.

L'Aérophile, 35e année, Nos. 13-14 (ler-15 juil. 1927), Paris, pp. 200-203, ill.

Verduijand, Abel. Les colossales perspectives d'avenir de l'aviation commer-iale allemande.

L'Aérophile, 35e année, Nos. 1-2 (ler-15 Jan. 1927), Paris, pp. 2-7, ill.

- Utilisation des statistiques météorologiques pour les avantprojets de lignes

aériennes à service quotidien.

L'Aéronautique, 9me année, No. 100 (sept. 1927), Paris, pp. 291-294.

Verduzio, R. L'installazione più conveniente per i motori laterali sui velivoli L'Aerotecnica, Giornale ed Atti dell'Associazione Italiana di Aerotecnica, Voi. 7, N. 3 (Marzo 1927), Pisa, pp. 127-135, ill.

Verdy. L'aviation au Pérou.

L'Aérophile, 35e année, Nos. 9-10 (ler-15 mai 1927), Paris, pp. 143-145, ill.

Vickers. Metal aircraft construction at Vickers. Some interesting new forms developed.

National Advisory Committee for Aeronautics, Technical Memorandums No. 440, December 1927, Washington, pp. 5, ill. From "Flight" September 15, 1927.

Vickrey, C. C. Aviation insurance.

Aviation, Vol. 23, No. 26 (Dec. 26, 1927), New York, pp. 1520-1521.

Ville, Eloi. See Blanchet, Georges: Aviateurs contemporains. Quelques pilotes de la ligne Latécoère : Casablanca-Dakar.

"Ville de Paris." The "Ville de Paris."

Aviation, Vol. 23, No. 13 (Sept. 26,1927), New York, pp. 718-722, ill.

Vinci, Leonardo da. See Giacomelli, R. : Leonardo da Vinci e il volo meccanico.

- See Mecozzi, Amedeo: Il volo degli uccelli in due recenti publicazioni

vinciane.

Viti, A. See Eula, A., e A. Viti: Il calcolo dell'autonomia degli aeroplani ei recenti voli transoceanici.

Vivent, Jacques. Enquete technique sur l'aviation commerciale. Le Réseau aérien intérieur.

La Technique Aéronautique, 18e année, n. s. No. 74 (15 dêc. 1927), Paris, pp.-310-317. Vojenska. A Czechoslovak all-metal two-seater. S. 16.

Flight, Vol. 19, No. 2 (Jan. 13, 1927), London, pp. 18-20, ill., diagr.

- Vojenska-Smolik S. 16 airplane. All metal long-distance observation

biplane.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 34, Washington, March 1927, pp. 5, ill. From "Flight", January 13, 1927.

Von Blon, John L. ' Alaska is mapped from the air.

Scient. Amer., Vol. 136 (May 1927), New York, pp. 303-305. ill.

Von Blon, John L. Mapping Alaska from the air. , >

Flight, Vol. 19, No. 12 (Mar. 24, 1927), London, pp. 172-175, ill.

Vorobeitchik. Sur le vol horizontal d'un avion ä grand rayon d'action. c. R. Acad. Sei., T. 184, No. 9 (28 fev. 1927), Paris, pp. 514-516.

Vortices. The Wilbur Wright Memorial Lecture. The generation of vortices in fluids of small viscosity.

Flight, Vol. 19, No. 20 (May 19, 1927), London, p. 318.

- See Prandtl, Ludwig: The generation of vortices in fluids of small viscosity.

Vought. Chance Vought products maintain high standard of quality and performance.

Aviation, Vol. 22, No. 24 (June 13, 1927), New York, pp. 1278-1280, ill.

- The Vought "Corsair."

Aero Digest, Vol. 10, No. 5 (May 1927), New York, pp. 416-417, ill., diagr. Aviation, Vol. 23, No. 26 (Dec. 26,1927), New York, pp. 1518-1519, ill.

- The Vought Corsair naval airplane.

Aviation, Vol. 22, No. 18 (May 2, 1927), New York, pp. 934-940, ill.

- Vought Corsair sets world's speed record.

Aviation, Vol. 22, No. 25 (June 20, 1927), New York, p. 1384.

- Vought patrol planes have been delivered to Coast Guard.

TJ. S. Air Services, Vol. 12, No. 4 (Apr. 1927), Washington, D. O., p. 33, ill.

Vyvyan, Vyell. Seaplanes or aeroplanes?

Airways, Vol. 3, No. 5 (Jan. 1927), London, p. 159, ill.

w

W. Z. X. N. 1. A Polish aeroplane.

Aeroplane, Vol. 32, No. 6 (Feb. 9, 1927), London, p. 154, ill.

Waco Ten. ox5 engined Waco-Ten commercial airplane.

Aero Digest, Vol. 10, No. 5 (May 1927), New York, p. 426, ill., diagr.

- Waco 10 with Caminez engine tested for fuel consumption.

Aviation, Vol. 23, No. 16 (Oct. 17,1927), New York, p. 941.

Wada, Koroku, and Syödirö Nisikawa. Measurement of variable velocity relative to air with pitot-static tube.

Report of the Aeronautical Research Institute, Tokyo Imperial University, No. 27, (Vol. 2, 13), (November 1927), Tokyo, pp. 327-396, ill., diagrs., tables.

Wade, L. Aerial globe trotting.

Annals, American Academy of Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 86-93.

Wakefield, Charles. Sir Charles Wakefield survey flight round Africa.

Flight, Vol. 19, No. 45 (Nov. 10, 1927), London, pp. 776-778, ill.

Walcott, Charles Doolittle. Dr. Charles Doolittle Walcott. Aviation, Vol. 22, No. 8 (Feb. 21, 1927), New York, p. 370, ill.

Wales, James Albert. "Local for Europe—Bermuda first stop."

Aero Digest, Vol. 11, No. 2 (Aug. 1927), New York, pp. 138, 144, ill.

Walker, C. C. Climbing efficiency of aircraft.

Aircraft Engineer suppl. to Flight, Vol. 19, No. 4 (Jan. 27, 1927), London, pp. 46a-46e, diagr. National Advisory Committee for Aeronautics, Technical Memorandums No. 415, June 1927, Washington, pp. 9, ill. From "Flight," January 27, 1927.

- Handicap formulae.

Aircraft Engineer suppl. to Flight, Vol. 19, No. 38 (Sept. 22, 1927), London, pp. 668a-668d.

- Monoplanes or biplanes?

Airways, Vol. 3, No. 11 (July 1927), London, p. 358.

Walker, Gilbert. See Clayton, H. Helm: World weather records.

Walker, Gilbert T. The flapping flight of birds. II.

Journ. Roy. Aër. Soc., Vol. 31, No. 196 (Apr. 1927), London, pp. 337-342.

Wall interference. See Higgins, George J. : Wall interference in closed type wind tunnels.

Walter. Une visite chez Walter. La construction des moteurs refroidis par l'air en tchécoslovaque.

L'Aéronautique, 9me année, No. 98 (juil. 1927), Paris, pp. 227-229, ill.

Walton, Francis" D. Santa Claus comes to the Air Corps. The formal opening of Wright Field.

Aero Digest, Vol. 11, No. 5 (Nov. 1927), New York, pp. 510-511, 619, ill.

Ward, Roswell H. An outline of oil engine development for aircraft. Aviation, Vol. 22, No. 16 (Apr. 18, 1927), New York, pp. 773-775, ill., diagr.

Ware, Marsden. Description of the N. A. C. A. universal test engine and some test results.

National Advisory Committee for Aeronautics, Report No. 250, February 11, 1927, Washington, Government Printing Office, 1927, pp. 15, ill.

Warner, Edward Pearson, Airplane design; aerodynamics.

New York, McGraw-Hill Book Company, inc., 1927, pp. xi, 598, ill., diagrs.

Warner, Edward Pearson, and Mac Short. Approximations for column effect in airplane wing spars.

National Advisory Committee for Aeronautics, Report No. 251, April 5, 1927, Washington Government Printing Office, 1927, pp. 20, diagrs.

Warner, Edward Pearson. Maritime aviation.

Slipstream, Vol. 8, No. 5 (May 1927), Dayton, Ohio, pp. 10-11, ill.

- Service aviation, aeronautical engineering and commercial aviation.

Journ. Soc. Automotive- Engineers, Vol. 21, No. 2 (Aug. 1927), New York, pp. 151-154.

--Wright Field—A symbol.

Slipstream, Vol. 8, No. 10 (Oct. 1927), Dayton, Ohio, p. 30, ill.

Washington, D. C. Final information on the aircraft display, Washington, •'• May 2-6, 1927.

Aviation, Vol. 22, No. 18 (May 2, 1927), New York, pp. 890, 896.

Wasp. Commercial applications of the "Wasp" engine.

U. S. Air Services, Vol. 12, No. 11 (Nov. 1927), Washington, D. C, pp. 24-25, ill.

- The 425 h. p. Pratt and Whitney Wasp engine.

Aero Digest, Vol. 11, No. 3 (Sept. 1927), New York, pp. 298, 300, ill., diagr.

- New GE supercharger.

Aero Digest, Vol. 10, No. 1 (Jan. 1927), New York, p. 40, ill.

- Pratt & Whitney aircraft Corporation starts big production of "Wasp."

Slipstream, Vol, 8, No. 4 (Apr. 1927), Dayton, Ohio, p. 17, ill.

Watter, Michael. Airplane.

Annals, American Academy Political and Social Science, Vol. 131 (May 1927), Philadelphia pp. 7-13.

—:— Comparison of airplanes.

Aero Digest, Vol. 10, No. 1 (Jan. 1927), New York, pp. 12, 74, diagr. '

- Determination of available horse power.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, pp. 48, 50, tabls.

- Engineering in aircraft.

Aero Digest, Vol. 10, Nos. 2-3 (Feb.-Mar. 1927), New York.fpp. 90,160, 174, 252-253,

Watter, Michael. Engineering aspects of Lindbergh's trans-Atlantic flight. Aero Digest, Vol. 11, No. 4 (Oct. 1927), New York, pp. 396-397, 483-485.

- Power and propulsion at altitudes.

Aero Digest. Vol. 10, No. 5 (May 1927), New York, pp. 378-379, 483, diagr.

- The slotted wing.

Aero Digest, Vol. 11, No. 6 (Dec. 1927), New York, pp. 654-655.

- Super-aviation.

Aero Digest, Vol. 10, No. 4 (Apr. 1927), New York, pp. 282, 352.

Wead, F. W. Air-cooled fighters or water-cooled?

Aviation, Vol. 22, No. 12 (Mar. 21,1927), New York, pp. 565-567, ill.

- Airplane racing and record chasing.

Proc. U. S. Nav. Inst., Vol. 53, No. 7 (July 1927), Annapolis, pp. 782-786.

- Formation flying.

U. S. Air Service, Vol. 12, No. 10 (Oct. 1927), Washington, D. C, pp. 35-38, ill.

- Meeting service needs. Forming of test units might tend to shorten gap

existing between those that design and build aircraft and those that operate them.

Aviation, Vol. 23, No. 1 (July 4, 1927), New York, pp. 22-23.

- Next step, superchargers?

Aviation, Vol. 23, No. 12 (Sept. 19, 1927), New York, pp. 671-673, ill.

- The Schneider trophy.

Aviation, Vol. 22, No. 23 (June 6, 1927), New York, pp. 1226-1228.

Weather Bureau. See Clephane, Douglas W.: Weather Bureau aid in ocean flying.

Weather conditions. See Duke, Donald G.: Mean weather conditions.

Weaver, Edgar R. Airplane brakes.

Slipstream, Vol. 8, No. 11 (Nov. 1927), Dayton, Ohio, pp. 25-27, ill., diagr.

Webster.: 'See Schneider cup: La Grande-Bretagne remporte la Coupe Schneider. Webster, sur supermarine S-5, a moteur Napier, couvre 350 km a 453 km a l'heure.

Weick, Fred E. Study of open jet wind tunnel cones.

National Advisory Committee for Aeronautics, Technical Notes No. 260, Washington, August 1927, pp. 15, ill., diagrs.

Weidinger, Hanns. Drag measurements on a Junkers wing section. Application of the Betz method to the results of comparative tests made on a model and on an airplane in flight.

National Advisory Committee for Aeronautics, Technical Memorandums No. 428, September 1927, Washington, pp. 47, ill., tables.

From "Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt" December 1926.

Weiser. See Blanchet, Georges: Aviateurs contemporains. Le lieutenant Challe et le capitaine Weiser.

Weiss. See Alexander: Le périple de l'Europe et la route d'Alexandre.

Weiss, Pierre. Lindbergh.

L'Aérophile, 35e année, Nos. 11-12 (ler-15 juin 1927), Paris, pp. 162-163, port.

Welding. Welding airplanes.

Canadian Engineer, Vol. 53, No. 24 (Dec. 13, 1927), Toronto, p. 32.

- Welding in airplanes.

Aviation, Vol. 23, No. 26 (Dec. 26, 1927), New York, pp. 1522-1525, ill.

Welter, G. Beitrag zum Preisausschreiben der Wissenschaftlichen Gesellschaft für Luftfahrt E. V. Kennwort: Die Elastizitätsgrenze.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 18. Heft (28. Sept. 1927), München, pp. 418-438, ill., diagrs.

Wells, L. Around the world in twenty-eight days.

Travel, Vol. 48 (Jan. 1927), New York, pp. 39-40, ill., map.

Wemp, B., and A. H. Munday. Canadian pilots in the Great War. Canada Magazine, Vol. 68 (Oct. 1927), Toronto, pp. 6-9, ill.

WexNtdler, August. Das Problem der technischen Wetterbeeinflussung. Hamburg, Verlag von Henri Grand, 1927, pp. 107, ill.

Wehster, Oscar. Airplane landing field lighting.

Aviation, Vol. 22, No. 9 (Feb. 28, 1927), New York, pp. 410-412, ill., diagr.

---Lighting of airplane landing fields.

American City, Vol. 36 (Mar. 1927), New York, pp. 320-323, ill., diagr.

West Indies. On aircraft in the West Indies.

Aeroplane, Vol. 32, No. 5 (Feb. 2,1927), London, pp. 112-114.

Westland. The Westland "Widgeon III."

Flight, Vol. 19, No. 30 (July 28, 1927), London, pp. 513-518, ill., diagr.

- The Westland "Widgeon III" "Cirrus II" or "Genet II" engine.

National Advisory Committee for Aeronautics, Aircraft Circulars No. 53, Washington, August 1927, pp. 8, ill. From "Flight," July 28, 1927.

Wbttchinkine, N., S. Kamener, N. Tchensov. Dynamique du vol (en russe). Travaux de l'Institut Central Aerohydrodynamique de Moscou, fac. No. 26.

Weyerbacher, R. D. Common carrier hops off.

Saturday Evening Post, Vol. 200 (July 30, 1927), Philadelphia, pp. 6-7, ill

Weyl, Alfred Richard. Die Flugwaffe in Krieg und Frieden.

Die Luftwacht, Heft 4, April 1927, Berlin, pp. 183-190.

--See Offermann, E., W. G. Noack e A. R. Weyl: Riesenflugzeuge.

Wharton, M. He maps the earth. Interview with W. C. Brubaker.

Sunset, Vol 59 (Dec. 1927), San Francisco, pp. 47-48.

Whedon, William E. See Gardiner, Arthur W., and William E. Whedon: The relative performance obtained with several methods of control of an overcompressed engine using gasoline.

Wheels. See Baumhauer, A. G. von: The resistance of aeroplane wheels.

- See Bendix: The Bendix wheel and brake.

--See Guglielmetti, A., e L. Ferrari: II comportamento statico e dinamico

delle ruote unificate per aeroplane

Whirl theory. See Helmbold, H. B., und H. Lerbs: Modellversuche zu Nachprüfung der Treibschrauben-Wirbeltheorie.

Whirlwind engine. See Wright whirlwind engines.

Whirlwinds. See Dines, L. H. G.: Dynamics of whirlwinds.

White, J. H. This farmer does his errands in his own airplane.

American Magazine, Vol. 103 (May 1927), Springfield, Ohio, pp. 67-68.

White, Karl H. Manufacture of airplanes.

Aero Digest, Vol 11, No. 2 (Aug. 1927), New York, pp. 176, 178, 233.

Whiteleather, M. K. Europe in the air.

Outlook, Vol. 147 (Oct. 5, 1927), New York, pp. 147-148, ill.

"Whistler," The Whistler.

Aero Digest, Vol. 10, No. 4 (Apr. 1927), New York, p. 304, ill.

Widgery, W. Wind tunnels.

Journ. Roy. Aer. Soc., Vol. 31, No. 200 (Aug. 1927), London, pp. 799-806.

Wiederhold, Hasso. Aerodynamische Untersuchungen an einem zweimotorigen Verkehrsdoppeldecker.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 1. lieft (14. Jan. 1927), München, pp. 7-11, ill.

Wieland,K. Untersuchungen an einem neuartigen Düsenflügel.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 15. Heft (16. Aug. 1927), München pp. 346-350, 111., diagrs., tables.

WiESELSBERGER, C. Über den Lufturderstand bei gleichzeitiger Rotation des Versuchskörpers.

Physikalische Zeitschrift, 28 Jahrg., Nr. 2 (15. Jan. 1927), Leipzig, 84-88 ill.

WiLKS, Russell. When Ford went up.

Popular Aviation, Vol. 1, No. 5 (Dec. 1925), Chicago, pp. 7-10, ill.

Williams, D. H. See Batson. A. S., D. H. Williams, and A. S. Haliiday: Experiments on a model of a Fokker (F. VII) monoplane wing.

—— See Bryant, L. W., and D. H. Williams: An investigation of the flow of air around an aerofoil of infinite span.

- See Irving, H. B., A. S. Batson, and D. H. Williams: Model experiments

on R. A. F. 31 aerofoil with Handley Page slots.

Williams, Jerome. Air-graft and politics.

Slipstream, Vol. 8, No. 2 (Feb. 1927); Dayton, Ohio, pp. 8-9, 30-31, ill.

Williams, S. G. Metals and their heat treatment.

Journ. Roy. Aer. Soc, Vol. 31, No. 198 (June 1927), London, pp. 602-613.

Wilson, E. E. American aircooled aircraft engines

Aero Digest, Vol. 11, No. 3 (Sept. 1927), New York, pp. 272, 358-359, ill.

- Design reactions from the Spokane pursuit races.

Aviation, Vol. 23, No. 16 (Oct. 17, 1927), New York, pp. 936-937.

Wilson, E. E. New Navy aircraft.

U. S. Air Services, Vol. 12, No. 5 (May 1927), Washington, D. C, pp. 19-21, ill.

- The recent air records.

Aviation, Vol. 22, No. 22 (May 30,1927), New York, pp. 1131-1132.

Wimperis, H. E. Progress in aeronautical research in Great Britain. Nature, Vol. 120, No. 3034 (Dec. 24,1927), London, pp. 923-925. Paper presented to the International Congress at Rome, October 1927.

Wind. See H. W. H.: Wind drift.

Wind tunnels. Wind tunnel tests of DH-4B model fitted with various fins and rudders.

Air Corps Information Circular, Vol. 7, No. 603 (Nov. 1, 1927), Washington, pp. 11, diagrs., tables.

- See Bertozzi-Olmeda, F.: Alcune ricerche sull'impiego di reti come schermi

aerodinamici.

- See Burgers, J. M.: Berekening van een ventilator-schroef met constante

circulatie ora de bladdoorsnede, ten gebruike in een windkanaal.

- See Fales, E. N.: The wind tunnel and its contribution to aviation.

- See Higgins, George J.: The effect of the walls in closed type wind tunnels.

- See Higgins, George J.: Wall interference in closed type wind tunnels.

Wind tunnels. See Jacobs, Eastman N.: Work in the variable density wind tunnel of the N. A. C. A.

---See Parkin, J. H.: The new aerodynamic laboratory of the University of

Toronto.

- See Smith, R. H.: Method of correcting wind tunnel data for omitted parts

of airplane models.

- See Weick, Fred E. : Study of open jet wind tunnel cones.

- See Widgery, W.: Wind tunnels.

Windmills. Grupos electrógenos movidos por molinos de viento. Ibérica, Año 14, Num. 659 (1 enero 1927), Barcelona, pp. 8-9, ill.

Wings. Applying wing fabric.

Scient. Amer., Vol. 136 (May 1927), New York, p. 345, diagr.

--Concerning wing-flutter.

Aeroplane, Vol. 32, No. 8 (Feb. 23, 1927), London, pp. 208-210, diagr.

- Slotted wings for airplane safety.

Literary Digest, Vol. 95 (Dec. 24,1927), New York, p. 19, ill.

---See Bailey, N. R.: Progress report on the study of torsion on wing framework.

--See Fairbanks, A. J.: Pressure distribution tests on PW-9 wing models

showing effects of biplane interference.

- See Friel, E. C: Design of tapered internally braced wings.

- See "Gloster" high lift biplane wings.

----- See Hemke, Paul E. : Drag of wings with end plates.

- See Irving, H. B., and A. S. Batson: The distribution of pressure over a

biplane with wings of unequal chord and span.

- See Koning, C, en H. J. van der Maas: Experiments on the action of the

ailerons of a thick tapered wing.

- See Lee, John G. : Metal wing spars,

----- See Orian, Françoise: Calcul d'un longeron d'aile.

--See Rizzo, Frank: Precision of wing sections and consequent aerodynamic effects.

--See Seiferth, R.: Investigation of a wing with an auxiliary upper part.

--See Toussaint, A., et E. Carafoli: Le choix du profil des ailes sustentatrices.

— See Toussaint, A., et E. Carafoli: Vérifications expérimentales de la théorie des ailes sustentatrices.

- See Watter, Michael: The slotted wing. Winter. See Stinson, Edward A. : Flying in winter.

Winters, S. R. Guiding airplanes by radio beacons.

Popular Aviation, Vol. 1, No. 4 (Nov. 1927), Chicago, pp. 23-26, ill.

- Life-saving airplanes for carrying life-lines to ships in distress.

Scient. Amer., Vol. 137 (Dec. 1927), New York, pp. 497-499, ill.

Wireless. See T. S. F.: Équipements de T. S. F.

Wissenschaftlichen Gesselschaft fur Luftfahrt. Berichte und Abhandlungen der Wissenschaftlichen Gesselschaft fur Luftfahrt. München und Berlin, R. Oldenbourg, pp. 154, ill.

- Grosser Luftverkehrs-Atlas von Europa, Jahrgang 1927.

Berlin, Verlag für Börsen- und Finanzliteratur A. G. [1927].

- Provisorisches Fliegerhandbuch. Zusammengestellt und herausgegeben

unter Benutzung des Materials des "Grosser Luftverkehrs-Atlas von Europa" von der Wissenschaftlichen Gesellschaft für Luftfahrt, E. V. (WGL).

Berlin W 35.

---Verlängerung des Preisausschreibens der Wissenschaftlichen Gesellschaft

für Luftfahrt E. V.

Zeitschr. Flugt. Motorluftsch., 18. Jahrg., 8. Heft (28. April 1927), Mümchen, pp. 195-196.

--See Scheve, G. von: Bericht über den Verlauf der XVI. Ordentlichen

Mitglieder-Versammlung der Wissenschaftlichen Gesellschaft für Luftfahrt E. V. (WGL) vom 16. bis 19. September 1927 in Wiesbaden.

- See Welter, G.: Beitrag zum Preisausschreiben der Wissenschaftlichen

Gesellschaft für Luftfahrt E. V. Kennwort: Die Elastizitätsgrenze.

Witte, H. Das neue Rohrbach-Verkehrs-Flugboot "Rocco."

Motorwagen, 30. Jahrg., Heft 13 (10. Mai 1927), Berlin, pp. 300-302.

Witte, M. H. De metalen Rohrbach vliegtuigen de vliegboot "Robbe." Het Vliegveld, 11 de Jaarg., No. 1 (Jan. 1927), Amsterdam, pp. 9-12, ill.

Wolf, H. Naar het Oosten!

Het Vliegveld, Ilde Jaarg., No. 3 (Maart 1927), Amsterdam, pp. 97-100, ill.

Wolff, E. B. Bij het jubileum van "Het Vliegveld."

H«t Vliegveld, Ilde Jaarg., No. 1 (Jan. 1927), Amsterdam, p. 6, port.

Wolff, E. B., and C. Koning. Discussion of the results of the boundary-layer tests of an airfoil fitted with rotary cylinders.

National Advisory Committee for Aeronautics, Technical Memorandums No. 434, August 1927, Washington, pp. 11, ill.

Report A 130 of the Rijks-Studiedienst voor de Luchtvaart," Amsterdam. Reprint from "De Ingenieur," December 25, 1926.

--Discussion of the results of the tests on the boundary layer of the aerofoil

with rotating cylinder.

Verslagen en Verhandelingen van den Rijks-Studiedienst voor de Luchtvaart, Rapport A 130, Deel 4,1927, Amsterdam, pp. 67-79.

- Further experiments on the influence of a rotating cylinder accommodated

in a wing-section.

Verslagen en Verhandelingen van den Rijks-Studiedienst voor de Luchtvaart, Rapport A 105, Deel 4,1927, Amsterdam, pp. 1-36, ill., diagrs., tables.

Wolff, E. B., en L. J. G. van Ewijk. Mechanical properties of some materials, that are used for the construction of aeroplanes.

Verslagen en Verhandelingen van den Rijks-Studiedienst voor de Luchtvaart, Rapport M 219, Deel 4,1927, Amsterdam, pp. 81-97, tables.

Wood, R. McKinnon. See Anderson, E. F., L. E. Caygill, and R. McKinnon Wood: Full-scale and model measurements of lift and drag of Bristol Fighter with R. A. F. 32 wings.

Wood, Robert Schofield. See Fife, George Buchanan: Lindbergh, the lone eagle, his life and achievements, with a valuable chapter on airplane navigation by Captain Robert Schofield Wood.

Woodring, Irving A. Lieut. Irving A. Woodring wins Mitchell trophy pursuit race.

Aviation, Vol. 23, No. 17 (Oct. 24, 1927), New York, p. 1009.

Woolaroc. Woolaroc wins Dole race.

Popular Aviation, Vol. 1, No. 3 (Oct. 1927), Chicago, pp. 5-8, ill.

World flights. Beating Jules Verne by sixty-five days.

Literary Digest, Vol. 94 (July 2, 1927), New York, pp. 62-63.

- Riddles of the world flight's.

Aero Field, Vol. 2, No. 4 (July 1927), Sutton Coldfield, England, pp. 85-86, map.

- Thrill of an air cruise around the world.

Literary Digest, Vol. 93 (May 21, 1927), New York, pp. 66-70.

Wright. Wright air field dedicated.

Popular Aviation, Vol. 1, No. 5 (Dec. 1927), Chicago, p. 26.

--See Dinger, H. C: Die Entwicklung der luftgekühlten Wright-Flugmo-

toren.

Wright, Orville. Our early flying machine developments.

Slipstream, Vol. 8, No. 9 (Sept. 1927), Dayton, Ohio, pp. 15-16, ill.

Wright, S. J. See Gough, H. J., D. Hanson, and S. J. Wright: The behaviour of single crystals of aluminum under static and repeated stresses.

- See Gough, H. J., S. J. Wright, and D. Hanson: An experiment to determine if slip can be detected during the unloading portion of a cycle of repeated tensile stresses.

Wright, T. P. Aircraft engineering.

Annals, American Academy Political and Social Science, Vol. 131 (May 1927), Philadelphia, pp. 27-33.

- The durability of metal propellers.

U. S. Air Services, Vol. 12, No. 2 (Feb. 1927), Washington, D. C, pp. 39-40.

Wright brothers. Memorial to Wright brothers at Kitty Hawk.

U. S. Air Services, Vol. 12, No. 9 (Sept. 1927), Washington, D. C, p. 40.

--See History: Invention, transportation, the flying machine.

Wright Field. America's greatest air station.

Slipstream, Vol. 8, No. 8 (Aug. 1927), Dayton, Ohio, pp. 14, 26, ill.

- Dedication of Wright Field.

U. S. Air Services, Vol. 12, No 11 (Nov. 1927), Washington, D. C, pp 32-33, ill.

- Wright Field dedicated.

Aviation, Vol. 23, No. 17 (Oct. 24, 1927), New York, pp. 995-997, ill. Slipstream, Vol. 8, No. 11 (Nov. 1927), Dayton, Ohio, pp. 17, 32, ill.

- See Davison, F. Trubee: The place Wright Field fills.

---See Gott, Edgar N.: What Wright Field means to the manufacturer.

- See Patrick, Mason M.: Wright Field—Pride of the Air Corps.

--See Walton, Francis D.: Santa Claus comes to the Air Corps. The

formal opening of Wright Field.

---- See Warner, Edward Pearson: Wright Field—A symbol.

Wright memorial. In honor of the Wrights.

Slipstream, Vol. 8, No. 11 (Nov. 1927), Dayton, Ohio, pp. 9-10, ill.

Wright Whirlwind engine. An Englishman's experience of the Wright Whirlwind engine.

Aeroplane, Vol. 33, No. 25 (Dec. 21, 1927), London, pp. 824,826.

Wright Whirlwind engine. La genèse du moteur de Lindbergh et de Cham-berlin, du Lawrence J.l au Wright-Whirlwind J.5.

L'Aéronautique, 9me année, No. 97 (juin 1927), Paris, p. 172.

- History and development of Wright Whirlwind.

Slipstream, Vol. 8, No. 8 (Aug. 1927), Dayton, Ohio, p. 10.

- Lindbergh's Wright Whirlwind a result of seven years' development.

Aviation, Vol. 22, No. 25 (June 20,1927), New York, pp. 1358-1359, 1396, ill.

- The new duration record. Some particulars of the equipment used.

Flight, Vol. 19, No. 18 (May 5, 1927), London, p. 271, ill. Chamberlin and Acosta. 51 hrs. 11 min.

—■— Performances of Whirlwind engines.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, pp. 60, diagr.

- Record of Whirlwind engines during 1926.

Aero Digest, Vol. 10, No. 1 (Jan. 1927), New York, p. 46.

- Safety of Wright Whirlwind engines.

Aero Digest, Vol. 11, No. 1 (July 1927), New York, p. 66.

- Whirlwind engines in commercial flying.

Aviation, Vol. 22, No. 1 (Jan. 3, 1927), New York, pp. 16-17, ill.

- The Wright Whirlwind J-5C engine.

Aero Digest, Vol. 10, No. 6 (June 1927), New York, p. 540, ill.

- The Wright J.-5 "Whirlwind." An American engine which has made

history.

Flight, Vol. 19, No. 24 (June 16, 1927), London, pp. 390-392, ill.

--Wright Whirlwinds have played important parts in making aeronautical

history.

Aviation, Vol. 22, No. 26 (June 27, 1927), New York, pp. 1432-1433, 1449, ill.

--Wright "Whirlwinds" make remarkable record in 1926.

TJ. S. Air Services, Vol. 12, No. 1 (Jan. 1927), Washington, D. C, p. 22.

- See Beatty, Lee M.: The Wright Whirlwind Engine production methods.

- See Beatty, Lee M.: Wright Whirlwind engine production.

--See Bruno, H. A.: The Wright Whirlwind motor has remarkable record.

- See 'Dinger, H. C: Die Entwicklung der luftgekühlten Wright-Flug-

motoren.

--See Duston, F. C: The Wright Whirlwind Engine.

--See Jones, E. T.: Fuel for the Wright "Whirlwind."

--See Taylor, P. B.: The carburetor air heater for the Wright Whirlwind

engine.

- See Whirlwind engine.

Wrightson, Chas. T. Varney air mail service hits stride.

Aviation, Vol. 22, No. 24 (June 13, 1927), New York, p. 1281, ill.

Wronsky. Het Duitsche luchtverkeer.

Het Vliegveld, Ilde Jaarg., No. 4 (April 1927), Amsterdam, pp. 131-134.

Wronsky. Martin. Air traffic in Germany.

Journ. Koy. Aer. Soc, Vol. 31, No. 199 (July 1927), London, pp. 690-714, ill., diagr., map.

- The leader of German civil aviation.

Aeroplane, Vol. 32, No. 5 (Feb. 2, 1927), London, pp. 126-127, ill.

Yackey. Yackey monoplane.

Aero Digest, Vol. 11, No. 4 (Oct. 1927), New York, p. 420, ill., diagr.

Young, A. P. Magnetos. !

Journ. Roy. Aer. Soc, Vol. 31, -No. 200 (Aug. 1927), London, pp. 786-790.

Young, Clarence M. Civil aeronautics in America.

Aero Digest, Vo.l 11, No. 6 (Dec. 1927), New York, pp. 644-652, ill., map, tabls.

- Commercial wings.

U. S. Air Services, Vol. 12, No, 5 (May 1927), Washington, D. C, pp. 23-26, ill.

Young, Clement A. An A-B-C of aviation.

Popular Aviation, Vol. 1, No. 1 (Aug. 1927), Chicago, pp. 23-24, ill.

Zahm, Albert Francis. Flow and drag formulas for simple quadrics.

National Advisory Committee for Aeronautics, Report No. 253, April 18,1927, Washington, Government Printing Office, 1927, pp. 23, ill.

Zeppelins. See Lehmann, Ernst A., and Howard Mingos: The Zeppelins; the development of the airship, with the story of the Zeppelin air raids in the world war.

*

Zodiac. Le nouveau dirigeable vedette Zodiac V-7.

L'Aéronautique, 9me année, No. 96 (mai 1927), Paris, p. 154, ill.

Zurich. Le meeting de Zurich.

L'Aérophile, 35e année, Nos. 17-18 (ler-15 sept. 1927), Paris, p. 264.

Wronsky, Martin. The truth about German aviation.

Airways, Vol. 3, No. 5 (Jan. 1927), London, pp. 140-142, ill.

Wyatt, B. H. Aviator maps our last frontier, Alaska.

World's Work, Vol. 53 (Feb. 1927), Garden City, N. Y., pp. 393-407, ill., map.


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