Hauptseite
Hauptseite Kurzportrait von Pennula Airport Webcam Flugplatz und Flughafen Livecam aus aller Welt Cockpit View Videofilme und Fliegerfilme Flugwetterberichte mit Wolkenradar, Regenradar und Niederschlagsradar Luftbilder und Luftaufnahmen aus ganz Deutschland kostenlos Spezialthemen und Spezialberichte Kameratechnik Videotechnik Flugplanung ICAO und GPS Navigation Videofilme und Fotos von Modelleisenbahnen und Modellbahnen

Luftfahrtgeschichte: Bibliography of Aeronautics 1926 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 neunten Band eine Bestandsaufnahme der internationalen Luftfahrtliteratur im Jahre 1926.

Bezugsquelle: PDF Dokument, 159 Seiten (7,9 MB)
Bitte mit der rechten Maustaste anklicken, dann im Menü "Ziel speichern unter..." wählen.


BIBLIOGRAPHY OF AERONAUTICS

1926

Y

NATIONAL ADVISORY COMMITTEE^FOR AERONAUTICS

united states government printing office washington 1928

INTRODUCTION

This Bibliography of Aeronautics for 1926 covers the aeronautical literature published from January 1 to December 31, 1926. 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 1925.

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 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 for Aeronautics. October 27, 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. Aerotecn____________ 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 Métérologique 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. Ene. Ind. Nat_____________ Bulletin de la Société d'Encouragement

pour l'lndustrie Nationale, Paris.

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. 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. Sci. 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.

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

Rend. Instituto Sper. Aer____________ Rendiconte dell' Instituto Sperimentale

Aeronáutico, Roma.

Rend. Teen. Dir. Sup. Geno. Constr. Commissariato dell' Aeronáutica. In-Aeron. tendenza Genérale. Rendiconti Tec-

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

VI

ABBREVIATIONS

Rév. Gén. Seien_____________________Revue Générale Scientifique, Paris.

Riv. Ital. Aeron_____________________ Revista Italiana Aeronautica, Roma.

Scient. Amer_______________________ Scientific American, New York.

Techn. Berichte____________________Technische Berichte, Charlottenburg.

Tech. Rept. Advis. Com. Aeronautics._ Technical Report of the Advisory Committee on Aeronautics, London.

Zeitschr. Flugt. Motorluftsch_________Zeitschrift für Flugtechnik und Motorluftschifffahrt, München.

Zeit. Osterr. Ing. Arch. Ver___________ Zeitschrift des Oesterreichischen Inge-

nieuer- und Architekten - Vereines, Wien.

Zeitschr. Ver. deutscher Ing__________Zeitschrift des Vereines deutscher Ingenieure, Berlin.

BIBLIOGRAPHY OF AERONAUTICS

1926

By PAUL BROCKETT

vii

BIBLIOGRAPHY OF AERONAUTICS, 1926

By Paul Brockett

A

A. D. C. The A. D. C. "Nimbus" engine designed to fit standard "Puma" bearers.

Flight, Vol. 18, No. 9 (Mar. 4, 1926), London, pp. 122-126, ill., diagr.

- The 340 H. P. A. D. C—Nimbus engine.

Tbe Aeroplane, Vol. 30, No. 7 (Feh. 17,1926), London, pp. 174-178, ill.

- See Nimbus-Martinsyde: Another interesting A. D. C. modification. The

" Nimbus-Martinsyde."

A. M. See Pumps: Pompes auto-régulatrices A. M., et alimentation des moteurs à explosion par le système A. M.

A. N. E. C. III. A new commercial aeroplane for Australia. The A. N. E. C. Ill, with Rolls-Royce "Eagle IX" engine.

Flight, Vol. 18, No. 6 (Feb. 11, 1926), London, pp. 7S-S0, ill., diagr.

A. N. E. C. IV. The A. N. E. C. IV "Missel Thrush" light airplane.

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 21 (mimeographed), Washington, November 1926, pp. 8, ill. From " Flight," September 9, 1926.

A. 0. F. See Tulasne, Joseph: Trois années d'aviation en A. 0. F.

Aachen. See Gabbrielli, G.: Il canale del vento dell' Instituto di Aerodinamica

del Politecnico di Aachen. Accidents. On flying accidents.

The Aeroplane, Vol. 31, No. 22 (Dec. 1, 1926), London, pp. 669-674.

- See Ferry, Georges: A propos d'une cause d'accident au cours d'un vol en

avion.

- See Handley Page: The prevention of accidents in commercial aviation.

- See Lepère, G.: Les accidents dus à la perte de vitesse.

Accorinti, Vincenjo. Disturbi auricolari in aviazione.

Rivista Aeronautica; Anno 2, N. 6 (giugno 1926), Roma, pp. 89-92.

- Esiste una sordità professionale neh" aviatore?

Rivista Aeronautica, Anno 2, N. 10 (ott. 1926), Roma, pp. 65-71, ill.

Ackeret, J., A. Betz and 0. Schrenk. Experiments with an airfoil from which the boundary layer is removed by suction.

National Advisory Committee for Aeronautics, Technical Memorandums No. 374, Aug. 17, 1926 (mimeographed), Washington, August 1926, p. 4, ill.

From "Vorläufige Mitteilungen der Aerodynamischen Versuchsanstalt zu Göttingen," No. 4, November 1925.

Adhesives. Adhesives and adhesive action.

Engineering, Vol. 121, Nos. 3152, 3153 (June 11, 18, 1926), London, pp. 760-701, 737-738, ill.

AnvERTisEMENTS. Night-flying advertisements.

The Aeroplane, Vol. 31, No. 14 (Oct. 0, 1926), London, p. 476.

Aerial Mercury. The Aerial Mercury air mail plane.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, pp. 5ÖSD-510, ill.

106659—2S-2 1

Aero-Club de France. Le XVe grand prix de l'Aéro-Club de France des sphériquos.

L'Aérophile, 34e année, Nos. 19-20 (ler-15 oct. 1926), Paris, pp. 305-306, ill., map.

Aerodynamics. An application of modern aerodynamic theory. Aviation, Vol. 21, No. 3 (July 19, 1926), New York, pp. 87-90.

- Mécanique des fluides et pilotage.

L'Aéronautique, 8me année, No. 83 (avril 1926), Paris, pp. 126-127, ill.

--See Amans: Sur l'aérodynamique des moulins à vent.

■- »See Eula, Antonio. Le ricerche sperimentali in aerodynamica.

- See Farquharson, Frederick Burt: The wind balance in the Boeing aerodynamical laboratory at the University of Washington.

--»See Girault, M.: Equations intrinsèques du mouvement plan parallèle des

fluides visqueux incompressibles en régime permanent.

- (See Hooper, M. S.: Bernoulli's theorem in aerodynamics.

---See Licochine et Guiminelfarb: Calculs aérodynamiques des performances

d'un avion.

- See, Panetti, M.: Çontributo ai problemi sull' assetto trasversale dell'

aeroplano. Azione di dériva sulla velatura portante.

- See Pistolesi, Enrico: I concetti e i metodi della moderna aerodinamica.

--See Raimondi, E.: Alcunc considerazioni sulle leggi di similitudine

meccanica.

- See Roy, Maurice : A propos de recherches théoriques sur l'aérodynamique.

- (See Sabinin, G.: Problems of utilizing of energy of wind.

- (See Shook, Clarence Albert: The distribution of lift over thin wing sections.

- »See Toussaint, A., et E. Carafoli: Sur la théorie des ailes sustentatrices.

Aerodynamics Staff of the R. A. E. Test of a thin low drag aerofoil, R. A. F. 25.

Aeronautics, Tech. Kept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 92-94, tabls., diagr.

Aéro-Lloyd-Junkers. La fusion Aéro Lloyd-Junkers.

L'Aéronautique, 8me année, No. 81 (fév. 1926), Paris, p. 81.

Aeronautical Research Committee. See Aeronautics. Technical report of the Aeronautical Research Committee for the year 1924-25, (with appendices.)

Vol. 1, Aeroplanes (Model and full scale).

London, His Majesty's Stationery Office, 1926.

Aeronautics. See National Advisory Committee for Aeronautics: Aeronautics. Eleventh Annual Report of the National Advisory Committee for Aeronautics, 1925.

Aeroplane. On the fifteenth birthday of "The Aeroplane."

Tbe Aeroplane, Vol. 30, No. 26 (June 30, 1926), London, pp. 633-651, ill. (History of development of aviation since 1911.)

Africa. East African air line.

Flight, Vol. 18, No. 46 (Nov. 18, 1926), London, pp. 749-751, ill.

Agriculture. Dusting the Gipsy Moth by airplane.

Aviation, Vol. 21, No. 17 (Oct. 25, 1926), New York, p. 715.

Air Commerce Act of 1926. The Air Commerce Act of 1926.

Aviation, Vol. 20, No. 24 (June 14,1926), New York, pp. 904-906.

Air Council. Annual report of the Meteorological Committee to the Air Council for the year ended 31st March, 1925.

London, Published by His Majesty's Stationery Office, 1925, p. 64.

- Annual report of the Meteorological Committee to the Air Council for the

year ended 31st March 1926.

London, Published by His Majesty's Stationery Office, 1926, p. 74.

Air, Current of. Change of ISO0 in the direction of a uniform current of air.

National Advisory Committee for Aeronautics, Technical Memorandums No. 350, Feb. 19, 1926, (mimeographed) Washington, February 1926, p. 31, ill. Contribution hy the Aerodynamical Laboratory of the Warsaw Polytechnic Institute, Directed by Professor C. Wito-szynski. Prepared for publication by J. Bonder.

Air sounders. See Behm: Behm acoustic sounder for aircraft.

Air Union. L'Air Union.

L'Aéronautique marchande (L'Aérotecbnique, Sme année, No. 81), 5me année, No. 50 (fév. 1926), Paris, pp. 79-SO, ill.

Aircraft Board. See United States. President's Aircraft Board: Report of

President's aircraft board. November 30, 1925. Airfoils. Aerodynamic characteristics of airfoils-IV, by National Advisory Committee for Aeronautics.

National Advisory Committee for Aeronautics, Report No. 244, Sept. 13, 1926, Washington, Government Printing Office, 1926, pp. 1S7-230, diagrs.

- Air flow in the wake of an aerofoil

Engineering, Vol. 122, No. 3179 (Dec. 17,1926), London, p. 766.

- International tests of aerofoils.

Engineering, Vol. 121, No. 3150 (May 28,1926), London, p. 625.

- Wind tunnel test of Clark "Y"-Clark "Y-15"-Clark "Y-lS"-Clark

"Y-21 "-Gottingen 398 and S. T. Ae'-27a, 6"x36" airfoils. Tests Nos.

233, 234, and 237.

Air Corps Information Circular, Vol. 6, No. 573 (Oct. 4, 1926), Washington, Government Printing Office, 1926, pp. 24, tahles, diagrs.

- See Ackeret, J., A. Betz and O. Schrenk: Experiments with an airfoil

from which the boundary layer is removed by suction.

- See Fage, A., and L. F. G. Simmons: An investigation of the airflow pattern in the wake of an airfoil of finite span.

- See Frey, Kurt: Experiments with rotating cylinders in combination with

airfoils.

- See Heard, Cecil G.: Pressure distribution over a U. S. A.—27 aerofoil

with square wing tips—model tests.

- See Higgins, George J.: The characteristics of the N. A. C. A. M-12

airfoil section.

- See Lamb, H. : On the drag of an aerofoil for two dimensional flow.

- See Higgins, George J.: The N. A. C. A. CYH airfoil section.

- See Handley Page, Frederick: Tests on an airfoil with two slots suitable

for an aircraft of high performance. Lift, drag, rolling and yawing moment measurements.

- See Schrenck, O. : Effect of roughness on properties of airfoils.

- See Wings.

Airplane reliability tour. Progress of the airplane reliability tour. Aviation, Vol. 21, No. 8 (Aug. 23,1926), New York, pp. 323-328, ill.

- The start of the airplane reliability tour.

Aviation, Vol. 21, No. 7 (Aug. 16,1926), New York, pp. 287-292, ill.

Airplanes. An interesting undercarriage "leg." New features of Beardmore chassis.

Aircraft Engineer, suppl. Flight, Vol. 18, No. 8 (Feb. 25, 1926), London, pp. llOf-HOb., ill., diagr.

- Répertoire des monographies d'avions et d'hydravions 1925-1926.

Hirschauer, L., et Ch. Dollfus: L'année aéronautique 1925-1926. Paris, Dunod, éditeur, 1926, pp. 3-59, ill.

Airscrews. See Pierson, R. K. : Airscrew tip speeds.

Airship models. See Japan: The Wind Tunnel Committee of the Aeronautical Council of Japan. The resistance of the airship models measured in the wind tunnels of Japan.

Aibship, Rigid. Los dirigibles comerciales.

Ihérica, Año 13, Num. 643 (11 Sept. 1926), Barcelona, pp. 148-149.

- See Gases: Empleo del combustible gaseoso en los dirigibles.

- See Gigli, Alberto: Il dirigibile rigido.

- See Mast, Mooring: I piloni d'ormeggio per dirigibili.

- See Nobile, Umberto: Il dirigibile italiano nelle sue più recenti realizzazioni: Il tipo "N. "

- See Nobile, Umberto: Sullo sviluppo delle costruzioni dei dirigibili in

Italia.

- See Plessis, J. du: Les grandes dirigeables dans la paix et dans la guèrre.

Leur technique.

Airships. Airships—Past and future.

The Aeroplane, Vol. 31, No. 21 (Nov. 24,1926), London, p. 65S.

- Armed super-dirigibles.

' Literary Digest, Vol. 89 (May 1926), New York, pp. 22-23, diagr.

-- Making airships safe.

Literary Digest, Vol. 89 (June 26, 1926), New York, p. 23.

-r The metal-clad airship.

The Aeroplane, Vol. 30, No. 24 (June 16,1926), London, pp. 596-598, diagr.

- Metal versus fabric; all-metal naval airship in which duralumin plating is

used as an outside covering.

Scient. Amer., Vol. 135 (Sept. 1926), New York, pp. 196-197, ill., diagrs.

- Monographie de dirigeable.

Hirschauer, L., et Ch. Dollfus: L'année aéronautique 1925-1926. Paris, Dunod, éditeur, 1926, pp. 60-61, ill.

- New fuel for dirigibles.

Automotive Industries, Vol. 55, No. 8 (Aug. 19, 1926), New York, p. 283.

- On the coming of age of the British airship.

The Aeroplane, Vol. 30, No. 22, (June 2, 1926), London, pp. 529-534, ill.

-- Zeppelin express cruiser.

Scient. Amer., Vol. 135 (Sept. 1926), New York, p. 195, ill.

--. See Black, Archibald: Leviathans of the air.

-- See Burgess, C. P.: New 6,000,000 cubic-foot airships for our navy.

- See Crocco, G. Arturo: La stabilità delle aeronavi.

- See Crowley, Jr., J. W., and S. J. De France: Pressure distribution ou the

C-7 airship.

- See Dunlap, O. E.: Metal-clad airship.

- See Engberding: Die Katastrophe der Shenandoah.

- See Havhill, Clinton H.: The drag of airships.

- See Kort, L.: Ein neues Luftschiff. «

- See Lehmann, E. A.: The safety of the Zeppelin airship.

- See Litchfield, P. W. : Case for the super-dirigible.

- See Mooring: Mooring a semi-rigid airship.

Airships. See Nobile, Umberto: The trend of airship construction in Italy.

- See Richmond, V. C: A review of the present position with regard to airship research and experiment.

- See Schreiber, Otto: Rapport et projet de convention relatifs à la responsabilité de l'exploitant d'un aéronef.

- See Scott, G. Herbert: The development of airship mooring.

- See Scott, G. Herbert: Research problems in airship development.

- See Southwell, R. V.: On the calculation of stresses in the hulls of rigid

airships.

- See Sumner, P. H.: The science of flight and its practical application.

Vol. I: Airships and kite balloons.

--.See Thaden, Herbert V: 210-ft. airship mooring tower at Detroit airport.

- See Truscott, Starr: Airships three times the volume of the "Shenandoah."

- See Truscott, Starr: New rigid airships.

- iSee Wallis, B. N.: Some technical aspects of the commercial airship.

- See Wigand: Die elektrischen Gefahren des Luftschiffverkehrs.

Airships Panel. Report of the airworthiness of airships panel.

Aeronautics, Tecb. Eept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 636-964.

Air-speed. See Coleman, Donald G. : N. A. C. A. flight-path-angle and airspeed recorder.

Airwats. Airway lighting units ordered by Commerce Department.

Engineering News-Record, Vol. 97, No. 10 (Sept. 2, 1926), New York, p. 396.

- On imperial air ways.

The Aeroplane, Vol. 31, No. 13 (Sept. 29,1926), London, pp. 417-422.

- Plan to mark airways in ten middle western states.

Aviation, Vol. 20, No. 4 (Jan. 25, 1926), New York, p. 115, map.

- See Australia: The Australian imperial airway.

- See Imperial Airways: Imperial Airways Dew air fleet.

Airways. See Jackson, Alan: Marking the airways.

Aitchison, Leslie. Cold work and fatigue.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1921-25, Vol. 2, London, 1926, pp. 512-517, tabls.

- Duralumin.

Aircraft Engineer suppl. to Flight, Vol. 18, Nos. 12, 17, 21, 25, 30, 39, 43 (Mar. 25, Apr. 29, May 27, June 24, July 29, Sept. 30, Oct. 2S, 1926), London, pp. 178a-178c, 280g-260i, 308g-308b, 362f-362h, 464a-464c, 636a-636c, 702d-702e.

Aitchison, Leslie, and staff of the engineering department of the National Physical Laboratory. Notched bar impact tests at low temperatures.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1928, pp. 518-536, tabls.

Akimoff, N. W. Alcune idee sull' elica propulsiva.

Rivista Aeronautica, Anno 2, N. 2 (feb. 1926), Roma, pp. 121-126, ill.

Alaska. Airplanes to be used for map work in Alaska.

Engineering News-Record, Vol. 97, No. 2 (July 8,1926), New York, p. 75.

- Conquering Alaska by aerial survey.

Outlook, Vol. 144 (Nov. 3, 1926), New York, pp. 294-298, ill.

- See Wien, Noel.: Alaskan flying.

- See Wien, Noel: Flying adventures in Alaska.

Alayrac, A. Étude théorique du vol sans moteur.

Ille Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 259-266.

Alayeac, A. Le diagramme du vol en montée, les deux régimes de vol et l'accident de la perte de vitesse.

Ille Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 398-406, ill.

--Étude théorique du vol par battements.

Service Technique de l'Aéronautique, Bulletin Technique, No. 39, Dec. 1926, France, pp. 32, ill.

- Étude théorique du vol ramé.

C. H. Acad. Sei., T. 182, No. 19 (10 mai 1926), Paris, pp. 1131-1133.

- Le problème de l'aile battante et du vol ramé.

L'Aérotechniquo (L'Aéronautique, 8me année, No. 88), 4me année, No. 45 (sept. 1926), Paris, pp. 297-299, ill.

Albatros. Albatros commercial airplane L 73.

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 16 (mimeographed), Washington, September 1926, pp. 12, ill. From "Zeitschrift für Flugtecbnik und Motorluftschiffabrt" July 28, 1926.

- The Albatros L. 68a school machine.

Flight, Vol. 18, No. 52 (Dec. 30, 1926), London, pp. 869-870, ill.

- The Albatros L 72A. A German newspaper carrier with slotted wings.

Flight, Vol. 18, No. 15 (Apr. 15, 1926), London, pp. 228-231, ill.

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 8 (mimeographed), Washington, Juue 1926, pp. 4, ill. From "Flight," April 15, 1926.

- The Albatros L. 73.

The Aeroplane, Vol. 31, No. 5 (Aug. 4, 1926), London, p. 160, ill.

- The Albatros L. 73. A German biplane with two 240 h. p. B. M. W.

IV engines.

Flight, Vol. 18, No. 36 (Sept. 9, 1926), London, pp. 562-564, ill.

- A flying boat on wheels. The Albatros L. 72 two-scatcr light plane.

Flight, Vol. 18, No. 4 (Jan. 28, 1926), London, pp. 43-14, ill., diagr.

—— Der neue zweimotorige Albatros-Verkehrsdoppeldecker L 73. Luftfahrt, 30. Jahrg., Nr. 14 (20 Juli 1926), Berlin, pp. 212-213, ill.

- See Lachmann, G. : Albatros-Verkehrs- und Lasten-Flugzeug L 72a.

- See Rühl, Karl, und Hasso Wiederhold: Albatros-Verkehrsflugzeug L 73.

Albert. Albert TE-I training airplane.

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 23 (mimeographed), Washington, December 1926, pp. 5, ill.

- Une avvionnette remarquable. L'avion Albert, licence Tellier Duhamel.

L'Aérophile, 34e année, Nos. 7-8 (ler-15 avril 1926), Paris, pp. 108-109.

Alberta. Aerial mapping in Alberta.

Aviation, Vol. 20, No. 18 (May 3, 1926), New York, p. 664.

Aldrin, E. E. Technical progress in aeronautics.

Mechanical Engineering, Vol. 48, No. 4 (April 1926), New York, pp. 309-316, ill.

Alexander, j. D. 30 cities in 28 days.

System, Vol. 50 (Nov. 1926), Chicago, p. 624, ill.

Alexander Eaglerock. The new Alexander Eaglerock.

Aviation, Vol. 20, No. 10 (Mar. 8, 1926), New York, p. 339, ill.

Alexanderopf, V. L. See Gorjainoff, A. A., and G. I. Kouzmin, edited by V. L. Alexanderoff and V. P. Vetchinkin: Standard specification for statik tests of airplanes.

Alford, W. K. See Harris, R. G, and W. K. Alford: Wind channel tests on radiators.

Allen, C. B. The Ford air tour.

Aero Digest, Vol. 9, No. 3 (Sept. 1926), New York, pp. 17S-1S0, ill., map.

- Italy wins Schneider trophy race.

Aero Digest, Vol. 9, No. 6 (Dec. 1926), New York, pp. 426-427, 4SI, 111.

Allen, L. H. Airplanes greatly improved with recent developments in aerodynamics.

Automotive Industries, Vol. 54, No. 21 (May 27, 1926), New York, pp. S9S-899, ill. Alloys. See Lautal : A new light alloy.

- See Y-alloys: The age hardening of Y-alloj's.

Almagià, Roberto. L'importanza geográfica della trasvolata polare del "Norge."

h 'Aerotécnica, Vol. 6, N. 3 (mag-guigno 1926), Pisa, pp. 1S9-192, map. Alps. See Bristol Cherub: Over the Alps with a Bristol "Cherub"engine. Altimeters. See Brombacher, W. G.: Tables for calibrating altimeters and

computing altitudes based on the standard atmosphere.

-- See Tamaru-Takurô: Hyôzyum-Taiki, oyobi Kôdokei no Yomi no Naosi.

Altitude. See Beyne, Mazer, et Grenier: Inhalation d'oxygène pour vol à

haute altitude.

- See Jacobs, A. M.: A new altitude airplane. The acute conditions of high

altitude flying involve special design problems.

-- See Lindholm, F. : La précision de la mesure des records d'altitude.

- See Macready, John A.: A fine American altitude flight.

Aluminum. See Gough, H. J., D. Hanson, and S. J. Wright: The behavior of single crystals of aluminum under static and repeated stresses.

- See Meissner, Karl Leo: Die Veredelungsvorgânge in vergiitbaren Aluminiumlegierungen.

- See Waché, M.: Contribution à l'étude de la dissolution de l'aluminium et

de ses alliages dans les acides.

Amans. Sur l'aérodynamique des moulins à vent.

C. R. Acad. Sci., T. 182, No. 13 (29 mars 1926), Paris, pp. S41-S43.

Amans, Paul. Rapports scientifiques entre le vol de l'abeille et la navigation aérienne.

Amphibians. Sviluppo degli aeroplani anfibi.

Rivista Aeronáutica, Anno 2, N. 8 (agosto 1926), Roma, pp. 130-136, ill.

Amundsen. Amundsen's North Pole airship.

Flight, Vol. 18, No. 11 (Mar. 18, 1926), LoDdon, p. 161.

- See Byrd et Amundsen: Les survols aériens du Pôle Nord: Byrd et

Amundsen.

- See Dollfus, Charles: Le récit de l'expédition poliare d'Amundsen.

- See M., J.: Amundsen au Pôle Nord.

- See North Pole: L'impresa polare.

- See Polar flight: Amundsen's polar flight. Airship Norge's successful

Journey over the North Pole.

Amundsen, Gustav Sahlcuist. See Amundsen, Roald Engelbregt Gravning: Den f0rste flukt over Polhavet. . . .

Amundsen, Roald Engelbregt Gravning. La expedición polar Amundsen. Ibérica, Año 13, Nos. 627-028 (8-15 mayo 1926), Barcelona, p. 296, ill.

- Den f0rste flukt over Polhavet, med bidrag av Gustav S. Amundsen,

B. L. Gottwaldt, Joh. Hover, Finn Malmgren [og] Hj. Rüscr-Larsen.

Oslo, Gyldendal, Norsk forlag, 1926, p. 264, ill., rtiagrs., map.

Amundsen, Roald Engelbregt Geavning. Il mio volo polare fino a 88° lat. Nord con relazioni di H. Riiser-Larsen, L. Dietrichson, F. Ramm, J. Bjerknes.

Milano.

Traduzione dal norvegese di Ada Vangensten-Mazzega, A. Mondadori.

Reviewed in: Revista Aeronautica, Anno 2, N. 4 (aprile 1926), Roma, pp. 169-190, ill.

Amundsen-Ellsworth. The Amundsen-Ellsworth polar expedition. Flight, Vol. 18,No. 15 (Apr. 16, 1926), London, pp. 226-227, ill.

Anastasiu, Victor C. La tension arterielle chez les aviateursl

Hie Congrés International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 105-108, tables,

Anderlik, E. Experiments on autorotation.

National Advisory Committee for Aeronautics, Technical Memorandums No, 380, Sept. 23 1926 (mimeographed), Washington, Septemher 1926, p. 11, ill., diagrs. From "Zeitschrift für Flugtechnik und Motorluftschirlahrt" August 28, 1926.

- Untersuchungen über Autorotation.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 16. Heft (28. Aug. 1926), München, pp. 338-342, ill.

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.

Aeronautical Research Committee, Reports and Memoranda, No. 1006 (Ae. 212), Dec, 1925, London, 1926, p. 5, tabls., diagr. Anderson, J. B. Sailing the uncharted seas of the sky in the Shenandoah. American Magazine, Vol. 102 (Sept. 1926), Springfield, Ohio, pp. 64-65, ill.

Angström, Tord K., and Tore B. Magni. The use of extensometers in recording actual bending moments during flight in wooden wing-spars.

Hie Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 235-240, ill.

Angström, Tord K. Water-proofing wooden constructions with tinfoil.

Hie Congrès International de la Navigation Aérienne, T. 3, Paris, [1925], pp. 55-59, ill.

Annual. L'annuaire de l'aéronautique. Paris, Rouffé, éditeur.

Annuario. Annuario 1926. (Pionieri dell' aeronautica.)

Roma, Prow, gen dello Stato, Libreria (stab, poligr. Ann. Stato), 1926, p. 64 con ritratto.

Ansaldo-Caccia 2. See Gabrielli, G.: I trafilati in duralluminio nelle costruzioni aeronautiche e l'aeroplano "Ansaldo-Caccia 2."

Antoinat. Y a-t-il une crise de pilotes?

L'Aérophile, 34e année, Nos. 1-2 (ler-15 janv. 1926), Paris, pp. 7-9. Includes communications from Oaston Menier.

Apkijasky, Peter. Gliders in Soviet Russia.

Aero Digest, Vol. 8, No. 1 (Jan. 1926), New York, p. 24, ill., diagr.

Akado See Manigold, G.: Ein neues deutsches Schulflugzeug. Arado Ar. S. I. Archbutt, .S. L., and J.-W. Jenkin. Mechanical properties of pure magnesium and certain magnesium alloys in the wrought condition.

Aeronautical Research Committee, Reports and Memoranda, No. 1037 (M. 46), Feb., 1926, London, 1926, p. 13, tabls., diagr.

Archbutt, S. L. A method of improving the properties of aluminium alloy castings.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-26, Vol. 2, London, 1926, pp. 537-548, ill., tabls., diagr.

Archbutt, S. L., and J. D. Grogan. Report on the accelerated ageing of " Y" alloy.

Aeronautical Research Committee, Reports ana Memoranda, No. 1038 (M. 47), Apr., 1926, London, 1926, p. 10, tabls., diagr.

Arctic. Giant three-motor plane for arctic conquest. Pop. Meeh., Vol. 46 (July 1926), Chicago, p. 75, ill.

Arctic. See Basohin, Otto: Die Leistungen der amerikanischen Kreigsflugzeuge bei der "Mac Millan Arctic-Expedition."

- See Binney, George: With seaplane and sledge in the Arctic.

Arctic flight. The Byrd Arctic expedition.

Aviation, Vol. 20, No. 16 (Apr. 19, 1926), New York, pp. 5S5-586, ill.

- Progress of the Detroit Arctic expedition.

Aviation, Vol. 20, No. 16 (Apr. 19, 1926), New York, pp. 587-588, ill., map.

- See Kleinschmidt, F. E.: Arctic dangers.

Argentina. See Llave, Joaquin de la: El "Raid" aèreo a la Argentina.

Ariel. The world's first aeroplane, 1843.

Aero Field, Vol. 1, No. 1 (Apr. 1926), London, p. 10, ill.

Armstrong-Siddeley. The Armstrong-Siddeley Genet.

The Aeroplane, Vol. 31, No. 8 (Aug. 25, 1926), London, pp. 252-254, ill.

Armstrong-Siddeley "Genet." The Armstrong-Siddeley "Genet." Flight, Vol. 18, No. 34 (Aug. 26, 1926), London, pp. 531-532, ill.

Armstrong-Whitworth. The Armstrong-Whitworth "Argosy." The latest three-engined commercial airplane.

Flight, Vol. 18, No. 26 (July 1, 1926), London, pp. 368-369, ill.

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 14, (mimeographed), Washington, August 1926, p. 7, ill. From "Flight, " July 1, and August 5,1926.

- The Armstrong-Whitworth "Argosy." Some constructional features

described and illustrated.

Flight, Vol. 18, No. 31 (Aug. 5,1926), London, pp. 473-476, ill., diagr.

Army Officers. All Army officers must be trained in the air.

TJ. S. Air Services, Vol. 11, No. 8 (Aug. 1926), Washington, D. C, pp. 45-50.

Arnaldo. Linee aeree intercontinentali. Velocità, (febbraio-giugno 1926).

Arnold, Henry H. Airmen and aircraft. An introduction to aeronautics. New York, Ronald Aeronautic Library, 1926, pp. 216, ill.

Arnold, Leslie. See Thomas, Lowell: The first world flight. Being the personal narratives of Lowell Smith, Erik Nelson, Leigh Wade, Leslie Arnold, Henry Ogden and John Harding.

Arresters. See Pratt, Hazen C: Airplane arresters and catapults.

- See Pratt, Hazen C: Experiments with an airplane arrester.

Arrow. The Arrow commercial airplanes.

Aviation, Vol. 21, No. 20 (Nov. 15,1926), New York, pp. 843-844, ill.

Arthur, William. Modern hangars.

Aviation, Vol. 20, No. 5 (Feb. 1, 1926), New York, pp. 152-153, ill.

Asia.—See Beck, Waldemar: Deutsche Fühler nach Ostasien.

Atlantic. The tragedy of an Atlantic flight: Disaster at the start.

Illustrated London News, Vol. 169, No. 4563 (Oct. 2,1926), London, p. 605, ill.

- See Franco: La traversée de 1'Atlantique Sud en quatre étapes.

- SeeS-35: Projected non-stop flight of S-3S from New York to Paris.

- See Schott, G.: Geographie des Atlantischen Ozeans.

- See Transatlantic flight: Spanish transatlantic flight.

- See Wings: Cabins in airplane's wings for transatlantic flight.

Atmosphere. The rare gases of the atmosphere.

Engineering, Vol. 121, No. 3143 (March 26, 1926), London, pp. 388-389, ill.

Atmosphere. See Maoready, J. A.: Exploring the earth's atmosphere.

- See Petijean, L.: Sur la thermodynamique des surfaces de discontinuité

atmosphérique.

- See Raethjen, P.: Atmosphärische Stromfelder und Kinematographische

Vermessungen.

- See Thoret: Le vol à voile et la connaissance de l'atmosphère.

Atmospheric electricity. See Eckersley, T. L.: Electrical constitution of the

upper atmosphere.

- See Hess, V. F.: Die elektrische Leitfähigkeit der Atmosphäre und ihre

Ursachen.

- See Idrac, P.: Sur des enregistrements du champ électrique jusqu'à

20,000m d'altitude.

- See Negro, Carlo: Elettricita atmpspherica.

Atmospheric pressure. See 'Cruchet, René: Influence des variations de la pression atmosphérique sur la pression artérielle et le mal des aviateurs. Rôle régulateur des inhalations d'oxygène.

Atjlt, J. P. Navigation of aircraft by astronomical methods.

Carnegie Institution of Washington, Publication No. 175, Vol. 5, Washington, 1926, pp. 315-337, ill.

Aumont-Thiéville. Le prix Aumont-Thiéville.

L'Aérophïle, 34e année, Nos. 13-14 (ler-15 juil. 1926), Paris, pp. 213-214, ill.

Australia. The Australian imperial airway.

The Aeroplane, Vol. 31, No. 13 (Sept. 29,1926), London, pp. 424-426.

--Civil aviation in Australia.

Flight, Vol. 18, No. 52 (Dec. 30, 1926), London, p. 865.

- The growth of an Australian airline.

Aviation, Vol. 20, No. 18 (May 3, 1926), New York, pp. 663-664.

- Landmarks in Australia's aerial history.

Aero Field, Vol. 1, No. 5 (Aug. 1926), London, pp. 103, 105, 110, map.

- See Brinsmead: Across Australia in two days. Col. Brinsmead's fine

performance in a S. H. 50.

- See Brittain, Harry: Sir Harry Brittain's flight to Australia.

- See Quantas: "Quantas." A successful Australian air transport service.

- See Robertson, F. A. de V.: Another Australian flight.

- See Seagull: The launch of the Australian seagull.

Autogire. Les autogires dans l'industrie aéronautique.

L'Aéronautique, 8me année, No. 83 (avril 1926), Paris, p. 125, ill.

- See Courtney, Frank T. : Note sur le pilotage de l'autogire.

Autogiro. Construcción del autogiro en el extranjero y en España. Ibérica, Año 13, Num. 643 (11 de septiembre de 1926), Barcelona, p. 146.

- See Cierva: L'autogiro La Cierva.

- See Cierva, Juan de la: The development of the Autogyro.

- See Pistolesi, E.: Consideraziono sull' "Autogiro."

- See Spain: Construcción del autogiro en el extranjero y en España.

Autorotation. See Anderlik, E.: Experiments on autorotatiou.

- See Anderlik, E. : Untersuchungen über Autorotation.

Avian. "Avian." The machine for the private owner.

The Aeroplane, Vol. 31, No. 23 (Dee. 8, 1926), London, p. 693, ill.

Aviators. On international aviators.

The Aeroplaue, Vol. 31, No. 14 (Oct. 6, 1926), London, pp. 449-154.

Avrò. Training machines.

The Aeroplane, Vol. 31, No. 23 (Dec. 8, 1926), London, p. 692, ill.

Avrò "Avian." The Avrò "Avian" airplane. 65 HP. Armstrong-Siddeley "Genet" engine.

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 17, (mimeographed), Washington, Octoher 1926, pp. 6, ill. From "Flight," August 26, 1926.

- The Avrò "Avian." The 65 HP Armstrong-Siddeley "Genet" engine.

Flight, Vol. 18, No. 34 (Aug. 29,1926), London, pp. 533-537, ill., diagr.

Avrò Gosport. The Avrò "Gosport" a new training machine of "504" type. Flight, Vol. 18, No. 15 (Apr. 15, 1926), London, pp. 222-224, ill.

- The avrò Gosport training machine.

The Aeroplane, Vol. 30, No. 16 (Apr. 21, 1926), London, p. 434, ill.

- Demonstrating the Avrò "Gosport."

Flight, Vol. 18, No. 29 (July 22, 1926), London, pp. 442-443, ill.

Azcarate, Jtjan F. Linking the America by air.

Aero Digest, Vol. 9, No. 3 (Sept. 1926), New York, pp. 188, 267, ill., map.

B

Baatz. Die Luftfahrzeug-Gesellschaft im Seeflug-Wettbewerb.

Zeitschr. Flugt. Motorluftschr., 17. Jahrg., 20. Heft (28. Okt. 1926), Müuchen, pp. 444-445.

Baatz, G. Bau eines See-Schulflugzeuges.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 5. Heft (13. März 1926), München, pp. 89-90, ¡11.

Baccari, Alfredo. La cooperazione delle unità aeree e celeri terrestri. Rivista Aeronautica, Anno 2, N. 6 (giugno 1926), Roma, pp. 14-44.

Baciucchi, Alighiero. Italy's civil aviation.

Aero Digest, Vol. 9, No. 4 (Oct. 1926), New York, pp. 282-283, 333, ill.

Bader, H. G. Die Vergrösserung der Flugzeuge.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 15. Heft (14. Aug. 1926), München, pp. 322-325,

ai.

Badino, Mario. Appunti sulla cooperazione della cavalleria coll'avizaione. Rivista Aeronautica, Anno 2, N. 10 (ott. 1926), Roma, pp. 32-48.

Bacnulo, A. Il nuovo motore Bagnulo.

L'Aerotecnica, Giornale ed Atti dell'Associazione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 357-364, ill.

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

Baker, J. F. Stresses in a stiff jointed polygonal frame under a system of loads perpendicular to the plane of the frame.

Aeronautical Research Committee, Reports and Memoranda, No. 1039 (Ae. 22S), Feb., 1926; London, 1926, pp. 9, diagr.

Baldwin, RAYHONn. Inviting capital. Safeguarding the investor against needless risk.

Aviation, Vol. 21, No. 14 (Oct. 4, 1926), New York, pp. 587-5SS.

Balloons. Exploring the air.

Literary Digest, Vol. 88 (Mar. 13, 1926), New York, p. 22, ill.

- See Aero-Club de France: Le XVe grand prix de l'Aero-Club de France

des sphériques.

- See Blee, H. H.: The spherical balloon.

--See Morley-Jenkins, F. : Metal balloons.

Balloons. See Upson, Ralph H., and Ch. de Forest Chandler: Free and captive balloons. Part I: Free balloons, by Ralph H. Upson. Part II: Captive balloons, Part III: Fabrics for gas envelopes, by Ch. de Forest Chandler.

Ballou, Sidney. Limitations of aircraft in naval warfare.

Canadian Defence Quarterly, Vol. 3, No. 3 (April 1926), Ottawa, pp. 335-345.

Reprinted, by permission, from the United States Naval Institute Proceedings, May 1925.

Balsorano, C. Lefebyre m. See Congrès International de la Navigation Aérienne: III Congresso Inter, dì Navigazione Aerea, Bruxelles, 1-10 ottobre 1925.

Baltimore. See Tipton, William D.: Baltimore aerial survey well under way. Bambino, Enzo. Volo ad alta quota.

L'Ala d'Italia, Anno 5, N. 12 (Die. 1926), Milano, pp. 529-530.

Bane, Thurman H. A trip over the Western Air Express.

Aviation, Vol. 21, No. 17 (Oct. 25, 1926), New York, pp. 710-715, ill.

Bárbara. El buque "Bárbara" con rotores Flettner, en Barcelona.

Ihérica, Año 13, Num. 643 (11 de septiembre de 1926), Barcelona, pp. 145-147, ill.

Barcelona. See Bárbara: El buque "Bárbara" con rotores Flettner, en Barcelona.

Bardella, Pier Luigi. Addestramento degli aviatori della specialità da ricognizione.

Rivista Aeronautica, Anno 2, N. 3 (marzo 1926), Roma, pp. 24-38. Barker, J. F. See Pippard, A. J. Sutton, and J. F. Barker: An experimental investigation into the properties of certain framed structures having redundant bracing members.

Barksdale, E. H. Flugversuche in McCook-Field.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 3. Heft (14. Feb. 1926), München, pp. 50-53.

Barnaby, Ralph S. See MacDill, Leslie, and Ralph S. Barnaby: Army-Navy standards.

Barnwell, F. S. A suggested method for attaining stability in the original lay-out of an aeroplane design.

Aircraft Engineer, suppl. to Flight, Vol. 18, Nos. 17, 21 (Apr. 29, May 27, 192li), London, pp. 260a-260d, 308a-308e.

Barr, Guy. The air bubble viscometer.

Aeronautical Research Committee, Reports and Memoranda, No. 9S8 (M. 31), Apr., 1925, London, 1926, p. 10, ill., diagr.

- Experiments relating to the electrification of balloon fabrics.

Aeronautical Research Committee, Reports tand Memoranda, No. 1017 (M. 37), June 1926, London, 1926. p. 10.

- The measurement of viscosity by means of capillary tubes.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 558-580, diagr.

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

Aeronautical Research Committee, Reports and Memoranda, No. 1016 (M. 36), July, 1926, London, 1926, p. 22, diagr.

Baschin, Otto. Die Leistungen der amerikanischen Kreigsflugzeuge bei der "MacMillan Arctic-Expedition."

Luftweg, Jahrg., Heft 3 (10. Feh. 1926), Berlin-München, pp. 20-22, map.

Bastico, Ettore. L'arma aerea e l'intellettualità e spiritualità della guerra. Rivista Aeronautica, Anno 2, N. 4, 5 (aprile, mag. 1926), Roma, pp. 1-22, 33-57.

Bateman, H., H. C. H. Townend, and T. A. Kirkup. Experiments with a family of airscrews, including effect of tractor and pusher bodies. Part IV. On the effect of placing an aircsrew in various positions within the nose of a streamline body.

Aeronautical Research Committee, Reports and Memoranda, No. 1030 (Ae. 223), Feb. 1926, London, 1926, p. 27, tabls., diagr.

Bateman, H. See Lock, C. N. H., H. Bateman, and H. C. H. Townend: The airflow round a body as affecting airscrew performance.

- See Lock, C. N. H., and H. Bateman: The effect of gap between an airscrew and a tractor body.

-- See Lock, C. N. H., and H. Bateman: The effect of wind tunnel interference on a combination of airscrew and tractor body.

- See Lock, C. N. H., H. Bateman, and H. C. H. Townend: Experiments

to verify the independence of the elements of an airscrew blade.

- 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., and H. Bateman: The measurement of airflow round

an airscrew.

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: Experiments on a model of a Bristol

Fighter aeroplane (l/100th scale). Part I. Force and moment measurements at various angles of yaw.

- See Frazer, R. A., and A. S. Batson: Experiments on a model of a Bristol

Fighter aeroplane. (l/10th scale). Section II. Lateral derivatives by the forced oscillation method.

- See Irving, H. B., and A. S. Batson: Forces and moments (including

those due to controls) on a model Fairey "N4" flying boat "Atlanta," at various angles of yaw.

- 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 Irving, H. B., and A. S. Batson: Some experiments on a slotted

aerofoil.

- See Irving, H. B., and A. S. Batson: Summary of data on slotted wings

obtained in the wind tunnel of Messrs. Handley Page, Ltd.

Bauer, Louis Hopewell. Aviation medicine.

Baltimore, Williams & Wilkins Company, 1926, pp. xv, 241, ill. Scient. Amer., Vol. 135 (July 1926), New York, pp. 62-63.

Bauer, P. P. v. Commercial aviation in the American tropics.

Aviation, Vol. 20, No. 12 (Mar. 22, 1926), New York, pp. 407-410, ill.

Baumhauer, A. G. von. Photographic time studies of airplane paths.

National Advisory Committee for Aeronautics, Technical Memorandums No. 315, Jan. 7, 1926 (mimeographed), Washington, January, 1926, p. 10, ill.

"Report V 99" from "Verslagen en Verhandelungen van den Rijks-Studiedienst voor de Luchtvaart," Part III, 1925.

Baunach, M. Die Entwicklung der Luftschiffahrt.

Innshruek-Wien-Miinehen, Verlagsanstalt Tyrolia A. Q., 1926.

Beardmore. The Beardmore "Cyclone" aero engine.

Flight, Vol. IS, No. 44 (Nov. 4, 1920), London, pp. 717-71S. ill.

Beardmore. The .Beardmore W. B. XXVI. A machine with excellent controllability.

Flight, Vol. 18, No. 8 (Feb. 25,1926), London, p. Ill, ill.

—— See Airplanes: An interesting undercarriage "leg." New features of Beardmore chassis.

Beahdsley, Edward G. See Miller, Harold E., and Esward G. Beardsley:

Spray penetration with a simple fuel injection nozzle. Bearings. See Joachim, W. F., and Harold W. Case: Tests of several bearing

materials lubricated by gasoline. Béarn. See C, H.: Aviation, cartographie et propagande en Beam. Beck, Waldemar. Deutsche Fühler nach Ostasien.

Luftweg, Jahrg. 1926, Heft 19 (10. Okt. 1926), Berlin-München, pp. 198-200, map. Beghin, H., et P. Monpaix. Réalisation d'un compas gyrostatique zenithal amorti.

C. E. Acad. Sci., T. 183, No. 20 (15 nov. 1926), Paris, pp. 856-858, ill.

Behm. Behm acoustic sounder for aircraft.

National Advisory Committee for Aeronautics, Technical Memorandums No. 346, Jan. 11, 1926, (mimeographed), Washington, January 1926, p. 5, ill. From "Flugsport," Novemher 11, 1925.

--La sonde aérienne.

L'Aërotecbnique (I/Aéronautiquc, 8me année, No. 87), 4e année, No. 44 (août 1926), Paris, p. 269, ill.

Beij, Karl Hilding. See Eaton, Herbert Nelson, K. H. Beig, W. C. Brorn-bacher, W. W. Frymoyer, H. B. Henrickson, C. L. Seward, and D. H. Strother: Aircraft instruments.

Belgium. The Belgian aerotechnical laboratory at Rhode-Saint-Genèse.

National Advisory Committee for Aeronautics, Technical Memorandums No. 377, Sept. 7, 1926, (mimeographed), Washingtou, Septemtaer 1926, p. 8, ill. From Bulletin of the Technical Service of Aeronautics (Brussels), January 1926.

--Belgian light 'plane competition. Vie Concours International d'Avions

Legers et de Tourisme."

Flight, Vol. 18, No. 16 (Apr. 22, 1926), London, pp. 248-249.

Beltrami, Gian Mario. La guerra aerea nel pensiero tedesco. Rivista Aeronautica, Anno 2, N. 9 (sett. 1926), Roma, pp. 53-75.

Bbnkendorff, Rudolf. Die Ausbildung des Verkehrsfliegers.

Luftweg, Jahrg. 1926, Heft 13 (10. Juli 1926), Berlin-München, pp. 136-137.

Bennett. See North Pole: Byrd et Bennett ont survolé le pôle Nord.

Bennett, Floyd. Our flight over the North Pole.

Aero Digest, Vol. 9, No. 3 (Sept. 1926), New York, pp. 175-177, 261-263, ill.

Benoist. See Blanchet, Georges: Aviateurs contemporains. Le lieutenant de vaisseau Benoist.

Benoit, E. Designing seaplane hulls and floats.

National Advisory Committee for Aeronautics, Technical Memorandums No. 376, Aug. 26, 1926, (mimeographed), Washington, August 1926, p. 17, ill. From "LAéronautique," June 1926.

--Le tracé des carènes d'hydravions.

L'Aérotechnique (L'Aéronautique, 8me année, No. 85), 4c année, No. 42 (juin 1926), Paris, pp. 199-208, ill.

Berardi, Paolo. La guerra aerea nel pensiero tedesco.

Rivista Aeronautica, Anno 2, N. 11 (nov. 1926), Roma, pp. 28-31.

---Possibilità odierne dell' aviazione da bombardamento.

Rivista Aeronautica, Anno 2, N. 7 (luglio 1826), Roma, pp. 60-74.

Berlin. See Sauernheimer: Der Zentralflughafen Berlin.

Bernoulli. «See Hooper, M. S.: Bernoulli's theorem in aerodynamics. Berreur, A. Un moteur à explosion de l'avenir. Aux essais, le moteur "Etchegoin-Causan " a donné 136 cv. à 4.400 t m (poids 95 kg.)

L'Aérophile, 34e année, Nos. 23-24 (Ier-15 déc. 1926), Paris, pp. 361-363, il], (A suivre).

Bertùccioli, Emerico. A vol d'avion; pages de littérature française de l'aviation. Avec préface de Henry Bordeaux. 1 Milano, tratelli Treves edit, tip., 1925, pp. 269.

Bertucciolo, Americo. Petit Dictionnaire illustré de l'Aéronautique Italien-Française et Française-Italienne.

Livorno, Raffaello Giusti, editore-libraio-tipografo, 1925, pp. xiv-165, ill.

Besançon, Georges. L'année aéronautique 1925. Rapport présenté à l'Assemblée générale de l'Aéro-Club de France, le samedi 27 mars 1926.

L'Aérophile, 34e année, Nos. 9-12 (ler-15 mai, ler-15 juin 1926), Paris, pp. 143-156, 179-183, ill.

Besson. L'hydravion Besson, type M. B. 35. Moteur Salmson A. C. 9, 120 cv. L'Aérophile, 34e année, Nos. 7-8 (ler-15 avril 1926), Paris, pp. 121-122, ill.

Betz, Albert. Windenergie und ihre ausnützung durch Windmühlen. Göttingen, Vandenhoeck e Ruprecht, 1926, pp. 64, ill.

- »See Ackeret, J., A. Betz and O Schrenk: Experiments with an airfoil from

which the boundary layer is removed by suction.

Bevan, W. A. New aircraft engines.

Purdue Engineering Review, Vol. 21, No. 3 (Mar. 1926), Lafayette, Ind., pp. 3-6,18, ill. Beyne, J. Les bases physiologiques du rélage des appareils à inhalation d'oxygène utilisés dans l'aéronautique.

IIIô Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 136-140.

- Les épreuves psycho-physiologiques dans l'examen d'aptitude à l'aéronautique.

llle Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 163-166.

- Les modes d'appréciation de la vision nocturne chez l'aviateur.

IHe Congrès International de la Navigation Aérienne, T. 1, Paris, ]1925], pp. 160-162.

Beyne, Mazer, et Grenier. Inhalation d'oxygène pour vol à haute altitude.

Service Technique de l'Aéronautique, Bulletin Technique, No. 35, Juin 1926, pp. 44, ill. Bianconi, F. Navigation aérienne internationale. Répertoire de signes indéformables, permettant d'identifier, sans erreur, les aéroplanes de toutes les nations.

[Paris, Marini et Cie.], 1926, pp. 89, ill.

Bibliography. «See Brockett, Paul: Bibliography of Aeronautics.

Biddlecombe, C. H. The lighting of obstructions dangerous to aerial navigation. Aviation, Vol. 21, No. 22 (Nov. 29, 1926), New York, pp. 9)0-912, ill.

- The lighting of the London continental airway.

Aviation, Vol. 20, No. 15 (Apr. 12, 1926), New York, pp. 550-552, ill.

Bienen, Theodor. Approximate calculation of the static longitudinal stability of airplanes.

National Advisory Committee for Aeronautics, Technical Memorandums No. 387, Nov. 13, 1926, (mimeographed), Washington, November, 1926, pp. 22, ill. From "Zeitchrift für Flugtechnik und Motorluftsehiffahrt" July 28, 1926.

- Eine einfache Methode zur angenäherten Berechnung der statischen

Längsstabilität von Ein- und Doppeldechern.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 14. Heft (2S. Juli 1920), München, pp. 299-306, ill.

- Die rechnerische Ermittlung der Schubverteilung und des Wirkungsgrades für ausgeführte Luftschrauben bei beliebigen Betriebszuständen.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 22. Heft (27. Nov., 1926), pp. 485-487, ill.

Biezeno, C. B., J. J. Koch und C. Koning. Ueber die Berechnung vom freitragenden Flugzeugflügeln.

Zeitschrift für angewandte Mathematik und Mechanik, 6. Jahrg., Nr. 2 (AprU 1926), Berlin, pp. 97-105, ill.

Bingham, Hiram. See United States Congress. Senate. Committee on Commerce: The promotion of commercial aviation. Report to accompany S. 41.

Bingham, Kathleen E. The constitution and age-hardening of some ternary and quaternary alloys of aluminimum containing nickel.'

Aeronautical Research Committee, Reports and Memoranda, No. 1036 (M. 45), Apr., 1926. London, 1926, pp. 21, ill.

Binney, George. With seaplane and sledge in the Arctic. London, Hutchinson & Co., 1925, ill. The account of the 1924 Oxford Arctic expedition.

Bird. The Bird two-seater touring plane.

Aviation, Vol. 21, No. 10 (Sept. 6, 1926), New York, p. 420, ill

Bird flight. See Jones, F. Wood: Bird flight.

Bissell, A. G. Electric arc welding in airplane construction.

Aviation, Vol. 20, No. 13 (Mar. 29, 1926), New York, pp. 446-447, ill.

■- La soudure électrique dans la construction et la réparation des avions.

L'Aërotechnique (L'Aéronautique, 8me année, No. 83), 4e année, No. 40 (avril 1926), Paris, pp. 133-136, ill.

Bjerknes, J. See Amundsen, Roald Engelbregt Gravning : Il mio volo polare fino a 88° lat. nord con relazioni di H. Riiser-Larsen, L. Dietrichson, F. Ramm, J. Bjerknes.

Black, Archibald. Civil aviation in the United States.

Mechanical Engineering, Vol. 48, No. 11 (Nov. 1926), New York, pp. 1092-1094, ill., map.

- European air transport.

Aero Digest, Vol. S, No. 3 (Mar. 1926), New York, pp. 121-123, 170, ill., map.

- The field of aeronautical engineering.

Aviation, Vol. 20, No. 18 (May 3, 1926), New York, pp. 666-607.

—— Flying field equipment for air transport.

Aviation, Vol. 20, No. 15 (Apr. 12, 1926), New York, pp. 553-551, ill.

---Freight containers in air transport.

Aviation, Vol. 21, No. 25 (Dec. 20, 1926), New York, pp. 1038-1039, ill., diagr.

- Leviathans of the air.

Aero Digest, Vol. 8, No. 1 (Jan. 1926), New York, pp. 19-21, 48-49, ill.

- London makes a mistake: unsatisfactory arrangement of buildings and

equipment at Croydon airdrome.

American City, Vol. 34 (Mar. 1926), New York, pp. 263-264, ill., map. '

- Removable cylinders simplify maintenance of air-cooled airplane engines.

Automotive Industries, Vol. 54, No. 12 (Mar. 25, 1926), New York, pp. 528-531, ill.

- Transport aviation.

New York, Simmons-Boardman Pub. Co., 1926, 245 pp., ill.

Blackburn Iris. The Blackburn Iris in public.

The Aeroplane, Vol. 31, No. 14 (Oct. 6, 1926), London, p. 476, ill.

- New British three-engined flying boat. First public demonstration of

Blackburn "Iris."

Flight, Vol. is, No. 40 (Oct. 7, 1926), London, pp. 645-647, ill.,

Blackburn Sprat. The Blackburn Sprat.

The Aeroplane, Vol. 30, No. 14 (Apr. 7, 1926), London, pp. 374-373, ill., diagr.

Blackburn Sprat. The Blackburn "Sprat." A training machine convertible into landplane or seaplane.

Flight, Vol. 18, No. 21 (May 27, 1826), London, pp. 305-308, ill., diagr. National Advisory Committee lor Aeronautics, Aircraft Circulars, No. 11 (mimeographed), Washington, July 1926, pp. 7, ill. From "Flight," May 27, 1926.

Blackburne "Thrush." The Blackburne "Thrush" light plane engine. A 3-cylinder radial of 1,500 c. c. capacity.

Flight, Vol. 18, No. 1 (Jan. 7, 1926), London, pp. 3-6, ill.

Blanchet, Georges. Aviateurs contemporains. Alphonse Duhamel.

L'Aérophila, 34e année. Nos. 7-8 (ler-15 avril 1926), Paris, pp. 97-98, port.

-- Aviateurs contemporains. Amand Pinsard.

L'Aérophila, 34e année. Nos. 9-10 (ler-15 mai 1926), Paris, pp. 129-130, port.

- Aviateurs contemporains. André Girier.

L'Aérophile, 34e année, Nos. 15-16 (ler-15 août 1926), Paris, pp. 225-226, port.

- Aviateurs contemporains. Charley Deschamps.

L'Aérophila, 34e année, Nos. 11-12 (ler-15 juin 1926), Paris, pp. 161-162, port.

- Aviateurs contemporains. Eugène Rénaux.

L'Aérophile, 34e année, Nos. 5-6 (ler-15 mars 1926), Paris, pp. 65-66, port.

- Aviateurs contemporains. Jean Callizo.

L'Aérophile, 34e année, Nos. 19-20 (ler-15 oct. 1926), Paris, pp. 289-290, port.

- Aviateurs contemporains. Le lieutenant de vaisseau Benoist.

L'Aérophile, 34e année, Nos. 21-22 (ler-15 nov. 1926), Paris, pp. 321-322, port.

- Aviateurs contemporains. Maurice Drouhin.

L'Aérophile, 34e année, Nos. 13-14 (lar-15juil. 1926), Paris, pp. 193-194, port.

- Aviateurs contemporains. Pierre Weiss, Roger Latapie.

L'Aérophila, 34a année, Nos. 17-18 (ler-15 sept. 1926), Paris, pp. 257-259, ports.

-- Le colonel Tulasne. (Joseph Tulasne.)

L'Aérophile, 34o année, Nos. 3-4 (ler-15 fêv. 1926), Paris, pp. 33-34, port.

- Le développement de l'aéronautique Japonaise. La collaboration de

l'influence française.

L'Aérophile, 34a année, Nos. 5-6 (ler-15 mars 1926), Paris, pp. 83-85, ill.

- L'hydravion penta-moteurs Richard-Penhoët.

L'Aérophile, 34e année, Nos. 19-20 (ler-15 oct. 1926), Paris, pp. 291-293, ¡11.

Blee, H. H. The spherical balloon. A brief résumé of its development and its contribution to the sciences of aeronautics and meteorology.

U. S. Air Services, Vol. 11, No. 7 (July 1926), Washington, D. C, pp. 48-51, ill.

- Testing aircraft on the speed triangle.

Aviation, Vol. 21, No. 16 (Oct. 18, 1926), Naw York, pp. 666-667, diagr.

Blenk, Hermann. Die Wertung im Deutschen Seeflugwettbewerd 1926. Luftweg, Jahrg. 1926, Heft 14 (25. Juli 1926), Berlin-München, pp. 146-148.

Blenk, Hermann, and F. Liebers. Das Wertungsverfahren im Deutschen Seeflug-Wettbewerb 1926.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 20. Heft (28 Okt. 1926), München, pp. 439-442.

Bleyhoepfer, B. Flugzeugverkauf in China.

Luftweg, Jahrg. 1926, Heft 19 (10. Okt. 1926), Berlin-München, pp. 196-197.

- Luftdienst in China.

Luftweg, Jahrg. 1926, Heft 12 (25. Juni 1926), Berlin-München, pp. 127-128.

Blyth, J. D. Spindled and hollow spars.

Flight, Vol. 18, No. 34 (Aug. 26, 1926), London, pp. 532e-532f.

National Advisory Committee for Aeronautics, Technical Memorandums No. 383, Oct. 15, 1926, (mimeographed), Washington, October 1926, p. 7, tablas. From "Flight," August 26, 1926.

- Stream-line struts. Areas and moments of inertia.

Aircraft Engineer, suppl. Flight, Vol. 18, No. 8 (Feb. 25, 1926), London, pp. HOi-llOj.

Bochahoff, N. P. Investigation of gelatine joiner's glues.

Transactions of the Central Aero-Hydrodynamieal Institute, No. 27, u. S. S. E. Scientific-Technical Department of the Supreme Council of National Economy, No. 159, Moscow, 1926, p. 166, ill.

Bock, S. El motor Diesel en su funcionamiento terrestre y marítimo. Traducción de S. López.

Barcelona, Feliu y Susana, 1926, p. 350, ill. Böhm, Alois Robert. Bericht über die XX. Konferenz der Fédération aéronautique internationale in Rom.

Zeitscbr. Flugt. Motorluftseb., 17 Jahrg., 22 Heft (27 Nov. 1926), München, pp. 479-481.

Boeing. The Boeing mail plane.

The Aeroplane, Vol. 30, No. 5 (Feb. 3, 1926), London, pp. 118-120, ill. Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, pp. 503-504, ill.

Boel, Maurice. Le vol des oiseaux rameurs.

Ille Congrès Intornational de la Navigation Aérienne, T. 2, Paris, [1925], pp. 241-258, ill., tabls.

Boerner. Boerner airship.

Scient. Amer., Vol. 135 (Oct., 1926), New York, pp. 302-304, diagr.

Boetticher, H. Zur Haftpflichtversicherung bei Flugveranstaltungen.

Luftweg, Jahrg. 1926, Heft 18 (25. Sept. 1926), Berlin-München, pp. 190-191. Boffito, Giuseppe. I Dedalei ossia gli assertori ed esperimentatori del volo diretto.

L'Ala d'Italia, Anno 5, N. 11 (Nov. 1926), Milano, pp. 466-467.

- Due romanzi aviatorii del settecento.

L'Ala d'Italia, Anno 5, N. 12 (Die. 1926), Milano, pp. 517-518, ill.

Bolshevism. On Bolshevism in the aircraft industry.

The Aeroplane, Vol. 30, No. 7 (Feb. 17, 1926), London, pp. 161-16-1.

Bombing. See Inglis, Henry B.: Air bombing.

Bonifacio, F. Registri aeronautici per aeromobili civili.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 373-378, ill.

Bonomo, Oscar. L'aviation commerciale, par rapport aux autres moyens de transport.

Paris, Librairie des Sciences Aêronautiques, 1926, p. 120, ill. Bonzani, A. Ministero dell' aeronautica direzione generale del personale militare e delle scuole. Concorso per l'ammissione, per titoli e per esami, alla prima classe del corso normale della R. Accademia Aeronautica.

Roma, addi 30 aprUé 1926, p. 4. Bordeaux, Henry. See Bertùccioli, Emerico: Avol d'avion; pages de littérature française de l'aviation. Avec préface de Henry Bordeaux.

Borriello, Luisa. La nebulosità nelT Europa.

Rivista Aeronautica, Anno 2, N. 11 (nov. 1926), Roma, pp. 128-132.

Bosio, Antonio. Studio sulT ordinamento dei servizi deh' arma aeronautica. Rivista Aeronautica, Anno 2, N. 6 (giugno 1926), Roma, pp. 79-88.

Bouché, Henri. Charles Robin.

L'Aéronautique, 8me année, No. 91 (dee. 1926), Paris, pp. 425-426, port.

--L'industrie aéronautique allemande.

L'Aéronautique, Sme année, No. 89 (oet. 1926), Paris, pp. 317-322, ill.

- La Luft Hansa et ses lignes.

L'Aéronautique marchande (L'Aéronautique, Sine armée, No. 90), 5nie année, No. 59 (nov., 1926), Paris, pp. 381-387, ill.

- Où en est l'aviation? Le Xe Salon de l'Aéronautique.

L'Illustration, 84e année, No. 4371 (11 déc. 1926), Paris, pp. 655-665, ill.

- — Une visite des ateliers Junkers.

L'Aéronautique, 8me année, No. 90 (nov. 1926), Paris, pp. 367-371, ¡1!.

Boultoit and Paul. The Boulton and Paul "Bugle" airplane. (Day bomber).

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 26 (mimeographed) Washington, Decomber, 1926, p. 6, ill. From "Flight," April 23, 1925, and "The Aeroplane" April 29, 1925.

Bouhget. See Le Bourget.

Bournemouth. The Bournemouth race meeting.

The Aeroplane, Vol. 31, No. 8 (Aug. 25, 1920), London, pp. 233-240, ill.

--The Bournemouth summer aviation race meeting.

Flight, Vol. 18, No. 34 (Aug. 26, 1926), London, pp. 525-530, ill.

Bourquin, Maurice. L'organisation internationale des voies de communication.

Hague, Academy of International Law, Recueil des cours, 1924, iv, Paris, 1925, Vol. 5, dp. 159-210, port

Boutiron, P. L'évolution de l'hydraviation française et les grands raids étrangers.

Bulletin Technique du Bureau Veritas, 8me Année, No. 4 (avril 1926), Paris, pp. 63-67, ill. Bot Scouts. See Martin, E. S.: The Boy Scouts in aviation. Boyer, J. A. The corrosion of magnesium and of the magnesium aluminum alloys containing manganese.

National Advisory Committee for Aeronautics, Report No. 248, Feb. 26, 1927, Washington, Government Printing Office, 1926, p. 38, ill.

Brabant, V. G. Épreuve d'attention et aptitude au pilotage. Test de Kraepelin appliqué aux navigateurs aériens.

Hie Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 167-174, ill.

Bradfield, F. B. Measurement of pitching moments due to roll on wings of Avro 504. K.

Aeronautics, Tech. Rept. -Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 250-255, tabls., diagr.

- Pitching and yawing moments with slideslip on a model aeroplane with

zero stagger.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 256-259, tabls., diagr.

- Slot control of an Avro with standard and balanced ailerons.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 228-243, tabls., diagr.

Bradfield, F. B., and A. S. Hartshorn. Test of four thick aerofoils, R. A. F. 30, 31, 32 and 33.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 101-107, tabls., diagr.

- Test of three aerofoils suitable for high speed. A. D. 1, Sloane, and

R. A. F. 26.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926. pp. 95-100. tabls., diagr.

Bradfield, F. B., A. S. Hartshorn, and L. E. Caygill. Wind channel tests of slot and aileron control on a wing of R. A. F. 15 section. Part I. When the central portion of the wing in R. A. F. 15. Part II. When the central portion of the wing is slotted and fitted with a flap.

Aeronautical Research Committee, Reports and Memoranda, No. 10OS (Ae. 214), Nov.. 1925, London, 1926, pp. 30, tabls., diagr.

Bradfield, F. B. Wind tunnel tests on a wing covered with monel metal gauze.

Aeronautical Research Committee, Reports and Memoranda, No. 1932 (Ae. 224), Feb., 1926, London, 1926, p. 2, tabl., diagr.

Bradley, W. F. French airplane speed reducing gear to be used here.

Automotive Industries, Vol. 54, No. 14 (April S, 1926), New York, p. 615, ill.

Brainerd, H. B. Aeroplane landing in a metropolis.

American City, Vol. 34 (Feh. 1926), New York, pp. 187-190, ill., diagr. Literary Digest Vol. 88 (Mar. 20, 1925) New York, pp. 21-22.

Brammer, George. The static equilibrium of airplane pilots.

U. S. Air Services, Vol. 11, No. 8 (Aug. 1926), Washington, D. C. pp. 35-42, ill.

Bramson. Contre la perte de vitesse; le dispositif Savage-Bramson.

L'Aérophile, 34e année, Nos. 17-18 (ler-15 sept. 1926), Paris, pp. 277-278, ill. Brancker, W. Septon. See Cobham, Alan John: Skyways, with a foreword by Major-Gen. Sir. W. Sefton Brancker.

- See Edwards, Ivo Arthyr Exley, and E. Tymms: Commercial air transport;

with a foreword by Air Vicè-Marshal Sir Sefton Brancker.

- See Field, Francis J., ltd.: A commercial & historical atlas of the world's

airways, foreword by Sir W. Sefton Brancker.

Brayton, J. Beating the winds from Paris to London. Travel, Vol. 47 (May 1926). New York, pp. 7-9, ill.

Brazil. See Wegener, Kurt: Flugmöglichkeiten in Brasilien.

Bregtjet, Jacques. L'aviation civile et postale aux Etats-Unis.

L'Aérophile, 34e année, Nos. 7-8 (ler-15 avril 1926), Paris, pp. 102-107, ill. Breguet, Louis. Stabilité longitudinale des avions.

Ille Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 305-386, ill.

Brewer, Robert W. A. Adaptation of the radial air-cooled engine. Aviation, Vol. 20, No. 25 (June 21, 1926), New York, pp. 942-944, diagr.

- The air-cooled radial engine.

Aviation, Vol. 20, No. 23 (June 7,1926), New York, pp. 872-874.

- Some problems in the design of an air-cooled radial engine.

Aviation, Vol. 21, No. 10 (Sept. 6,1926), New York, pp. 410-411.

Bridgman, Leonard. See Grey, Charles Grey, and Leonard Bridgman: All the world's aircraft.

Bripaut, M. V. Plan-programme de propagande en favour de développement de l'aéronautique en Belgique.

Ille Congrès International de la Navigation Aérienne, T. 3, Paris, [1925], pp. 178-189.

Brinsmead. Across Australia in two days. Col. Brinsmead's fine performance in a S. H. 50.

Flight, Vol. 18, No. 3 (Jan. 21,1926), London, p. 38, map.

Brion, M. L'anémographie. Les méthodes d'apprentissage et la sécurité.

L'Aérotechnique (L'Aéronautique, 8me année, No. 89), 4e année, No. 46 (oct. 1926), pp. 338-339, ill.

Bristol. See Mayer, F.: The Bristol high-speed flight to Cairo.

Bristol " Badminton." The Bristol " Badminton " airplane.

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 19. (mimeographed), Washington, Octoher 1926, p. 7, ill. From "Flight," July 8, 1926.

- The Bristol "Badminton." An interesting King's Cup entry.

Flight, Vol. 18, No. 27 (July 8, 1926), London, pp. 411-413, ill., diagr.

Bristol Cherub. The Bristol Cherub air-cooled engine.

Aviation, Vol. 20, No. 15 (Apr. 12, 1926), New York, pp. 555-556, ill.

- The Bristol Cherub, Series III.

The Aeroplane, Vol. 30, No. 1 (Jan. 6, 1926), London, pp. 22-24, ill.

- Le moteur Bristol Cherub type III.

L'Aéronautique, 8me année, No. 83 (avril 1926), Paris, p. 146, ill.

- The new Bristol "Cherub." Series III light plane engine passes 100

hours type tests.

Flight, Vol. 18, No. 2 (Jan. 14, 1926), London, pp. 19-22, ill.

- Over the Alps with a Bristol "Cherub" engine.

Flight, Vol. 18, No. 44 (Nov. 4, 1926), London, pp. 714-716, ill., map.

Bristol Jupiter. Bristol "Jupiter" endurance test. 225 hours 54 minutes flown and 25,074 miles covered without a replacement. Flight, Vol. 18, No. 11 (Mar. 18, 1926), Londou, pp. 163-164, ill.

- The Bristol Jupiter, Mark VI.

The Aeroplane, Vol. 30, No. 12 (Mar. 24, 1926),.London, pp. 311-316, ill.

- The Bristol Jupiter Series VI.

Tho Aeroplane, Vol. 31, No. 2 (July 14, 1926), London, pp. 76-80, ill.

- See Engines: Endurance test of Bristol Jupiter aero engine.

Bristow, Whiston A. The design and construction of metal propellers for aircraft.

Me Congres International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 443-453.

Brittain, Harry. Sir Harry Brittain's flight to Australia. Flight, Vol. IS, No. 5 (Feb. 4, 1926), London, p. 62, ill.

Brochmann, Georg. Flyvniug og luftfahrt.

Oslo, H. Aschehoug & Co. (W. Nygaard), 1926, p. 16S, ill., maps.

Brock. See Weymouth, F. E.: The Brock process of making topographic surveys from the air.

Brockett, Paul. Bibliography of Aeronautics 1923.

National Advisory Committee for Aeronautics, Washington, Government Printing Office, 1926, pp. 144.

- Bibliography of Aeronautics 1924.

National Advisory Committee for Aeronautics, Washington, Government Printing Office, 1926, pp. 114.

Brode, R. B., D. W. Randolph, and F. B. Silsbee. Electrical characteristics of spark generators for automotive ignition.

National Advisory Committee for Aeronautics, Eoport No. 241, Washingtpn, Government Printing Office, 1926, p. 32, tahles, diagrs.

Brombacher, William George. Tables for calibrating altimeters and computing altitudes based on the standard atmosphere.

National Advisory Committee for Aeronautics, Report No. 246, Jan. 14, 1926, Washington, Government Printing Office, 1926, p. 24, tables.

- See Eaton, Herbert Nelson, K. H. Beig, W. C. Brombacher, W. W. Fry-

moyer, H. B. Henrickson, C. L. Seward, and D. H. Strother: Aircraft instruments.

Bromley, Stevens, and William H. Robinson, Jr. The lateral failure of spars.

National Advisory Committee for Aeronautics, Technical Notes No. 232, March 26, 1926 (mimeographed), Washington, March 1926, p. 18, ill., diagrs., tables.

Bruner, D. L., A. C, and W. T. HARniNG. Comparative flood-light test.

Air Corps Information Circular, Vol. 6, No. 571 (Sept. 1, 1926), Washington,"Government Printing Office, 1926, p. 15, ill., diagrs.

Brunner, W. Erscheinungen im Luftmeer.

Zurich, Leipzig und Stuttgart, Rascher & Cie. A.-G.-Verlag, 1926, pp. 102, ill.

Bryant, L. W., and D. H. Williams. Discontinuous flow around the edge of a bluff obstacle.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 674-677, ill., diagr.

- An investigation of the flow of air around an aerofoil of infinite span.

Aeronautical Research Committee, Reports and Memoranda, No. 989 (Ae. 200), Feb., 1924, London, 1926, p. 44, tables., diagr.

--On the effect of inertia on the lateral motion of an aeroplane under the

influence of gusts and control movements.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 216-218, diagr.

Buchanan, J. S. The Schneider Cup race, 1925.

Journ. Roy. Aer. Soc, Vol. 30, No. 1S7 (July, 1926), London, pp. 434-452.

Budgbn, H. P. See Lea, F. C, and H. P. Budgen: The failure of a nickel chrome steel under repeated stresses of various ranges.

Budget. Budget message provides for aviation programs.

Aviatiou, Vol. 21, No. 25 (Dec. 20, 1926), New York, pp. 1032-1033.

Büchner. The fundamental principles of high-speed semi-Diesel engines. Part I, A general discussion of the subject of fuel injection in Diesel engines and detailed descriptions of many types of injection nozzles. Part II, A discussion of the semi-Diesel principle and its application to various types of solid injection engines. Part III, A discussion of fuel mixing and ignition, with special reference to engines with precombustion chambers.

National Advisory Committee for Aeronautics, Technical Memorandums Nos. 356, March 31, 1926; 357, April 8, 1926; 358, April 17, 1926 (mimeographed), Washington, April, 1926, pp 23, 27, 26, ill.

From "Jahrbuch der Brennkrafttechnisehen Gesellschaft," Vol. 5, 1924.

Bdhl-Verville. The Buhl-Verville Airster.

Aero Digest, Vol. 8, No. 3 (Mar., 1926), New York, pp. 130-131, ill.

- The Buhl-Verville airster CW3.

Aviation, Vol. 20, Nos. 4, 14 (Jan. 25, Apr. 5, 1926), New York, pp. 111-112, 505, ill.

- The Buhl-Verville CW 3. An American commercial biplane.

Flight, Vol. 18, No. 14 (Apr. 8, 1926), London, pp. 20S-209, ill.

Bullard, R. L. Preparedness.

Aero Digest, Vol. 9, No. 1 (July 1926), New York, pp. 17, 71, ill.

Bullets. Air disturbances round bullets in flight.

Engineering, Vol. 122, No. 3176 (Nov. 26, 1926), Loudon, p. 657, ill. Bureau or Standards. See Hubbard, Henry D. : National Bureau of Standards; its functions and activities. '

Bureau Veritas, Paris. Registre aéronautique. No. 2, 1926. Paris Bureau Veritas, 1925.

Bureau Veritas, registre international de classification de navires et d'aéronefs.

- Règlement aéronautique.

Paris, Bureau Veritas [1927], pp. li, 386, ill.

Burgess, C. P. New 6,000,000 cubic-foot airships for our Navy.

Scient. Amer., Vol. 135 (Dec. 1926), New York, pp. 418-419, ill., diagr.

Burgess, George K. See Hubbard, Henry D.: National Bureau of Standards;

its functions and activities. Burma. Aerial mapping of Burmese forests.

Engineering, Vol. 122, No. 3166 (Sept. 17, 1926), London, p. 360.

Burzio, F. Una legge aerodinamica stabilita con deduzioni balistiche.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 293-297, ill.

Busk. The Busk studentship in aeronautics.

Engineering, Vol. 121, No. 3148 (Aril 30,1926), London, p. 570. Byrd. See Arctic flight: The Byrd arctic flight.

- See North Pole: Byrd et Bennett ont survolé le pôle Nord.

Byrd, Richard Evelyn. Byrd flies north.

Aero Digest, Vol. 8, No. 5 (May 1926), New York, pp. 257, 318, ill.

- The Byrd flight to the North Pole.

Aviation, Vol. 20, No. 21 (May 24,192S), New York, pp. 780-782, ill., map.

-■ In defense of stunt flying.

World's Work, Vol. 53 (Nov. 1926), Garden City, N. Y., pp. 90-97.

- See North Pole: To the North Pole by aeroplane. Commander Byrd

entertained at the Royal Aero Club.

Byrd et Amundsen. Les survols aériens du pôle nord: Byrd et Amundsen. l'Aéronautique, 8me année, No. 86 Quil. 1926), Paris, pp.223-224, map, ill.

c

C, H. Aviation, cartographie et propagande en Béarn.

L'Aéïophile, 34e année, Nos. 17-18 (ler-15 sept. 1926), Paris, pp. 259-261, ill.

- Deux gestes de Santos-Dumont.

L'Aérophile, 34e année, Nos. 15-16 (ler-15 août 1926), Paris, p. 240, ill.

- La nouvelle campagne du comité française de propagande aéronautique.

L'Aérophile, 34e année, Nos. 13-14 (ler-15 juil. 1926), Paris, p. 202.

C. P. A. 1 bomber. The C. P. A. 1 twin-engine bomber.

Aviation, Vol. 20, No. 9 (Mar. 1, 1926), New York, p. 298, diagr.

Caillol, R. Dosage du phosphore dans les produits de la sidérurgie.

Service Technique de l'Aéronautique, Bulletin Technique, No. 33, Avril 1926, Prance, pu. 36, ill.

Cairo-Karachi. The first imperial air route. Sir Samuel Hoare inaugurates the Cairo-Karachi air route.

Flight, Vol. 18, No. 52 (Dec. 30,1926), London, pp. 862-863, ill., map.

Caldwell, C. Flying cargoes. ,

Pop. Mech., Vol. 45 (Apr. 1926), Chicago, pp. 556-560, ill. Caldwell, Frank Walker. See Jones, E. T., R. Insley, F. W. Caldwell, and R. F. Kohr: Aircraft power plants.

- See Power plants: Aircraft power plants. Part I—Aircraft engines, by

Edward T. Jones, and Robert Insley. Part II—Propellers, by Frank W. Caldwell. Part III—Water ballast recovery, by Robert F. Kohr.

California. See Guggenheim Fund: Grants to California educational institutions.

- See Kites: A passenger-carrying kite.

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

Aeronautical Research Committee, Reports and Memoranda, No. 1013 (E. 18), Nov., 1925; London, 1926, pp. 54, tatals., diagr.

Engineering, Vol. 121, Nos. 3145-3149 (April 9-May 21, 1926), London, pp. 475-476, 509-51», 542-544, 575-676, 605-608, ill., diagrs.

Callizo. Le record d'altitude de Callizo.

L'Aérophile, 34e année, Nos. 17-18 (ler-15 sept. 1928), Paris, pp. 264-265, ill.

Callizo, Jean. See Blanchet, Georges: Aviateurs contemporains. Jean Callizo.

Cam engine. See Fairchild Caminez: The Fairchild Caminez cam engine. Camera. See Eagle: The "Eagle" aerial camera. A new British electrically operated outfit.

Camiciotti, Dante. La frequenza della nebbia in Italia.

Rivista Aeronautica, Anno 2, N. 5 (mag. 1926), Roma, pp. 136-150, tabls.

Caminez, Harold. The Fairchild Caminez engine.

U. S. Air Services, Vol. 11, No. 5 (May 1926), Washington, D. C, pp. 36-37, ill. Campbell, H. D. Capt. Campbell awarded Schiff Trophy.

Aviation, Vol. 21, No. 17 (Oct. 25, 1926), New York, p. 705, ill. Canada. Civil aviation in Canada.

The Aeroplane, Vol. 31, No. 8 (Aug. 25, 1926), London, p. 248.

Flight, Vol. 18, No. 32 (Aug. 12,1926), LoDdon, pp. 494-495.

--Report on civil aviation, including civil operations for other government

departments, undertaken b}' the Royal Canadian Air Force for the year 1925.

Dominion of Canada, Department of National Defense, Ottawa, F. A. Acland, 1926, pp. 102, ill.

- The Trans-Canadian flight.

The Aeroplane, Vol. 31, No. 15 (Oct. 13. 1926), London, p. 502.

Canada. See Elworthy, R. T.: Helium in Canada.

- See Higginbottom, C. : Across Canada by seaplane.

- See Wilson, J. A. : Canada from the air.

Canadian Vickers. Canadian Vickers products.

The Aeroplane, Vol. 30, No. 1 (Jan. 6, 1926), London, pp. 18-22, ill. Cannegieter, H.-G. Une nouvelle méthode de l'emploi du mctéorographe sur avion.

Ille Congre International delà Navigation Aérienne, T. 2, Paris, [1925], pp. 120-121.

Cape Town. See Cobham, Alan John: My flight to the Cape and back.

Capetti, A. Lo sviluppo dei motori con valvole a manicotto.

Rivista Aeronautica, Anno 2, N. S (mag. 1926), Roma, pp. 112-113.

Capon, R. S. The reduction of aircraft performance tests.

Aeronautical Research Committee, Reports and Memoranda, No. 985 (Ae. 197), June, 1925, London, 1926, pp. 20, diagr.

- The representation of aircraft performance tests, using non-dimensional variables, with special reference to the prediction of the effects of change of loading on performance.

Aeronautical Research Committee, Reports and Memoranda, No. 984 (Ae. 196), Nov., 1925, London, 1926, pp. 7, diagr.

Caproni. The Caproni "CA 70" biplane.

Flight, Vol. 18, No. 7 (Feb. 18, 1926), London, pp. 95-96, ill.

--The Caproni CA73 bomber.

Aviation, Vol. 20. No. 26 (June 28,1926) New York, pp. 980-981, ill., diagr. Caràfoli, Elie. See Toussaint, A., et E. Carafoli: Contribution à l'étude de l'écoulement plan des fluides.

- See Toussaint, A., et E. Carafoli: Sur la théorie des ailes sustentatrices.

Carbureted mixtures. See Pignot, André: Recherches sur l'inflammabilité

des mélanges carbures. Carburetors. See Chenoweth, Opie: Carburetor metering jet calibration. —— See Miller, J. M. : Development and test of Stromberg NA-Y5D carburetor

for Curtiss D-12 engine.

- See Miller, J. M.: Development and test of Zenith ED-52 carburetor for

Liberty "12" engine.

- See Poincaré, Leon: Carburation et carburateurs.

- See Taylor, C. Fayette: Carburetors for aircraft engines.

- See Wimplinger: Die Arbeitsweise der Flugmotorenvergaser.

-- See Zénith: Les études de la Société Zénith, les progrès de ses carburateurs et de leurs applications.

Carll, George S., jr. Congress provides for commercial aeronautics. Air commerce act, approved by President, agency through which air transport may come into its own.

U. S. Air Services, Vol. II, No. 7 (July 1926), Washington, D. C, pp. 22-24.

- Congress struggling with air problem.

u, S. Air Services, Vol. 11, No. 3 (Mar. 1926), Washington, D. C, pp. 45-47.

- Congress will be guided by Morrow report.

IT. S. Air Services, Vol. 11, No. 4 (Apr. 1926), Washington, D. C, pp. 21-25. Carriers. See Lexington: The launch of the airplane carrier U. S. S. "Lexington."

- See Rigg, E. H.: The launch of the airplane carrier U. S. S. "Saratoga."

- See Serre, H.: Les bâtiments porteavions.

Carroll, Thomas. Is the supercharger a gadget?

U. S. Air Services, Vol. 11, No. 5 (May 1926), Washington, D. C, pp. 15-19, ill.

Carroll, Thomas, and R. E. Mixon. The effect of tube length upon the recorded pressure from a pair of static orifices in a wing panel.

National Advisory Committee for Aeronautics, Technical Notes No. 251, Nov. 23, 1926 (mimeographed), Washington, November 1926, pp. 4, ill.

Carroll, Thomas. This "flivver of the air" idea. An attempt to clear up some current misapprehensions in this field.

U. S. Air Services, Vol. 11, No. 9 (Sept. 1926), Washington, D. C, pp. 13-18, ill.

Carter, B. C, and A. Swan. Torsional vibration.

Automobile Engineering, Vol. 16, No. 213 (Mar. 1926), London, pp. 86-88, ill.

Case, Harold W. See Joachim, W. F., and Harold W. Case: Tests of several bearing materials lubricated by gasoline.

Caspar. The Caspar C. 29.

Tbe Aeroplane, Vol. 31, No. 3 (July 21, 1926), London, p. 106, ill.

Cassinis, G. Presente e avvenire della fotogrammetria.

L'Aerotecnica, Giornalle ed Atti dell' Associazione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 248-272, ill.

Castagna, Gian Giacoma. Il concetto teorico della sicurezza nella manovra delle grandi masse.

Rivista Aeronautica, Anno 2, N. 7 (luglio 1926), Roma, pp. 41-59.

- Illustrazione del concetto di interdipendenza fra l'esplorazione aerea e

quella terrestre.

Rivista Aeronautica, Anno 2, No. 1 (gen. 1926), Roma, pp. 50-61.

Castleman, R. A. The resistance to the steady motion of small spheres in fluids.

National Advisory Committee for Aeronautics, Technical Notes No. 231, Feb. 26, 1926 (mimeographed), Washington, February 1926, pp. 12, tables, diagrs.

Cat, Mario Aimione. La difesa aerea dell'armata.

Rivista Aeronautica, Anno 2, N. 4 (aprile 1926), Roma, pp. 29-39.

- Servizi speciali per la R. Aeronautica.

Rivista Aeronautica, Anno 2, N. 11 (nov. 1926), Roma, pp. 3-22.

Catapults. See Pratt, Hazen C. : Airplane arresters and catapults.

- See Talenti, Cesare: Osservazioni sanitarie su alcuni piloti durante lanci

di velivoli a mezzo di catapulta.

Cave-Brown-Cave, T. R. The evaporative cooling of aero engines and the

condensation of exhaust gas or water recovery.

Journ. Roy. Aer. Soc, Vol. 30, No. 181,183 (Jan. Mar. 1926), London, pp. 30-69, 229. Cavitation. See Englesson, Elov: The Kaplan and propeller turbines and the

cavitation problem.

Caygill, L. E. 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 Bradfield, F. B., A. S. Hartshorn, and L. E. Caygill: Wind channel

tests of slot and aileron control on a wing of R. A. F. 15 section. Part I. When the central portion of the wing is R. A. F. 15. Part II. When the central portion of the wing is slotted and fitted with a flap.

- 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 L. E. Caygill: Further experiments on honeycomb

radiators.

---See Jones, E. T., and L. E. Caygill : Full-scale and model measurements

of lift and drag of Bristol Fighter with Handley Page slotted wing.

106659—28--3

Cena, Renzo. L'aviere di governo e il governo dell' aviere.

Rivista Aeronautica, Anno 2, N. 11 (nov. 1926), Roma, pp. 186-194.

Central Aero-Hydrodynamical Institute. See Ozeroff, G. A.: The Central

Aero-Hydrodynamical Institute. Champsaur. Le lubrifiant, réchauffement dans le moteur, le circuit de graissage,

1' adaptation à l'avion.

Ille Congrès International de la Navigation Aérienne, T. 3, Paris, [1925], Paris, pp. 133-153.

Chandler, Charles de Forest. Anti-aircraft gunnery.

U. S. Air Services, Vol. 11, No. 1 (Jan. 1926), Washington, D. C, pp. 14-15.

Chandler, Charles de Forest, and W. S. Diehl. Balloon and airship gases; pt. 1, hydrogen and helium production processes, the compression and storage of gases; pt. 2, physics of gases.'

Ronald Aeronautic Lihrary, New York, Ronald Press Company, 1925, pp. s, 226, ill.

Chandler, Charles de Forest. See Upson, Ralph H., and Ch. de Forest Chandler: Free and captive balloons. Part I: Free balloons, by Ralph H. Upson. Part II: Captive balloons. Part III: Fabrics for gas envelopes, by Ch. de Forest Chandler. Chapligin, S. A. On the action of the two-dimensional airstream on a cylindrical aerofoil moving in it.

Transactions of the Central Aero-Hydrodynamical Institute, No. 19, U. S. S. R. Scientific-Technical Department of the Supreme Council of National Economy, No. 126, Moscow, 1926, p. 69.

Charcot et P. Idrac. Sur un phénomène de dépression atmosphérique produit sous le vent d'un obstacle élevé.

C. R. Acad. Sci., T. 163, No. 18 (3 nov. 1926), Paris, p. 712.

Chenoweth, Opie. Carburetor metering jet calibration.

Air Corps Information Circular, Vol. 6, No. 569 (Sept. 1, 1926), Washington, Government Printing Office, 1926, p. 13, ill., diagrs.

Chicago. Air commerce in Chicago wins triple impetus. Aviation transport interests link efforts for lake front airport.

U. S. Air Services, Vol. 11, No. 2 (Feh. 1926), Washington, D. C, pp. 32-33.

Chicanot, E. L. Flying with the sealing fleet.

Aero Digest, Vol. 8, No. 6 (June 1926), New York, pp. 332-333, ill. China. Quelques notes sur l'aéronautique chinoise. L'organisation de l'aviation Manchoue.

L'Aéronautique, Smc année, No. 86 (juil. 1926), Paris, pp. 2Ü7243, ill.

- See Bleyhoeffer, B.: Flugzeugverkauf in China.

- See Bleyhoeffer, B. : Luftdienst in China.

Cierva. L'autogiro La Cierva.

Rivista Aeronautica, Anno 2, N. 3 (marzo 1926), Roma, pp. 102-113, ill.

—■— Les essais de l'autogyre de la Cierva, a Paris.

L'Aérophile, 34e année, Nos. 3-4 (ler-15 fev. 1926), Paris ,p. 40, ill.

Cierva, Juan de la. The development of the Autogyro.

Journ. Roy. Aer. Soc., Vol. 30, No. 181, (Jan. 1926), London, pp. 8-29, ill.

Cirrus. The A. D. C. Cirrus Mark II engine.

The Aeroplane, Vol. 31, No. 17 (Oct. 27, 1926), London, pp. 558-560, ill.

- The "Cirrus Mark II" engine.

Flight, Vol. 18, No. 45 (Nov. 11,1926), Loudon, pp. 728-731, ill., diagr.

Civil aeronautics. Encouragement of civil aeronautics. Department of Commerce has big problem for fostering civil aviation. > ■ Aviation, Vol. 21, No. 15 (Oct. 11, 1926), New York, pp. 636-640.

Civil aviation. Aeronautica civile. Albania. Condizioni delle concessioni aviatorie in Albania. Francia. Concorso per velivoli commerciali. Germania. La situazione geografica dell' Europa dal punto di vista aeronautico. Grecia. Comunicazioni aeree della Grecia con l'Europa, l'Asia e l'Egitto. Inghilterra. Da Londra alla Città del Capo. Il primo servizio aereo Londra-Parigi. Europa e Stati Uniti. Trasporti aerei in Europa e negli Stati Uniti. Rivista Aeronautica, Anno 2, N. 1 (gen. 1926), Roma, pp. 127-147. (

- Analysis of civil flying in the United States.

Aviation, Vol. 20, No. 19 (May 10,1926), New York, pp. 709-710.

- Civil aviation; a report by the Joint Committee' on civil aviation of the

U. S. Department of Commerce and the American Engineering Council.

New York, McGraw-Hill Book Company, inc., 1926, pp. rvii, 189, ill., maps, tabls., diagrs.

- Civil aviation. Annual report from April 1, 1925 to March 31, 1926.

Flight, Vol. 18, No. 32 (Aug. 12, 1923) London, pp. 492-494.

- Civil aviation, 1925-1926.

The Aeroplane, Vol. 31, No. 8 (Aug. 25, 1926), London, p. 246.

- Does America lead the world in civilian aviation?

Literary Digest, Vol. 88 (Jan. 9, 1926), New York, pp. 46-47.

- New plans for civil aviation.

Literary Digest, Vol. 90 (Aug. 28, 1926), New York, p. 8.

- On civil aviation.

The Aeroplane, Vol. 30, No. 14 (Apr. 7,1926), London, pp. 357-364.

- On civil aviation again.

The Aeroplane, Vol. 31, No. 6 (Aug. 11,1926), London, p. 169-172.

- Our civil aviation now leading the world.

Literary Digest, Vol. 91 (Nov. 13,1926), New York, pp. 23-24, ill.

- Das Verkehrsflugzeug.

Berlin, Richard Carl Schmidt & Co., 1926, p. 207, ill. —— See Australia: Civil aviation in Australia.

- See Baciocchi, Alighiero: Italy's civil aviation.

- See Black, Archibald: Civil aviation in the United States.

- See Breguet, Jacques: L'aviation civile et postale aux Etats-Unis.

- See Canada: Civil aviation in Canada.

- See Canada: Report on civil aviation, including civil operations for other

Government departments, undertaken by the Royal Canadian Air Force for the year 1925.

- See Commercial aeronautics.

- See Germany: German civil aviation.

- See Kinnosuke, Adachi: Japan's civil aviation.

- See Sayers, W. H.: The economics of air transport.

—— See United States Congress. House. Committee on Interstate and Foreign Commerce: Civil aviation. Report. To accompany S. 41.

- See United States Department of Commerce.

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.

Aeronautical Research Committee, Reports and Memoranda, No. 990 (Ae. 201), Sept., 1925, London, 1926, p. 6, tabls., diagr.

Clark, D. B., L. P. Coombes, H. Glauert, and A. S. Hartshorn. Lift and drag of Junker monoplane. Comparison of model with full scale results.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 336-345, ill., diagr., tabls.

Clarke, N. R. Are we over the Pole?

Seient. Amer., Vol. 135 (Sept. 1926), New York, pp. 188-189, ill.

Clay, W. L. Commercial aviation in the national defense.

Aviation, Vol. 21, Nos. 20-21 (Nov. 15-22,1926), New York, pp. 834-836, 877-879, ill., diagr.

Claydon, Arthur W. Cloud studies.

New York, E. P. Dutton & Co.

Reviewed in U. S. Air Services, Vol. 11, No. 5 (May, 1926). Clifford, G. H. W. See Pippard, A. J. Sutton, and G. H. W. Clifford. An

experimental investigation into the properties of certain framed structures

having redundant bracing members. Report No. 4. Clothes. See Mills, T. B.: Clothing for the flying man.

Clouds. See Crestani, Giuseppe: Le nubi temporalesche e la navigazione aerea.

Coast Guard. Coast Guard air service inaugurated.

Aviation, Vol. 21, No. 25 (Dec. 20, 1926), New York, p. 1033.

- Coast Guard starts its own air service with Loening amphibians.

U. S. Air Services, Vol. 11, No. 12 (Dec. 1926), Washington, D. C, p. 37, ill.

Cobham, Alan John. England-Australia-England.

Flight, Vol. 18, No. 40 (Oct. 7, 1926), London pp. 649-660, ill., map.

--A knight of the air.

Aero Digest, vol. 9, No. 5 (Nov. 1926), New York, p. 393, ill.

--London-Captetown-London.

Aero Digest, Vol. 8, No. 4 (Apr. 1926), New York, p. 196, ill., map.

- London-Capetown-London. Alan Cobham's splendid achievement.

Flight, Vol. 18, No. 11 (Mar. 18, 1926), London, pp. 155-161, ill., map.

—— The London-Capetown survey flight. Alan Cobham completes his task. Flight, Vol. 18, No. 8 (Feb. 25, 1926), London, pp. 108-109, ill, map.

--Long-distance aeroplane flights.

Flight, Vol. 18, No. 12 (Mar. 25, 1926), London, p. 177.

- Long-distance flying.

Journ. Roy. Aero. Soc, Vol. 30, No. 188 (Aug. 1926), London, pp. 482-494.

- My flight to the Cape and back.

London, A. and C. Black, Ltd., 1926, pp. vi. 70.

- On Mr. Cobham.

The Aeroplane, Vol. 30, No. 11 (Mar. 17, 1926), London, pp. 273-280, ill.

--Sir Alan Cobham honored at aviation dinner.

Aviation, Vol. 21, No. 24 (Dec. 13, 1926), New York, pp. 992-993, ill.

- Skyways, with a foreword by Major-Gen. Sir W. Sefton Brancker.

London, Nishet & Co., ltd., 1926, pp. z, 314, ill., port.

Colby, Elbridge. Aerial law and war targets.

American Journal of International Law, Vol. 19,1925, Concord, N. H., pp. 702-715.

Cole. The Cole sport commercial airplanes.

Aviation, Vol. 21, No. 15 (Oct. 11, 1926), New York, p. 642, ill.

Coleman, Donald G. N. A. C. A. flight-path-angle and air-speed recorder.

National Advisory Committee for Aeronautics, Technical Notes No. 233, April 13, 1926 (mimeographed) Washington, April 1926, pp. 11, ill.

Colombia. See Georgii, Walter, und Heinrich Seilkopf: Ergebnisse einer flugwissenschaftlichen Forschungsreise nach Columbia (S. A.).

--See Georgii, Walter: Flugwissenschaftliche Forschungsreise nach Kolum-

bia (S. A.)

--See Penfield, W. S.: Into the heart of Colombia by hydroplane.

—- See Zimmerman, M. M.: Traveling by air in Colombia.

Colonial Air Transport. Three months operation of Colonial Air Transport. Aviation, Vol. 21, No. 17 (Oct. 25, 1926), New York, pp. 703-705, ill.

Combustion. See Pignot, André: Recherches sur l'inflammabilité des mélanges carbures.

Commerce Department. The Department of Commerce air plans.

Aero Digest, Vol. 9, No. 4 (Oct. 1926), New York, pp. 329-330.

Commercial aeronautics. Air transportation: When will it pay?

World's Work, Vol. 52 (July 1926), Garden City, N. Y., pp. 239-240.

- American commercial flying. Mileage statistics of commercial pilots

operating throughout the country.

Aviation, Vol. 20, No. 14 (Apr. 5,1926), New York, pp. 522, 524.

- Coolidge-Ford aviation alliance.

Literary Digest, Vol. 90 (Aug. 21, 1926), New York, pp. 17-18.

--Conference of air transport officials.

Aviation, Vol. 20, No. 10 (Mar. 8, 1926), New York, pp. 333-334, ill.

- Deutsche Luftverkehrstatistik, 1925.

Berlin, Kadetzki.

- Foreign markets for American aircraft.

Aviation, Vol. 20, No. 11 (Mar. 15, 1926), New York, p. 374.

- The future of air transport.

Engineering, Vol. 121, No. 3149 (May 21, 1926), London, pp. 598-599.

- Glidden tour of the air.

Literary Digest, Vol. 90 (Sept. 4, 1926), New York, pp. 12-13, ill., map.

- Grosser Luftverkehrs-Atlas.

Berlin, Verlag für Bösen und Finanzlitteratur A. G.

-- L'industrie aéronautique.

L'Aérotechnique (L'Aéronautique, 8me année, No. 80), 4e année, No. 37 (jan. 1926), Paris, pp. 43-16, ill.

- Lightplanes and private flying.

Aviation, Vol. 21, No. 24 (Dec. 13, 1926), New York, pp. 999-1000, Ul.

- The Los-Angeles—San Diego airline.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, pp. 494-496, Ul.

- N. A. T. contracts with American Express. New plan national in scope.

Aviation, Vol. 21, No. 20 (Nov. 15, 1926), New York, p. 850.

- President Coolidge approves two commercial transcontinental air routes.

U. S. Air Services, Vol. 11, No. 9 (Sept. 1926), Washington, D. C, pp. 36-3S.

- Private flying. Discussion at Royal Aero Club dinner.

Flight, Vol. 18, No. 8 (Feb. 25, 1926), London, pp. 105-107.

- A review of the American aircraft industry.

Aviation, Vol. 21, No. 5 (Aug. 2, 1926), New York, pp. 180-181, ill.

- Shrinking globe.

Nation, Vol. 123, (Aug. 4,1926), New York, pp. 111-112.

- Technical aspects of commercial airships.

Engineering, Vol. 121, No. 3137 (Feb. 12, 1926), London, p. 206.

- Trafic des compagnies françaises en 1925.

L'Aéronautique marchande (L'Aéronautique, 8me année, No. 82), 5me année, No. 5 (mars 1926), Paris, pp. 114-116.

- Les transports aériens français.

L'Aéronautique marchande (L'Aéronautique, 8me année, No. 80), 4me année, No. 48 (jan. 1920), Paris, pp. 33-38, ill.

- World's greatest aerial taxi-driver.

' Literary Digest, Vol. 91 (Dec. 4, 1926), New York, pp. 73-76.

- «See Civil aviation.

- See Cowley, W. L. : Aircraft transport economy.

- «See Field, Francis J., ltd.: A commercial & historical atlas of the world's

airways, foreword by Sir W. Sefton Brancker.

Commercial aeronautics. See Fisher von Poturzyn, Friedrich Andreas: Luftbarrikaden, die befreiungspolitik der deutschen luftfahrt.

- See Great Britain. Air Ministry: The approach towards a system of

imperial air communications. Memorandum' by the Secretary of State for Air, laid before the Imperial Conference, 1926, together with the Report of the Imperial Air Communications special sub-committee.

•- »See Gymnich, A.: Deutscher und englischer Verkehrsflug zeugbau.

- See Italy: Ordinamento degli ufBci del Ministero delT aeronautica. (Decreto del Ministero dell' aeronautica in data 10 settembre 1925).

- »See Köhler, Raimund: Leipzig und Halle im Luftverkehr.

- »See Luley: Die Einwirkungen des Luftverkehrsgesetzes auf das Eigen-

tumund der Ausgleich.

- »See Ripert, Georges: La responsabilité du transporteur aérien d'après le

projet de la Conférence Internationale de Paris de 1926.

- »See Russell, Roy E.: Will the public pay?

- »See Spaight, James Molony : Aircraft and commerce in war.

- »See United States Congress. Conference Committees, 1925-1926: Air

commerce act of 1926. . . . Conference report. To accompany. S. 41.

- »See United States Congress. Senate. Committee on Commerce: The

promotion of commercial aviation. Report to accompany S. 41.

- »See United States. President's Aircraft Board: Report of President's

aircraft board. November 30, 1925.

- »See Wernekke: Der frnazösische Flugverkehr.

- »See Wernekke: Vom englischen Flugverkehr.

Commercial aviation. The air mail fathers commercial aviation.

Aviation, Vol. 21 No. 16 (Oct. 18, 1926), New York, pp. 668-669.

- On commercial aviation.

The Aeroplane, Vol. 31, No. 7 (Aug. 18, 1926),.London, pp. 194-196.

■- Traffic in the skies.

New Republic, Vol. 48 (Aug. 25, 1926), New York, pp. 7-8.

- »See Black, Archibald: European air transport.

- »See Black, Archibald: Transport aviation.

- »See Bonomo, Oscar: L'aviation commerciale.

- »See Edwards, Ivo Arthyr Exley, and F. Tymms: Commercial air transport.

- »See Europe: Commercial aviation in North Central Europe.

- »See Germany: Reichsluftkursbuch. . . . Ausg. Nr. 1. Anfang juni 1925.

- »See International Chamber of Commerce: Commercial aviation. . . .

Third congress, Brussels, June 21-27, 1925.

- »See McLaughlin, George F.: American commercial airplanes.

- »See Vivent, Jacques: Notre aviation marchande, avec une carte générale

du réseau aérien.

Compagnie Internationale de Navigation Aérienne. La C. I. D. N. A.

L'Aéronautique marchande (L'Aéronautique, 8me année, No. 83), 6me année, No. 52 (avril 1926), Paris, pp. 147-151.

Compas. »See Beghin, H., et P. Monfaix: Réalisation d'un compas gyrostatique zenithal amorti.

Compression rubbers. »See Dowty, G. H.: Compression.rubbers.

Congrès International de la Navigation Aérienne. Ille Congrès International de la Navigation Aérienne organisé sous les auspices de la Direction de l'Aéronautique civile .avec le concours de l'Aéro-Club de Belgique, Bruxelles, 6-10 octobre 1925. Tome 1er, II, III. <

Paris, Etienne Chiron, Editeur, [1925], pp. 403, 579, 524, fll.

- Ili Congresso Inter, di Navigazione Aerea, Bruxelles, 6-10 ottobre 1925.

Relazione dei Delegati dell' A. I. D. A.

L'Aerotecnica, Voi. 6, N. 1 (gen.-feb. 1926), Pisa, pp. 23-38.

Connecticut. Motor vehicle and aircraft laws; revised to July I, 1925. Hartford, Connecticut Commissioner of motor vehicles, 1925, p. 160.

Constantin, L. Les empennages.

L'Aêrophile, 34e année, Nos. 9-10 (ler-15 mai 1926), Paris, pp. 140-141, ill.

- Sur un cas particulièrement dangereux de "perte de vitesse" ou comment

un pilote, en conservant scrupuleusement sa vitesse, peut aboutir à la "perte de vitesse."

L'Aêrophile, 34e année, Nos. 7-8 (ler-151 avril 1926), Paris, pp. 114-115, ill.

- Tail planes.

National Advisory Committeo for Aeronautics, Technical Memorandums No. 373, Aug. 5, 1926 (mimeographed), Washington, August, 1926, p. 7. From "L'Aêrophile," May 1-15,1926.

Construction. See Rohrbach, A.: Entwurf und Aufgaben des Leichtbaues.

Control. Airplane arresters. <

Scient. Amer., Vol. 135 (Aug. 1926), New York, p. 149, ill.

- The lateral control of stalled aeroplanes. General report by the stability and control panel.

Aeronautical Eeseareh Committee, Eeports and Memoranda, No. 1000, Sept., 1925, London, 1926, p. 43, iliagr.

- See Courtne}', Frank T.: Stalled flight and control.

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

B.A.T. "Batam" aeroplane with special reference to spinning accidents. Part 1.—Longitudinal control and rolling experiments.

- See Lateral control: The lateral control of stalled aeroplanes.

- See Page, W. Laurence: On the control of airplanes at low speed.

Cooch, Herbert. Cooch aerial navigation apparatus.

Hie Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 110-114, ill.

- Landing aircraft in fog.

Jonrn. Eoy. Aer. Soc, Vol. 30, No. 186 (June, 1926)., London, pp. 365-393. Coolidge Aircraft Board. President's board advocates expansion of civil aviation.

u. S. Air Services, Vol. 11, No. 1 (Jan., 1926), Washington, D. C, pp. 36-52. Coombes, L. P. See Clark, D. B., L. P. Coombes, H. Glauert, and A. S. Hartshorn: Lift and drag of Junker monoplane. Comparison of model with full scale results.

■- See Douglas, G. P., and L. P. Coombes: The measurement of torque

grading along an airscrew blade. Coppa d'Italia. The Coppa d'Italia. Italian light plane trophy definitely

won by Czechoslovakia.

Flight, Vol. 18, No. 45 (Nov. 11, 1926), London, p. 727, ill.

Corelli, M. R. La sostituzione della vernice a finire con la vernice a tendere.

L'Aerotecnica, Giornale Atti ed dell'Associazione Italiana di Aerotecnica, Voi. 6, N. 4 (luglio 1926), Pisa, pp. 285-287, tabls.

Corrioan, J. F. Aeroplane thermometers. Some uses for thermometers in modern aircraft.

Aero Field, Vol. 1, No. 9 (Dec. 192U), London, pp. 201, 207.

Corrigan, J. F. Why curved propeller blades? A straightforward explanation of a practical point.

Aero Field, Vol. 1, No. 6 (Sept., 1926), London, pp. 129,142.

Courtney, Frank T. Note sur le pilotage de l'autogire.

L'Aérotechnique (L'Aéronautique, 8me année, No. 80), 4e année, No. 37 (Jan., 1926), Paris, pp. 39-40, ill.

- Stalled flight and control.

Aircraft Engineer suppl. Flight, Vol. 18, No. 8 (Feb. 25,1926), London, pp. 110h-110i.

Cowley, W. L. Aircraft transport company.

Journ. Eoy. Aer. Soc, Vol. 30, No. 183 (Mar., 1926), London, pp. 160-228, diagr.

- A note on the "Katzmayr effect"; that is, the effect on the characteristics of an aerofoil produced by an oscillating airstream.

Aeronautics, Tech. Kept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 165-169, tabls., diagr.

- .See Fage, A., and W. L. Cowley: Experiments to measure the variation,

with speed and size, of the forces of an aerofoil of thick section. (German aerofoil, No. 420.)

Coyecque, M. Notions de meteorologie generale et nautique. Paris, Berger-Levrault, édit.

Cram, Ralph. Leave it to the pilot.

Aero Digest, Vol. 8, No. 5 (May, 1926), New York, pp. 258-259, 309, ill.

Cranwell IV. The Cranwell light aeroplane IV. An interesting machine built by amateurs.

Flight, Vol. 18, No. 35 (Sept. 2, 1926), London, pp. 548-550, ill., diagr. Cranz, C. Lehrbuch der Ballistik.

Berlin, Julius Springer, 1925, p. 712, ill.

Crestani, Giuseppe. Le nubi temporalesche e la navigazione aerea.

Rivista Aeronautica, Anno 2, N. 8 (agosto 1926), Roma, pp. 45-51, ill.

Crocco, G. Arturo. Possibilità di superaviazione.

Atti della Reale Accademia Nationale dei Lincei, Anno 123, 1926, Serie Sesta, Rendiconti, Classe di Scienze fisiche, Matematiche e naturali, Voi. 3, Fase. 7 (aprile 11,1926), Roma, pp. 363-370.

- Il proiettile a reazione.

Rivista Aeronautica, Anno 2, N. 3 (marzo 1926), Roma, pp. 1-4.

- Il sostentamento degli aerei e la quota raggiungibile.

Rivista Aeronautica, Anno 2, N. 7 (luglio 1926), Roma, pp. 18-40.

- La stabilità delle aeronavi.

Rivista Aeronautica, Anno 2, N. 5 (mag. 1926), Roma, pp. 3-32, ill., diagrs.

- La velocità degli aerei e la superaviazione.

Revista Aeronautica, Anno 2, N. 9 (sett. 1926), Roma, pp. 5-52, il!., diagrs. Cruchet, René. Influence des variations de la pression atmosphèrique sur la pression artérielle et le mal des aviateurs. Róle régulateur des inhalations d'oxygène.

Ille Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 184-189. Crowley, J. W., Jr., and K. M. Ronan. Characteristics of a twin-float seaplane during take-off.

National Advisory Committee for Aeronautics, Report No. 242, Sept. 30,1926, Washington, Government Printing Office, 1926, pp. 16, ill., diagrs.

—— Characteristics of a boat type seaplane during take-off.

National Advisory Committee for Aeronautics, Report No. 226, April 23, 1926, Washington, Government Printing Office, 1926, pp. 11, ill., diagrs.

Crowley, J. W., Jr., and S. J. De France. Pressure distribution on the C-7 airship.

National Advisory Committee for Aeronautics, Report No. 223, July 1926, Washington, Government Printing Office, 1926, pp. 41, ill., tables.

Croydon. Croydon air demonstration. Impressive spectacle staged before Dominion representatives.

Flight, Vol. 18, No. 43 (Oct. 28, 1926), London, pp. 698-7Ü2, ill.

- Night flying. An important factor in airmail development.

Aero Field, Vol. 1, No. 9 (Dec. 1926), London, pp. 193-195, ill.

- See Black, A.: London makes a mistake; unsatisfactory arrangement of

building and equipment at Croydon airdrome.

Cuatro Vientos. See Moreno-Caracciolo, M.: Laboratoire de Cuatro Vientos. Curry, John F. McCook Field review. Many interesting designs and new equipment developed at McCook Field during the past year. Aviation, Vol. 20, No. 2 (Jan. 11, 1926), New York, pp. 47-49, ill.

- An outline of aeronautical development.

Aviation, Vol. 21, No. 5 (Aug. 2, 1926), New York, pp. 174-175, ill.

- What McCook Field means to aviation.

U. S. Air Services, Vol. 11, No. S (Aug. 1926), Washington, D. C, pp. 43-44, ill.

- See Hourwich, Iskander, and W. J. Foster: Air service engine handbook

Curtiss. The Curtiss Carrier Pigeon and Lark.

Aviation, Vol 20, No. 14 (Apr. 5, 1926), New York, pp. 502-503, ill.

- The Curtiss pursuit training plane.

Aviation, Vol. 21, No. 1 (July 5, 1926), New York, pp. 24-25, ill.

Curtiss D-12. British accept Curtiss D-12 engine as service equipment.

U. S. Air Services, Vol. 11. No. 7 (July 1926), Washington, D. C, pp. 28-29, ill.

- The Curtiss D-12 engine in Gt. Br tain.

Aviation, Vol. 20, No. 25 (June 21, 1926), New York, p. 945, ill.

Curtiss Falcon. The Curtiss Falcon observation plane.

Aviation, Vol. 21, No. 3 (July 19, 1926), New York, pp. 92-94, ill.

- Curtiss Falcon plane revised.

Aviation, Vol. 21, No. 10 (Sept. 6, 1926), New York, p. 412, ill.

- "Falcon" observation plane undergoing severe tests.

U. S. Air Services, Vol. 11, No. 7 (July 1926), Washington, D. C, pp. 40-42, ill.

- Two American high-performance two-seaters.

The Aeroplane, Vol. 30, No. 15 (Apr. 14, 1926), I^ondon. pp. 398-399, ill. Curtiss Falcon and Douglas 0.2.

Curtiss fuel tank. The Curtiss duralumin fuel tank.

Aviation, Vol. 21, No. 6 (Aug. 9, 1926), New York, p. 250.

Customs. See Helmstede, Jonkheer V. d. Berch: Réglementation douanière, aéronautique internationale.

- See Landrien, Félix: Réglementation douanière internationale. Note au

sujet des décisions prises par le 7e Congrès du Comité Juridique International à Lyon en septembre 1925.

Cyclone. See Beardmore "Cycone:" The Beardmore "Cyclone" aero engine. Cylinders. See Frey, Kurt: Experiments with rotating cylinders in combination with airfoils.

--See Wolff, E. B., and C. Koning: Tests for determining the effect of a

rotating cylinder fitted into the leading edge of an airplane wing.

Czechoslovakia. See Coppa d'Italia: The Coppa d'Italia. Italian light plane trophy definitely won by Czechoslovakia.

- See McLaughlin, George F.: Czccho-Slovakian planes.

D

D., Ch. La première liaison aérienne France-Madagascar.

L'Illustration, 84e année. No. 1371 (11 dec. 1920), Paris, p. 6C9, ill., map.

106659—28-4

D. H. 50. The D. H. 50 and air line work.

The Aeroplane, Vol. 30, No. 10 (Mar. 10, 1920), London, pp. 264-205, 111.

- The D. H. 50 seaplane.

The Aeroplane, Vol. 30, No. 13 (Mar. 31, 1926), London, p. 344, ill.

- Seaplane for G. G. of Australia. The ubiquitous D. H. 50 fitted with

floats.

Flight, Vol. 18, No. 13 (Apr. 1, 1926), London, pp. 188-190, ill. D. H. 66 "Hercules." A new machine for Empire aviation. The D. H. 66 "Hercules," three Bristol "Jupiter VI" engines.

Flight, Vol. 18, No. 44 (Nov. 4, 1926), London, p. 719, ill.

Daily Mail competition. On the £5,000 competition.

The Aeroplane, Vol. 31, No. 12 (Sept. 22, 1926), London, pp. 373-380, ill.

- On the start of the "Daily Mail" competition.

The Aeroplane, Vol. 31, No. 11 (Sept. 15, 1926), London, pp. 333-348, ill.

- See Sayers, W. H.: Lessons from "The Daily Mail" competition.

Daimler, L. 20. The vindication of the light plane. A German two-seater

crosses the Alps in mid-winter.

Flight, Vol. 18, No. 19 (May 13, 1926), London, pp. 285-287, ill, map.

Daniel Guggenheim Fund. The Daniel Guggenheim Fund for the promotion of aeronautics purposes prizes amounting to between $150,000 and $200,000 for inventions increasing the safety of airplanes.

Science, Vol. 64, No. 1644 (July 2, 1926), Garrison, N. Y., p. 15.

- See Guggenheim, Daniel: The Daniel Guggenheim fund for the promotion

of aeronautics.

Daniels, Samuel, and F. T. Sisco. Metallurgy in aircraft construction. Pt. I. The metallurgy of iron and steel, by F. T. Sisco. Pt. 2. The metallurgy of non-ferrous materials and the joining of metallic materials. Dayton, O., 1925, pp. 5, 13-262, ill., tabls., diagrs.

Davidson, C. Graham. Cornerstone of Buffalo airport laid.

Aviation, Vol. 21, No. 15 (Oct. 11, 1926), New York, p. 644, ill.

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

27 and R. A. F. 28. Davis, W. Conquest of the North Pole.

Current History Magazine, New York Times, Vol 24 (July 1926), New York, pp. 592-594.

Davis, Warren Jefferson. Highways and airways, their relation to commerce and national defence.

Whittier, Newsprint [1926], pp. 92.

- Putting laws over wings.

San Diego, Cal., The author, 1926, pp. 96.

Deafness. See Accorinti, Vincenzo: Esiste una sordita professionale nell' aviatore?

De France, S. J. See Crowley, Jr., J. W., and S. J. De France: Pressure distribution on the C-7 airship.

De Havilland. The De Havilland "Moth."

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 18 (mimeographed), Washington, October 1926, pp. 5, ill. From "Flight," March 5, 1925.

--A new De Havilland commercial aeroplane. The D. H. 66 with three

Bristol "Jupiter" engines.

Flight, Vol. 18, No. 23 (June 10, 1926), London, pp. 329-333, ill., diagr. National Advisory Committee for Aeronautics, Aircraft Circulars, No. 10, (mimeographed), Washington, July 1926, pp. 9, ill. From "Flight," June 10, 1926.

De Havilland Hercules. The De Havilland Hercules.

The Aeroplane, Vol. 31, No. 15 (Oct. 13, 1926), London, pp. 496-502, ill., diagr.

- The de Havilaud Hercules air liner.

Aviation, Vol. 21, No. 23 (Dec. 6, 1926), New York, pp. 958-959, ill.

De Santis, S. Più' alto più' oltre. Il miraggio della alte quote.

L'Aerotecnica, Supplemento de L'Ala d'Italia, Anno 5, N. 11 (Nov. 1926), Milano, pp .4si— 484.

- Replica sul volo altocorsiero.

l'Ala d'Italia, Anno 5, N. 12 (Die. 1926), Milano, pp. 526-527.

- La stabilità dei proietti aerei sulla propria traiettoria.

L'Ala d'Italia, Anno 5, N. 12 (Die. 1926), Milano, pp. 521-523.

Debus, W. Die Sportfliegerei am Scheidewege.

Luftweg, Jahrg. 1926, Heft s (25, April 1926), Berlin-München, pp. 84-85

Delcambre, E. Quelques accidents dont la meteorologie peut éviter le retour. Ille Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 265-270.

Denham, A. F. Cam is used instead of crank train in radial airplane engine. Automotive Industries, Vol. 54, No. 21 (May 27, 1926), New York, pp. 891-893, ill.

- New Vickers "Vanguard." Largest passenger carrying plane in world.

Automotive Industries, Vol. 54, No. 9 (Mar. 4, 1926), New York, p. 40s, ill.

- New Ryan monoplane permits change of engines in 20 minutes.

Automotive Industries, Vol. 55, No. 5 (July 29, 1926), New York, pp. 174-175, ill.

- Sikorsky Trans-Atlantic airplane a redesigned "Freighter."

Automotive Industries, Vol. 55, No. 12 (Sept. 16, 1926), New York, pp. 462-463, ill.

-■ Wright "J" type engine is result of extensive service tests.

Automotive Industries, Vol. 55, No. 10 (Sept. 12, 1926), New York, pp. 380-3s1, ill. Denmark. See Hawker "Danccock": An Anglo-Danish alliance. Hawker single-seater fighters for Denmark.

Dennis, H. D. Atlanta-Miami air mail successes.

Aviation, Vol. 21, No. 20 (Nov. 15, 1926), New York, pp. 839-s40, ill.

- Ninety days with Florida airways.

Aero Digest, Vol. 9, No. 2 (Aug., 1926), New York, pp. 95, 154.

De Pineuo. A flight of 33,000 miles.

Journ. Roy. Aer. Soc, Vol. 30, No. 189 (Sept. 1920), London, pp. 507-518.

- See Dollfus, Charles: Observations et opinions du commandant de Pinedo

sur son vo3'age et le développement futur de l'aéronautique.

De PiNEno, Francesco. Alcune considerazioni sulla mia crociera aerea di 55,000 chilometri.

Rivista Aeronautica, Anno 2, N. 7 (luglio 1926), Roma, pp. 1-17, ill.

- Un volo di 55,000 chilometri.

Milano, A. Mondadori, 1926, pp. 287, ill., maps.

Department op Commerce. See United States Department of Commerce. Depreciation. See Dichman, Ernest W.: Maintenance and depreciation of airplanes and engines.

Deschamps, Charlie. See Blanchet, Georges: Aviateurs contemporains. Charley Deschamps.

Design. Handbook of instructions for airplane designers.

Engineering Division Army Air Service, Fourth edition, in April 1925, p. 335, ill.

- Model designation of Naval airplanes. A full statement of the system

employed in designating naval airplane designs.

Aviation, Vol. 20, No. 20 (May 17, 1926), New York, pp. 757-758.

Design. See Howard, H. B.: Some problems in aeroplane structural design.

- See Pippard, A. J. Sutton: The experimental stress analysis of frameworks with special reference to the problems of airship design.

- See Sigrist, F. : Design from the manufacturing point of view.

Detroit. See Arctic flight: Progress of the Detroit arctic expedition. Detonation. See Callendar, H. L., R. O. King and C. J. Sims: Dopes and

detonation.

- See Pinking: The theory of "Pinking."

- See Thaden, Herbert V.: 210-ft. airship mooring tower at Detroit airport.

DeWoitine, M. E. The metal construction of airplanes—its advantages—its

present state—its future.

National Advisory Committee for Aeronautics, Technical Memorandums No. 349, Feb. 13, 1926, (mimeographed) Washington, February 1926, p. 27. Paper read before the Institution of Aeronautical Engineers, December 15,1926.

Dexter, Edwin G. Why don't we fly?

Scientific Monthly, Vol. 22 (Mar. 1926), Garrison, N. Y., pp. 262-263.

Literary Digest, Vol. 89 (May 22,1926), New York, p. 72.

U. S. Air Services, Vol. 11, No. 5 (May 1926), Washington, D. C, pp. 14-15.

Dichman, Ernest W. Maintenance and depreciation of airplanes and engines.

Mechanical Engineering, Vol. 48, No. 6 (June 1926), New York, pp. 574-578.

Dickson, H. Borgia of the air.

Sat. Even. Post, Vol. 198 (May 1, 1926), Philadelphia, p. 26, ill.

Dictionaries. See Bertucciolo, Americo: Petit Dictionnaire illustré de

l'Aéronautique Italien-Française et Française-Italien. Diehl, Walter Stuart. The effect of flight path inclination on airplane

velocity.

National Advisory Committee for Aeronautics, Report No. 238, June 28, 1926, Washington, Government Printing Office, 1926, pp. 11, tables, diagrs.

- A study of the effect of a diving start on airplane speed.

National Advisory Committee for Aeronautics, Report No. 228, Feb. 12, 1926, Washington, Government Printing Office, 1925, pp. 9, tables, diagrs.

- Tests on airplane fuselages, floats, and hulls.

National Advisory Committee for Aeronautics, Report No. 236, June 22, 1926, Washington, Government Printing Office, 1926, pp. 22, ill., diagrs.

- Three methods of calculating range and endurance of airplanes.

National Advisory Committee for Aeronautics, Report No. 234, May 27, 1926, Washington, Government Printing Office, 1926, pp. 18, tables, diagrs.

—■— See Chandler, C. de Forest, and W. S. Diehl: Balloon and airship gases.

- See Münk, Max Michael, and Walter S. Diehl: The air force on a model

of the Sperry messenger airplane without propeller.

Diemer, F. Z. Verfahren zur graphischen Untersuchung der Startverhältnisse eines Flugzeugs.

Zeitschr. Flugt. Motoriuftsch., 17. Jahrg., 15. Heft (14. Aug. 1926), München, pp. 325-326, ill

Diesel. Les moteurs Diesel à rendement élevé.

La Technique Moderne, T. 18, No. 10 (15 mai 1926), Paris, pp. 317-318, ill.

--See Monney, C.-R.: Les effets thermiques dans les parois des moteurs

Diesel.

—:— See N., D. S. : L'emploi des moteurs Diesel légers en aviation. Dietrichson, L. See Amnndsen, Roald: Il mio volo polare fino a 88° lat. Nord con relazioni di H. Riiser-Larsen, L. Dietrichson, F. Raam, J. Bjerknes.

Dînes, J. S. Upper air temperatures and thunderstorms.

Nature, Vol 117, No. 2954 (June 12, 1926), London, pp. 822-823. Dines, L. H. G. See Gurney, F. J., and L. H. G. Dines: Revolving pilot balloons.

Di Ñola, Angelo. L'aviation sanitaire.

Hie Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 109-135, ill.

- Igiene dell' aviazione.

Rivista Aeronáutica, Anno 2, N. 4 (aprile 1926), Roma, pp. 54-56.

Direction. Radio direction finding. The superintendent of radio, air mail service, reports results of experimental work.

Aviation, Vol. 20, No. 4 (Jan. 25, 1926), New York, pp. 109-110.

Dirigibles. See Airship, Rigid.

Disk. See Shoemaker, James M.: Resistance of a fifteen-centimeter disk.

Disk drag. See Knight, Montgomery: Wind tunnel standardization disk drag.

Doerplinger, W. F. Improvements in dope.

Aviation, Vol. 20, No. 15 (Apr. 12, 1926), New York, p. 552.

Dollpus, Charles. Impressions d'Angleterre.

L'Aéronautique, 8me année, No. SI (fév. 1926), Paris, pp. 73-74, ill.

--Les mâts d'amarrage.

L'Aéronautique, 8me année, No. 87 (août 1926), Paris, pp, 253-259, ill.

- Maurice Mallet.

L'Aéronautique, 8me année, No. 90 (nov. 1926), Paris, p. 365, port.

- Observations et opinions du commandant de Pinedo sur son voyage et le

dévelopement futur de l'aéronautique.

L'Aéronautique, 8me année, No. 86 (juil. 1926), Paris, pp. 229-230.

- Le récit de l'expédition polaire d'Amundsen. Renseignements et enseignements techniques.

L' Aéronautique, 8me année, No. 82 (mars 1920), Paris, pp. 109-113, ill.

- See Hirschauer, L., et Ch. Dollfus: L'année aéronautique 1925-1926.

Dopes. See Callendar, H. L., R. O. King and C. J. Sims: Dopes and detonation.

- See Doerflinger, W. F. : Improvements in dope.

Dorlodot, Albert de La protection météorologique des lignes aériennes.

Ille Congrès International de la Navigation Aérienne, t. 1, Paris, [1925], pp. 234-237.

Dornier. El nuevo hidroavión.

Ibérica, Año 13, Núm. 646 (2 oct. 1926), Barcelona, p. 200, ill.

Dornier, C. Recent developments in the construction and operation of all-metal airplanes.

National Advisory Committee for Aeronautics, Technical Memorandums No. 378, Sept. 15, 1926 (mimeographed), Washington, September 1926, pp. 23, ill.

From "Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt," May 1926.

Douglas. The Douglas air mail plane.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, p. 508C.

- Douglas type M-2 mail plane.

Aero Digest, Vol. 8, No. 5 (May 1926), New York, p. 266, ill.

- Planes of the Douglas Company described.

TJ. S. Air Services, Vol. 11, No. 5 (May 1926), Washington, D. C, pp. 28-32, ill.

- New Douglas 02-D airplanes air Air Corps generals.

TT. S. Air Services, Vol. 11, No. 9 (Sept. 1926), Washington, D. C, p. 27, ill.

- See Samuels, Frank E.: Growth of the Douglas Company.

- See Curtiss Falcon: Two American high-performance two-seaters.

Douglas, G. P., and L. P. Coombes. The measurement of torque grading

along an airscrew blade.

Aeronautical Research Committee, Reports and Memoranda, No. 992 (Ae. 203), June 1925-London, 1926, pp. 11, tabls., diagr.

DoffTT, G. H. Compression rubbers.

Aircraft Engineer, suppl. Flight, Vol. 18, No. 25 (June 24, 1926), London, pp. 362d-362f.

Drebertelli, E. C. Cavagnino A valvole 500 HP.

L'Aerotechnics, Supplemento de L'Ala d'ltalia, Anno 5, N. 11 (Nov. 1926), Milano, pp. . 485-486, ill.

Drotjhin, Georges. See Blanchet, Georges: Aviateurs contemporains. Maurice Drouhin.

Dryden, Hugh L., and R. H. Heald. Investigation of turbulence in wind tunnels by a study of the flow about cylinders.

National Advisory Committee for Aeronautics, Report No. 231, April 16,1926, Washington, Government Printing Office, 1926, pp. 17, ill., diagrs.

Dryden, Hugh L., and George C. Hill. Wind pressures on structures. Part I—General discussion of wind pressure data. Part II—Distribution of pressure over a model of a tall building.

Department of Commerce, Bureau of Standards, Scientific papers of the Bureau of Standards. No. 523, Part of Vol. 20, Washington, Government Printing Office, 1926, pp. 697-732, ill., diagrs tables.

Ducout, Marcel. Pourquoi nos avions brûlent-ils?

L'Aérophile, 34e année, Nos. 21-22 (ler-15 nov. 1926), Paris, pp. 323-325.

Düsseldorf. See Krupp, G.: Die WGL-Ausstellung in Düsseldorf 1926. Duhamel, Alphonse. See Blanchet, Alphonse: Aviateurs contemporains. Alphonse Duhamel.

Duke, Donald G. Airports and airways.

Aero Digest, Vol. 9, No.2 (Aug. 1926), New York, pp. 98-99,157-15S.

Dumanois, Paul. Au sujet de l'emploi dans les moteurs à explosion de carburants peu inflammables.

C. R. Acad. Sei., T. 183, No. 25 (20 déc. 1926), Paris, pp. 1261-1263.

-Les hautes compressions dans les moteurs à explosion.

La Nature, 54c année, No. 2727 (10 juil. 1926), Paris, p. 20.

- Sur l'importance du rendement de combustion dans les moteurs à explosion.

C. R. Acad. Sei., T. 183, No. 15 (11 oct. 1926), Paris, pp. 592-594.

- Sur la possibilité de réaliser des hautes compressions sans antidétonants.

C. R. Acad. Sei., T. 182, No. 23 (7 juin 1926), Paris, pp. 1378-1379, ill.

- Sur l'effet retardateur d'inflammation produit par les corps dits antidétonants.

C. R. Acad. Sei., T. 182, No. 25 (21 juin 1926), Paris, pp. 1526-1528.

- La surcompression dans les moteurs à explosion. Etat actuel de la question.

La Technique Moderne, T. 18, Nos. 9, 22 (1er mai, 15 nov. 1926), Paris, pp. 257-261, 673-679, Ü1.

Dunlap, O. E. Metal-clad airship.

Scient. Amer., Vol. 134 (May 1926), New York, pp. 352-354, ¡11.

Dunlop. Sur les avions modernes, les pneumatiques Duniop à tringles sur jantes à base creuse, sont indispensables.

L'Aérophile, 34e année, Nos. 9-10 (ler-15 mai 1926), Paris, p. 142. Dunne. The tailless aeroplane. Dunne type developed according to modern knowledge.

Flight, Vol. IS, No. 17 (Apr. 29,1926), London, pp. 261-263, ill.

Dural. See Roche, J. A. : Study of dural and steel for airplane structures. Duralumin. Duralumin construction on original lines.

Flight, Vol. 18, No. 10 (Mar. 11, 1926), London, pp. 139-141, ill.

- Repairing duralumin hulls and pontoons.

Aviation, Vol. 21, No. 6 (Aug. 9,1926), Now York, pp. 242-243, ill.

- See Aitchison, Leslie: Duralumin.

- See Gabrielli, G. : I trafilati in duralluminio nelle costruzioni aeronautiche

e l'aeroplano " Ansaldo-Caccia 2."

Duralumin. See Nelson, William.: Duralumin and its corrosiou.

- See Nelson, William.: The protection of duralumin from corrosion.

- See Short, Oswald: Duralumin as a material for aircraft construction.

- See Y-alloys: The age hardening of Y-alloys.

Durand, William Frederick, and E. P. Lesley. Comparison of tests on air propellers in flight with wind tunnel model tests on similar forms.

National Advisory Committee for Aeronautics, Report No. 220, March 31, 192G, Washington, Government Printing Office, 1926, pp. 29, ill., tables, diagrs.

Durand, William Frederick. Interaction between air propellers and airplane structures.

National Advisory Committee for Aeronautics, Report No. 235, Aug. 26, 1926, Washington, Government Printing Office, 1926, pp. 23, ill., tahles, diagrs.

- Tests on thirteen Navy type model propellers.

National Advisory Committee for Aeronautics, Report No. 237, Nov. 5, 1926, Washington, Government Printing Office, 1926, pp. 17, diagrs.

Durward, J. Measurement of vertical currents in the lowest layers of the atmosphere during sea-breezes.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 678-682, tabls., diagr.

Dutton, W. S. Family airplane will soon be here; interview with W. B. Stout.

American Magazine, Vol. 101 (June 1926), Springfield, Ohio, pp. 54-57, ill. Duvigneaud, A. Rochon. Enquête sur l'orientation du pigeon voyageur et son mécanisme.

La Nature, 54e année, No. 2727 (10 Juil. 1926), Paris, pp. 24-25.

Dyle et Bacalan. L'avion Dyle et Bacalan, D. B. 10, type Bn4.

L'Aérophile, 34e année, Nos, 21-22 (ler-15 nov. 1926). Paris, pp. 326-329, ill.

E

Eagle. The "Eagle" aerial camera. A new British electrically operated outfit Flight, Vol. 18, No. 45 (Nov. 11, 1926), London, pp. 737-738, ill.

- See Photography: The Eagle air camera.

Eaglerock. Constructing and merchandizing the Eaglerock.

Aviation, Vol. 21, No. 26 (Dec. 27, 1926), New York, pp. 1077-1079, ill.

Ear. See Accorinti, Vincenzo: Disturbi auricolari in aviazione.

Eaton, Herbert'Nelson, K. H. Beij, W. G. Brombacher, W. W. Frymoyer, H. B. Henrickson, C. L. Seward, and D. H. Strother. Aircraft instruments.

New York, Ronald Press Co., 1926, pp. xii, 269, ill. Eaton, Herbert Nelson. See Tuckerman, Louis Bryant: A fabric tension

meter for use on aircraft. Eck, Bruno. Beitrag zur Turbinentheorie.

Werft. Reederei. Hafen. 6 Jahr. 22 Aprile 1925, Heft 8. Eckersley, T. L. Electrical constitution of the upper atmosphere. Nature, Vol. 117, No. 2954 (Juno 12, 1926), London, p. 821.

Edlund, G. Flughäfen.

Tekn. Tidskrift, Bd. 56, 1926 Baukunst pp. 13-21. Education. See Fox, F. C. : Airplane; project for elementary schools. -- See Klemin, A.: Aviation and the University.

Edwards, Ivo Arthyr Exley, and F. Tymms. Commercial air transport; with a foreword by Air Vice-Marshal Sir Sefton Brancker.

London, New York, Sir I. Pitman & Sons, ltd., 1926, pp. xv, 163, ill.

Egypt-India. Egypt-India air line starts Jan. 1.

Aviation, Vol. 21, No. 23 (Dec. 6, 1926), New York, pp. 958-959, map.

Ehxermann, H. Silumin im Plugmotoren- und Flugzeugbau.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 19. Heft (14. Okt. 1926), München, pp. 410-411.

Eisenlohr, Roland. Der Metallflugzeugbau in Frankreich.

Zeitschr. Ver. deutscbr. Ing., Bd. 70, Nr. 33 (14. Aug. 1926), Berlin, pp. 1109-1110, ill.

- Der 6. Rhönsegelflug 1925.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 2. Heft (28. Jan. 192,6), München, pp. 28-34, ill.

- Uber den Rhönsegelflug-Wettbewerb 1926.'

Zeitschr. Ver. deutsch. Ing., Bd. 70, Nr. 43 (23. Okt. 1926), Berlin, pp. 1406-1408, ill.

- Was bezwecken wir mit dem Segelflug?

Luftfahrt, 30. Jahrg., Nr. 4 (20. Feb. 1926), Berlin, p. 50. Electricity, Atmospheric. See Idrac, P.: Sur des enregistrements du champ électrique jusqu'à 20000 m. d'altitude.

Elhart, E. W. Commençai aviation in Europe.

Nation, Vol. 122 (Feb. 24, 1926), New York, pp. 198-200.

Eliott-Lynn, Sophie C. Suggestions for popularising civil aviation.

llle Congrès International de la Navigation Aérienne, T. 3, Paris, [1925], pp. 198-206. Ellsworth. See Amundsen-Ellsworth: The Amundsen-Ellsworth polar expedition.

Ellsworth, Lincoln. See Amundsen, Roald Engelbregt Gravning: Den f0rste flukt over Polhavett . . .

Elworthy, R. T. Helium in Canada.

Canada, Department of Mines, Mines Branch, Ottawa, 1926, pp. iv, 64, ill., map. Engberding. Die Katastrophe der Shenandoah.

Luftweg, Jahrg. 1926, Heft 4-6 (25. Feb.-25 März 1926), Berlin-München, pp. 32-36, 46-49 59-61.

Engberding, E. Luftschiff unde Luftschiffahrt in Vergangenheit, Gegenwart und Zukunft; eine allgemein verständliche Einführung in das moderne Luftschiffwesen und seine grosse Probleme; Bau und Verwendung der Luftschiffe.

Berlin, V D i—Verlag, G. m. b. H., 1926, pp. xxiv, 272.

Engines. Airplane-engine manufacture.

Mechanical Engineering, Vol. 48, No. 6 (June 1926), New York, p. 578. Machinery, Vol. 27, No. 703 (Mar. 18, 1926), pp. 793-806, ill.

- Aménagement et équipement des groupes motopropulseurs. Etat actuel

des fabrications-matériels nouveaux.

L'Aérotechnique (L'Aéronautique, 8me année, No. 81), 4e année, No. 38 (fév. 1926), Paris, pp. 61-72, ill.

- American air-cooled engines.

The Aeroplane, Vol. 30, No. 15 (Apr. 14, 1926), London, p. 399.

•- American and British aero engine specifications.

Automotive Industries, Vol. 54, No. 7 (Feb. 18,1926), New York, p. 327.

- Le concours des moteurs de grande endurance.

L'Aéropbile, 34e année, Nos. 1-4 (ler-15 janv., ler-15 fév. 1926), Paris, pp. 10-12, 39-40, ill. L'Aéronautique, 8me année, No. 81 (fév. 1926), Paris, pp. 58-59.

- Cooling of air-cooled engines by forced circulation of air.

National Advisory Committee for Aeronautics, Technical Memorandums No. 3S5, Oct. 28, 1926 (mimeographed), Washington, October 1926, pp. 2, ill. From "Les AUes," September 9, 1926.

- Do airplane engines cost much?

Aviation, Vol. 21, No. 23 (Dec. 6,1926), New York, pp. 960, 962, ill.

- Endurance test of Bristol Jupiter aero engine.

Engineering, Vol. 121, No. 3143 (March 26, 1926), London, p. 394.

- Jet propulsion.

Scient. Amer., Vol. 134 (Apr. 1926), New York, p. 266, ill., diagr.

Engines. Mixing and ignition in supercharged engines.

National Advisory Committee for Aeronautics, Technical Memorandums No. 360, April 30,1926 (mimeographed), Washington, April 1926, pp. 26, ill. From "Der Motorwagon," December 10, 1926.

- Modern American engine development.

The Aeroplane, Vol. 30, No. 6 (Feb. 10,1926), London, pp. 154-156.

- Monographies de moteurs.

Hirschauer, L., et Ch. Dollfus: L'année aéronautique 1925-1926. Paris, Dunod, éditeur, 1926, pp. 60-61, ill.

- Un moteur à régime lent: le B. M. W.-VI.

L'Aéronautique, Sme année, No. 88 (sept. 1926), Paris, pp. 292-294, ill.

- Moteur d'aviation sans soupapes Panhard 450 cv. type V. K. 12 L.

L'Aérophile, 34o année, Nos. 3-4 (ler-15 fév. 1926), Paris, p. 51, ill.

- Les moteurs françaises.

L'Aéronautique, 8me année, No. 80 (janv. 1926), Paris, pp. 27-32, ill.

- Ein neuer DVL-Motorenprüfstand.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 8. Heft (28. April 1926), München, pp. 162-164. ill.

- Piston temperatures in high-speed petrol engines.

Engineering, Vol. 121, No. 3135 (Jan. 29, 1926), London, pp. 145-147.

- Steam power in aircraft?

Scient. Amer., Vol. 135 (Sept. 1926), New York, pp. 229-230, ill.

- See A. D. C. The 340 H. P. A. D. C.-Nimbus engine.

- See Bagnulo, A.: II nuovo motore Bagnulo.

- See Beardmore "Cyclone': The Beardmore "Cyclone" aero engine.

- See Berreur, A.: Un moteur à explosion de l'avenir.

- See Bevan, W. A. : New aircraft engines.

- See Black, Archibald: Removable cylinders simplify maintenance of air-cooled airplane engines.

- See Bock, S. : El motor Diesel en su funcionamiento terrestre y maritimo.

- See Brewer, Robert W. A.: The air-cooled radial engine.

- See Brewer, Robert W. A.: Some problems in the design of an air-cooled

radial engine.

- See Bristol Cherub: Over the Alps with a Bristol "Cherub" engine.

- See Büchner: The fundamental principles of high-speed semi-Diesel engines.

- See Caminez, Harold: The Fairchild Caminez engine.

- See Capetti, A.: Lo sviluppo dei motori con valvole a manicotto.

- See Cave-Brown-Cave, T. R.: The evaporative cooling of aero engines

and the condensation of exhaust gas for water recovery.

- See Cirrus Mark II: The "Cirrus. Mark II" engine.

- See Denham, A. F.: Cam is used instead of crank train in radial airplane

engine.

- See Denham, A. F.: Wright "J" type engine is result of extensive service

tests.

- See Dichman, Ernest W. : Maintenance and depreciation of airplanes and

engines.

- See Drebertelli, E. C: Cavagnino A valvola 500 HP.

- See Dumanois, Paul: Au sujet de l'emploi dans les moteurs à explosion

de carburants peu inflammables.

- See Dumanois, Paul : Les hautes compressions dans les moteurs à explosion.

Engines. See Dumanois, Paul: Sur la possibilité de réaliser de hautes compressions sans antidétonants.

- See Dumanois, Paul: Sur l'effet retardateur d'inflammation produit par

les corps dits antidétonants.

- See Dumanois, Paul : Sur l'importance du rendement de combustion dans

les moteurs à explosion.

- See Dumanois, Paul: La surcompression dans les moteurs à explosion.

Etat actuel de la question.

- See Fairchild Caminez: The Fairchild Caminez cam engine.

- See Fairchild-Caminez : The Fairchild-Caminez engine.

- See Fedden, A. H. R. : Installation problems on radial air-cooled engines.

-— See Fedden, A. H. R.: Radial air cooled aero engines.

- See Fiat "A-20": The Fiat "A^20" aero engine.

- See Gibson, A. H.: Piston temperatures and heat flow in high-speed

petrol engines.

- See Gillette, L. S.: Low weight and compactness feature Packard aero

engines.

- See Grard: Influence de la zone thermique de travail sur la sélection des

métaux pour moteurs d'aviation application aux soupapes d'échappement.

- See Guidoni, Alessandro: Turbomotore a compressore a nafta.

- See Herzmark: Le démarreur d'aviation Herzmark AV 2.

- See Hispano-Suiza: Le moteur Hispano-Suiza.

- See Hourwich, Iskander, and W. J. Foster: Air service engine handbook.

- See Jalbert, J.: Two-stroke-cycle engines for airplanes.

- See Joachim, William F.: Research on oil-injection engines for aircraft.

- See Kemper, Carlton: Improving the performance of a compression

ignition engine by directing flow of the inlet air.

- See Lacoin, M.: Cours de moteurs à combustion interne. Livre 1: Puissance fournie par le combustible.

- See Lawrance, Charles L. : Modem American aircraft engine.

- See Lawrance, Charles L.: Modem American aircraft engine development.

- See Lefranc, Jean-Abel: Moteurs d'avions à refroidissement par l'air ou

par l'eau.

- See Lehr, G.: Etudes de moteurs spéciaux aux Etats-Unis.

- See Lehr, G.: Les moteurs d'aviation aux Etats-Unis.

- See LePage, W. Laurance: The advent of the radial air-cooled engine.

- See Levi-Cases, A.: Motori ad olio pesante ed applicazioni aeronautiche.

- See Liberty engine: An air-cooled Liberty engine.

- See Lissenko, I.: Detonation tests of a Napier Lion V airplane engine

made.

- See Lorraine-Dietrich: Le moteur Lorraine-Diétrich 450 cv., 12 cylinders

en W.

- See Maimer, Ivar: Water- or Air-cooled aero-engines?

- See Martinot-Lagarde, C: L'aviation au début de 1926. Les groupes

motor-propulseurs.

--See Matteucci, Raffaelli: Functioning of reduction gears on airplane

engines.

Engines. See Meteormotor engine: The meteor-motor engine.

- See Monney, C.-R. : Les effets thermiques dans les parois des moteurs

Diesel.

- See N., D. S.: L'emploi des moteurs Diesel légers en aviation.

--See Noville, G. O.: Cold weather engine starting.

- See Paris: The Paris aero show 1926. Aero engines at the salon.

- See Paton, C. R., and Carlton Kemper: Power output and air requirements of a two-stroke cycle engine for aeronautical use.

- See Pierce, R. F. R. : Supercharged aero engines.

- See Pinking: The theory of "Pinking."

- See Power plants: Aircraft power plants. Part I—Aircraft engines, by

Edward T. Jones, and Robert Insley. Part II—Propellers, by Frank W. Caldwell. Part III—Water ballast recovery, by Robert F. Kohr.

- See Pratt and Whitney engine: Pratt and Whitney engine performs

admirably from coast to coast and back again.

- See Pratt and Whitney engine: The Pratt and Whitney Wasp engine.

- See Prentice, James: Increase in the efficiency of aircraft engines.

- See Pumps: Pompes auto-régulatrices A. M., et alimentation des moteurs

à explosion par le système A. M.

- See Pye, D. R.: The high-duty compression-ignition engine.

- See Raffaelli, Italo: Accoppiamento di più motori.

- See Raffaelli, Italo: Temperatura dell' acqua di circolazione nei motori

d' aviazione in alte quote.

- See Renault: Etude sur le moteur Renault 450 CV., prise directe. Caractéristiques et comparaison avec le 550 CV.

- See Renault: Le moteur Renault à Téhéran.

- See Renault: Les succès des usines Renault dans le concours de grande

endurance des moteurs d'aviation.

- See Rhone: The super Rhone engine.

- See Richter, Ludwig: On the knocking of gasoline engines.

- See Saffy, J. F.: Influence d'un séjour prolongé au rouge sur la resilience

de quelques métaux pour soupapes d'échappement.

- See Siddeley Jaguars: The Siddeley "Jaguar's" 17,000 miles. A triumph

for the air-cooled engine.

—— See Sims, C. J., and E. W. J. Mardles: The effect of metallic sols in delaying detonation in internal combustion engines.

- See Sparrow, Stanford W.: Fuels for high-compression engines.

- See Taylor, C. Fayette: History of the aeronautical engine.

- See Three-engines: On the three-engined policy.

- See Tilsher, G. A.: Machining valve seats in an aeronautical engine.

- See Veranneman, A.: L'évolution des moteurs huile lourde et leurs

applications.

- See Ware, Marsden: Description and laboratory tests of a Roots type

aircraft engine supercharger.

- See Weil, A.: Die Motoren vom Deutschen Seeflug-Wettbewerb 1926.

- See Wilson, E. E.: Air-cooled and water-cooled engines.

Engines. See Wilson, E. E.: Navy air-cooled engine development. --See Wilson, E. E.: The trend of aircraft engine development.

- See Wright engines: Wright Whirlwind engines.

--See Wright-Morehouse: Wright-Morehouse light engine.

England. See Dollfus, Charles: Impressions d'Angleterre.

- See Morley-Jenkins, F.: First aerial voyage in England.

- See Wernekke: Vom englischen Flugverkehr.

England-Australia. England-Australia and back by air.

Aviation, Vol. 21, No. 16 (Oct. 18, 1926), New York, pp. 674, 676, ill., map.

Englesson, Elov. The Kaplan and propeller turbines and the cavitation problem.

Engineering, Vol. 121, No. 3146 (April 16, 1926), London, pp. 484-480, ill.

Entwistle, F. Meteorology in relation to the selection of aerodromes sites.

Hie Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 2-23, maps, diagrs.

Eredia, F. I fenomeni aerologici nella navigazione aerea.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 179-207, ill.

Ernst. Coppa d'Italia 1926.

Luitweg, Jahrg. 1926, Heft 21 (10. Nov. 1926), Berlin-München, pp. 216-218, ill.

Ernst, D. X. Pariser Aero-Salon.

Luftweg, Jahrg. 1926, Heft 24 (25. Dez. 1926), Berlin-München, pp. 245-247.

Escande, Leo, et Marcel Ricaud. Rapport sur les "Lois de la similitude dynamique."

Ille Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 206-226. Esperanto. See L'Isle, Rollet de: Nomination d'une commission internationale pour l'emploi de 1' "Esperanto" dans la navigation aérienne.

Estimates. The air estimates, 1926-27. A net increase, of £486,990. Flight, Vol. 18, No. 8 (Feb. 25, 1926), London, pp. 112-115. Great Britain.

--On the air estimates.

The Aeroplane, Vol. 30, Nos. 8-10 (Feh. 24-Mar. 10, 1926), London, pp. 189-196, 217-226, 246-254.

Eula, Antonio. L'applicazione dell'effetto Magnus.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 298-325, ill.

- Le ricerche sperimentali in aerodinamica.

L'Aerotenica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Voi. 6, Nos.0. 7 (ottobre 1926), Pisa, pp. 374-407, 445-481, ili.

Europe. Commercial aviation in North Central Europe.

Aero Field, Vol. 1, No. 2 (May 1926), London, pp. 50-51, 54, map.

- See Black, Archibald: European air transport.

- See Elhart, E. W.: Commercial aviation in Europe.

Evans, Elliott A. Some chemical properties of lubricants.

Ille Congrès Internationale de la Navigation Aérienne, T. 3, Paris, [1925], PP. 154-luü, ill.,

Everling, E. Comparative quantities in aircraft statistics.

Aircraft Engineer, suppl.to Flight, Vol. 18, No. 47 (Nov. 25, 1926) London, pp. 764a- 764e, diagr.

Expositions. Esposizione aerotecnica.

Rivista Aeronautica, Anno 2, N. 1 (gen. 1926), Roma, pp. 120-123.

Eyb, Robert. Fliegerhandbuch.

Berlin, Richard Carl Schmidt et Co., 1926, pp. 405, ill. Bibliothek für Luftschiffahrt und Flugtechnik, Band 13.

F /

F. B. A. L'hydravion F. B. A. amphibie.

L'Aérophile, 34e année, Nos. 3-4 (ler-15 fév. 1926), Paris, pp 41-42, 111.

Fage, A. An analysis of the pressure distribution on a model airscrew by means of the vortex theory.

Aerouautios, Tech. Kept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 375-380, tabls., diagr.

Fage, A., and W. L. Cowley. Experiments to measure the variation, with speed and size, of the forces of an aerofoil of thick section. (German aerofoil, No. 420.)

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 108-120, 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.

Aeronautical Research Committee, Reports and Memoranda, No. 951 (Ae. 170), Mar., 1925, London, 1926, pp. 28, ill., tabls., diagrs.

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

Aeronautical Research Committee, Reports and Memoranda, No. 1015 (Ae. 218), Nov., 1925, London, 1926, pp. 14, tabls., diagr.

Fairchild. The Fairchild FC-1 monoplane.

Aviation, Vol. 21, No. 17 (Oct. 25, 1926), New York, pp. 707-709, ill.

- See McLaughlin, George F.: The Fairchild monoplane.

Fairchild Caminez. The1 Fairchild Caminez cam engine.

The Aeroplane, Vol. 30, No. 23 (June 9. 1926), London, pp. 574, diagr.

- The Fairchild-Caminez engine.

Aviation, Vol. 20, No. 21 (May 24,1926), New York, pp. 788-791. ill.

- Le moteur Fairchild Caminez.

L'Aéronautique, 8me année, No. 87 (août 1926), Paris, p. 260, ill.

Fairey. The Fairey type HID land or seaplane.

The Aeroplane, Vol. 31, No. 23 (Dec. 8,1926), London, p. 698. ill.

Fairey-Reed. The Fairey-Reed airscrew.

The Aeroplane, Vol. 31, No. 24 (Dec. 15, 1926), London, p. 780, dl.

Far East. Linking near east with far east.

Aero Field, Vol. 1, No. 6 (Sept. 1926), London, pp. 122-123,126, map.

Farman. L'avion commercial Farman F.170 à moteur Farman 500 cv. L'Aérophile, 34e année, Nos. 19-20 (ler-15 oct. 1926), Paris, pp. 307-308, ill.

- L'avion Farman F140 Bn 4, super-goliath.

L'Aérophile, 34e année, Nos. 5-6 (ler-15 mars 1926), Paris, pp. 69-72. ill.

- The Farman commercial airplane "Jabiru."

National Advisory Committee lor Aeronautics, Aircraft Circulars, No. 15 (mimeographed), Washington, September 1926, pp. 6, ill.

- Farman monoplane F.170. Commercial airplane with one 500 HP.

Farman engine.

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 12 (mimeographed), Washington, March 1926, pp. 5, ill. From "Les Ailes," April 8, 1926.

1'AitmUHARSON, Frederick Burt. The wind balance in the Boeing aerodynamical laboratory at the University of Washington. Seattle, Wash., 1926, pp. 21, ill., diagrs.

Farren, W. S. The variation of the performance of an aeroplane with wing loading.

Aeronautical Research Committee, Reports and Memoranda, No. 994 (Ae. 205), Dec, 1925, London, 1926, pp. 22, diagr.

Fauhe-Favier, Louise. La ligne Paris-Berlin, Berlin-Paris.

L'Aérophile, 31e année, Nos. 11-12 (ler-15 juin 1926), Paris, pp. 173-175, ill.

Faurb-Favibr, Louise. Le quatrième rallye aérien.

L'Aéropbile, 34e année, Nos. 13-14 (ler-15 jnil. 1926), Paris, pp. 203-204, ili.

Feduen, A. H. R. Installation problems on radial air-cooled engines.

Journ. Roy. Aer. Soe., Vol. 30, No. 182 (Feb. 1926), London, pp. 83-128, ill., diagr.

- Radial air cooled aero engines.

Ille Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 414-442, ill.

Fédération Aéronautique Internationale. Betrachtungen zur Tagung der Fédération Aéronautique Internationale in Prag.

Luftweg, Jahrg. 1926, Heft 5 (10. März 1926), Berlin-München, p. 50.

- XXe Conférence de la Fédération Aéronautique Internationale.

L'Aéropbile, 34e année, Nos. 21-22 (ler-15 nov. 1926), Paris, pp. 337-339, ill.

- Les records et la Fédération Aéronautique Internationale.

L'Aéronautique, 8me année, No. 81 (fév. 1926), Paris, pp. 49-50.

- «See Böhm, Alois Robert: Bericht über die XX. Konferenz der Fédération

aéronautique internationale in Rom.

Felix. The "Felix" model monoplane.

Flight, Vol. 18, No. 20 (May 20, 1920), London, p. 300, diagr.

Fellowships. «See Busk: The Busk studentship in aeronautics.

- See Wakefield, Charles: Scholarships for flight cadets.

Fenning, R. W. Gaseous combustion at medium pressures. Part I. Carbon monoxide-air explosions in a closed vessel. Part II. Methane-air explosions in a closed vessel.

Aeronautical Research Committee, Reports and Memoranda, No. 998 (E. 16), May, 1925, London, 1926, pp. 25, tabls., diagr.

- Note on "detonation" temperatures in closed vessel explosions.

Aeronautical Research Committee, Reports and Memoranda, No. 1005 (E. 17), Mar. J926, London, 1926, pp. 5, tab!.

Ferguson, George. Soaring flight and power, being my discovery of the principle of soaring flight on motionless wings, and how it can be applied to the development of mechanical power from the force of the motions of the earth. Los Angeles, Calif., 1924, pp. 49, ill., diagrs.

Ferrari, Carlo. Sollecitazioni nella struttura di un aeromobile per una improvvisa variazione di carico.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Voi. 6, N. t (agosto-set. 1926), Pisa, pp. 335-351, ill.

Ferry, Georges. Les deux temps du mal des aviateurs. Le cœur de l'aviateur.

Ille Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 147-153.

- A propos d'une cause d'accident au cours d'un vol en avion. Moyens

de l'éviter (Observations personnelles).

Ille Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 154-159.

Fiat. The S82 HP.P. Fiat aero engine.

Flight, Vol. 18, No. 47 (Nov. 25, 1926), London, p. 767, ill.

- The Fiat "A-20" aero engine.

Flight, Vol. 18, No. 18 (May 6, 1926), London, p. 275, ill.

Field, Francis J., Ltd. A commercial & historical atlas of the world's airways, foreword by Sir W. Sefton Brancker.

Birmingham, Eng., F. J. Field, ltd., 1925, pp. 85, ill. Fire protection. See Lamé, M.: La protection contre l'incendie abord des avions.

Fischer von Portuzyn, and Josef M. Jurinek. Jahrbuch für Luftverkehr 1925. München, Verlag Richard Pflaum.

Fischer von Porturzyn, Frieurich Andreas. Luftbarrikaden, die Befreiungspolitik der deutschen Luftahrt.

Hannover, A. Sponholtz, 1926, pp. 94.

Fischetti, Ugo. Considerazione sulla güera aerrea.

Rivista Aeronautica, Anno 2, N. 3 (marzo 1926), Roma, pp. 6-15.

- Le operazioni autonome aeree ed il dominio dell' aria.

Rivista Aeronautica, Anno 2, N. 6 (giugno 1926), Roma, pp. 45-52.

FrTZMAurice, James C. The Irish air force.

Aero Digest, Voi. 9, No. 3 (Sept. 1926), New York, p. 190, ili.

Flack, Martin. Stable nervous control in relation to flying efficiency.

lile Congrès International de la Navigation Aérienne, T. 1, Paris, [19251, pp. 85-104, ill.

Flettner. El buque "Bárbara" con rotores Flettner, en Barcelona. Ibérica, Año 13, Núm. 643 (11 sept. 1926), Barcelona, pp. 145-147. ill.

- See Bárbara: El buque "Bárbara" con rotores Flettner, en Barcelona.

Fleury, R. de. L'alpax (silumin) dans la construction aéronautique.

lile Congrès International de la Navigation Aérienne, T. 3, Paris, [1925], pp. 39-54.

FtiGHT-path-angle. See Coleman, Donald G. : N. A. C. A. flight-path-angle and air-speed recorder.

Flight tests. See Koppe, Heinrich: Flight tests on airplanes.

Floats. See Richardson, Holden Chester: Naval development of floats for aircraft.

Florida. See Dennis, H. D.: Ninety days with Florida airways.

- See Riddle, Karl: Aerial surveys lend confideuce on hastily organized job.

Flow. See Prandtl, Ludwig, and 0. Tietjens: Kinetographic flow pictures.

- See Prandtl, Ludwig: Tasks of air flow research.

Fluids. See Terada, Torahiko, and Kunio Hattorf: Some experiments on motion of fluids. Part I, II, and III.

Flying. The future of flying. Discussed at the Royal Aero Club House Dinner. Flight, Vol. 18, No. 16 (Apr. 22, 1926), London, pp. 242-244.

- On the future of flying.

The Aeroplane, Vol. 30, No. 16 (Apr. 21, 1926), London, pp. 417-422. ill.

- The woes of the private flyer.

The Aeroplane, Vol. 30, No. 8 (Feb. 24, 1926), London, pp. 208-212.

Flying boat. See Mitchell, R. J.: Notes on the ground operation of flying boats. Fog. See Borriello, Luisa: La nebulosità nell'Europa.

- See Camiciotti, Dante: La frequenza della nebbia in Italia.

- See Cooch, H.: Landing aircraft in fog.

Fokker. The Fokker commercial airplanes.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926) New York, pp. 512-514, ill.

■- History of Fokker airplanes.

Aero Digest, Vol. 9, No. 5 (Nov. 1926), New York, pp. 378-379, 390, ill.

Fokker, Anthony Herman Gerard. Anthony Herman Gerard Fokker. Airplane designer, inventor, manufacturer.

Aero Digest, Vol. 9, No. 5 (Nov. 1926), New York, pp. 377, 391, ill.

Fonck. New York-Paris. Ce que compte faire le capitaine Fonck. L'Aérophile, 34e année, Nos. 7-8 (ler-15 avril 1926), Paris, p. 107.

■- See Atlantic flight: The tragedy of an Atlantic flight: Disaster at the

start.

- See Jacques, P.: L'avion transatlantique du capitaine Fonck.

Fonck, René. My New York-Paris flight.

Aero Digest, Vol. 8, No. 6 (June 1926), New York, p. 330, ill.

- René Fonck's transatlantic airplane.

TJ. S. Air Services, Vo. 11, No. 9 (Sept. 1926), Washington, D. C. pp. 26-27, ¡11.

Ford. The Ford Airplane reliability tour.

Aviation, Vol. 21, No. 2 (July 12,1926), New York, p. 52.

- See Allen, C. B.: The Ford air tour.

- See Mail : Ford air transport.

- See Mail: Ford contract air mail opens.

Forestry. See Marner, N. B. : Airplanes are saving our forests.

- See Irrawaddy: Aerial survey of the tidal forests of the Irrawaddy.

Foschini, Francesco. Logistica area.

Rivista Aeronautica, Anno 2, N. 10 (Ott. 1926), Roma, pp. 3-13.

Foster, P. Field. See Pippard, A. J. Sutton, and P. Field Foster: The distortion of a still-jointed plane polygonal frame under loads applied in its plane.

Foster, William J. See Hourwich, Iskander, and W. J. Foster: Air service engine handbook.

Fournies. Lois générales de la resistance de l'eau à la translation des carènes de formes usuelles.

Paris, Gauthier-Villars.

Fox, F. C. Airplane; project for elementary schools.

U. S. Bureau Education Bull. S, 1926, Washington, D. C, pp. 45-59, ill., diagr. maps.

Fraichet. Erreurs de mesures et tolérances accordées aux calibres vérificateurs de cones et de filetage.

Service Technique de l'Aéronautique, Bulletin Technique, No. 36. Oct. 1926, France, pp. 32, ill.

France. Aeronautica militare. Francia. L'aviazione al Marocco. Rivista Aeronautica, Anno 2, N. 1 (gen. 1926), Roma, pp. 80-82.

- Aeronautica militare. Francia. Aviazione ed altri rapidi mezzi di

trasporto nelle operazioni coloniali.

Rivista Aeronautica, Anno 2, No. 1 (gen. 1926), Roma, pp. 82-87.

- Aeronautica militare. Francia. Note retrospettive sull' aviazione d'artiglieria.

Rivista Aeronautica, Anno 2, N. 1 (gen. 1926), Roma, pp. 87-90.

- Les avions français au Xe Salon de l'Aéronautique.

L'Aérophile, 34e année, Nos. 23-24 (ler-15 déc. 1926), Paris, pp. 353-359, ill.

- Le concours français d'hydravions de transport.

L'Aéronatique, 8me année, No. 89 (oct. 1926), Paris, pp. 345-347, ill.

-■ La France et les records d'aviation.

L'Aéronautique, 8me année, No. 80 (janv. 1926), Paris, pp. 1-26, ill.

- France leads the world in development of commercial air transportation.

Aviation, Vol. 20, No. 2 (Jan. 11, 1926), New York, p. 57.

- French civil aviation. A review of French air transportation with statistics for past three years of operation.

Aviation, Vol. 21, No. 4 (July 26,1926), New York, pp. 127-128, ill.

- The French economic aeroplane competition.

The Aeroplane, Vol. 31, No. 7 (Aug. 18, 1926), London, p. 220.

- The French light plane competition International meeting to be held

August 9 to 15.

Flight, Vol. 18, No. 16 (Apr. 22, 1926), Loudon, p. 217-248

- The tenth French aero show.

The Aeroplane, Vol. 31, No. 23 (Dec. 8,1926), London, pp. 701-744, ill.

--The tenth French aero show. II. The engine exhibits.

The Aeroplane, Vol. 31, No. 24 (Dec. 15, 1926), London, pp. 782-315, ill.

- See C, H.: La nouvelle campagne du comité français de propagande

aéronautique.

France. See Eisenlohr, Roland: Der Metallflugzeugbau in Frankreich.

--See Montjou, Guy de: Rapport fait (au cours de la précédente législature) au nom de la Commission de la marine militaire chargée d'examiner le projet de loi sur le statut naval (organization de l'aéronautique maritime).

■- See Sayers, W. H.: The trend of aircraft design in France.

- See Wernekke: Der französische Flugverkehr.

Franck. La navigation par temps de brume et l'aide que peut apporter la radiogoniométrie.

Ille Congrès International de la Navigation Aérienne, t. 1, Paris, pp. 213-224, ill.

Frank, P. Equipement électrique et T. S. F. à bord des avions.

L'Aéronautique, 8me année, No. 84 (mai 1926), Paris, pp. 157-163, ill.

Franco. La traversée de l'Atlantique sud en quatre étapes.

L'Aéronautique, 8me annéo, No. 81 (fév. 1926), Paris, p. 57, ill., port.

-- See Transatlantic flight: The Spanish Transatlantic flight.

Fraser, Chelsea Curtis. Heroes of the air.

New York, Thomas Y. Crowell Company, 1926, pp. xv, 427, ill., maps.

Frazer, R. A., and A. S. Batson. Experiments on a model of a Bristol Fighter aeroplane. (l/10th scale). Part II. Lateral derivatives by the forced oscillation method.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 287-315, ill., tabls., diagr.

Frazer, R. A. An investigation on wing flutter.

Aeronautical Research Committee, Reports and Memoranda, No. 1042 (A. 4), Feb., 1926, London, 1926, pp. 22, diagr.

Fresne, F. Gasnier du. Comment remédier au malaise de l'aviation de tourisme.

L'Aérophile, 34e année, Nos. 3-4 (ler-15 fév. 1920), Paris, p. 49.

Fret, Kurt. Experiments with rotating cylinders in combination with airfoils.

National Advisory Committee for Aeronautics, Technical Memorandums No. 382, Oct. 8, 1926 (mimeographed), W7ashington, October 1926, pp. 9, ill. From "Zeitschrift für Flugtechnik und Motorluftschiflahrt" August 28, 1926.

•—— Versuche mit rotierenden Zylindern in Verbindung mit Tragflächen.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 16 Heft (28 Aug. 1926), München, pp. 342-340, ill.

Friedensburg, Walter. Wettrennen oder Leistungsprüfung.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 20. Heft (28. Okt. 1926), München, pp. 448449.

Frost, H. H., and G. Marvin. Pacific airways; a menace or an asset in relations between the United States and the Orient?

Asia, Vol. 26 (Sept. 1920), New York, pp. 746-752, ill., map.

1'rtmoter, W. W. See Eaton, Herbert Nelson, K. H. Beig, W. G. Brombacher, W. W. Frymoyer, H. B. Henrickson, C. L. Seward, and D. H. Strother: Aircraft instruments.

Fuel. On fuels for aircraft engines.

Aviation, Vol. 20, No. 17 (Apr. 26, 1926), New York, p. 629.

- The supply of aero-engine fuels.

Engineering, Vol. 122, No. 3170 (Oct. 15, 1926), London, p. 4S5.

- See Callendar, H. L., R. O. King, and C. J. Sims: Dopes and detonation.

•- See Gardiner, Arthur W. : A preliminary study of fuel injection and compression ignition as applied to an aircraft engine cylinder.

- See Joachim, W. F.: An investigation of the characteristics of steel diaphragms for automatic fuel-injection valves.

- See Neumann, Kurt: Experiments on self-ignition uf liquid fuels.

Fuel. See Santer, J.: Determining size of drops in fuel mixture of internal combustion engines.

——- ' See Sempill, Colonel the Master of: Aero engine fuels of to-day and tomorrow.

- See Sparrow, Stanford W.: Fuels for high-compression engines.

Fùrst, Artur. Das flugzeng.

Berlin, Ullstein, 1925, pp. 139, ill., diagrs.

Fuselages. See Diehl, Walter Stuart: Tests on airplane fuselages, floats, and hulls.

G

G., R. La Regina Margherita e i primordi della nostra aeronautica. Rivista Aeronautica, Anno 2, N. 1 (gen. 1926), Roma, pp. 3-15, ill.

Gabrielli, G. Il canale del vento dell' Istituto di Aerodinamica del Politecnico di Aachen.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Voi. 6, X. 7 (nov. 1926), Pisa, pp. 483-496, ill.

—■— I trafilati in duralluminio nelle costruzioni aeronautiche e l'aeroplano "Ansaldo-Caccia 2".

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 341-353, ill.

Gallotti, Antonio. Alcuni aspetti della guerra dell' avvenire.

Rivista Aeronautica, Anno 2, N. 8 (agosto 1926), Roma, pp. 30-44.

Garber, Paul Edward. The 1926 National air races.

U. S. Air Services, Voi. 11, No. 10 (Oct. 1926), Washington, D. □., pp. 13-20, ill.

——- 6,000 miles from Spain to Argentina by air.

U. S. Air Services, Vol. 11, No. 3 (Mar. 1926), Washington, D. C, pp. 13-15, ill., map.

- Transatlantic attempt fails.

U. S. Air Services, Vol. 11, No. 11 (Nov. 1926), Washington, D. C, pp. 42-43, ill.

Gardiner, Arthur W. A preliminary study of fuel injection and compression ignition as applied to an aircraft engine cylinder.

National Advisory Committee for Aeronautics, Report No. 243, Nov. 29, 1926, Washington, Government Printing Office 1926, pp. 14, ill., tahles, diagrs.

Gardner, H. A. Durability of airplane doping and varnishing systems.

Paint Manufacturers Association of United States, Science section, Circular No. 274, June, 1926, Philadelphia, pp. 61-70, ill.

Gardner, Lester D. English impressions.

Aviation, Vol. 20, No. 18 (May 3, 1926), New York, pp. 660-661, ill.

- A flying tour of Europe.

Aviation, Vol. 21, Nos. 11-15 (Sept. 13-Oct. 11, 1926), New York, pp. 450-452, 494-498, 532-542, 582-585, 622-625, ill., maps.

Garin. L'elicottero "Garin".

Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, p. 447.

Garner, H. M., and S. B. Gates. The full scale determination of the lateral resistance derivatives of a Bristol fighter aeroplane.

Aeronautical Research Committee, Reports and Memoranda, No. 987 (Ae. 199), Aug., 1925, London', 1926, pp. 15, diagr.

Garner, H. M., and E. T. Jones. Full scale tests of different ailerons on Bristol Fighter aeroplane.

Aeronautica, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp, 187-193, tahl., diagr.

Garner, H. M., and W. G. Jennings. The variation of engine power with height.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 466-468, diagr.

Garner, H. M. See Gates, S. B., and H. M. Garner: A theory of the full scale

determination of damping in roll. Garros, Roland. See Saulnier, R.: Roland Garros et le tir à travers l'hélice.

Garsatjx. Les appareils à oxygène liquide.

IHe Congrès International de la Navigation Aérienne, T. l, Paris, [1925], pp. 142-146, ill.

--L'approvisionnement des avions en oxygène.

C. R. Acad. Sei., T. 182, No. 25 (21 juin 1926), Paris, pp. 1525-1526.

Garsatjx, Malassez et Toussaint. Sur le vertige de rotation.

C. R. Acad. Sei., T. 182, No. 3 (18 janv. 1926), Paris, pp. 236-238. Garufpa, E. La superaviazione. Le grandi velocità di tiaslazione cogi aeroplani.

L'Ala d'Italia, Anno 5, N. 12 (Die. 1926), Milano, pp. 523-526.

Gases. Empleo del combustible gaseoso en los derigibles.

Iberiea, Afio 13, No. 649 (23 oct. 1926), Barcelona, pp. 246-248.

—— See Atmosphere: The rare gases of the atmosphere.

- See Chandler, Charles de Forest, and W. S. Diehl : Balloon and airship gases.

- See Fenning, R. W.: Gaseous combustion at medium pressures. Part I.

Carbon monoxide-air explosions in a closed vessel. Part II. Methane-air explosions in a closed vessel.

Gasoline tanks. See Jacobs, Eastman N.: Effect of protruding gasoline tanks upon the characteristics of an airfoil.

Gas-starter. The gas-starter system for aircraft engines.

Mechanical Engineering, Vol. 48, No. 12 (Dec. 1926), New York, p. 1460.

Gates, S. B. See Garner, H. M., and S. B. Gates: The full scale determination of the lateral resistance of derivatives of a Bristol Fighter aeroplane.

Gates, S. B., and H. M. Garner. A theory of the full scale determination of damping in roll.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926 pp. 202-215, diagr.

Gears. See Bradley, W. F.: French airplane speed reducing gear to be used here.

- See Morris, J.: Airscrew vibration and gear stripping.

Generators. See Sayers, W. Brooks: Brooks Savers electric generator for aircraft.

Geographical Society, Leningrad. See Tigiken Laud: Airplane expedition to unknown land.

Georgii, Walter. Ergebnisse des Rhön-Segelflugwettbewerbes 1926.

Zeitscbr. Flugt. Motorluftscb., 17. Jahrg., 23. Heft (14 Dez. 1926), München, pp. 503-508, ill.

Georgii, Walter, und Heinrich Seilkopp. Ergebnisse einer flugwissenschaftlichen Forschungsreise nach Columbia (S. A.). Aus dem Archiv der Deutschen Seewarte.

Hamburg, 1926, pp. 50, ill.

Georgii, Walter. Flugwissenschaftliche Forschungsreise nach Kolumbia (S. A.).

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 2. Heft (28. Jan. 1926), München, pp. 25-28, ill.

Germant. Aeronautica militare. Germania. Aviazione, tanks e gas. Rivista Aeronautica, Anno 2, N. 1 (gen. 1926), Roma, pp. 90-93,

- Entwurf eines Gesetzes zur Durchführung der Artikeln 177, 178 and 198

des Vertrags von Versailles vom 1926.

Berliu, 1926, pp. 3. Nr. 2332. Reichstag III. Wahlperiode 1924-26. Presented by Der Reichsverkehrsminister.

——- German air transport reorganized.

Aviation, Vol. 20, No. 17 (Apr. 26, 1926), New York, pp. 035-630.

Germant. German civil aviation.

Aero Field, Vol. 1, No. 9 (Deo. 1926), London, p. 197, map. The Aeroplane, Vol. 30, No. 25 (June 23, 1926), London, p. 622.

- The German seaplane competition.

The Aeroplane, Vol. 31, No. 3, 6 (July 21, Aug. 11, 1926), London, pp. 104,182-185, ill. Flight, Vol. 18, No. 29 (July 22, 1926), London, pp. 448-452, ill.

- The German seaplane competition described.

The Aeroplane, Vol. 31, No. 7 (Aug. 18, 1926), London, pp. 221-222. -—— The German seaplane competition^ Heinkel H. E. 5 with Napier "Lion' gains first prize.

Flight, Vol. is, No. 31 (Aug. 5, 1926), London, p. 479, ill.

- The German seaplane competition. Preliminary technical results.

Flight, Vol. 18, No. 30 (July 29, 1920), London, p. 465.

- Germany's freedom in the air.

The Aeroplane, Vol. 31, No. 11 (Sept. 15, 1926), London, p. 362.

--The new German air transport combine. An amalgamation, in the

interests of economy, of two of the largest air transport systems in Europe. Aviation, Vol. 20, No. 7 (Feb. 15, 1926), New York, pp. 221-222, map.

- Reichsluftkursbuch . . . Ausg. Nr. 1. Anfang juni 1925.

Berlin, 1925.

Herausgegeben vom Keicbsverkebrsministerium (Abteilung für Luft und Kraftfahrwesen), June-October, 1925; Luftfahrtabteilung April 1926.

- See Bouché, Henri: L'industrie aéronautique allemande.

- See Jacques, P. : L'Allemagne organise son aviation militaire.

- See Niessel, A.: L'aviation allemande.

- See Spanner, E. F.: The broken trident.

Giacomelli, R. La forma di migliore penetrazione secondo Leonardo da Vinci.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 437-445, ill.

Giannini, Amedeo. Convenzione di Parigi per il regolamento della navigazione aerea, a cura di Amedeo Giannini.

Roma, u. S. i. L. A., Società Anonima editrice, 1925, pp. 73, diagrs. Biblioteca di diritto aeronautico, I.

- La legislazione areonantica italiana. Vol. II a cura di Amedeo Giannini.

Koma, anon. Komana edit, (R. Garroni), 1926, pp. 254.

Biblioteca di diritto aeronautico, n. 4. Cfr. Bollettino 1925, no. 2186.

Gibson, A. H. Piston temperatures and heat flow in high-speed petrol engines.

Engineering, Vol. 121, Nos. 3135-3136 (Jan. 29, Feb. 5, 1926), London, pp. 150-152, 183-185, ill., tables.

Gigli, Alberto. U dirigible rigido.

Rivista Aeronautica, Anno 2, N. 8 (agosto 1920), Roma, pp. 140-147, ill.

- La moderna Aeronave Italiana tipo N (1).

L'Aerotecnica, Giornale ed Atti dell' "Associazione Italiana di Aerotecnica", Voi. 0, n. (luglio 1926), Pisa, pp. 233-284, ill.

Gillette, L. S. Low weight and compactness feature Packard aero engines. Automotive Industries, Vol. 54, No. 15 (April 15,1926), New York, pp. 639-644, ill.

--Planes on Ford tour reflect new trends in design.

Automotive Industries, Vol. 55, No. 10 (Sept. 2, 1926), New York, pp. 372-375, ill.

Gillis, Ch. Graduations et inscriptions sur certains appareils de bord.

Hie Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 103-106, ill.

- Une réglette pour la détermination du cap au compas.

Ille Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 101-102.

Ginestous, G. Etude climatologique du golfe de Tunis en vue de l'aéronautique et de l'aviation.

Tunis, Queuard, éditeur.

Giovjne, Vittokio. Sulla costruzione di una carta aeronautica. Rivista Aeronautica, Auno 2, N. 1 (gen. 1926), Roma, pp. 02-64.

Giratjlt, Maurice. Equations intrinsèques du mouvement plan parallèle des fluides visqueux incompressibles en régime permanent. C. R. Acad. Sci., T. 182, No. 7 (15 fév. 1926), Paris, pp. 444-440.

- Sur une construction très générale des profils d'ailes par transformation

conforme d'un cercle.

c. R. Acad. Soi., T. 183, No. 26 (27 déc. 1926), Parte, pp. 1331-1333.

Girier, André. See Blanchet, Georges: Aviateurs contemporains. André Girier.

Glauert, Hermann, and C. N. H. Lock. The accuracy of the vortex theory of airscrews in the light of recent experimental work and its application to airscrew design.

Aeronautical Research Committee, Reports and Memoranda, No. 1040 (Ae. 229), June, 1926, London, 1926 pp. 10, diagr.

Glauert, Hermann. The analysis of experimental results in the windmill brake and vortex ring states of an airscrew.

Aeronautical Research Committee, Reports and Memoranda, No. 1026 (Ae. 222), Feb., 1926 Jjondon, 1926, pp. 8, tabls., diagr. Royal Aircraft Establishment, Report N. B. A. 568, Feb. 1926.

- The character of thick aerofoils.

Aeronautics, Tech. Rcpt. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 59-62.

- The efficiency of an airscrew.

Aeronautical Research Committee, Reports and Memoranda, No. 1034 (Ae. 227), May, 1926, London, 1926, pp. 11, tabls., diagr.

--The elements of aerofoil and airscrew theory.

Cambridge, Eng., The University Press, 1926, p. 228, diagrs.

- A generalized type of Joukowski aerofoil.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 77-82, tahls., diagr.

Glauert, Hermann, and A. B. Hartshorn. The interference of wind channel walls on the downwash angle and the taiisetting to trim.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 83-91, tabls., diagr.

Glauert, Hermann, and C. N. H. Lock. On the advantages of an open jet type of wind tunnel for airscrew tests.

Aeronautical Research Committee, Reports and Memoranda, No. 1033 (Ae. 226), May, 1926, London, 1926, pp. 10, diagr.

Glauert, Hermann. On the contruction of the slipstream of an airscrew. Royal Aircraft Establishment, Report N. B. A. 574, Feb. 1926.

•-• On the necessary size of aerodromes in order that a landing ma3' be made

if the engine fails when getting off.

Aeronautical Research Committee, Reports and Memoranda, No. 996 (Ae. 208), Jan., 1926, Londonj 1926, pp. 10, diagr.

- The performance of tandem systems. Part. I. Tandem systems. Part

II. Downwash behind a monoplane wing.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 66-70, tabls., diagr.

- The theory of the design of aerofoils, with an analysis of the experimental

results for the aerofoils R. A. F. 25, 26, 30 to 33.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 52-58, diagr.

- A theory of thin aerofoils.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1921-25, Vol 1. London, 1920, pp. 43-51, tabls., diagr.

- See Clark, D. B., L. P. Coombes, H. Glauert and A. S. Hartshorn: Lift

and drag of Junker monoplane. Comparison of model with full scale results.

Glendinning, W. G., and J. E. Ramsbottom. Report on further investigations of the effect of sunlight on aeroplane fabric. Part 2.

Aeronautics, Tech. Kept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 549-557, tabls.

Glidden tour. See Commercial aeronautics: Glidden tour of the air.

- See McConnell, B. M.: Glidden tour on wings; second annual commercial

airplane reliability tour.

Gliding, See Klemperer, W.: Theorie des Segelfluges.

Gloster.. Aerotecnica. Due apprarecchi "Gloster."

Rivista Aeronautica, Anno 2, N. 1 (gen. 1926), Roma, pp. 105-114, ill.

- The Gloster "Gamecock." A single-seater fighter with many novel

features.

Flight, Vol. 18, No. 15 (Apr. 15, 1926). London, pp. 218-221, ill.

- Two "Gloster" airplanes. The "Grouse II,"—Two-seat training airplane. The "Grebe II,"—Single-seat fighter.

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 7 (mimeographed), Washington, June 1926, pp. 9, ill. From "Flight," November 19,1925.

Glover, W. Irving. Air mail service.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, pp. 488-489, ill.

- Commercial aviation must be advertised the same as a new toilet soap or

chewing gum.

u. S. Air Services, Vol. 11, No. 11 (Nov. 1926), Washington, D. C, pp. 21-24. Glues. See Bocharoff, N. P. : Investigation of gelatine joiner's glues.. Glymes, R. de. Accouplement d'un indicateur de vitesse avec un altimètre pour obtenir un indicateur de vitesse altimétrique.

IJJe Congrès International de la Navigation Aérienne, T. 2, Paris, pp. 93-100, ill.

- See Haus, Fr., et R. de Glymes: La comparaison des mesures d'allongement des métaux.

Gold, E. A numerical index of meteorological conditions on an aerodrome or on an air route for comparison with flying statistics.

Ille Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 238-249, tabls

Goldsborough, Brice H, Navigating the airplane reliability tour. Aviation, Vol. 21, No. 10 (Sept. 6,1926), New York, pp. 408-409, ill.

Goldstrom, John. Russia's future in the air.

Aero Digest, Vol. 8, No. 2 (Feb. 1926), New York, pp. 78-80, ill.

Goodyear "Pilgrim." The Goodyear "Pilgrim" airship. A new American sporting dirigible.

Flight, Vol. 18, No. 18 (May 6, 1926), London, pp. 270-271, ill., diagr.

Gordon-Bennett. La Coupe, Gordon-Bennett des sphériques. Les Etats-Unis enlèvent le trophée.

L'Aérophile, 34e année, Nos. 11-12 (ler-15 juin 1926), Paris, pp. 163-165, ill. i

- The Gordon-Bennett balloon race.

Quarterly Journal of the Royal Meteorological Society, Vol. 52, No. 219 (July 1926), London, pp. 329-331, ill.

Gorjainofp, A. A., and G. I. Kouzmin. Edited by V. L. Alexandroff and V. P. Vetchinkin. Standard specification for statik tests of airplanes.

Transactions of the Central Aero-Hydrodynamical Institute, No. 25, u. S. S. R. Scientific-Technical Department of the Supreme Council of National Economy, No. 149, Moscow, 1926, pp. 104.

Gosslacj. Die Heinkel-Flugzeuge im Seeflug-Wettbewerb.

Zeitschr. Flugt. Motorluftschr., 17. Jahrg., 20. Heft (28 Okt. 1926), Müuehen, pp. 442-443.

Gosslau, F. Der deutsche Seeflug-Wettbewerb 1926.

Zeitschr. Ver. deutsch, Ing., Bd. 70, Nr. 49, 50 (4,11. Dez. 1926), Berliu, pp. 1641-1648, 16721674, ill.

Gottwaldt, Birger Ltjnd. See Amundsen, Roald Engelbregt Gravning:

Den t'0rste fluket over Polhavet. Gough, H. J. The effect of keyways upon the strength and stiffness of shafts subjected to torsional stresses.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 488-507, ill., tabls., diagr.

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.

Aeronautical Research Committee, Reports and Memoranda, No. 1022, (M. 38), Dec. 1925' London, 1926, pp. 6, ill. dagr.

Gough, H. J., D. Hanson, and S. J. Wright. The behaviour of single erystals of aluminium under statie and repeated stresses.

Aeronautical Research Committee, Reports and Memoraoda, No. 995 (M. 32), Nov., 1924, London, 1926, pp. 54, ill., diagr.

Gough, H. J., and H. J. Tapsell. Some comparative fatigue tests in special relation to the impressed conditions of test.

Aeronautical Research Committee, Reports and Memoranda, No. 1012 (M. 35), Apr., 1926 London, 1926, pp. 21, tabls.

Gough, H. J., D. Hanson, and S. J. Wright. Some further experiments on single crystals of aluminium employing reversed direct stresses.

Aeronautical Research Committee, Reports and Memoranda, No. 1024 (M. 40), Jan., 1926, London, 1926, p. 14, tabls.

Gough, H. J., S. J. Wright, and D. Hanson. Some further experiments on the behaviour of single crystals of aluminium under reversed torsional stresses. Aeronautical Research Committee, Reports and Memoranda, No. 1023 (M. 39), Jan., 1926, London, 1926, pp. 13, ill., diagr.

- A test on a speeimen consisting of three erystals under reversed torsional

stresses.

Aeronautical Research Committee, Reports and Memoranda, No. 1025 (M. 41), Jan., 1926, London, 1926, pp. 5, ill., tabls., diagr.

Gough, H. J. See Southwell, R. V., and H. J. Gough: On the concentration stresses of in the neighbourhood of a small spherical flaw; and on the propagation of fatigue fraetures in "statistically isotropic" materials. Graatz, F. Die Berechnung einseitig eingespannter, zweistieliger Rahmenrostträger unter Berücksichtigung einer beliebigen Rippenanzhai sowie veränderlicher Trägheitsmomente.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 19. Heft (14. Okt. 1926), München, pp. 411-419, ill., diagrs.

Graiîd. Influence de la zone thermique du travail sur la séleetion des métaux pour moteurs d'aviation. Application aux soupapes d'éehappement.

IHe Congrès International de la Navigation Aérienne, T. 3, Paris, [1925], pp. ss-109, ills., labls Revue de Métallurgie, Année 23, No. 6 (juin 1926), Paris, pp. 317-330, ill. Service Technique de l'Aéronautique, Bulletin Technique, No. 31, Fév. 1926), France, pp. 24, ill.

Graziani, C. L'impiego bellieo delT aviazione.

L'Aerotecnica, Giornale ed Atti dell' Associzaione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 134-166.

Great Britain. Aeronautiea militare. Gran Brettagua. Difesa aerea e forze aeree di riserva.

Rivista Aeronautiea, Anno 2, N. I (gea. 1926), Roma, pp. 93-94.

Great Britain. The air estimates.

Engineering, Vol. 121, No. 3140 (March 5, 1926), London, p. 304.

- Civil aviation in Great Britain.

Scient. Amer., Vol. 124 (Feb., 1926), New York, pp. 124-125, ill.

—4— On aviation and the Empire.

The Aeroplane, Vol. 31, Nos. 18-19 (Not. 3-10,1926), London, pp. 569-574, 597-606.

—:— On British aviation.

The Aeroplane, Vol. 31, No. 20 (Nov. 17, 1926), London, pp. 621-626

- On the attacks on the Air Ministry.

The Aeroplane, Vol. 31, No. 24 (Dec. 15, 1926), London, pp. 773-775.

- See Airships: On the coming of age of the British airship.

- See Estimates: The air estimates, 1926-27. A net increase of £486,990.

- See Estimates: On the air estimates.

- See 1925: Aeronautics in 1925.

- See Royal Air Force: Royal Air Force reorganization. Formation of air

defences of Great Britain.

- See Spanner, E. F. : The broken trident.

- See Surveying: Air survey in Britain.

Great Britain, Air Ministry. The approach towards a system of imperial air communications. Memorandum by the Secretary of State for Air, laid before the Imperial Conference, 1926, together with the Report of the Imperial Air Communications special sub-committee. London, H. M. Stationery Office, 1926, pp. xiii, 91, ill.

Green, F. M. Aeroplane joints and fittings.

Aircraft Engineer, suppl. Flight, Vol. 18, No. 12 (Mar. 25, 1926), London, pp. 178f-178h., ill.

- Use of metal for aeroplane construction.

Aircraft Engineer, suppl. to Flight, Vol. 18, No. 4 (Jan. 28, 1926), London, pp. 48d-48g, ill.

Greene, Howard E. Curtiss ships ready for air transport.

U. s. Air Services, Vol. 11, No. 3 (Mar. 1926), Washington, D. C, pp. 16-20, ill.

-- Society woman makes Army flying suits.

U. s. Air Services, Vol. 11, No. 1 (Jan. 1926), Washington, D. C, pp. 26-28, ill.

Greer, Rowan Allen. International aerial regulations. Prepared by Capt. Rowan A. Greer, representative of the Judge Advocate General's Department at the Air Service Engineering Division, McCook Field, Dayton, Ohio.

Washington, Government Printing Office, 1926, pp. ii, 90.

U. s. Office of Chief of Air Corps War Department, Air Service Information Circular (Aviation), Vol. 6, No. 506, July 15, 1926.

Gregg, Willis Ray. Aeronautical meteorology.

New York, The Ronald Press Company, a. b. Ronald Aeronautical Library C. d'e'F Chandler, Editor, 1926, pp. xii, 144, ill.

Gregg, Willis Ray, and J. Parker Van Zandt. The frequency of winds of different speeds at flying levels between New York and Chicago a further analysis of the records of the air mail service.

Hie Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 64-75, tabls.

Gregg, Willis Ray. Meteorological conditions along airwa37s.

National Advisory Committee for Aeronautics, Report No. 245, June 9, 1926, Washington, Government Printing Office, 1926, pp. 16, tab., diagrs.

- The wind factor in flight: An analysis of one j'ear's record of the air mail.

Hie Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 24-63, tabls., diagrs.

Grenier. See Beyne, Mazer, et Grenier: Inhalation d'oxygène pour vol à haute altitude.

Grenier, P. Rayon d'action d'un avion de bombardement.

L' Aérotechnique (L'Aéronautique, Sme année, No. 87), 4me année, No. 44 (août 1920), Paris, pp. 271-274, ill.

Grey, Charles Grey, and Leonard Bridgman. All the world's aircraft.

London, Sampson Low, Marston & Co., Ltd., 1926, pp. 459. 1926-27 edition.

Grimatjlt. Sur la détermination des facteurs de charge des avions.

Ille Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 227-234, diagr.

Grimatjlt, P. Le prix de la vitesse dans les avions de transport.

L'Aérotechnique (L'Aéronautique, 8me année, No. 86), 4me année, No. 42 (juil. 1926), Paris, pp. 233-236, diagr.

Grogan, J. D. Report on study of mechanical properties of silicon-aluminum alloys. I

Aeronautical Research Committee, Reports and Memoranda. No. 1028 (M. 43), June, 1926, London, 1926, pp. 16, ill., tabls., diagr.

- See Archbutt, S. L., and J. D. Grogan: Report on the accelerated ageing

of "Y" alloy.

Gronau. Erfahrungen über den Seeflugzeug-Wettbewerb.

Zeitschr. Flugt. Motorluftschr., 17. Jahrg., 20. Heft (28. Okt. 1926), München, pp. 445-447, ill;

Grosslau. Marineflugzeuge.

Zeitschr. Ver. deutscher Ing., Bd. 70, Nr. 40 (2. Okt. 1926), Berlin, pp. 1330-1331.

Grosvenor Cup. The Grosvenor Cup race.

The Aeroplane, Vol. 31, No. 12 (Sept. 22, 1926), London, pp. 396-408, ill.

Grulich, Karl. Anforderungen an Verkersflugzeuge und ihre Kraftanlagen. Munich, Oldenhurg.

Guerra, Ugo. La radio nell' aeronautica.

Rivesta Aeronautica, Anno 2, N. 8 (agosto 1926), Roma, pp. 32-63, ill.

- Sulla possibilità di trasmissiione di schizzi e disegni da bordo di un aeroplano a terra a mezzo della radiotelegrafia.

Rivista Aeronautica, Anno 2, N. 10 (ott. 1926), Roma, pp. 49-64, ill.

Gürtler, Karl. Die Vermessung aus dem Flugzeug im Dienste der Technik und Wirtschaft.

Zeit. Österr. Ing. Arch. Ver., 78. Jahrg., Nr. 33-34 (20. Aug. 1926), Wien, pp. 339-346, ill.

Guggenheim. The Guggenheim aircraft competition.

Aviation, Vol. 20, No. 26 (June 28, 1928), New York, p. 974.

Guggenheim, Daniel. The Daniel Guggenheim fund for the promotion of

aeronautics.

Science, Vol. 64, No. 1650 (a'ig. 13, 1926), Garrison, N. Y., p. 152.

- Daniel Guggenheim gives $2,500,000 to foster aviation.

Aviation, Vol. 20, No. 4 (Jan. 25, 1926), New York, pp. 106-107, ill.

- Daniel Guggenheim gives $2,500,000 more to foster aeronautics

U. s. Air Services, Vol. 11, No. 2 (Feb. 1926), Washington, D. C, pp. 13-15.

- [A fund of 500,000£ to assist aeronautics.]

Nature, Vol. 117, No. 2934 (Jan. 23, 1926), Loodon, p. .133.

- See Daniel Guggenheim Fund: The Daniel Guggenheim Fund for the

promotion of aeronautics. . . .

Guggenheim, Harry F. Aviation and confidence.

Aviation, Vol. 20, No. S (Feh. 22, 1926), New York, pp. 250-251, ill.

- Daniel Guggenheim Fund for the promotion of aeronautics. Pamphlet

number two. Tentative report on program.

New York, Feb. 1, 1920, pp. 19.

Guggenheim Aeronautics School. Opening of Guggenheim Aeronautics School. Aviation, Vol. 21, No. 22 (Nov. 29, 1926), New York, p. 920, ill.

106659—28-5

Guggenheim Fund. The Daniel Guggenheim fund. An "open international aircraft competition" to be held.

Flight, Vol. 18, No. 28 (July 15, 1926), London, p. 436.

- Grants to California educational institutions.

Sciences, n. s., Vol. 64 (Aug. 13, 1926), Garrison, N. Y., p. 153.

School and Society, Vol. 24 (Aug. 21, 1926), Garrison, N. Y., pp. 234-235.

- The Guggenheim aeronautics fund.

Aviation, Vol. 20, No. 6 (Feh. 8, 1926), New York, pp. 180-181.

- Guggenheim Fund assists Michigan University.

Aviation, Vol. 21, No. 25 (Dec. 26, 1926), New York, pp. 1041-1042.

- Guggenheim Fund endows universities.

Aviation, Vol. 21, No. 10 (Sept. 6, 1926), New York, p. 402.

- Guggenheim Fund to promote safety.

Aero Digest, Vol. 9, No. 1 (July 1926), New York, p. 66.

Guggenheim Prize. The Guggenheim £40,000 prize competition. The Aeroplane, Vol. 30, No. 26 (June 30, 1926), London, pp. 660-661.

GumoNi, Allessandro. Turbomotore a compressore a nafta.

Kivista Aeronautica, Anno 2, N. 8 (agosto 1926), Roma, pp. 3-29, ill. Guimmelfarb. See Licochine et Guimmelfarb: Calculs aörodynamiques des performances d'un avion.

Gurnet, F. J., and L. H. G. Dines. Revolving pilot balloons.

Quarterly Journal ol the Royal Meteorological Society, Vol. 52, No. 219 (July 1926), London, p. 276.

Gymnich, Alfried. Deutscher und englischer Verkehrsflug zeugbau.

Luitfahrt, 30. Jahrg., Nr. 8 (20, April 1926), Berlin, pp. 115-116, ill.

—■— Die Flugpraxis. Handbuch für Flugschüler.

Bibliothek für Luftschiffahrt und Flugtechnik, Berlin, Richard Carl Schmidt & Co., 1926, pp. vii, 214, ill.

- Leichtmotorflugzeuge.

Leipzig, Verlag Grethlein & Co.

- Segelflug-Sport.

Leipzig, Verlag Grethlein & Co.

- Das Sportflugzeug.

Flugtechnische Bibliotek, Bd. 15, p. 192, ill. Gyrostatic compas. See Beghin, H., et P. Monfaix: Realisation d'un compas gyrostatique zenithal amorti.

H

Haduon, J. D. Metal spars.

Aircraft Engineer, suppl. Flight, Vol. 18, No. 8 (Feb. 25, 1926), London, pp. llOc-HOe. National Advisory Committee for Aeronautics, Technical Memorandums No. 368, July 1, 1926 (mimeographed), Washington, June 1926, pp. 9, ill. From "Flight," February 25,1926.

Had field, Isabel H. See Barr, Guy, and Isabel H. Hadfield: Some physico-chemical studies on the effect of sunlight on cotton.

Hale, Frederick. See United States Congress. Senate. Committee on naval affairs: Aircraft and aircraft equipment in the navy and marine corps.

Hall, Charles Ward. Metal construction of airplanes.

Aviation, Vol. 20, No. 20 (May 17,1926), New York, pp. 744-748, ill.

Hall, Ranuolph F. Convertible monoplane-biplane wings.

Aviation, Vol. 20, No. 17 (Apr. 26, 1926), New York, pp. 632-634, diagr.

- Possible lines of aeronautical development.

Aviation, Vol. 20, No. 7 (Feb. 15, 1928), New York, pp. 218-220.

Hall, S. Scott. Stalled flying.

Journ. Roy. Aer. Soc, Vol. 30, No. 190 (Oct. 1926), London, pp. 612-614.

Halle. See Köhler, Raimund: Leipzig und Halle im Luftverkehr. Halsted, Abthur. Bureau of Standards exhibits laboratories working on aeronautical problems.

u. S. Air Services, Vol. 11, No. 3 (Mar. 1926), Washington, D. C, p. 20. Hamilton Rice Expedition. The hydroplane of the Hamilton Rice Expedition, 1924-1925.

The Geographical Journal, Vol. 68, No. 1, 3 (July, Sept. 1926), London, pp. 27-43, 286, ill. From the report prepared at the direction of Dr. Hamilton Rice for Major-General Mason M. Patrick, Chief of the Air Service, U. S. Army, by Capt. A. W. Stevens, U. S. Air Service.

Hammer, F. W. Die Flüge über den Atlantischen Ozean und der Anteil Kolumbiens daran.

Luftweg, Jahrg. 1926, Heft 14 (25 Juli 1926), Berlin-München, pp. 149-150.

- Versicherung und Sicherheit.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 18. Heft (28. Sept. 1926), München, pp. 383384, diagr.

Handlet Page. The Handley Page Hamlet.

The Aeroplane, Vol. 31, No. 15 (Oct. 13, 1926), London, pp. 504-506, ill, diagr. Flight, Vol. 18, No. 41 (Oct. 14, 1926), London, pp. 671-674, ill., diagr. National Advisory Committee for Aeronautics, Aircraft Circulars, No. 20 (mimeographed), Washington, November 1926, pp. 7, ill. From "The Aeroplane," October 1926 and "Flight," October 14, 1926.

- The Handley Page "Hamlet" monoplane.

Aero Digest, Vol. 9, No. 6 (Dec. 1926), New York, p. 462, ill.

- The Handley-Page "Hampstead" commercial aeroplane.

Engineering, Vol. 121, No. 3142 (March 19, 1926), London, pp. 377-379, ill.

- The Handley Page W. 10.

The Aeroplane, Vol. 30, No. 7 (Fob. 17, 1926), London, pp. 178-180, ill.

- A new passenger machine for Imperial Airways. The Handley Page W.

10, with two Napier "Lions."

Flight, Vol. 18, No. 7 (Feb. 18, 1926), London, p. 89, ill.

- The prevention of accidents in commercial aviation.

Hie Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 255-264.

- See McLaughlin, George P. : Handley Page air liner.

Handlet Page, Frederick. Tests on an aerofoil with two slots suitable for an aircraft of high performance.

Aircraft Engineer suppl. to Flight, Vol. 18, No. 4 (Jan. 28,1926), London, pp. 48a-48d.

- Tests on an airfoil with two slots suitable for an aircraft of high performance. Lift, drag, rolling and yawing moment measurements.

National Advisory Committee for Aeronautics, Technical Memorandums No. 369, June 8, 1926 (mimeographed), Washington, July 1926, pp. 12, diagrs. From "Flight," January 28, 1926.

Hangars. An inexpensive serviceable hangar.

Aviation, Vol. 20, No. 11 (Mar. 15, 1926), New York, pp. 370-371, diagr.

- See Arthur, William: Modern hangars.

- See Edlund, G.: Flughäfen.

- See Karachi: Airship shed at Karachi.

- See Leo: Der Flughäfen in Hamburg-Fuhlsbüttel.

- See Sauernheimer: Der Zentralflughafen Berlin.

- See Spalding, W. T. : Portable tent hangars.

- See Thomas, M.: Les aerodromes en hiver.

Hanshue, Harris M. Air mail operators' viewpoint.

Aero Digest, Vol. 9, No. 2 (Aug. 1926), New York, p. 95.

- The Los Angeles-Salt Lake City air mail line.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, pp. 493-494, ill.

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 a portion of a cycle of repeated tensile stresses.

- See Gough, H. J., D. Hanson, and S. J. Wright: Some further experiments

on single crystals of aluminium employing reversed direct stresses.

- See Gough, H. J., S. J. Wright, and D. Hanson: Some further experiments

on the behaviour of single crystals of aluminium under reversed torsional stresses.

- See Gough, H. J., S. J. Wright, and D. Hanson: A test on a specimen

consisting of three crystals under reversed torsional stresses.

HAEniNG, A. C, and W. T. See Bruner, D. L., A. C, and W. T. Harding:

Comparative flood-light test. Harding, John. See Thomas, Lowell: The first world flight. . Being the personal narratives of Lowell Smith, Erik Nelson, Leigh Wade, Leslie Arnold, Henry Ogden and John Harding. Harding, W. T. Twenty-four inch revolving incandescent beacon. Air Corps type B-3. ' •

Air Corps Information Circular, Vol. 6, No. 574 (Oct. 15, 1926), Washington, Government Printing Office, 1926, pp. 7, ill., diagrs.

Harmon, B. F. The past and the future of defence against aircraft.

Coast Artillery Journal, Vol. 63, Nos. 5, 6 (Nov., Dec, 1925), Fortress Monroe, Va., pp. 449-460, 555-566.

Harper, Harry. The steel construction of aeroplanes.

Glasgow, Printed by R. Maclehose & Co., ltd., 1924, pp. vil, 47, ill.

Harris, R. G. 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.

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.

Aeronautical Research Committee, Reports and Memoranda, No. 991 (Ae. 202) Apr.. 1925, London, 1926, pp. 7, ill., diagr.

Harris, R. G., and L. E. Caygill. Further experiments on honeycomb radiators.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 438-457, tabls., diagr.

Harris, R. G., and A. S. Hartshorn. Lateral force and moments on Avro model.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 244-249, tahls., diagr.

Harris, R. G., and W. K. Alford. Wind channel tests on radiators.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 422-437, tabls., diagr.

Hart, Ivor B. The mechanical investigations of Leonardo da Vinci.

London, Chapman and Hall, Ltd., 1926. Hartshell, H. The soaring flight problem.

Aviation Vol. 20. No. 26 (June 28, 1926), New York, pp. 975-977, diagr.

Hartshorn, A. S., and H. Davies. Test of two aerofoils, R. A. F. 27 and R. A. F. 28.

Aeronautical Research Committee, Reports and Memoranda, No. 1027 (Ae. 225), Apr., 1920, London, 1926, pp. 10, tahls., diagr. -

Hartshorn, A. S. See Bradfield, F. B., and A. S. Hartshorn: Test of four thick aerofoils, R. A. F. 30, 31, 32 and 33.

- See Bradfield, F. B., and A. S. Hartshorn: Test of three aerofoils suitable

for high speed. A. D. 1, Sloane, and R. A. F. 26.

- See Bradfield, F. B., A. S. Hartshorn, and L. E. Cay gill: Wind channel

tests of slot and aileron control on a wing of R. A. F. 15 section. Part I. When the central portion of the wing is R. A. F. 15. Part II. When the central portion of the wing is slotted and fitted with a flap.

- See Clark, D. B., L. P. Coombes, H. dauert, and A. S. Hartshorn: Lift

and drag of Junker monoplane. Comparison of model with full scale results.

- See dauert, Hermann, and A. S. Hartshorn: The interference of wind

channel walls on the downwash angle and the tailsetting to trim.

- See Harris, R. G., and A. S. Hartshorn: Lateral force and moments on

Avro model.

Haskelite. Haskelite history.

Aero Digest, Vol. 9, No. 2 (Aug. 1926), New York, pp. 146-147.

Hattori, Ktjnio. See Terada, Terahiko, and Kunio Hattori: Some experiments

on motion of fluids. Part I, II, and III. Haus, Fr., et R. de Glymes, La comparison des mesures d'allongement des

métaux.

Ille Congrès International de la Navigation Aérienne, T. 3, Paris, [1925], pp. 83-87, ill. Haus, Fr. Représentation graphique des qualités de stabilité statique longitudinale d'un avion.

Ille Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 386-397, ill.

Havhill, Clinton H. The drag of airships.

National Advisory Committee for Aeronautics, Technical Notes No. 247 and 248, Sept. 29, Oct. 12, 1920 (mimeographed), Washington, September, October, 1926, pp. 25, 17, tahles.

Hawker "Cygnet." A Hawker light,plane and the R. A. E. light aero club.

Flight, Vol. 18, No. 6 (Feb. 11, 1926), London, p. 77, ill.

Haw. Der Haw-Metallpropeller.

Luftweg, Jahrg. 1920, Heft 14 (25. Juli 1926), Berlin-München, pp. 151-152, Ol. Hawker "Danecock." An Angle-Danish alliance. Hawker single-seater fighters for Denmark.

Flight, Vol. 18, No. 3 (Jan. 21, 1926), London, pp. 30-33, ill.

Heald, C. B. Some medical aspects of air transport.

Ille Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 49-84, ill. Heald, R. H. See Dryden, Hugh L., and R. H. Heald: Investigation of turbulence in wind tunnels by a study of the flow about cylinders. Heard, Cecil G. Pressure distribution over a U. S. A.-27 aerofoil with square wing tips—model tests.

Mechanical Engineering, Vol. 48, No. 12 (Dec. 1926), New York, pp. 1401-1403, ill.

Heath. The Heath sport plane.

Aero Digest, Vol. 9, No. 4 (Oct. 1926), New York, p. 288, ill. Aviation, Vol. 21, No. 8 (Aug. 23, 1926), New York, pp. 321, 322, ill.

Heemstede, Berch Van. Réglementation douanière aéronautique internationale.

Ille Congrès International de la Navigation Aérienne, T. 1, Paris, [1926], pp. 33-38.

- Règles de construction et de réception des avions commerciaux.

Ille Congrès International de la Navigation Aérienne, T. 3, Paris, [1925], pp. 71-82. Heinkel. Heinkel airplane H. D. 39 for carrying newspapers.

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 13, (mimeographed) Washington, August 1826, pp. 9, ill. From "Flugsport," May 1, 1926.

Heinkel. The Heinkel H. E. 5.

Tha Aeroplane, Vol. 31, No. 3 (July 21, 1926), London, p. 104, ill.

- Heinkel plane with Whirlwind engines.

Aero Digest, Vol. 9, No. 6 (Dec. 1926), New York, p. 460, ill.

- See Gosslau: Die Heinkel-Flugzeuge im Seeflug-Wettbewerb.

Heinlein, Fritz. Experimental investigation of the physical properties of

medium and heavy oils, their vaporization and use in explosion engines. I-IV.

National Advisory Committee for Aaronauties, Technical Memorandums Nos. 362 and 363, 384, 392, May 16 and 21, Oct. 21, Dec. 23,1926. (mimeographed), Washington, May, Oct., Dec, 1926, pp. 25, 37, 22, 38, ills., diagrs., tables.

From "Der Motorwagen," Oct. 10, 31, Dec. 20, 1925; Feb. 10, Sept. 9, 30, Nov. 10, 1926.

Helicopters. Avion à voilure tournante.

La Technique Moderna, T. 18, No. 14 (15 Juil. 1926), Paris, p. 443.

- »See Cievra, Juan de la: The development of the Autogyro.

- »See Garin: L'elicottera "Garin."

- »See Lamé, Maurice Lue Valére: Le vol vertical et la sustentation indépendante; hélicoptères, gyroptères, avions-hélicoptères.

- See Moineau, R. : Avion à voilure tournante.

- »See Rotating wings: The rotating wing in aircraft.

- »See Sabatier: M. Sabatier, ingénieur en chef du service technique, nous dit

ce qu'il pense de la question de l'hélicoptère.

- »See Wimperis, H. E. : The rotating wing in aircraft.

Helium. Helium production.

Enginearing, Vol. 121, No. 3138 (Fab. 19, 1926), London, pp. 221-223.

- Helium production in the United States.

Engineering, Vol. 121, No. 3132 (Jan. 8, 1926), London, p. 50.

- »See Atmosphere: The rare gases of the atmosphere.

- See Chandler, Charles de Forest, and W. S. Diehl: Balloon and airship

gases; pt. 1, hydrogen and helium production processes, the compression and storage of gases; pt. 2, physics of gases.

- See Elworthy, R. T. : Helium in Canada.

- See Hydrogen: The reported conversion of hydrogen into helium.

- See Kano, Yosihiko, and Bunnosuke Yamaguti: On the contents of helium

and other constituents in the natural gases of Japan.

- See Keesom, W. H. : La courbe de fusion de l'hélium.

- See Keesom, W. H. : L'hélium solidifié.

- See McLennan, J. C. : Helium in Canada.

- See Paneth, Fritz, und Kurt Peters: Uber die Verwandlung von Wasserstoff in Helium.

Heller, Arnold. Motorwagen und Fahrzeugmachinen für flüssigen Brennstoff; ein Lehrbuch für den Selbstunterricht und für den Unterricht an technischen Lehranstalten.

Berlin, J. Springer, 1925, ill., diagrs.

Helmholtz. See Kehler: Helmholtz in seinem Urteil über Flugmaschinen und Luftschiffe.

Hemke, Paul E. Influence of the orifice on measured pressures.

National Advisory Committee for Aaronauties, Technical Notes No. 250, Nov. 9, 1926 (mimeographed), Washington, November 1926, pp. 7, ills., diagrs.

Hemming, H. Air surveying.

Ilia Congrès International da la Navigation Aérienne, T. 1, Paris [1925], pp. 291-302.

Hemming, H. Colonial aviation.

Hie Congrès International de la Navigation Aérienne, T. 1, Paris, [1925] pp. 303-313.

Henderson, Paul. Winged mail to the southwest.

Aero Digest, Vol. 8, No. 6 (June 1926), New York, p. 335. Hendon, See King's Cup: The King's Cup air race to be held on Jul}' 9 and 10, with start and finish at Hendon.

Henrickson, H. B. See Eaton, Herbert Nelson, K. H. Beig, W. G. Brombacher, W. W. Frymoyer, H. B. Henrickson, C. L. Seward, and D. H. Strother: Aircraft instruments.

Henrt-Coüannier, André. Legitimate de la guerre aérienne. Opinions recueillies.

Paris, Per Orbem, 1925, pp. xv, 232.

Hercules. The testing of the Hercules.

The Aeroplane, Vol. 31, No. 14 (Oct. 6, 1926), London, p. 474, ill.

Heron, S. D. The age hardening of " Y" alloy.

Engineering, Vol. 122, No. 3178 (Dec. 10, 1926), London, p. 731.

Herrera. Un inveto sensacional, de applicaciön a los dirigibles. Memorial des Ingenieros del Ejército, N. 8, agosto 1926.

Herrmann, Fred. La simplicité dans la construction métallique des avions.

nie Congrès International de la Navigation Aérienne, T. 3, Paris, [1925], pp. 1-18, ill. Herrmann, H. Schwimmer und Flugbootskörper.

Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt E. V. (WGL) 14. Heft, Dez. 1926, München und Berlin, pp. 126-154, ill., diagrs., tables.

Herset, Mato D. Note on a problem in radio navigation.

IHe Congrès International de la Navigation Aérienne, T. 1, Paris, [1925[, pp. 203-205.

Herzmark. Le démarreur d'aviation Herzmark AV 2.

L'Aérophile, 34e année, Nos. 5-6 (ler-15 mars 1926), Paris, p. 72, ill.

Hess, V. F. Die elektrische Leitfähigkeit der Atmosphäre und ihre Ursachen. Braunschweig, Viaweg und Sohn, 1926, pp. 172.

Higginbottom, C. Across Canada by seaplane.

Aero Digest, Vol. 9, No. 6 (Dec. 1926), New York, pp. 430-431, 483. ill.

Higgins, George J. The characteristics of the N. A. C. A. M-12 airfoil section.

National Advisory Committee for Aeronautics, Technical Notes No. 243, Aug. 6, 1926 (mimeographed), Washington, August 1926, pp. 6, diagrs., tables.

- The N. A. C. A. CYH airfoil section.

National Advisory Committee for Aeronautics, Technical Notes No. 240, June 29, 1926 (mimeographed), Washington, June 1926, pp. 4, ill., diagrs., tables.

Hildebrandt. Flugplatzdisziplin.

Luftweg, Jahrg. 1926, Heft 11 (10. Juni 1926), Berlin-München, pp. 116-117.

- Haftpflicht für Flurschäden?

Luftweg, Jahrg. 1926, Heft 22 (25. Nov. 1920), Berlin-München, pp. 224-225.

Hill. Hill tailless airplane.

Scient. Amer., Vol. 135 (Aug. 1926), New York, pp. 143-145, ill., diagrs.

Hill, George C. See Dryden, Hugh L., and George C. Hill: Wind pressures on structures.

Hill, G. T. R. Captain Hill's lecture on the tailless airplane.

Aviation, Vol. 20, No. 22 (May 31, 1926), New York, pp. 831-833, ill.

- The tailless aeroplane.

Journ. Roy. Aero. Soc, Vol. 30, No. 189 (Sept. 1926), London, pp. 519-544, ill. Engineering, Vol. 121, No. 3148 (April 30, 1926), London, pp. 566-563, ill.

Hill, R. M., and H. L. Stevens. Notes on stalled flying.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 170-178, diagr..

Hill, Thomas L. American Soc. for promotion of aviation. Aviation, Vol. 21, No. 21 (Nov. 22, 1920), New York, p. 886.

Hirschauer. La mission Hirschauer.

L'Aérophile, 34e année, Nos. 1-2 (ler-15 jan. 1926), Paris, pp. 22r23.

Hirschauer, Louis. Après 5000 kilomètres en avion de tourisme. L'Aéronautique, Sme année, No. 81 (fëv. 1926), Paris, pp. 53-56, ill.

- Le tour de la Méditerranée en avion de tourisme par l'ingénieur en chef

Hirschauer.

L'Aérophile, 34e année, Nos. 19-29 (ler-15 oct. 192S), Paris, pp. 294-299, ill.

Hirschauer, Louis, et Ch. Dollpus. L'année aéronautique 1925-1926. Paris, Dunod, 1926, pp. 361, ill.

HisPANO-SuiZA. Le moteur Hispano-Suiza.

L'Aérophile, 34e année, Nos. 9-19 (ler-15 mai 1926), Paris, p. 139, ill.

History. Historique de l'aéronautique. Les grandes dates de l'aérostation : Ballons libres, de 1783 à 1919. Dirigeables, de 1852 à 1919. Les grandes dates de l'aviation, de 1913 à 1919. Progression des records du monde d'aviation de 1906 à 1926: Vitesse.—Altitude.—Durée.—Distance. Les grands voyages et les manifestations sportives décrits dans l'Année Aéronautique de 1919 à 1926.

Hirschauer, L., et Ch. Dollfus: L'Année Aéronautique 1925-1926. Paris, Dunod, Éditeur, 1926, pp. 285-307.

- Man's desire for wings.

Independent, Vol. 116 (Jan. 16,1926), Boston, pp. 09-72, ill.

- Story of the first flight.

Aero Digest, Vol. 9, No. 6 (Dec. 1926), New York, pp. 422-425, 476, ill.

- See Ariel: The world's first aeroplane, 1843.

- See Boffito, Giuseppe: I Dedalei ossia gli assertori ed esperimentatori del

volo diretto.

- See Boffito, Giuseppe: Due romanzi aviatori! del settecento.

- See Hurst, Mont: Some pioneers of the air.

- See Morley-Jenkins, P. : Pirst aerial voyage in England.

- See Royal Aeronautical Society: The Royal Aeronautical Society's sixtieth anniversary.

- See Rozier, Pilâtre de: Alla memoria di Pilâtre de Rozier.

- See Sayers, W. H.: Fifteen years of the aircraft industry.

- See Women aeronauts: Some early women aeronauts.

Ho are, Samuel John Gurnet. Sir Samuel Hoare's speech at the Imperial Conference.

Flight, Vol. 18, No. 44 (Nov. 4, 1926), London, pp. 720-723.

- See Cairo-Karachi: The first imperial air route. Sir Samuel Hoare

inaugurates the Cairo-Karachi air route.

Hoeppner, G. von. Der Deutsche Seeflug-Wettbewerb 1926.

Luftweg, Jahrg. 1926, Heft 15 (10. Aug. 1926), Berlin-München, pp. 157-160. Höhndorp, P. Verfahren zur Berechnung des Auftriebes gegebener Tragflächen-Profile.

Zeitschrift für angewandte Mathematik und Meehanik, Jahrg. 6, Nr. 4 (Aug. 1926), Berlin, pp. 265-283, ill.

Hopf, W. Luftfahrt.

Zeitscbr. Ver. deutscher Ing., Bd. 70, Nr. 4 (23 Jan. 1926), Berlin, p. 134.

Holland, Charles H. Importance of air insurance.

Aero Digest, Vol. 9, No. 2 (Aug. 1926), New York, pp. 102, 159.

Hollyhock, W. S. Lug design.

Aircraft Engineer, suppl. Flight, Vol. IS, No. 39 (Sept. 30, 1926), London, pp. 636c-636e, diagr.

Holt, H. S. Civilian and airship parachutes.

The Aeroplane, Vol. 30, No. 12 (Mar. 24, 1926), London, pp. 316-320, ill.

Homburg, Robert. Aviation et T. S. F.

Revue Juridique Internationale de la Locomotion Aérienne, oct.-nov.-déc. 1020, Paris, pp. 393-401.

Hooper, M. S. Bernoulli's theorem in aerodynamics.

Journ. Roy. Aer. Soc., Vol. 30, No. 190 (Oct. 1926), London, pp. 607-611. Horton, Harry M. Story of the first communication by radio from a flying plane to earth.

TJ. S. Air Services, Vol. 11, No. 3 (Mar. 1926), Washington, D. C, pp. 21-23, ill. Hosokawa, Yahei. See Takemura, Kango, and Yahei Hosokawa: Eye-shaped

end of bar investigated by photo-elastic method. Hourwich, Iskander, and W. J. Foster. Air service engine handbook. . Comp, by Iskander Hourwich, formerly assistant engineer in charge, Power plant laboratory at engineering division, McCook field, Dayton, Ohio. 1st ed., September, 1925. Pub. by direction of the chief of Air service and under the supervision of John F. Curry, major, Air service. [Dayton? O., 1925?], pp. xxv, 73S, ill., diagrs., tables.

H0VER, Johan Einar. See Amundsen, Roald Engelbregt Gravning: DeD f0rste flukt over Polhavet. . . .

Howard, H. B. Some problems in aeroplane structural design.

Journ. Roy. Aer. Soe., Vol. 30, No. 181 (Apr. 1926), London, pp. 238-206, diagr.

Howarth, C. Notes on stalled flying.

Journ. Roy. Aer. Soc, Vol. 30, No. 186 (June 1926), London, pp. 394-402.

- 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.

Hubbard, Henry D. National Bureau of Standards; its functions and activities.

Department of Commerce, Bureau of Standards, Circular No. 1, Washington, Government Printing Office, 1925, pp. 113, ill.

Hübner, W. See Koppen, J. v., und W. Hübner: Beschleunigungs-Messungen an Flugzeugen. i

Huff, Daland. The Huff Daland bomber XLB-1.

Aviation, Vol. 21, No. 6 (Aug. 9,1926), New York, pp. 252, 254, ill., d;a'=T.

- Huff Daland "Cyclops" described. L

U. S. Air Aervices, Vol. 11, No. 10 (Oct. 1920), Washington, D. C, pp. 41-43, ill.

- The Huff Daland plant.

Aero Digest, Vol. 8, No. 2 (Feb. 1926), New York, p. 71, ill.

Huguenard, E., A. Magnan, A. Planiol. L'accélcrographe H. M. P. son application à la mesure des accélérations en vol.

Service Technique de l'Aéronautique, Bulletin Technique, No. 30, Jan. 1926, Trance, pp. 48, ill.

- Les appareils à fils chauds leur application à l'étude des mouvements

atmosphériques.

Service Technique de l'Aéronautique, Bulletin Technique, No. 32, (mars 1926), France, pp, 08, ¡11.

- Nouvelles expériences sur les conditions mécanique du vol des avions.

Bulletin Technique N. 38 du Service Technique de l'Aéronautique, dicembre 1926. France, pp. 88, ill.

Hulls. See Herrmann, H.: Schwimmer uud Flugbootskörper.

Hunt, F. L. New types of aircraft instruments.

Journal ot the Optical Society ot America and Review of Scientific Instruments, Vol. 12 No. 3 (Mar. 1926), Menasha, Wis., pp. 227-269, ill.

Hurst, Mont. Some pioneers of the air.

Aero Digest, Vol. 9, No. 0 (Dec. 192*5), Now Vorlc, p. 429, ill.

106659—28-6

Htjth, Fritz. Störungen am Flugmotor, ihre Ursachen, AufEndung und Beseitigung nebst Flugmotorenkunde.

Berlin, Verlag Richard Carl Schmidt & Co., 1926, pp. 156, ill.

Hyhrogen. The reported conversion of hydrogen into helium. Nature, Vol. 118, No. 2971 (Oct. 9, 1926), London, pp. 526-527.

F. Paneth and K. Peters.—The transformation of hydrogen into helium. Berichte German Chemical Society.

- See Chandler, Charles de Forest, and W. S. Diehl: Balloon and airship

gases; pt. 1, hydrogen and helium production processes, the compression and storage of gases; pt. 2, physics of gases.

- See Paneth, Fritz, und Kurt Peters: Über die Verwandlung von Wasserstoff in Helium.

Hydroplanes. Studio sistematico alla vasca dei galleggianti a scafo per idrovolanti.

Eendiconti Tecnici della Direzione Generale del Genio Aeronautica, anno 14, N. 3 (sett. 1926).

- See Magaldi, G. : Cenni sul problema dei grandi idrovolanti.

I

Idrac, P. Sur des enregistrements du champ électrique de l'atmosphère jusqu'à 20,000-= d'altitude.

C. E. Acad. Sei., T. 182, No. 2« (28 juin 1926), Paris, pp. 1634-1635.

- »See Charcot et P. Idrac: Sur un phénomène de dépression atmosphérique

produit sous le vent d'un obstacle élevé.

Ignition. See Brode, R. B., D. W. Randolph, and F. B. Silsbee: Electrical characteristics of spark generators for automotive ignition.

Imbrecq, J. Garanties nécessaires.

Revue Juridique Internationale de la Locomotion Aérienne, juil.-août-sept. 1926, Paris,5pp. 273-275.

Imperial airways. Imperial Airways, new air fleet.

Flight, Vol. 18, No. 14 (Apr. 8, 1926), London, pp. 201-204, ill.

India. The air route to India.

Flight, Vol. 18, No. 50 (Dec. 16, 1926), London, p. 837, ill. Industry. »See Bolshevism: On Bolshevism in the aircraft industry. Inqlis, Henry B. Air bombing.

Aero Digest, Vol. 9, No. 1 (July 1926), New York, pp. 10-12, 56-57, 75, ill. Inoktjty, Tttneo. On the distribution of shearing stresses in beams of certain cross-sections.

Report of the Aeronautical Research Institute, Tokyo Imperial university, Vol. 2, 5, No. 19 (Aug. 1926), Tokyo, pp. 145-204, ill.

Insley, Robert. »See Jones, E. T., R. Insley, F. W. Caldwell, and R. F. Kohr: Aircraft power plants.

- »See Power plants: Aircraft power plants. Part I—Aircraft engines, by

Edward T. Jones, and Robert Insley. Part II—Propellers, by Frank W. Caldwell. Part III—Water ballast recovery, by Robert F. Kohr.

Instruments. Aircraft instruments.

New York, The Ronald Press Company, 1926, pp. 260, ill.

- Disposition des instruments de bord.

L'Aéronautique, 8me anné, No. 83 (avril 1926), Paris, pp. 145-146, ill.

- Guiding the last flyer back home.

Pop. Mech., Vol. 46 (July 1926), Chicago, pp. 115-118, ill.

- Notes on air speed indicators.

Aviation, Vol. 21, No. 24 (Dec. 13, 1926), New York, pp. 1001-1002, ill.

Instrument. A really useful micrometer.

Flight, Vol. 18, No. 48 (Dec. 2, 1926), London, p. 795, ill. A combination incb-metric micrometer.

——■ Speed and drift indicator.

Scient. Amer., Vol. 135 (July 1926), New York, p. 65, ill.

- Unsung heroes of the air service; man who tests aircraft instruments.

Scient. Amer., Vol. 135 (July 1926), New York, p. 54, ill.

- See Clarke, N. R.: Are we over the Pole?

- See Eaton, Herbert Nelson, K. H. Beig, W. G. Brombacher, W. W. Fry-

moyer, H. B. Henrickson, C. L. Seward and D. H. Strother: Aircraft instruments.

- See Huguenard, E., A. Magnan, et A. Planiol: Les appareils ä fils chauds

leur application â l'étude des mouvements atmosphériques.

- See Huguenard, E., A. Magnan, et A. Planiol: Nouvelles expériences sur

les conditions mécaniques du vol des avions.

- See Hunt, F. L.: New type of aircraft instruments.

——■ See Parker, R. C. : The aircraft bubble sextant, Type A.

Insurance. Tableau d'assurances aéronautiques.

L'Aéronautique, 8me année, No. 83 (avril 1926), Paris, p. 128-129.

- See Holland, Charles H.: Importance of air insurance.

- See Lamplugh, A. G.: Some aspects of commercial insurance.

- See Landrien, Félix: Les assurances aériennes. Note au sujet des projets

présentés et résolutions notées au Vile Congrès du Comité Juridique International a Lyon, en septembre 1925.

International balloon race. Results of the International balloon race. Aero Digest, Vol. 9, No. 2 (Aug. 1926), New York, p. 147.

International Chamber op Commerce. Commercial aviation. . . . Third congress, Brussels, June 21-27, 1925.

Paris, International Headquarters, 1925, pp. 16. Brochure No. 37.

International league of aviators. The International League of Aviators. Official inauguration in Paris.

Flight, Vol. 18, No. 24 (June 17, 1926), London, p. 354, ill.

Ireland. See Fitzmaurice, James C. : The Irish air force.

Ireland Meteor. The Ireland Meteor.

Aviation, Vol. 20, No. 23 (June 7, 1926) New York, pp. 878-879, ill. Iron. See Caillor, R.: Dosage du phosphore daus les produits de la sidérurgie.

- See Woodward, W. E.: The metallography of steel and cast iron.

Irrawaddy. Aerial survey of the tidal forests of the Irrawaddy.

Geographical Journal, Vol. 68, No. 3 (Sept. 1926), London, pp. 282-283. Journal of Ecology, Sept. 1925. Geographical Journal, Vol. 66, p. 455.

- See Burma: Aerial mapping of Burmese forests.

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

Aeronautical Research Committee, Reports and Memoranda, No. 997 (Ae. 209), Dec., 1925, London, 1926, pp. 15, ill., tabls., diagr.

- Experiments on a model of a Bristol Fighter aeroplane (l/10th scale.)

Section I. Force and moment measurements at various angles of yaw.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1928, pp. 276-286, tahls., diagr.

- Forces and moments (including those due to controls) on a model Fairey

"N 4" flying boat "Atalanta," at various angles of yaw.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25,lVol. 1, London, 1926, pp. 346-359., diagr., tabls.

Irving, H. B., and A. S. Batson. Some experiments on a model of B. A. T. "Bantam" aeroplane with special reference to spinning accidents. Part 1.— Longitudinal control and rolling experiments.

Aeronautical Research Committee, Reports and Memoranda, No. 976 (Ae. 190), Nov., 1925, London, 1926, pp. 18, diagr.

--Some experiments on a slotted aerofoil.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 121-134, tabls., diagr.

--Summary of data on slotted wings obtained in the wind tunnel of Messrs.

Handley Page, Ltd.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 135-159, diagr.

Irwin. See McLaughlin, George P.: The Irwin meteorplane. Istituto di Aerodinamica del Politecnico di Aachen. See Gabbrielli, G.: Il canale del vento dell' Istituto di Aerodinamica del Politecnico di Aachen.

Italy. Annuario ufficiale della regia aeronautica, 1925.

Roma, Libreria dello Stato (stab, poligr. per l'Amministrazione dello Stato), 1925, pp. xxvi, 122, con una tavola.

- Annuario ufficiale della regia aeronautica, 1926.

Roma, Provveditorato gen..dello Stato, Libreria (stab, poligr. Amm. Stato), 1926, p. 153 con tavola.

- Growth of commercial aviation in Italy.

Aviation, Vol. 21, No. 13 (Sept. 27, 1926), New York, p. 542.

- Norme provvisorie per l'impiego dei reparti dirigibilisti. Parte I: Addestramento. Parte II: Criteri d'impiego. (Commissariato d' aeronautica; commando generale d' aeronautica).

Roma, Libr. dello Stato (stab, poligr. Amministrazione dello Stato), 1925, pp. 103; 31.

- Ordinamento degli uffici del Ministero dell' aeronautica. (Decreto del

Ministero dell' aeronautica in data 10 settembre 1925). '

Roma, Provveditorato generale dello stato, libreria, 1925, pp. 31.

—— Regies pour les aéronefs survolant l'Italie.

L'Aérophile, 34e année, Nos. 5-6 (ler-15 mars 1926), Paris, p. 88.

- The reorganization of the Italian Air Ministry.

Flight, Vol. 18, No. 1 (Jan. 7,1926), London, pp. 7-8, ill.

- See Allen, C. B.: Italy wins Schneider trophy race.

- See Baciocchi, Alighiero. : Italy's civil aviation.

- See Coppa d'Italia: The Coppa d'Italia. Italian light plane trophy

definitely won by Czechoslovakia.

- See Ernst: Coppa d'Italia 1926.

- See G., R.: La Regina Margherita e i primordi della nostra aeronautica.

- See Giannini, Amedeo: La legislazione aeronautica italiana. Vol. II a

cura di Amedeo Giannini. v

- See Nobile, Umberto: Sullo sviluppo delle costruzioni dei dirigibili in

Italia.

- See Nobile, Umberto: The trend of airship construction in Italy.

- See Pastore, G. R.: Aeronautica militare Italia. L'aviazione nella battaglia terrestre.

--See Savoja: Aeronautica militare. L'evoluzione dell' aviazione durante

la guerra.

Iuriepp, B. N. The theory of the induced drag of aerofoils.

Transactions of the Central Aero-Hydrodynamical Institute, No. 20, U. S. S. R. Scientific-Technical Department of the Supreme Council of National Economy, No. 127, Moscow, 1926, pp. 122, ill.

J

Jackson, Alan. Marking the airways.

Aviation, Vol. 21, No. 10 (Sept. 6, 1926), New York, p. 414, ill.

Jacobs, A. M. Cross-country by air.

St. Nicholas, Vol. 53 (Mar. 1926), New York, pp. 460-466, ill., map.

- Far higher than the eagle soars.

St. Nicholas, Vol. 53 (Jan. 1926), New York, pp. 234-240, ill.

- A new altitude airplane. The acute conditions of high altitude flying

involve special design problems.

Aviation, Vol. 20, No. 2 (Jan. 11, 1926), New York, pp. 52-53.

- Over the sea in planes.

St. Nicholas, Vol. 53 (July 1926), New York, pp. 852-856, ill.

- Steady, please, below.

St. Nicholas, Vol. 53 (Oct. 1926), New York, pp. 1152-1155, ill.

- Taking off into the dark.

St. Nicholas, Vol. 54 (Dec. 1926), New York, pp. 99-103, ill.

Jacobs, Eastman N. Effect of protruding gasoline tanks upon the characteristics of an airfoil.

National Advisory Committee for Aeronautics, Technical Notes No. 249, Oct. 29, 1926 (mimeographed), Washington, October 1926, pp. 2, diagrs.

Jacques, P. L'Allemagne organise son aviation militaire.

L'Aérophile, 34e année, Nos. 5-6 (ler-15 mars 1926), Paris, pp. 73-74.

- L'Amérique entreprend la signalisation de ses voies aériennes. La France,

de 1910 à 1914, l'avait réalisée.

L'Aérophile, 34e année, Nos. 9-10 (ler-15 mai 1926), Paris, pp. 132-133, ill.

- L'avion transatlantique du capitaine Fonck.

L'Aérophile, 34e année, Nos. 13-14 (ler-15 juil. 1926), Paris, pp. 215-216, ill.

- Comment le Lt. Thoret ravitailla l'observatoire Vallot.

L'Aérophile, 34e année, Nos. 23-24 (ler-15 déc. 1926), Paris, p. 360.

- Les deux voyages du lieutenant Thoret en avionnette 40 CV.

L'Aérophile, 34e année, Nos. 13-14 (ler-15 juil. 1926), Paris, pp. 211-212, port. Jacquet, Fernand. Propagande et Vulgarisation.

Ille Congrès International de la Navigation Aérienne, T. 3, Paris, [1925], pp. 167-177. Jahr, P. Die Anmeldung deutscher Patente. Anleitung und Ratschläge zur Selbstanmeldung von Erfindungen für Patentsucher, besonders der Kleinindustrie und des Kleingewerbes.

Berlin, Carl Heyman's Verlag, 1925, pp. 194, ill,

Jalbert, J. Two-stroke-cycle engines for airplanes.

National Advisory Committee for Aeronautics, Technical Memorandums No. 347, Jan. 29, 1926, (mimeographed), Washington, January 1920, pp. 23, ill. From L'Aéronautique, July and August 1925.

James, W. Frank. A five-year development program for the Air Corps at last.

tj. S. Air Services, Vol. 11, No. 7 (July 1926), Washington, D. C, pp. 11-14, 45-47, ill. Jancel, A. Considérations pratiques sur le graissage des moteurs d'avions commerciaux au moyen des huiles compoundées.

L'Aéronautique, 8me année, No. 87 (août 1926), Paris, pp. 275-277, diagrs.

Janes, Edward T., and others. Aircraft power plants. New York, Ronald Press Co., 1926, pp. 208, ill.

Jan-Kerguistel, Y. Le prochain concours allemand d'hydravions postaux. L'Aéronautique, 8me année, No. 83 (avril 1926), Paris, pp. 123-125.

Japan. Making airmen in the Orient.

Literary Digest, Vol. 90 (Sept. 11, 1926), New York, pp. 66-68.

Japan. The Wind Tunnel Committee of the Aeronautical Council of Japan. The resistance of the airship models measured in the wind tunnels of Japan.

Report of the Aeronautical Research Institute, Tokyo Imperial University Vol. 2,1, No. 15 (March 1926), Tokyo, pp. 84, ill., tahles, diagrs.

- See Blanchet, Georges: Le développement de l'aéronautique Japonaise.

- See Kano, Yosihiko, and Bunnosuke Yamaguti: On the contents of helium

and other constituents in the natural gases of Japan.

- See Kinnosuke, Adachi: Japan's civil aviation.

- See Young, Kennedy: Wings of the Rising Sun.

Jaumotte, J. Un cas de sursaturation de l'air atmosphérique constaté en avion.

me Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 168-175, ill., diagrs.

- Un météorographe pour sondage par avion.

Ille Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 125-146, ill.

- La photographie stéréoscopique des nuages en avion.

Ille Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 163-167.

- Les sondages aérologiques par avion et la théorie des cyclones de Bjerknès.

nie Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 147-156, diagrs.

Jencks, E. D. Municipal airport opened at Saint Paul.

American City, Vol. 35 (July 1926), New York, pp. 88-90. Jenkins, C. F. High-frequency fatigue tests.

Aeronautical Research Committee, Reports and Memoranda, No. 982 (M. 30), Oct., 1925, London, 1926, pp. 24, tabls.

- See Archbutt, S. L., and J. W. Jenkin: Mechanical properties of pure

magnesiun and certain magnesium alloys in the wrought condition.

Jennings, W. G. See Garner. H. M., and W. G. Jennings: The variation of

engine power with height. Jet propulsion. See Engines: Jet propulsion.

Joachim, William F. An investigation of the characteristics of steel diaphragms for automatic fuel-injection valves.

National Advisory Committee for Aeronautics, Technical Notes No. 234, April 27, 1926, (mimeographed), Washington, April 1926, pp. 23, ill. diagrs.

- An investigation of the coefficient of discharges of liquids through small

round orifices.

National Advisory Committee for Aeronanutics, Report No. 224, March 18,1926, Washington, Government Printing Office, 1926, pp. 10, ill., diagrs.

- Research on oil-injection engines for aircraft.

Mechanical Engineering, Vol. 48, No. 11 (Nov. 1926), New York, pp. 1123-1128, ill.

Joachim, William F., and Harold W. Case. Tests of several bearing materials lubricated by gasoline.

National Advisory Committee for Aeronautics, Technical Notes No. 241, July 16, 1926, (mimeographed), Washington, July 1926, pp. 19, ill.

Jobson, C. D. Ships that pass in the night.

U. S. Air Services, Vol. 11, No. 11 (Nov. 1926), Washington, D. C, pp. 25-27, ill.

Johansen, F. C. See Ower, E., and F. C. Johansen: The design of Pitot-static tubes.

- See Simmons, L. F. G., and F. C. Johansen: Experiments on transmission

of air waves through pipes.

Jones, B. Melvill. The control of stalled aeroplanes.

Journ. Roy. Aer. Soc, Vol. 30, No. 186 (June 1926), London, pp. 345-364, diagr.

Jones, B. Melvill, and A. Trevelyan. Step-by-step calculations upon the asymmetric movements of stalled aeroplanes.

Aeronautical Research Committee, Reports and Memoranda, No. 999 (As. 206), Oct., 1925, London, 1926, pp. 22, diagr.

Jones, C. S. 1925 activities of Curtiss Flying Service, Inc.

Aviation, Vol. 20, No. 15 (Apr. 12, 1926) New York, pp. 548-549, ill.

Jones, D. A., and H. L. Stevens. The R. A. E. control movement recorder, Mark III.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 270-272, ill., diagr.

Jones, Edward Tompkins, R. Insley, F. W. Caldwell, and R. F. Kohr. Aircraft power plants.

New York, 1926, Ronald Press Co., pp. 208, ill. Jones, Edward Tompkins, and L. E. Caygill. Full-scale and model measurements of lift and drag of Bristol Fighter with Handley Page slotted wings. Aeronautical Research Committee, Reports and Memoranda, No. 1097 (Ae. 213), Dec, 1925, London, 1926, pp. 9, tahls., diagr.

Jones, Edward Tompkins. See Garner, H. M., and E. T. Jones: Full scale tests of different ailerons on Bristol Fighter aeroplanes.

- See Power plants: Aircraft power plants Part I—Aircraft engines, by

Edward T. Jones, and Robert Inseley. Part II—Propellers, by Frank W. Caldwell. Part III—Water ballast recovery, by Robert F. Kohr.

Jones, Ernest. Flight in literature.

Washington, D. C, National Capital Press, 1925, pp. 22, ill.

Jones, F. Wood. Bird flight.

Transactions of the Royal Society of South Australia, Vol. 1, 1926. Reviewed in Nature, Vol. 119, No. 2983 (Jan. 1, 1927), London, pp. 31-32.

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

- See Reif, E. F., and L. J. Jones; Measurements of lift, drag, and pitching

moment on the l/5th scale model of the Bristol Fighter with airscrew running.

Jones, W. R. D. Notes on magnesium and its alloys.

Journ. Roy. Aer. Soc, Vol. 30, No. 192 (Dec. 1926), London, pp. 743-771.

Johnson, J. B. Relationship of metallurgy to the development of aircraft.

Transactions of the American Society Steel Treating, Vol. 9, No. 4 (April 1926), Cleveland, Ohio, pp. 517-538, ill.

Josserand, Louis. La loi du 31 mai 1924 relative à la navigation aérienne et le droit commun de la responsabilité.

Revua Juridique Internationale de la Locomotion Aérienne, avril-mai-juin 1926, Paris, pp. 137-143.

Joukowsky. See Toussaint, A., et E. Carafoili: Sur la théorie des ailes susten-tatrices.

Jugoslavia. Aeronautica militare. Jugoslavia. Propositi e bisogni. Rivista Aeronautica, Anno 2, N. 1 (gen. 1926), Roma, pp. 94-96.

Julliot, Ch. L. L'aviation sanitaire devant le Vile Congrès Juridique International de l'Aviation et la XHe Conférence Internationale de la Croix-Rouge.

L'Aérophile, 34e année, Nos. 3-4 (ler-15 fév. 1926), Paris, pp. 47-49, ports.

- René Quinton.

Paris, Per Orbem, 1926.

Junkers. All-metal Junkers airplane, Type F 13.

National Advisory Committee for Aeronautics, Aircraft Circular, No. 6, (mimeographed), Washington, May 1926, pp. 13, ill., tables. Translation from the German.

- La construction Junkers à l'étranger.

L'Aéronautique, 8me année, No. 89 (oct. 1920), Paris, pp. 329-332, ill.

Junkers. The Junkers W. 33 and W. 34.

The Aeroplane, Vol. 31, No. 3 (July 21, 1926), London, p. 106, ill,

- See Aéro-Lloyd-Junkers: La fusion Aéro Lloyd-Junkers.

- See Bouché, Henri: Une visite des ateliers Junkers.

- See Kirschke, Rudolf: Das Junkersprinzip.

- See Longolius: Junkers im seeflug-Wettbewerb.

Jurinek, Josef M. See Fisher von Portuzyn, and Josef M. Jurinek: Jahrbuch für Luftverkehr 1925.

K

K. 1. The "K. 1" monoplane. A commercial machine constructed in Soviet Russia.

Flight, Vol. 18, No. 8 (Feb. 25,1926), London, pp. 103-104, ill., diagr.

Kano, Yosihiko, and Bunnosuke Yamaguti. On the contents of helium and other constituents in the natural gases of Japan.

Report of the Aeronautical Research Institute, Tokyo Imperial University, Vol. 1, No. 13 (Febr. 1926), Tôkyô, pp. 347-350, ill., map.

Karachi. Airship shed at Karachi.

Engineering, Vol. 121, No. 3152 (June 11, 1926), London, p. 694.

Karman, Th. von. Uber die Grundlagen der Balkentheorie, von Th. von Karman; die Spannungen und Formänderungen von Balken mit rechteckigem Querschnitt, von Friedrich Seewald; Stegbeanspruchung hoher Biegungsträger, von Ilse Kober.

Herausgegeben von Abhandlungen aus dem Aerodynamischen Institut an der technischen Hochschule, Aachen. Heft 7. Berlin, Julius Springer, 1926, pp. 42.

Katzmayr, Richard. Prof. Richard Knoller.

Zeitschr. Flugt. Motorluitsch., 17. Jahrg., 7. Heft (14. April 1926)', München, pp. 147-149, port.

Kawada, Sandi. Theory of airscrews.

Report of the Aeronautical Research Institute, Tôkyô Imperial University, Vol. 1, No. 14 (March 1926), Tôkyô, pp. 361-404, ill., tables, diagrs.

Keesom, W. H. La courbe de fusion de l'hélium.

C. R. Acad. Sei., T. 183, No. 3 (19 juil. 1926), Paris, pp. 189-190.

- L'hélium solidifié.

C. R. Acad. Sei., T. 183, No. 1 (5 juü. 1926), Paris, pp. 26-27.

Kegel, Max. See Offermann, E.: Der Streckenflug von Kegel im diesjährigen Rhön-Segelfing-Wettbewerb.

Kehler. Helmholtz in seinem Urteil über Flugmaschinen und Luftschiffe. Luftweg, Jahrg. 1926, Heft 17 (10 Sept. 1926), Berlin-München, pp. 177-178.

Kehler, R. v. Helmholtz in seinem Urteil über Flugzeuge und Luftschiffe.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 19. Heft (14. Okt. 1926), München, pp. 407-409.

- Das Kortsche Luftschiff.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 24. Heft (28, Dez. 1926), München, pp. 527-529.

Kemp, R. C. See Surveying: The development of aerial surveying. Kemper, Carlton. Improving the performance of a compression ignition engine by directing flow of the inlet air.

National Advisory Committee for Aeronautics, Technical Notes No. 242, July 27, 1920 (mimeographed), Washington, July 1926, pp. 9, ill., diagr.

- »See Paton, C. R., and Karlton Kemper: Power output and air requirements of a two-stroke cycle engine for aeronautical use.

KÉRambrun, Paul. Une invention nouvelle, récemment appliquée à l'aviation, va rendre les avions silencieux.

L'Aérophile, 34o année, Nos. 11-12 (ler-15 juin 1926), Paris, p. 1S6.

Keulegan, Garbis Hovannes. See Tuckerman, Louis Bryant: A fabric tension meter for use on aircraft.

Khartoum-Kisumu. The Khartoum-Kisumu air line.

The Aeroplane, Vol. 31, No. 20 (Nov. 1", 1926), London, pp. 626-628. King, L. N. F. I. Graphical methods of plotting from air photographs.

London, H. M. Stationery Office.

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

and detonation. King's Cup. The 5th King's Cup race.

Flight, Vol. 18, No. 28 (July 15, 1926) London, pp. 425-134, ill.

- The King's Cup air race to be held on July 9 and 10, with start and finish

at Hendon.

Flight, Vol. 18, No. 27 (July S, 1926), London, pp. 414-419, ill., map.

- On the King's Cup Race.

The Aeroplane, Vol. 31, No. 2 (July 14, 1926), London, pp. 45-60, ill.

Kinnosuke, Adachi. Japan's civil aviation.

Aero Digest, Vol. 9, No. 5 (Nov., 1926), New York, pp. 352-353, 410-411, ill.

Kirkup, T. A. See Bateman, H., H. C. H. Townend, and T. A. Kirkup: Experiments with a family of airscrews, including effect of tractor and pusher bodies. Part IV. On the effect of placing an airscrew in various positions within the nose of a streamline body.

- 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).

Kirkwood, Harry. Reduce our air mail rates.

Aero Digest, Vol. 9, No. 2 (Aug. 1926), New York, pp. 104, 156.

Kirschke, Rudolf. Das Junkersprinzip.

Luftweg, Jahrg. 1926, Heft 18 (25. Sept. 1926), Berlin-München, pp. 189-190.

Kirsten-Boeing. See Sachse, H.: Kirsten-Boeing propeller. Kite balloons. See Sumner, P. H.: The science of flight and its practical application. Vol. 1: Airships and kite balloons.

Kites. A passenger-carrying kite.

Illustrated London News, Vol. 169, No. 4574 (Dec. 18, 1926), London, p. 1238, 111.

Kleffel, Walther. Ein Nachwort zum Tempelhofer Flugtag.

Luftweg, Jahrg. 1926, Heft 19 (10. Okt. 1926), Berlin-München, pp. 197-198.

Kleinschmidt, F. E. Arctic dangers.

Aero Digest, Vol. 8, No. 5 (May 1926), New York, pp. 263, 314-315, 318, ill.

Klemin, Alexander. Aviation and the university.

Scientific Monthly, Vol. 23 (Sept. 1926) Garrison, N. Y., pp. 284-287, ill.

- Experimental determination^of strength of metal wing.

Aviation, Vol. 21, No. 15 (Oct. 11, 1926), New. York, pp. 628-634, ill., diagr.

- Four-motored airplanes.

Scient. Amer., Vol. 134 (Mar. 1926), New York. p. 207, ill.

- Scientific American sport-plane trophy race at the Philadelphia air races.

Scient. Amer., Vol. 135 (Dec. 1926), New York, p. 423, ill.

Klemperer, W. Theorie des Segelfluges.

Abhandlungen aus dem Aerodynamischen Institut Aachen, Heft 5, 1926. Knight, Montgomery. Wind tunnel standardization disk drag.

National Advisory Committee for Aeronautics, Technical Notes No. 253, Dec. 24, 1926 (mimeographed), Washington.JDeeember 1926, pp. 6, ill.

Knoller, Richard. See Katzmayr, Richard: Prof. Richard Knoller.

Knott, H. See Raethjen, P., und H. Knott: Flugeigenschaftsbestimmung

durch kinematographische Plugvermessung. KÖBEE, Ilse. See Kârmân, Th. von: Über die Grundlagen der Balkentheorie,

von Th. von Kârmân, die Spannungen und Formänderungen von Balken

mit rechteckigem Querschnitt, von Friedrich Seewald; Stegbeanspruchung

hoher Biegungsträger, von Ilse Kober. Koch, J. J. See Biezeno, C. B., J. J. Koch und C. Koning: Ueber die Berechnung

vom freitragenden Flugzeugflügeln.

Köhler, Raimund. Leipzig und Halle im Luftverkehr.

Luftweg, Jahrg. 1926, Heft 20 (25. Okt. 1926), Berlin-München, pp. 209-210.

Koppen, J. V., und W. Hübner. Beschleunigungs-Messungen an Flugzeugen.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 24. Heft (28. Dez. 1926), München, pp. 534-537, ill

Kohr, Robert Franz. See Jones, E. T., R. Insley, F. W. Caldwell, and R. F. Kohr: Aircraft power plants.

- See Power plants: Aircraft power plants. Part I—Aircraft engines, by

Edward T. Jones, and Robert Insley. Part II—Propellers, by Frank W. Caldwell. Part III—Water ballast recovery, by Robert F. Kohr.

Koning, C. See Biezeno, C. B., J. J. Koch und C. Koning: Ueber die Berechnung vom freitragenden Flugzeugflügeln.

- See Wolff, E. B., et C. Koning: Essais tendant à déterminer l'influence

d'un cylindre rotatif, adapté à un profil d'aile.

- See Wolff, E. B., and C. Koning: Tests for determining the effect of a

rotating cylinder fitted into the leading edge of an airplane wing.

Koolhoven, Frederick. Les avions Frederick Koolhoven.

L'Aérophile, 34e année, Nos. 23-24 (ler-15 dec. 1926), Paris, p. 370, ill.

Koolhoven plane. The Koolhoven F. K. 32 school plane with rotary engine. A Dutch training plane.

Aviation, Vol. 20, No. 13 (Mar. 29, 1926), New York, pp. 451-452, ill.

Koppe, Heinrich. Flight tests on airplanes.

National Advisory Committee for Aeronautics, Technical Memorandums No. 359, April. 22, 1926, (mimeographed), Washington, April 1926, pp. 31, ill.

From "Berichte und Ahhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt," July 1925.

Koppenfels, Hansheinrich, Luftverkehr und internationaler Geldwert. Luftweg, Jahrg. 1926, Heft 22 (25. Nov. 1926), Berlin-München, pp. 226-227.

Kort, L. Ein neues Luftschiff.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 16. Heft (28 Aug. 1926), München, pp. 336-338, ill.

Korvin-Krotjkovsky, B. V. On the control of airplanes at low speeds.

Aviation, Vol. 20, No. 25 (June 21, 1926), New York, pp. 946-947, diagr.

Kouzmin, G. I. See Gorjainoff, A. A., and G. I. Kouzmin, edited by V. L. Alexandroff and V. P. Vetchinkin: Standard specification for statik tests of airplanes.

Kraepelin. See Brabant, V. G.: Épreuve d'attention et aptitude au pilotage. Test de Kraepelin appliqué aux navigateurs aériens.

Krahe, Fritz. Die Entwicklung des Luftschiffahrtrechtes. Doktor-Dissertation, 1926.

Kreider-Reisner. Kreider-Reisner " Midget."

Aero Digest, Vol. 9, No. 5 (Nov. 1926), New York, p. 362, ill.

Krupp, G. Die ersten Zeitungs-Flugzeuge.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 7. Heft (14. April 1926), München, p. 149.

- Ein Unfall Espenlaubs!

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 7. Heft (14. April 1926), München, pp. 149-150, ill.

- Die WGL-Ausstellung in Düsseldorf 1926.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 3. Heft (13. Feb. 1926), München, pp. 49-50.

L

L., M. Le concours d'avions économiques.

L'Aérophfle, 34e année, Nos. 15-16 (ler-15 août 1926), Paris, pp. 235-239, ill.

- Nouvelle liste des records du monde.

L'Aérophile, 34e année, Nos. 15-16 (ler-15 août 1926), Paris, pp. 249-251, ill.

- Raids, records et performances.

L'Aérophile, 34e année, Nos. 3-24 (1er fév-16 déc. 1926), Paris, pp. 43-16, 67-68, 116-117. 138, 169-172, 247-248, 263-269, 299-300, 334-335, 364-366, M.

- Les récents concours d'hydravions de transport en France et en Allemagne.

L'Aérophile, 34e année, Nos. 15-16 (ler-15 août 1926), Paris, pp. 227-231, ill.

Laass, Jack. The practical lightplane.

Aviation, Vol. 21, No. 19 (Nov. 8, 1926), New York, p. 806, ill. Laboratories. See Prandtl, Ludwig: First experiences with the rotating laboratory.

Labussière, G. Matériels nouveaux de photographie aérienne.

L'Aéronautique, 8me année, No. 84 (mai 1926), Paris, pp. 164-168, ill.

Lachmann, G. Albatros-Verkehrs- und Lasten-Flugzeug L 72a.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 10. Heft (28. Mai 1926), München, pp. 199-207, ill.

- Development of light and small airplanes.

National Advisory Committee for Aeronautics, Technical Memorandums No. 370, July 17, 1926 (mimeographed), Washington, July 1926, pp. 44, ill., diagr.

Prom "Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt," July 1925.

Lacoin, M. Cours de moteurs à combustion interne. Livre 1: Puissance fournie par le combustible.

Paris, Léon Eyrolles, 1926, pp. 338. Sixième édition.

Laine, André. L'aviation pour tous. Préface de M. Paul Painlevé. Paris, Librairie Delagrave, pp. 130, ill.

Laird. The Laird commercial.

Aviation, Vol. 21, No. 4 (July 26, 1926), New York, pp. 125-126, ill.

Lamb, H. On the drag of an aerofoil for two dimensional flow.

Proceedings of the Royal Society, Vol. 3, No. A759 (July 2,1926), London, pp. 592-603, ill.

- On the effect of the walls of an experimental tank on the resistance of a

model.

Aeronautical Research Committee, Reports and Memoranda, No. 1010 (Ae. 216), Jan., 1926, London, 1926, pp. 6, diagr.

Lamberty, J. C. Aviachim-Flüge.

Luftweg, Jahrg. 1926, Heft 19 (10. Okt. 1926), Berlin-München, pp. 200-201.

Lamé. Calcul et dimensionnement des sustentateurs d'hélicoptère.

JJIe Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 267-278, ill.

Lamé, Maurice Luc Valère. Note sur les hélices aériennes en translation oblique.

L'Aérophile, 34e année, Nos. 13-14 (ler-15 juil. 1926), Paris, pp. 205-206, il],

- La protection contre l'incendie à bord des avions.

L'Aéronautique, 8me année, No. 82 (mars 1926), Paris, pp. 91-93, ill.

- Le vol vertical et la sustentation indépendante; hélicoptères, gyroptères,

avions hélicoptères.

Paris, Libr. delà Vie Technique et Industrielle, 1926, p. 170.

Lampert, Florian H. Congress studies the air.

Aero Digest, Vol. 8, No. 3 (Mar. 1926), New York, p. 119.

- See United States Congress. House: Report. Inquiry into operations of

the United States air services.

Lampltjgh, A. G. Some aspects of commercial aviation insurance.

Hie Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 8-17.

Lancashire. The Lancashire air pageant meeting at Woodford an unqualified success.

Flight, Vol. 18, No. 39 (Sept. 30,1926), London, pp. 631-636, 642, ill.

Lanchester, F. W. Sustentation in flight.

Journ. Roy. Aer. Soc., Vol. 30, No. 190 (Oct. 1926), London, pp. 589-606, ill.

Landing. Parachute carries airplane to earth.

Scient. Amer., Vol. 135 (Nov. 1926), New York, p. 329, ill.

- Plane is safely landed by giant parachute.

Pop. Mech., Vol. 46 (Nov. 1926), Chicago, pp. 705-707, ill.

- See Brainerd, H. B.: Aeroplane landing in a metropolis.

- See 'Cooch, H. : Landing aircraft in fog.

- See Pond, Charles McH. : The location of terminal landing fields.

- See Tauber, Ernst: Freies Landungsrecht?

Landing fields. See Galuert, H.: On the necessary size of aerodromes in order that a landing may be made if the engine fails when getting off.

Landing gear. See Airplanes: An interesting undercarriage "leg." New features of Beardmore chassis.

Landis, Reed G. A national aviation program.

u. S. Air Services, Vol. 11, No. 4 (Apr. 1926), Washington, D. C, pp. 18-20.

Landrien, Félix. Les assurances aériennes. Note au sujet des projets présentés et résolutions votées au Vile Congrès du Comité Juridique International à Lyon, en septembre 1925.

Hle Congrès International de la Navigation Aériene, T. 1, Paris, [1925], pp. 18-19.

- Réglementation douanière internationale. Note au sujet des décisions

prises par le 7e Congrès du Comité Juridique International à Lyon en septembre 1925.

Hle Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 31-32.

Langlet, Samuel Pierpont. See Walcott, Charles Doolittle: Samuel Pierpont

Langley and modem aviation. Langlet Field. See United States Air service tactical school, Langley Field,

Va.: Bombardment.

- See United States Air Service tactical school, Langley Field, Va.: Pursuit.

Langman, H. R. The magneto manual.

London, Croshy Lockwood and Son, 1927, pp. x, 221. Lockwood's Manuals.

Langsdorfp, Werner v. Erfahrungen auf einem Streckenflug mit einem schwachmotorigen Zweisitzer.

Zeitschr. Flugt. Motorlultsch., 17. Jahrg., 8. Heft (28. April 1926), München, pp. 161-102.

- Fortschritte der Luftfahrt-Jahrbuch 1926.

Frankfurt am Main, H. Bechhold, 1926, pp. 411, ill.

- Der 19-PS-Flug über die Alpen.

Frankfurt a. M., H. Bechhold, 1926, pp. 118, ill.

- Taschenbuch der Luftflotten, V. Jahrgang 1926.

München, J. F. Lehmanns Verlag, 1926, pp. 370, ill.

- Versuche mit schwachmotorigen Wasserflugzeugen.

Zeitschr. Flugt. Motorluftsch,, 17. Jahrg., 16. Heft (28. Aug. 1926), München, pp. 335-336, ill.

Lannot, A. Fauconnier de. Sur l'éclairage nocturne dans la navigation aérienne.

Hle Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 367-399, ill.

Lansdowne, Mrs. Z. Daughter of the stars.

Collier's, Vol. 77 (Jan. 9-16, 1926), Springfield, Ohio, pp. 5-6, 9-10.

Laiumore, Bettie. The sky of Europe is alive with planes. Of all civil aviation companies abroad, German Aero-Lloyd appears to be the largest and most successful.

U. S. Air Services, Vol. 11, No. 1 (Jan. 1926), Washington, D. C, pp. 20-25, ill.

La Roe, Arthur. The flight surgeon.

Aero Digest, Vol. 8, No. 3 (Mar. 1926), New York, pp. 126-127, ill.

Latapie, Roger. See Blanchet, Georges: Aviateurs contemporains. Pierre Weiss, Roger Latapie.

Latecoere bomber. The Latecoere multi-engine bomber.

Aviation, Vol. 20, No. 6 (Feb. 8, 1926), New York, p. 184, diagr.

Lateral control. The lateral control of stalled aeroplanes.

Engineering, Vol. 121, No. 3140 (March 5, 1926), London, p. 311.

Launching. Launching airplanes with catapults.

Aviation, Vol. 20, No. 13 (Mar. 29, 1926), New York, pp. 456-457, ill.

- See R 33: The first airship to carry two planes : The " R 33 " launching test.

- See Talenti, Cesare: Osservazioni sanitarie su alcuni piloti durante i

lanci di velivoli a mezzo di catapulta.

Laurent's flying ship. The quaintest machine ever invented. Aero Field, Vol. 1, No. 1 (Apr. 1926), London, p. 11.

Lautal. A new light alloy.

The Aeroplane, Vol. 31, No. 5 (Aug. 4, 1926), London, p. 158.

Lavender, T. A continuous rotation balance for the measurement of pitching and yawing moments due to angular velocity of roll (M, and ND).

Aeronautics, Tech. Eept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 273-275, ill., diagr.

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

rotating cylinder in the water channel.

Lavoisier. Extraits des mémoires de Lavoisier concernant la météolologie et l'aéronautique. Extraits publiés par les soins de l'Office National Météorologique de France.

Paris, Etienne Chiron, éditeur [1926], pp. 229, port.

Law, F. H. Wilbur and Orville Wright, inventors of the airplane. St. Nicholas, Vol. 53 (June 1926), New York, pp. 793-796, ill.

Lawrance, Charles L. Modern American aircraft engine development.

Aviation, Vol. 20, Nos. 11-12 (Mar. 15-22, 1926), New York, pp. 364-367, 411-115, ill. Journ. Roy. Aer. Soc, Vol. 30, No. 187 (July 1926), London, pp. 405-133, ill.

Laws, F. C. V. The application of air photography to survej-ing.

Hie Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 271-290, ill.

Laws and regulations. The amendment to the regulations for private flying. The Aeroplane, Vol. 30, No. 6 (Feb. 10, 1926), London, p. 152.

- Civil air navigators: Regulations for the issue of licenses.

Flight, Vol. 18, No. 52 (Dec. 30, 1926), London, pp. 864-865).

- The Merritt Bill amends the Bingham Bill.

Aviation, Vol. 20, No. 12 (Mar. 22, 1926), New York, pp. 404-400.

- Our new aeronautic safety code.

Scient. Amer., Vol. 134 (Apr. 1926), New York, pp. 269-270, ill.

- Private flying.

The Aeroplane, Vol. 30, No. 13 (Mar. 31, 1926), London, p. 34*6.

- Private flying regulations.

Flight, Vol. is, No. 13 (Apr. 1, 1926), London, p. 190.

- The proposed air regulations.

Aviation, Vol. 21, No. 13 (Sept. 27, 1926), New York, pp. s4s-55s.

- Regulations for citizen air forces.

Flight, Vol. 18, No. 5 (Feb. 4, 1926), London, pp. 04-65.

Laws and regulations. See Bourquin, Maurice: L'organisation internationale des voies de communication.

- See Colby, Elbridge: Aerial law and war targets.

- See Connecticut: Motor vehicle and aircraft laws; revised to July 1, 1926.

- See Davis, Warren Jefferson : Putting laws over wings.

- See Giannini, Amedeo: Convenzione di Parigi per il regolamento della

navigazione aerea, a cura di Amedeo Giannini.

- See Greer, Rowan Allen : International aerial regulations.

- See Henry-Coiiannier, André: Légitimité de la guerre aérienne. Opinions

recueillies.

- See Italy: Règles pour les aéronefs survolant l'Italie.

- See Josserand, Louis: La loi du 31 mai 1924 relative à la navigation

aérienne et le droit commun de la responsabilité.

- See Lulcy: Die Einwirkungen des Luftverkehrsgesetzes auf das Eigentum

und der Ausgleich.

- See Mori, Vittorio: L'aeronautica nella legge italiana e nella convenzione

internazionale.

- See Royse, M. W. : Air law for America.

- See Tauber, Ernst: Freies Landingsrecht?

- See United States. Department of Commerce: Air commerce regulations. Effective December 31, 1926.

Lea, Clarence F. See United States Congress. House: Inquiry into operations of the United States air services. Hearing before the Select Committee of inquiry into operations of the United States air services, House of Representatives, Sixty-eighth Congress, on matters relating to the operations of the United States air services. Lea, F. C, and H. P. Btjdgen. The failure of a nickel chrome steel under repeated stresses of various ranges.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1936, pp. 508-511, tabls., diagr.

Le Botjrget. See Wronsky, Heinz: Einiges über den Flughafen Le Bourget. Lecointe, Sadi. See Sadi-Lecointe.

Lepranc, Jean-Abel. Moteurs d'avions à refroidissement par air ou par eau.

La Nature, 54e année, No. 2716, 2727 (24 avril, 10 juil. 1926), Paris, pp. 262-269, 20-24, ill.

Lehmann, E. A. The military value of airships.

Aero Digest, Vol. 8, Nos. 4,5 (May, Apr., 1926), New York, pp. 191, 235-237,261-262,312-313, ill.

--The safety of the Zeppelin airship. A survey of the possible dangers and

risks that might be encountered by airship of the Zeppelin type, and means of overcoming or avoiding them—data on the careers of the 115 airships constructed by the German Zeppelin Company.

Mechanical Engineering, Vol. 48, No. 2 (Feh. 1926), New York, pp. 115-118.

Lehr, G. Etudes de moteurs spéciaux aux Etats-Unis.

L'Aérotechnique (L'Aéronautique, 8me année, No. 84), 4me année, No. 41 (mai, 1926), Paris, pp. 172-173,111.

- Les moteurs d'aviation aux Etats-Unis.

L'Aérotechnique (L'Aéronautique, 8me année, No. 82), 4e année No. 39 (mars 1926), Paris, pp. 97-108, m.

Leipzig. See Köhler, Raimund: Leipzig und Halle im Luftverkehr.

Leo. Der Flughafen in Hamburg-Fuhlsbüttel.

Zeitsehr. Ver. deutseh. Ing., Bd. 70, Nr. 46 (13 Nov.. 1926), Berlin, pp. 1557-1559, ill.

Lb Page, W. Laurance. The advent of the radial air-oooled engine. Aviation, Vol. 20, No. 8 (Feb. 22,1926), New York, pp. 257-259.

Lepère, G. Les accidents dus à la perte de vitesse. Rapport de M. Lepore à la suite d'une communication de M. Coustantin.

L'Aérophile, 34e année, Nos. 21-22 (ler-15 nov. 1926), Paris, pp. 332-335.

Le Roy, Tillet, Brisson, Cadet, Lavoisier, Bossdt. Rapport fait'à l'Académie des Sciences sur la machine aérostatique de MM. de Montgolfier.

Extraits des Mémoires de Lavoisier concernant la Météorologie et l'Aéronautique, Paris, Etienne Chiron, éditeur [1926], pp. 93-121.

L'Escaille, M. H. de. Les registres de classification^de la navigation aérienne, lue Congrès International de la Navigation Aériene, T. 1, Paris, [1925], pp. 250-254.

- Les routes aériennes.

Ille Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 225-233.

Lesley, Everett Parker. Report on tests of metal model propellers in combination with a model VE-7 airplane.

National Advisory Committee for Aeronautics, Technical Notes No. 245, Aug. 31, 1926 (mimeographed), Washington, August 1926, pp. 21, ill., diagrs., tables.

-- Test of a model propeller with symmetrica] blade sections.

National Advisory Committee for Aeronautics, Technical Notes No. 246, Sept. 25, 1926 (mimeographed), Washington, September 1926, pp. 11, ill., diagrs.

- See Durand, William Frederick, and E. P. Lesley; Comparison of tests

on air propellers in flight with wind tunnel model tests on similar forms.

Letang, M. La construction métallique en aéronautique.

Hie Congrès International delà Navigation Aérienne, T. 3, Paris, [1925], pp. 19-38, ills., diagrs.

Levi-Cases, A. Motori ad olio pesante ed applicazioni aeronautiche. Rivista Aeronautica, Anno 2, N. 11 (Nov. 1926), Roma, pp. 41-67.

Lexington. See Walker, J. B.: Giant floating aircraft bases: Saratoga and

Lexington. Leyat, Marcel. L'aéropropulsion.

L'Aérophile, 34e année, Nos. 17-18 (ler-15 sept. 1926), Paris, pp. 279-281, diagrs.

Liberty engine. An air-cooled Liberty engine.

Flight, Vol. 18, No. 3 (Jan. 21, 1926), London, p. 37, HI.

Licochine et Gtjimmelfarb. Calculs aérodynamiques des performances d'un avion (en russe).

Leningrad, Édition de l'Institut Polytechnique.

Liebers. Ermittlung von Auftriebinvarianten vorgebener Profile.

Zeitschr. Ver. deutsch. Ing., Bd. 70, Nr. 8 (20. Feb. 1926), Berlin, p. 272.

Life-saving. A life-saving demonstration.

Flight, Vol. 18, No. 22 (June 3,1926), London, pp. 321-322, ill.

Light airplanes. See Lachmann, G. : Development of light and small airplanes.

Lighting. Luftfeuer für den Nacht-Flug-Verkehr.

Luftweg, Jahrg. 1926, Heft 10 (25 Mai 1926), Berlin-München, pp. 102-105, ill.

- See Airways: Airway lighting units ordered by Commerce Department.

- See Biddlecombe, C. H.: The lighting of obstructions dangerous to aerial

navigation.

- See Biddlecombe, C. H.: The lighting of the London continental airway.

- See Bruner, D. L., A. C, and W. T. Harding: Comparative flood-light

test.

- See Harding, W. T.: Twenty-four inch revolving incandescent beacon.

Air Corps type B-3.

-- See Lannoy, A. Fauconnier de: Sur l'éclairage uocturne dans la navigation

aérienne.

Lighting. See Ritchie, H. C: Aviation lighting. A general discussion of the air mail lighting system now in use for night flying.

- See Whitlock, J. E. : Lighting for night flying.

Ligue Internationale des Aviateurs. La ligue Internationale des aviateurs.

L'Aéropbile, 34e année, Nos. 9-10 (ler-15 mai 1926), Paris, p. 142.

Lilienthal, Otto. See Schütte, Johann: Zum 10. August 1926.

Linde. Die Wirtschaftlichkeit kleiner Flughäfen.

Verkehrsteebn. Woche, Bd. 20, 1926, pp. 136-137.

Lindemann, F. A. Meteors and the constitution of the upper air.

Nature, Vol. 118, No. 2962 (Aug. 7,1926), London, pp. 195-198, ill.

Lindholm, F. La précision de la mesure des records d'altitude.

L'Aéronautique, 8me anée, No. 81 (fêv. 1926), Paris, pp. 75-78, diagr. Lioré-Olivier. See Serryer, J. : Lioré-Olivier airplane. (Type 12 night-bomber

or type 20 commercial.) Liot, Vincenzo. L'aviazione ed i suoi riflessi politici ed internazionali (Associazione italiana di aerotécnica, sezione di Napoli). Napoli, tip. Esperia, [1926], pp. 50 con ritratto. Quaderni aeronautici, vol. 6.

Lippisch, A. Modellversuche mit neuartigen Flugzeugtypen.

Zeitschr, Flugt. Motorluftsch., 17. Jahrg., 24. Heft (28. Dez. 1926), München, pp. 549-554, ill.

L'IsLE, Rollet de. Nomination d'une commission internationale pour l'emploi de V "Esperanto" dans la navigation aérienne.

nie Congrès International delà Navigation Aérienne, T. 2, Paris, [1925], pp. 122-124.

Lissenko, I. Detonation tests of a Napier Lion V airplane engine made.

Transactions of the Central Aero-Hydrodynamieal Institute, No. 24, U. S. S. R. Scientific, Technical Department of the Supreme Council of National Economy, No. 148, Moscow, 1926 pp. 22, diagrs.

Litchfield, P. W. Case for the super-dirigible; proposed new airship.

World's Work, Vol. 51 (Jan. 1926), Garden City, N. Y., pp. 248-262, ill.

Little Rock. The Little Rock air meet.

Aviation, Vol. 20, No. 16 (Apr. 19, 1926), New York, p. 598. ill.

Lizette sport plane. The Lizette sport plane.

Aviation, Vol. 21, No. 22 (Nov. 29, 1926), New York, pp. 918, 920, ill.

Llave, Joaquín de la. El " Raid " aéreo a la Argentina.

Ibérica, Año 12, Núm. 617 (27 feb. 1926), Barcelona, pp. 129, 136-139, ill.

Lock, C. N. H., H. Bateman, and H. C. H. Townend. The airflow round a body as affecting airscrew performance.

. Aeronautics, Tech. Rept. Aeronautical Research Committee, 1921-25, Vol. 2, London, 1926, pp. 400-421, tabls., diagr.

Lock, C. N. H., and H. Bateman. The effect of gap between an airscrew and a tractor body.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 373-374, tabls., diagr.

- The effect of wind tunnel iuterference on a combination of airscrew and

tractor body.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 367-372, ill., tabls., diagr.

Lock, C. N.,H., H. Bateman and H. C. H. Townend. Experiments to verify the independence of the elements of an airscrew blade.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 381-384, tabls., diagr. '

■- An extension of the vortex theory of airscrews with applications to airscrews of small pitch, including experimental results.

Aeronautical Research Committee, Reports aud Memoranda, No. 1014 (Ae. 217), June, 1926, London, 1926, pp. 40, tabls., diagr.

Lock, C. N. H., and H. C. H. Townend. Lift and drag of two aerofoils measured over 360° range of incidence.

Aeronautics, Tech. Eept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 160-164, tahls., diagr.

Lock, C. N. H. and H. Bateman. The measurement of airflow round an airscrew Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 385-399, tahls., diagr.

Lock, C. N. H. On the system of vortices generated by a circular cylinder in steady motion through a fluid.

Aeronautical Research Committee, Reports and Memoranda, No. 9S6 (Ae. 19S), Nov., 1925, London, 1926, p. 6, diagr.

Lock, C. N. H., and H. C. H. Townend. Photographs of the flow around a model screw working in water, especially in the "Vortex ring state."

Aeronautical Research Committee, Reports and Memoranda, No. 1043 (Ae. 230), May 1926, London, 1926, pp. 5, ill.

Lock, C. N. H. See Glatjeht, H., and C. N. H. Lock: The accuracy of the vortex theory of airscrews in the light of recent experimental work and its application to airscrew design.

—— See Glauert, H., and C. N. H. Lock: On the advantages of an open jet type of wind tunnel for airscrew tests.

LoNnoN. The air port of London to be made the finest in the world.

Illustrated London News, Vol. 167, No. 4513 (Oct. 17, 1925), London, pp. 740-711, ill.

London-Australia-London. The London-Australia-London flight. Aviation, Vol. 21, No. 3 (July 19, 1926) New York, p. 97, ill., map.

London-Capetown-London. London-Capetown-London by air.

Aviation, Vol. 20, No. 16 (Apr. 19,1926), New York, p. 602, ill., map.

Longolius. Junkers im Seeflug-Wettbewerb.

Zeitschr. Flugt. Motorluftschr., 17. Jahrg., 20. Heft (28. Okt. 1926), München, pp. 443-444, tatal.

Longoni, Attilio. La ricognizione aviatoria Europea dell' editoriale Italiana aerea. Deduzioni e conclusioni dagli insegnamenti di un mese di esperienza diretta.

LVAla d'ltalia, Anno 5, N. 11 (Nov. 1926), Milano, pp. 457-459. López, S. See Bock, S.: El motor Diesel en su funcionamiento terrestre y marítimo. Traducción de S. López.

Lorraine-Diétrich. Le moteur Lorraine-Diétrich 450 cv., 12 cylinders en W. L'Aérophüe, 34e année, Nos. 17-18 (ler-15 sept. 1926), París, p. 272.

Lubrication. See Heinlein, Fritz: Experimental investigation of the physical properties of medium and heavy oils, their vaporization and use in explosion engines.

- See Jancel, A.: Considerations pratiques sur le graissage des moteurs

d'avions commerciaux au moyen des huiles coinpouudées.

Lühe. Höhenmeldungen von den Ozeanen zur Unterstützung der Luftschiffahrt.

Luftweg, Jahr. 1926, No. 3 (10. Feh. 1926), Berlin-München, p. 23. Luft Hansa. See Bouché, Henri: La Luft Hansa et ses lignes.

•- See Wiener: Was wird aus der "Deutschen Luft-Hansa."

Lugs. See Hollyhock, W. S.: Lug design. Luigi, Biondi. L'odografo Biondi-Pezzani.

Revista Aeronáutica, Anno 2, N. 2 (feh. 1926), Roma, pp. 55-60. Lukowitz, J. J. Toy airplane.

Industrial Arts Magazine, Vol. 15 (May 1920), Chicago, pp. 181-182, ill., plan. Lulct. Die Einwirkungen des Luftverkehrsgesetzes auf das Eigentum und der Ausgleich.

Das Luftweg, Jahrg. 1920, No. 2 (25. Jan. 1926), Berlin-München, pp. 12-15.

Lympne. The aircraft at Lympne.

The Aeroplane, Vol. 31, No. 10 (Sept. 8, 1926), London, pp. 307-320, ill., diagr.

- British light plane development and Lympne meeting.

Plight, Vol. 18, Nos. 36-37 (Sept. 9-46, 1926), London, pp. 565-584, 592, 603, ill.

- British light plane meet.

Aero Digest, Vol. 9, No. 5 (Nov. 1926), New York, pp. 364, 411, ill.

- Competition arguments at Lympne.

The Aeroplane, Vol. 31, No. 12 (Sept. 22, 1926), London, pp. 380-396, ill.

- Lympne competition 1926.

Plight, Vol. 18, No. 38 (Sept. 23, 1926), London, pp. 612-625, ill.

- On the Lympne competitions.

The Aeroplane, Vol. 31, No. 10 (Sept. 8, 1926), London, pp. 289-290.

Lympne Competition. The British lightplane competition.

Aviation, Vol. 21, No. 18 (Nov. 1, 1926), New York, pp. 742-754, ill.

Lyons, P. M. Wind tunnel test for elevator hinge moment coefficients on the horizontal tail surface No. 5 with balanced elevator.

Air Corps Information Circulalor, Vol. 6, No. 567 (Sept. 1, 1926), Washington, Government Printing Office, 1926, pp. 3, ill., diagr.

M

M., C. R. Le XXXe Congrès de l'Association Technique Maritime et Aéronautique (Paris, ler-5 juin 1926).

La Technique Moderne, T. 18, No. 14 (15 jail. 1926), Paris, pp. 433-437, ill.

M., J. Amundsen au Pôle Nord.

L'Aérophile, 34a année, Nos. 9-10 (lôr-15 mai 1926), Paris, p. 131, map.

Maas, H. J. van dep. See Van Heyst, F. A., et H. J. van der Maas: Essais d'un frein aérodynamique réduisant la longueur de roulement d'atterrissage.

McAdie, Alexander. The flier's aspect of aerography. Dispelling the clouds. Aviation, Vol. 21, No. 23 (Dec. 6, 1926), New York, pp. 954-955.

- The fliers' aspects of aerography. The structure of the air.

Aviation, Vol. 21, No. 17 (Oct. 25, 1926), New York, pp. 702.

- The fliers' aspects of aerography. The water vapor in free air.

Aviation, Vol. 21, No. 20 (Nov. 15, 1926), New York, pp. 841-842.

McCakroll, H. G. The second commercial airplane reliability tour. U. S. Air Services, Vol. 6, No. 7 (July 1926), Washington, D. C, pp. 38-39.

MacClain, A. L. Mountain photography made easy by airplane. Photo-Era, Vol. 57 (Aug. 1926), Wolfehoro, N. H., pp. 62-67, ill.

McConnell, B. M. Big business in the air.

Independent, Vol. 116 (June 5, 1926), Boston, pp. 651-653, ill.

- Glidden tour on wings; second annual commercial airplane reliability tour.

Independent, Vol. 117 (Aug. 28, 1926), Boston, pp. 235-236, ill.

McCook Field. See Barksdale, E. H.: Flugversuche in McCook Field.

- See Curry, John F.: McCook Field review. Many interesting designs

and new equipment developed at McCook Field duriug the past year.

McDarment, C. There is the North Pole!

Pop. Mech., Vol. 46 (Aug. 1926), Chicago, pp. 177-180, ill., map.

- Why men go up in balloons.

Saturday Evening Post, Vol. 199 (July 17, 1926), Philadelphia, pp. 20-21, ill.

- Wings of empire.

Independent, Vol. 116 (Jan. 2-16, 1926), Boston, pp. 8-10, 38-40, 66-68, map.

MacDill, Leslie, and Ralph S. Barnaby. Army-Navy standards. Aviation, Vol. 20, No. 20 (May 17, 1926), New York, p. 752.

Mackaye, B. New northwest passage.

Nation, Vol. 122 (June 2, 1926), New York, pp. 603-604, map.

McLaughlin, George F. The all-metal Sikorsky.

Aero Digest, Vol. 8, No. 6 (June 1926), New York, pp. 331, 394, ill.

- American commercial airplanes.

Aero Digest, Vol. 9, No. 2 (Aug. 1926), New York, pp. 90-94. ill.

- Czecho-Slovakian planes.

Aero Digest, Vol. 8, No. 3 (Mar. 1926), New York, p. 136, ill.

- The Fairchild monoplane.

Aero Digest, Vol. 9, No. 1 (July 1926), New York, p. 16, ill.

- Handley Page air liner.

Aero Digest, Vol. 8, No. 1 (Jan. 1926), New York, p. 15, ill.

- The Irwin meteorplane.

Aero Digest, Vol. 9, No. 6 (Dec. 1926), New York, p. 438, ill.

- Light airplanes.

Aero Digest, Vol. 8, No. 4 (Apr. 1926), New York, p. 198.

McLennan, J. C. Helium in Canada.

Nature, Vol. 117, No. 2, 933 (Jan. 16', 1926), London, p. 93.

MacMillan. See Baschin, Otto: Die Leistungen der amerikanischen Kreigs-flugzeuge bei der "MacMillan Arctic-Expedition."

Macready, James A. Making commercial night flying safe.

TJ. S. Air Services, Vol. 11, No. 12 (Dec. 1926), Washington, D. C, pp. 13-16, ill.

Macready, John A. Eight miles straight up!

Pop. Mech., Vol. 45 (Juna 1926), Chicago, pp. 887-890, ill.

- Exploring the earth's stratosphere.

Nat. Qeogr. Mag., Vol. 50, No. 6 (Dec. 1926), Washington, D. C, pp. 754-776, ill.

- A fine American altitude flight.

Flight, Vol. 18, No. 6 (Feb. 4, 1926), London, pp. 68-69, ill. Flight of Macready reaching nearly 36,000 feet.

- Macready flies up 37,579 feet.

Aero Digest, Vol. 8, No. 4 (Apr. 1926), New York, p. 216.

McSwain, John Jackson. See United States Congress. House. Committee on Military Affairs: To encourage development of aviation and secure advancement of army aeronautics. . . . Report. To accompany H. R. 12471.

Madagascar. See D., Ch.: La première liaison aérienne France-Madagascar.

Madriu-Manila. The Madrid to Manila flight.

Aviation, Vol. 20, No. 20 (May 17, 1926), New York, pp. 750-751, ill.

Magalui, Giulio. Cenni sul problema dei grandi idrovolanti.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 209-245, ili.

- I problemi aerotecnici della Nave Portaerei.

L'Aerotecnica, Voi. 6, N. 1 (gen.-feh. 1926), Pisa, pp. 3-22, ill.

- Velivoli oceanici e transatlantici portaerei.

LAerotecnica, Giornale ed Atti dell'Associazione Italiana di Aerotecnica, Voi. 6, N. 5 (agosto-set. 1926), Pisa, pp. 317-334, ill.

Magnan, A. See Huguenard, E., A. Magnan, et A. Planiol: L'accéiérographe H. M. P. son application à la mesure des accelerations en vol.

- See Huguenard, E., A. Magnan, et A. Planiol: Les appareils à fils chauds

leur application à l'étude des mouvements atmosphériques.

- See Huguenard, E., A. Magnan, A, Planiol: Nouvelles experiences sur les

conditions mécaniques du vol des avions.

Magnesium. See Boyer, J. A.: The corrosion of magnesium and of the magnesium aluminum alloys containing manganese.

- »See Jones, W. R. D.: Notes on magnesium and its alloys.

Magnetos. See Langman, H. R.: The magneto manual.

Magni, Pieko. Aeroplani a finezza variable (a freni aerodynamic). Pisa, Mariotti:

Magnus. Una applicazione del fenomeno di Magnus al sostentamento dei velivoli.

Eivista Aeronautica, Anno 1, N. 1 (gen. 1926), Roma, pp. 115-120, ill.

- See Eula, Antonio: L'applicazione dell' effetto Magnus.

- See Prandtl, Ludwig: Application of the "Magnus Effect" to the wind

propulsion of ships.

Mahoney, B. F. The Ryan airlines.

Aero Digest, Vol. 9, No. 2 (Aug. 1926), New York, pp. 112, 150, ill.

Mail. Air mail on the Pacific coast.

Outlook, Vol. 144 (Sept. 29, 1926), New York, p. 138.

- Air-mail routes fast linking every section of U. S.

Pop. Mech., Vol. 46 (July 1926), Chicago, pp. 94-95, map.

- Air mail routes in the U. S.

Aero Digest, Vol. 9, No. 2 (Aug. 1926), New York, pp. 96-97, 160-161, 163, map.

- Air mail statistics show increased service.

Aviation, Vol. 21, No. 24 (Dec. 13, 1926), Now York, p. 995.

- Boston-New York air mßil line.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, pp. 498-199, ill.

- Chicago-St. Paul-Minneapolis air mail.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, p. 500, ill.

- The Chicago-St. Louis air-mail line.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, p. 499.

- Chicago to Dallas air-mail line.

Aviation, Vol. 20, No. 14 (Apr. 5,1926), New York, pp. 490-491, ill.

- Ford air transport. U. S. mail carried by air between Detroit and Cleveland and Detroit and Chicago.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, p. 492, ill.

- Ford contract air mail opens.

Aviation, Vol. 20, No. 9 (Mar. 1, 1926), New York, p. 292, ill.

- Jacksonville-Atlanta air mail opens.

Aero Digest, Vol. 9, No. 4 (Oct. 1926), New York, p. 320, ill.

- Lighting the night air mail. :

Literary Digest, Vol. 90 (July 31, 1926), New York, pp. 18-19, ill.

- New York to San Francisco transcontinental air-mail line now completely equipped with Douglas mail planes.

U. S. Air Services, Vol. 11, No. 12 (Dec. 1926), Washington, D. C, p. 29, ill.

- Seattle-San Francisco air mail line.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, p. 501, ill.

—■— U. S. air mail services. Offshoots from the transcontinental route. Plight, Vol. 18, No. 23 (June 10, 1926), London, p. 336, map.

- Varney air mail service an operating success. Report on five months'

operation—Salt Lake City to Pasco.

Aviation, Vol. 21, No. 26 (Dec. 27,1926), New York, p. 1076.

- Washington, Oregon, Idaho air mail.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, pp. 496-497, ill.

- See Boeing: The Boeing mail plane.

- See Breguet, Jacques: L'aviation civile et postale aux Etats-Unis.

- See Croydon: Night flying. An important factor in airmail development

- See Hanshue, Harris M.: Air mail operators' viewpoint.

——■ See Henderson, Paul: Winged mail to the southwest.

Mail. See Kirkwood, Harry: Reduce our air mail rates.

- See New, Harry S. : Transport trails blazed by the air mail lines.

- See Van Zandt, J. P. : On the trail of the air mail.

- See Whitbeck, J. E. : Operation of the air mail lines. Its possible application to other commercial airlines.

Malassez. See Garsaux, Malassez et Toussaint: Sur le vertige de rotation.

Mallet, Maurice. Maurice Mallet.

L'Aéronautique, 8me année, No. 90 (nov. 1926), Paris, p. 363, port.

Mal-mer, Ivar. Water or air-cooled aero-engines?

nie Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 407-414, tabl.

Malmgren, Finn. Studies of humidity and hoar-frost over the Arctic Ocean.

Geefysiske Publikasjoner, Vol. 4, No. 6. Utgift av det Norske Videnskaps-Akademi i Oslo, Oslo, A. W. Brpggers Boktrykkeri A/S 1926, pp. 20, ill.

- See Amundsen, Roald Engelbregt Gravning: Deu forste flukt over Pol-

havet. . . .

Mamer, N. B. Airplaues are saving our forests.

Aero Digest, Vol. 8, No. 3 (Mar. 1926), New York, pp. 133, 170-171, 176, ill.

Manchester. Flying at Manchester. The Lancashire aeroplane club's flying display.

Flight, Vol. 18, No. 16 (Apr. 22, 1926), London, pp. 236-239, ill.

Manigold, G. German training airplane, Arado "Ar. S. I."

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 4, Washington, May 1926, pp. 6, ill.

From "Zeitschrift für Flugtechnik und Motorluftschitlahrt," March 27,1926.

- Ein neues deutsches Schulflugzeug. Arado Ar. S. I.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 6. Heft (27. März 1926), München, pp. 109-111.

Manigold, Gg. Die "Haw"-Metall-Luftschraube.

Zeitchr. Flugt. Motorluftsch., 17. Jahrg., 10. Heft (28. Mai 1926), München, pp. 211-214, ill.

Mapping. See Alaska: Airplanes to be used for map work in Alaska.

Maps. See Giovine, Vittorio: Sulla costruzione di una carta aeronautica.

Mara, William A. The "Stinson-Detroiter."

Aero Digest, Vol. 8, No. 4 (Apr., 1926), New Y'ork, pp. 192-193, 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. Central Aerohydrodynamic Institute of Moscow, Russia.

National Advisory Committee for Aeronautics, Technical Memorandums No. 386, Nov. 8, 1926, (mimeographed), Washington, Novemher 1926, pp. 18, ill. From "L'Aéronautique," August 1926.

--L'Institut central aérohydrodynamique de Moscou de PU. R. S. S.

Laboratoires et travaux des sections des recherches aérodynamiques, des aéromoteurs et des recherches théoriques.

L'Aêrotechniquo (L'Aéronautique, 8me année, No. 87), 4e année, No. 44 (août 1926), Péris, pp. 263-269, ill.

Marshall, Dorothy. Further experiments on the relation between skin friction and heat transmission.

Aeronautical Research Committee, Reports and Memoranda, No. 1004 (Ae. 211), Nov., 1925, London, 1926, pp. 19, tabls., diagr.

Marshall, Edward. Rickenbacker foretells.

Aero Digest, Vol. 8, No. 2 (Feb. 1926), New York, pp. 63-65, 112, ill. Capt. Edward V. Rickenbacker.

Marshall, Harold F.^gHow will aircraft be sold?

Aviation, Vol. 21, No. 1 (July 5, 1926), New York, pp. 14-10.

Martens, A. Flying for an altitude record.

Living Age, Vol. 330 (July 3, 1926), Boston, pp. 38-40.

Martin, E. S. The Boy Scouts in aviation.

Aviation, Vol. 20, No. 7 (Feb. 15, 1926), New York, pp. 216-217, ill.

Martin, Glenn. The Glenn Martin commercial plane.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, p. 510, ill.

Martin, Glenn L. Glenn L. Martin Company. A city of factories within a factory.

U. S. Air Services, Vol. 11, No. 7 (July, 1926), Washington, D. C, pp. 18-21, ill.

Martínez, Pablo Enseñat. La aviación en la marina de guerra.

Ibérica, Año 13, No. 649 (23 oct. 1926), Barcelona, pp. 253-254.

Martinot-Laqarde. Das Flugzeugwesen zu Anfang 1926. Techn. Mod., Bd. 18,1926, pp. 103-110.

- Les progrès de la sécurité en avion.

l'Illustration, 84e année, No. 4371 (11 déc. 1926), Paris, pp. 675, ill. Martinot-Lagarde, C. L'aviation au début de 1926. Les groupes motor-propulseurs.

Technique Moderne, T. 18, No. 4 (15 fév. 1926), Paris, pp. 103-110, ill.

Marvin, G. Asia in the air.

Independent, Vol. 117 (Oct. 16, 1926), Boston, pp. 447-448, ill.

- Flying Asia.

Asia, Vol. 26 (Nov. 1926), New York, pp. 995-1000, ill., map.

- See Frost, H. H., and G. Marvin. Pacific airways; a menace or an asset in

relations between the United States and the Orient?

Mashitama, Y. See Shoji, H., and Y. Mashiyama: On the plasticity of metals

at high temperatures. Part II. Mason, Ethel I. Alaska is mapped by the "Polar Bears."

U. S. Air Services, Vol. 11, No. 8 (Aug. 1926), Washington, D. C, pp.|9-12, ill.

Massachusetts Institute Technology. Aeronautical work at M. I. T.

Aviation, Vol. 20, No. 17 (Apr. 26, 1926), New York, pp. 630-631, ill.

Mast, Mooring. Pilone d'ormeggio italiano per dirigibili.

Rivista Aeronáutica, Anno 2, N. 3 (marzo 1926), Roma, pp. 93-101, ill.

- I piloni d'ormeggio per dirigibili. ,

Rivista Aeronáutica Anno 2, N. 8 (agosto 1926), Roma, pp. 136-139, ill.

Materials. Corrugated metal sheet in aircraft structures.

Aviation, Vol. 20, No. 24 (June 14, 1926), New York, pp. 909-910, ill.

- See Green, F. M.: Aeroplane joints and fittings.

Mathias. Météorologie. Sur les phénomènes lumineux et sonores des éclairs fulgurants.

L'Aérophile, 34e année, Nos. 17-18 (ler-15 sept. 1926), Paris, pp. 261-262.

Matteucci, Raffaelli. Functioning of reduction gears on airplane engines.

National Advisory Committee for Aeronautics, Technical Memorandums No. 352, Mar. 5, 1926 (mimeographed) Washington, March 1926, pp. 9, ill. From "Notizaro Technico," December, 1926.

Maugeri, Franco. Nävi portaerei e aerei sulle navi dal punto di vista tattico. Rivista Aeronáutica, Anno 2, N. 11 (nov 1926), Roma, pp. 23-27.

- Su un tipo di nave porta-aerei.

Rivista Aeronáutica, Anno 2, N. 6 (giugno 1926), Roma, pp. 70-78.

Maugeri, Francesco. Velivoli sulle navi o idrovolanti a grande autonomía?

Rivista Aeronáutica, Armo 2, N. 2 (feb. 1926), Roma, pp. 49-54, map. Maurain, Charles. Fascicule spécial consecré aux expériences de la courtine sur la propagation des ondes aérienne.

Annales de l'Institut de Physique du Globe, Paris, 1926.

Maxim, Hudson. Airplanes and national defense.

Aero Digest, Vol. 9, No. 1 (July 1926), New York, p. 13.

Mat, Roland J. Aircraft dopes—points of interest.

Ilio Congrès International de la Navigation Aérienne, T. 3, Paris, [1925], pp. 125-132, tabls.

Mata, Jean. L'aviation de tourisme.

L'Aérophile, 34e année, Nos. 19-20 (ler-15 oct. 1926), Paris, pp. 311-313.

- L'expédition du "Norge."

L'Aérophile 34e année Nos. 7-8 (ler-15 avril 1926), Paris, pp. 118-119, ill.

- Robert Morane nous dit ce qu'il pense de la formation des pilotes et de

l'avenir du tourisme aérien.

L'Aérophile, 34e année, Nos. 9-10 (ler-15 mai 1926), Paris, pp. 134-136, ill.

Mateh, P. The Bristol high-speed flight to Cairo.

The Aeroplane, Vol. 31, No. 7 (Aug. 18, 1926), London, pp. 207-218, ill.

Mazer. See Beyne, Mazer, et Grenier: Inhalation d'oxygène pour vol à haute altitude.

Mazer, Paul. Les appareils avertisseurs ou correcteurs de perte de vitesse.

L'Aéroteohnique (L'Aéronautique, 8me année, No. 89), 4e année, No. 46 (oct. 1926), Paris, pp. 333-337, ill.

- Devices for prevention of stalled flight.

National Advisory Committee for Aeronautics, Technical Memorandums No. 389, Nov. 25, 1926 (mimeographed), Washington, November 1926, pp. 13, ill. From "L'Aéronautique," October 1926.

Mecozzi, Amedeo. Alcune idee meno consuete sul compito di collegamento col velivolo.

Rivista Aeronautica, Anno 2, N. 10 (ott. 1926), Roma, pp. 14-31.

- Il compito di contro-aviazione.

Rivista Aeronautica, Anno 2, N. 5 (mag. 1926), Roma, pp. 58-62.

- Le grande unità aviatorie e i compiti d'azione autonoma.

Rivista Aeronautica, Anno 2, N. 4 (aprile 1926), Roma, pp. 23-28.

- Il volo rasente e le sue possibilità tattiche.

Rivista Aeronautica, Anno 2, N. 6 (giugno 1926), Roma, pp. 53-69.

MEniciNE. Airplane brings medical aid.

Review of Reviews, Vol. 73 (June 1926), New York, pp. 660-661.

- Flying doctors.

Literary Digest, Vol. 89 (June 19, 1926), New York, p. 20.

- See Anastasiu, Victor C. : La tension artérielle chez les aviateurs.

- See Bauer, Louis Hopewell: Aviation medicine.

- See Beyne, J. : Les bases physiologiques du rélage des appareils à inhalation d' oxygène utilisés dans l'aéronautique.

- See Beyne, J.: Les épreuves psychophysiologiques dans l'examen d'aptitude à l'aéronautique.

- See Di Nola, Angelo: L'aviation sanitaire.

- See Ferry, Georges: Les deux temps du mal des aviateurs. Le cœur de

l'aviateur.

- See Flack, Martin: Stable nervous control in relation to flying efficiency.

- See Heald, C. B.: Some medical aspects of air transport.

- See Julliot, Ch. L.: L'aviation sanitaire devant le Vile Congrès Juridique

International de l'Aviation et la Xlle Conférence Internationale de la Croix-Rouge.

- See Rulot, H.: Note sur le contrôle sanitaire du trafic par avion.

- See Tilmant, A.: Les avions sanitaires et Chirurgicaux et l'organisation

de l'aviation sanitaire civile.

Mediterranean. Airways of the Mediterranean seaboard.

Aero Field, Vol. 1, No. 4 (July 1926), London, pp. 74-75, map.

Meissner, Karl Leo. Prüfung von Metallen im Luftfahrzeugbau.

Zeiitschr. Ver. deutsch. Ing., Bd. 70, Nr. 12 (20. März 1026), Berlin, pp. 423-424.

- Die Veredelungsvorgänge in vergütbaren Aluminiumlegierungen.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 6. Heft (27. März 1926), München, pp. 112-121, ill.

Melander, G. Rapport sur le travail de la section aérologique établie près de Helsinki (Finlande).

Ille Congrès International delà Navigation Aérienne, T. 2, Paris, [1925], p. 1.

Menier, Gaston. See Antoinat: Y a-t-il une crise de pilotes?

Menoher, Charles T. General Menoher retires.

TJ. S. Air Services, Vol. 11, No. 4 (Apr. 1926), Washington, T>. C, p. 20, ill.

Mercanton, P. L. Cumulus et courants ascendants.

L'Aéronautique, 8me année, No. 81 (fév. 1926), Paris, p. 50.

Meredith, F. W. Automatic landing of aeroplanes.

Aeronautics, Tech. Eept. Aaronautioal Eesearch Committee, 1924-25, Vol. 1, London, 1926, pp. 219-227.

- Experiments with rudders on two twin-engine aeroplanes.

Aeronautics, Tech. Eept. Aeronautical Eesearch Committee, 1924-25, Vol. 1, London, 1926, pp. 194-201, tabl., diagr.

•- Note on the minimum speed from which the direction of a gliding aeroplane can be changed to a horizontal path for landing.

Aeronautical Eesearch Committee, Eeports and Memoranda, No. 993 (Ae. 204), June, 1925, London, 1926, pp. 5, diagr.

Merritt, Schuyler. See United States Congress. House. Committee on Interstate and Foreign Commerce: Civil aviation. Report. To accompany S. 41.

Metal. See Airships: The metal-clad airship. -See Haddon, J. D. : Metal spars.

Metal aeroplanes. The maintenance of metal aeroplanes.

The Aeroplane, Vol. 30, No. 11 (Mar. 17, 1926), London, p. 292.

Metal balloons. See Morley-Jenkins, F.: Metal balloons.

Metal construction. L'économie de l'emploi des métaux ultra-légers en aéronautique.

Technique Moderne, T. 18, No. 4 (15 fév. 1920), Paris, p. 123.

■- Metal airplane construction.

National Advisory Committee for Aeronautics, Technical Memorandums No. 361, May 7, 1926 (mimeographed), Washington, May 1926, pp. 18, ill., diagrs.

Paper read at the Third International Congress of Aerial Navigation held at Brussels in October, 1925.

:- Sviluppo e stato attuale delle costruzioni metalliche per velivoli.

Eivista Aeronautica, Anno 2, N. 4 (aprile 1926), Eoma, pp. 122-143, ill.

■- See DeWoitine, M. E.: The metal construction of airplanes—its advantages—its present state—its future.

- See Dornier, C. : Recent developments in the construction and operation

of all-metal airplanes.

- See Dunlap, O. E.: Metal-clad airship.

- See Eisenlohr, Roland: Der Metallflugzeugbau iu Frankreich.

- See Green, F. M.: Use of metal for aeroplane construction.

- See Meissner, K. L. : Prüfung von Metallen im Luftfahrzeugbau.

- See Miller, A. B.: Metal aeroplane construction.

Metallurgy. See Daniels, Samuel, and F. T. Sisco: Metallurgy in aircraft construction.

- See Johnson, J. B.: Relationship of metallurgy to the development of

aircraft.

Metals. Le comité officiel allemand pour la protection des métaux. (Reichs-ausschuss für Metallschutz.)

Technique Moderne, T. 18, No. 5 (1er mars 1920), Paris, pp. 159-160.

—-—■ See Airships: Metal versus fabric; all-metal naval airship in which duralumin plating is used as an outside covering.

- See Regelsberger, Friedrich: Chemische Technologie der Leichtmetalle

und ihrer Legierungen.

- See Shoji, H.: On the plasticity of metals. Part 1.

- See Shoji, H., and Y. Mashiyama: On the plasticity of metals at high

temperatures. Part II.

Meteormotor engine. The Meteormotor engine.

Aviation, Vol. 20, No. 9 (Mar. 1, 1926), New York, p. 296, ill.

Meteorology. Air disturbances iu hilly country. Wind tunnel tests indicate how pilot may make use of natural air turbulence and what regions to avoid when flying.

Aviation, Vol. 21, No. 26 (Dec. 27, 1926), New York, pp. 1080-1081, ill.

-• See Air Council: Annual report of the Meteorological Committee to the

Air Council.

- See Camiciotti, Dante: La frequenza della nebbia in Italia.

- See Crestani, Giuseppe: Le nubi temporalesche e la navigazione aerea.

- See Dines, J. S.: Upper air temperatures and thunderstorms.

--See Dorlodot, Albert de: La protection météorologique des lignes aériennes.

-• See Eckersley, T. L.: Electrical constitution of the upper atmosphere.

- See Entwistle, F.: Meteorology in relation to the selection of aerodromes

sites.

- See Gold, E.: A numerical index of meteorological conditions on an aerodrome or on an air route for comparison with flying statistics.

- See Gregg, Willis Ray: Aeronautical meteorology.

- See Gregg, Willis Ray: Meteorological conditions along airways.

- See Gurney, F. J., and L. H. G. Dines: Revolving pilot balloons.

- See Malmgren, Finn: Studies of humidity and hoar-frost over the Arctic

Ocean.

- See Mathias: Météorologie. Sur les phénomènes lumineux et sonores

des éclairs fulgurants.

- See Mercanton, P.-L. : Cumulus et courants ascendants.

-■ See Moffett, William A.: Weather and national defense.

- See Seilkopf, Heinrich: Flugmeteorologische Streckenerfahrungen aus

dem nordwestlichen Deutschland.

- See Thomson, Andrew: Apia Observatory, Apia, Western Samoa, Lat.

13° 48.4'S Long. 171° 46.5'W. Upper air observations 1923-1924.

- See Vautier, Th.: Formes et déformations d'ondes aériennes.

--• See Ward, Robert DeC: The present status of long-range weather forecasting.

Mexico. Aviation in Mexico.

Aviation, Vol. 20, No. 16 (Apr. 19, 1926), New York, p. 600.

Meyer, C. W. Erich. Der Tiefdecker.

Dresden, Deutsche Motor Zeitschrift, 1925, pp. 13, ill.

Meyer, Eric. Deutsche Kraftfahrzeug-Typenschau: I. Luftfahrzeuge und Luftfahrzeugmotoren.

Dresdon, Verleg Deutsche Motor Zeitschrift.

106659—28-7

Meter, Eric. Sviluppo della costruzione dei monoplani ad ala bassa.

Rivista Aeronautica, Anno 2, N. 7 (luglio 1926), Roma, pp. 136-152, ill.

Meters Midget. The Meyers Midget.

Aviation, Vol. 21, No. 14 (Oct. 4, 1926), New York, pp. 592, 594, ill.

Micrometer. See Instruments: A really useful micrometer.

Mildner, Paul. Uber Luftdruckwellen. Synoptische Darstellung der 24

tägigen und der 8 tägigen Welle für die Zeit vom 10. Dezember 1923 bis

zum 19. Febr. 1924.

Veröffentlichungen des Geophysikalischen Institute der Universität, Leipzig, Bd. 3, Heft 3, 1926, Leipzig, pp. 173-239, diagrs. Zweite Serie, Specialarbeiten aus dem Geophysikalischen Instituts,

Militart aeronautics. Aerial armament and disarmament.

Review of Reviews, Vol. 74 (Aug. 1926), New York, pp. 203-204.

- Air force in national defense.

Review of Reviews, Vol. 73, (Mar. 1926), New York, pp. 314-315.

- Air Service training in the Army.

Aviation, Vol. 20, No. 25 (June 21, 1926), New York, p. 948.

- All-metal airplanes.

Scient. Amer., Vol. 134, (Jon. 1926), New York, pp. 50-54, ill.

- Bombing villages; a British army report; operations in Waziristan.

Nation, Vol. 122 (Mar. 17, 1926), New York, pp. 297-300.

- Mystery bomber.

Scient. Amer., Vol. 134 (Apr. 1926), New York, pp. 262-266, ill.

- Revising the rules of air warfare.

Sat. Even. Post, Vol. 199 (Oct. 30, 1926), Philadelphia, p. 24.

- Security in the air.

Flight, Vol. 18, No. 3 (Jan. 21, 1926), London, pp. 34-35.

- Victors over enemy aircraft. Air Service flyers who brought down one or

more enemy aircraft.

Aviation, Vol. 20, No. 6 (Feb. 8, 1926), New York, pp. 185-188.

- See Bastico, Ettore: L'arma aerea e l'intellettualità e spiritualità della

guerra.

- See Bosio, Antonio: Studio sull' ordinamento dei servizi dell' arma

aeronautica.

- See Cat, Mario Aimone: La difesa aerea dell' armata.

- See Fischetti, Ugo: Considerazione sulla guerra aerea.

- See France: Aeronautica militare. Francia. L'aviazione al Marocco.

- »See France. Aeronautica militare. Francia. Aviazione ed altri rapidi

mezzi di trasporto nelle operazioni coloniali.

- »See Jacques, P.: L'Allemagne organise son aviation militaire.

- »See Gallotti, Antonio: Alcuni aspetti della guerra dell' avvenire.

- »See Germany: Aeronautica militare. Germania. Aviazione, tanks e

gas.

- »See Great Britain: Aeronautica militare. Gran Brettagna. Difesa

aerea e forze aeree di riserva.

- »See Grenier, P.: Rayon d'action d'un avion de bombardement.

- »See Jugoslavia: Aeronautica militare. Jugoslavia. Prospositi e bisogni.

- »See Lehmann, E. A. : The military value of airships.

- »See Petracalvina, L. : L'aviazione nella difesa aerea territoriale.

- »See Pouzet, Edouard: Rapport fait au nom de la Commission de la marine

militaire chargée d'examiner le projet de loi sur le Statut naval (organization de l'aéronautique maritime).

Military aeronautics. See Pricolo, Francesco: La guerra nell' aria.

- See Sauvaire-Jourdan: L'aviation dans la marine de guerre.

- See Savoja: Aeronautica militare. L'evoluzione dell'aviazione durante

la guerra.

- See Shermann, William Carrington: Air warfare.

- See Spaight, James Molony: Aircraft and commerce in war.

- See Spanner, E. F.: The broken trident.

- See United States: Aeronautica militare. Stati Uniti. Difesa antiaerea.

- See United States Bureau of Aeronautics, Navy Department: Syllabus

for the training of naval aviators-airship. . . . November 3, 1926.

- See United States Congress. House. Committee on Military Affairs:

Department of defence and unification of air service. Hearings before the Committee on Military Affairs, House of Representatives, Sixty-ninth Congress, first session. January 19 to March 9, 1926.

- See United States Congress. House. Committee on Military Affairs:

To encourage development of aviation and secure advancement of army aeronautics. . . . Report. To accompany H. R. 12471.

- See United States Congress. House. Committee on Naval Affairs: To

encourage development of aviation. . . . Report to accompany H. R. 12472.

- See United States Joint Army and Navy Board: Report of the Joint

Board on results of aviation and ordnance tests held during June and July, 1921, and conclusions reached. Office of the Chief of Naval Operations, Navy Department.

- See Volla, Fernando: Schema di organizzazione di un servizio aerofotografico militare.

Miller, A. B. Metal aeroplane construction.

Junior Institution Engineers, Vol. 36 (May 1926), London, pp. 325-343, ill.

Miller, Elton W. See Munk, Max Michael, and Elton W. Miller: The aerodynamic characteristics of seven frequently used wing sections at full Reynolds number.

•- See Munk, Max Michael, and Elton W. Miller: Model tests with a systematic series of 27 wing sections at full Reynolds number.

- See Munk, Max Michael, and Elton W. Miller: The variable density

wind tunnel of the National Advisory Committee for Aeronautics.

Miller, Harold E., and Edward G. Beardsley. Spray penetration with a simple fuel injection nozzle.

National Advisory Committee for Aeronautics, Report No. 222, April 30,1926, Washington, Government Printing Office, 1926, pp. 8, ill., diagrs.

Miller, J. M. Development and test of Stromberg NA-Y5D carburetor for Curtiss D-12 engine.

Air Corps Information Circular, Vol. 6, No. 572 (Sept. 15,1926), Washington, Government Printing Office, 1926, pp. 15, ills., diagrs., tables.

- Development and test of Zenith ED-52 carburetor for Liberty "12"

engine.

Air Corps Information Circular, Vol. 6, No. 570 (Sept. 1, 1926), Washington, Government Printing Office, 1926, pp. 19, ill., diagrs.

Miller, William H. The N. Y. University wind tunnel.

Aviation, Vol. 20, No. 9 (Mar. 1, 1926), New York, pp. 293-295, ill.

Mills, T. B. Clothing for the flying man.

Pop. Mech., Vol. 45 (May 1926), Chicago, pp. 779-781, ill.

Mills, T. B. How airplanes are tested.

Pop. Meoh., Vol. 45, No. 2 (Feb. 1926), Chicago, pp. 232-234, ill.

Mingos, H. America takes lead in aviation.

World's Work, Vol. 51 (Apr. 1926), Garden City, N. Y., pp, 633-644, maps.

Mirea, St. N. Sur l'indice d'essai des avions.

Hie Congrès International da la Navigation Aérienne, T. 2, Paris, [1925], pp. 521-524, ill.

Mirgtjet, Henri. L'avion gigogne est-il possible?

L'Aérophile, 34a année, Nos. 21-22 (ler-15 nov. 1926), Paris, pp. 330-331.

Mitchell, R. J. Notes on the ground operation of flying boats.

Aircraft Engineer, suppl. Flight, Vol. 18, No. 12 (Mar. 25, 1926), London, pp. 178h-178j, ill.

Mitchell, William. Awake America!

Aero Digest, Vol. 9, No. 1 (July 1926), New York, p. 7, 69.

- Colonel Mitchell resigns from the Army.

Aviation, Vol. 20, No. 6 (Feb. 8,1926), New York, p. 183.

—— See Ranney, H. F.: Colonel William Mitchell declared guilty. Mittelzholer, Walther. Im Flugzeug dem Nordpol entgegen. Junkers'sche Hilfexpedition für Amundsen nach Spitzbergen 1923. Zürich und Leipzig, Orall Füssli, 1925, pp. 106, ill.

- Persienflug.

Leipzig, Berlin, Orell Füssli Verlag, Zürich, pp. 212, ill.

Mixon, R. E. See Carroll, T., and R. E. Mixon: The effect of tube length upon the recorded pressures from a pair of static orifices in a wing panel.

Moppett, William A. Shenandoah memorial service held at Lakehurst. ü. S. Air Services, Vol. 11, No. 7 (July 1926), Washington,- D. C, p. 39.

—- Weather and national defense.

Aero Digest, Vol. 9, No. 1. (July 1926), New York, pp. 9, 74, ill.

Moineau, R. Avion à voilure tournante.

C. R, Acad. Sei., T. 182, No. 18 (3 mai 1926), Paris, pp. 1079-1082.

Molpese, Manlio. Concetti fondamentali délia navigazione aerea italiana.

L'Aerotecnica, Giornale ed Atti dell'Assoeiaziona Italiana di Aeroteenica, Numero straordinario, Pisa, 1926, pp. 167-178.

Monpaix, P. »See Beghin, H., et P. Monfaix: Réalisation d'un compas gyro-

statique zenithal amorti. Monge. The de Monge type 7.5 monoplane.

Aero Digest, Vol. 8, No. 6 (June 1926), New York, pp. 340, 392, Dl.

Monney, C.-R. Les effets thermiques dans les parois des moteurs Diesel. La Technique Moderne, T. 18, No. 3 (lar fôv. 1926). Paris, pp. 79-81, ill.

Montée, Kenneth W. From ocean to ocean.

Aero Digest, Vol. 8, No. 1 (Jan. 1926), New York, pp. 7-8, 44-46, ill.

Montgolfier. »See LeRoy, Tillet, Brisson, Cadet, Lavoisier, Bossut: Rapport fait à l'Académie des Sciences sur la machine aérostatique de MM. de Montgolfier.

Montieth, Charles N. Slip stream effect.

National Advisory Committee for Aeronautics, Technical Memorandums No. 355, March 25,1926 (mimeographed), Washington, March 1926, pp. 7, tables, diagrs. From "Slipstream," December 1926.

Montjou, Guy de. Rapport fait (au cours de la précédente législature) au nom dè la Commission de la marine militaire chargée d'examiner le projet de loi sur le statut naval (organisation de l'aéronautique maritime).

Paris, Impr. da la Chambra des députés, Martinet, 1924, pp. iii, 800. (Chamhra des députés 13. législ., sess. de 1924, No. 227; annexe au procès-verhal ... 4 juillet 1924).

Mooring. Mooring a semi-rigid airship.

Flight, Vol. 18, No. 43 (Oct. 28, 1926), London, p. 708, ill.

- »See Dollfus, Charles: Les mâts d'amarrage.

- »See Mast, Mooring.

Mooring.. See Scott, G. Herbert: The development of airship mooring.

- See Thaden, Herbert V.: 210-ft airship mooring tower at Detroit airport.

Morane, Robert. Influence des méthodes d'apprentissage sur la sécurité.

Róle de la stabilite naturelle de forme.

L'Aéronautique, 8me année, No. 82 (mars 1926), Paris, pp. 95-96.

- See Maya, Jean: Robert Morane nous dit ce qa'i] pense de la formation

des pilotes et de l'avenir du tourisme aérien.

Morelli, Ercole. La celeste patrona degli aeronauti e l'Istituto per i figli degli aeronauti.

Rivista Aerouautioa, Anno 2, N. 3 (marzo 192C), Roma, pp. 173-185, ill.

Moreno-Caracciolo, M. La laboratoire de Cuatro Vientos.

I/Aérotechnique (L'Aéionautique, 8me année, No. 88),'4me annee, No. 45 (sept. 1926), Paris, pp. 295-297, ill.

Mori, Vittorio. L'aeronautica nella legge italiana e nella convenzione internazionale.

Roma, tip. U. Pinnarò, 1926, pp. xis, 109.

Morin, John M. See United States Congress. House. Committee on Military Affairs: Department of defence and unification of air service. Hearings before the Committee on Military Affairs, House of Representatives, Sixty-ninth Congress, first session. January 19 to March 9, 1926.

- See United States Congress. House. Committee on Military Affairs:

Notes, comments, and references arranged for the Committee on Military Affairs, House of Representatives, Sixty-ninth Congress, first session, on H. R. 10827, a bill to provide more effectively for the national defence by increasing the efficiency of the Air Corps of the Army of the United States, and for other purposes. May 1, 1926.

Morley, Jenkins F. First aerial voj'age in England.

Aero Field, Vol. 1, No. 6 (Sept. 1926), London, pp. 13CH132, 139, ill.

--Metal balloons.

Aero Field, Vol. 1, No. 5 (Aug. 1926), London, pp. 112-114, ill.

- The mystery of the first polar flight.

Aero Field, Vol. 1, No. 3 (June 1926), London, pp. 56-58, ill.

Morocco. See France: Aeronautica militare. Francia. L'aviazione al Marocco.

Morris, J. Airscrew vibration and gear stripping.

Journ. Roy. Aer. Soc, Vol. 30, No. 188 (Aug. 1926), London, pp. 495-502.

Morrow, Dwight Whitney. See United States. President's Aircraft Board: Report of President's aircraft board. November 30, 1925.

Moscow. See Margoulis, W.: L'Institut central aerohydrodynamique de

Moscou de l'U. R. S. S. Moss, H. See Stern, W. J., and H. Moss: An improved model of optical

indicator.

Moth. The Moth as a business proposition.

The Aeroplane, Vol. 30, No. 16 (Apr. 21, 1926), London, p. 426.

- Some "Moth" statistics.

Flight, Vol. 18, No. 45 (Nov. 11, 1926), Londou, p. 732.

Motive power. See Leyat, Marcel: L'aeropropulsion.

Mucklow, G. F. Hydrogen as an auxiliary fuel for a solid injection oil engine.

Aeronautical Research Committee, Reports and -Memoranda, No. 1029 (E. 20), Apr., 1926 London, 1926, pp. 16, tabls., diagr.

Munk, Max Michael and Elton W. Miller. The aerodynamic characteristics of seven frequently used wind sections at full Reynolds number.

National Advisory Committee for Aeronautics, Technical Notes No. 230, Feb. 10, 1926 (mimeographed), Washington, January 1926, p. 48, ill., tables.

Mtjnk,^Max Michael, and Walter S. Diehl. The air forces on a model of the Sperry messenger airplane without propeller.

National Advisory Committea for Aeronautics, Report No. 22S, Feb. 3, 1926, Washington, Government Printing Office, 1926, pp. 12, ill., tables, diagrs.

Munk, Max Michael and Elton W. Miller. Model tests with a systematic series of 27 wing sections at full Reynolds number.

National Advisory Committee for Aeronautics, Report No. 233, June 12, 1926, Washington, Government Printing Office, 1926, pp. 16, ill., diagrs., tables.

Mtjnk, Max Michael. The spacing of orifices for the measurement of pressure distribution.

National Advisory Committea for Aeronautics, Report No. 221, Dec. 23,1926, Washington, Governmant Printing Office, 1925, pp. 18, ill., tables, diagrs.

Mtjnk, Max Michael, and Elton W. Miller. The variable density wind tunnel of the National Advisory Committee for Aeronautics.

National Advisory Committea for Aeronautics, Report No. 227, March 2,1926, Washington, Government Printing Office, 1926, pp. 18, ill.

N

N., D. S. L'emploi des moteurs Diesel légers en aviation.

La Technique Modarne, T. 18, No. 22 (15 nov. 1926), Paris, p. 701.

Napier Lion. The famous Lion.

Tha Aeroplane, Vol. 31, No. 24 (Dec. 15,1926), London, pp. 776-779, ill.

- The Napier Lion.

The Aeroplane, Vol. 31, No. 23 (Dac. 8,1926), London, pp. 694-696, ill.

National Advisory Committee for Aeronautics. Aeronautics. Eleventh annual report of the National Advisory Committee for Aeronautics, 1925. Including technical reports Nos. 210 to 232.

Washington, Govarnmant Printing Offica, 1926, pp. 600, ills., diagrs., tabls. Tachnical Raports: No. 210. Inartla factors of ellipsoids for usa In airship dasign, by l. B. Tuckarman, pagas 61-67. No. 211. Watar modal tasts for samirlgid airships, by l. B. Tncker-man, pages 69-82. No. 212. Stability equations for airship hulls, by a. F. Zahm, pages 83-87. No. 213. A résumé of tha advances in theoretical aeronautics mada by Max M. Munk, by Joseph s. Ames, pages 89-134. No. 214. Wing spar stress charts and wing truss proportions, by Edward P. Warnar, pages 135-152. No. 215. Air forces, moments and damping on model of neat airship Shanandoah, by A. F. Zahm, R. H. Smith, and F. A. Loudan, pagas 153-184. No. 216. Tha raduction of airplana flight test data to standard atmosphere conditions, by Waltar s. Diahl, and E. P. Lesley, pages 185-202. No. 217. Preliminary wing model tasts in tha variable density wind tunnal of tha National Advisory Committee for Aeronautics, by Max M. Munk, pages 203-217. No. 218. Standard atmosphere tablas and data, by Walter s. Diahl, pages 219-246. No. 219. Some aspects of the comparison of modal and full-scale tests, by D. W. Taylor, pages 247-269. No. 220. Comparison of tests on air propallers in flight with wind tunnel model tasts on similar forms, by W. F. Durand and E. P. Leslay, pagas 271-299. No. 221. Modal tasts with a systematic sarias of 27 wing sactions at full Reynolds numbar, by Max M. Munk and Elton W. Millar, pages 301-318. No. 222. Spray panatration with a simpla fuel injection nozzla, by Harold E. Millar and Edward G. Baardslay, pages 319-326. No. 223. Pressure distribution on tha C-7 airship, by J. W. Crowley, Jr., and s. J. Da France, pagas 327-367. No. 224. An investigation of tha coefficient of discharge of liquids through small round oriflcas, by W. F. Joachim, pages 369-378. No. 225. Tha air forces on a modal of the Sparry messenger airplana without propaller, by Max M. Munk and Waltar s. Diahl, pagas 379-390. No. 226. Characteristics of a boat type seaplane during taka-oft, by J. W. Crowlay, Jr., and K. M. Ronan, pages 391-401. No. 227. Tha variabla dansity wind tunnal of the National Advisory Committaa for Aaronautics, by Max M. Munk and Elton W. Miller, pages 403-420. No. 228. a study of the effect of a diving start on airplana spead, by Walter s. Diahl, pages 421-429. No. 229. Pressura distribution over thick tapared airfoils, n. a. C. a. 81, tj. s. a. 27 C modified and tj. s. a. 35, by Elliott G. Raid, pages 431-448. No. 230. Description and laboratory tasts of a Roots typa aircraft engina suparchargar, by Marsdan Ware, pages 449-461. No. 231. Investigation of turbulanca in wind tunnals by a study of tha flow about cylinders, by H. L. Drydan and R. H. Heald, pages 463-179. No. 232. Fuels for high-compression engines, by Stanwood W. Sparrow, pages 481-500.

- Aeronautics: Twelfth annual report of National Advisory Coramittee

for Aeronautics, 1926. Administrative report without technical reports.

Washington, Government Printing Offica, 1926, pp. 69.

National Advisory Committee for Aeronautics. Aircraft Circulars, No. 1. Liore-Olivier airplane. (Type 12 nightbomber or type 20 commercial.) By J. Serryer.

National Advisory Committee for Aeronautics, April 7, 1926, (mimeographed), Washington March 1926, pp. 7, ill. From "Les Ailes," January 28, 1926.

- Aircraft Circulars, No. 2. The Pander light biplane. A school two-seater with 45 HP Anzani engine.

National Advisory Committee for Aeronautics, April 24, 1926, (mimeographed), Washington, April 1926, pp. 5, ill. From " Flight," April 1, 1926.

- Aircraft Circulars, No. 3. The Vickers "Vendace." A land or sea

training biplane.

National Advisory Committee for Aeronautics, May 8,1926 (mimeographed), Washington, May 1926, pp. 7, 111. From "Flight," March 18, 1926.

- Aircraft Circulars, No. 4. German training airplane, Arado "Ar. S. I,"

by G. Manigold.

National Advisory Committee for Aeronautics, May 14, 1926 (mimeographed), Washington, May 1926, pp. 6, ill. From "Zeitsehrift fur Flugtechnik und Motorluftschiffahrt," March 27, 1926.

- Aircraft Circulars, No. 5. The Short S. 7 " Mussel." A training seaplane

with 65 HP "Cirrus" engine.

National Advisory Committee for Aeronautics, May 21, 1926 (mimeographed), Washington, pp. 8, ill. From "Flight," March ii, 1926.

- Aircraft Circulars, No. 6. All-metal Junkers airplane, Type F 13.

National Advisory Committea for Aeronautics, May 28, 1926, (mimeographed), Washington, May 1926, pp. 13, 111., table. Translation from the German.

- Aircraft Circulars, No. 7. Two "Gloster" airplanes. The "Grouse

II,"—Two-seat training airplane. The "Grebe II,"—Single-seat fighter.

National Advisory Committee for Aeronautics, June 11, 1926 (mimeographed), Washington, June, 1926, pp. 9, ill. From "Flight," November 19, 1925.

- Aircraft Circulars, No. 8. The Albatros L 72A. A German newspaper

carrier with slotted wings.

National Advisory Committee for Aeronautics, June 18, 1926 (mimeographed), Washington, June 1926, pp. 4, ill. From "Flight," April 15, 1926.

- Aircraft Circulars, No. 9. Wibault two-seat monoplane 8C2. An all-metal pursuit and observation airplane, by J. Serryer.

National Advisory Committee for Aeronautics, June 30, 1926 (mimeographed), Washington, June 1926, pp. 6, ill. From "Les Ailes," May 13, 1926, and "The Aeroplane," April 14, 1926.

- Aircraft Circulars, No. 10. A new De Havilland commercial airplane.

The D. H. 66 with three Bristol "Jupiter" engines.

National Advisory Committee for Aeronautics, July 20, 1926 (mimeographed), Washington, July 1926, pp. 9, ill. From "Flight," June 10,1926.

- Aircraft Circulars, No. 11. The Blackburn "Sprat." A training airplane convertible into landplane or seaplane.

National Advisory Committee for Aeronautics, July 30, 1926 (mimeographed), Washington, July 1926, pp. 7, ill. From "Flight," May 27, 1926.

- Aircraft Circulars, No. 12. Farman monoplane F. 170. Commercial airplane with one 500 HP. Farman engine, by J. Serryer.

National Advisory Committaa for Aeronautics, Aug. 16, 1926, (mimeographed), Washington, August, 1926, pp. 5, ill. From "Les Ailes," April 8, 1926.

National Advisory Committee for Aeronautics. Aircraft Circulars, No. 13. Heinkel airplane H. D. 39 for carrying newspapers.

National Advisory Committee for Aeronautics, Aug. 27, 1926 (mimeographed), Washing ton, August 1926, pp. 9, ill. From "Flugsport," May 1, 1926.

- Aircraft Circulars, No. 14. The Armstrong-Whitworth "Argosy." The

latest three-engined commercial airplane.

National Advisory Committee for Aeronautics, Aug. 31,1926 (mimeographed), Washington, August 1926, pp. 7, ill. From "Flight," July 1, and August 5, 1926.

- Aircraft Circulars, No. 15. The Farman commercial airplane "Jabiru."

National Advisory Committee for Aeronautics, Sept. 10, 1926 (mimeographed), Washington, September 1926, pp. 6, ill. Translation from the French.

- Aircraft Circulars, No. 16. Albatros commercial airplane L 73. Karl

Riihl and Hasso Weiderhold.

Natioual Advisory Committee for Aeronautics, Sept. 29, 1926 (mimeographed), Washing' ton, September ¿926, pp. 12, ill.

From "Zeitschrift fur Flugtechnik und Motorluftschifrahrt" July 28, 1926.

- Aircraft Circulars, No. 17. The Avro "Avian" airplane. 65 HP. Arm-

strong-Siddeley "Genet" engine.

National Advisory Committee for Aeronautics, Oct. 8, 1926 (mimeographed), Washing' ton, October 1926, pp. 6, ill.

From "Flight," August 26, 1926.

■- Aircraft Circulars, No. IS. The De Havilland "Moth."

National Advisory Committee for Aeronautics, Oct. 15, 1926 (mimeographed), Washington, October 1926, pp. 5, ill. From "Flight," March 5, 1925.

- Aircraft Circulars, No. 19. The Bristol "Badminton" airplane.

National Advisory Committee for Aeronautics, Oct. 29, 1926 (mimeographed), Washington, October 1926, pp. 7, ill. From "Flight," July 8, 1926.

- Aircraft Circulars, No. 20. The Handley Page "Hamlet."

National Advisory Committee for Aeronautics, Nov. 12, 1926 (mimeographed), Washington, November 1926, pp. 7, ill.

From "Tha Aeroplane," October 13, 1926, and "Flight," October 14,1926.

- Aircraft Circulars, No. 21. The A. N. E. C. IV "Missel Thrush" light

airplane.

National Advisory Committee for Aeronautics, Nov. 19, 1926 (mimeographed), Washington, November 1926, pp. 8, ill. From "Flight," September 9,1926.

- Aircraft Circulars, No. 22. Avia pursuit airplaue B. H. 21, by J. Serryer.

National Advisory Committee for Aeronautics, Nov. 26, 1926 (mimeographed), Washington, November 1926, pp. 5, ill. From "Les Ailes," May 28, 1925.

- Aircraft Circulars, N. 23. Albert TE-1 trainiug airplane.

National Advisory Committee for Aeronautics, Dec. 4, 1926 (mimeographed), Washington, December 1926, pp. 5, ill.

- Aircraft Circulars, No. 24. Rohrbach all metal commercial airplane RO

VIII "Roland."

National Advisory Committee for Aeronautics, Dec. 10, 1926 (mimeographed), Washington, December 1926, pp. 6, ill.

- Aircraft Circulars, No. 25. The supermarine ",Southampton" seaplane

(Observation or bomber).

National Advisory Committee for Aoronautics, Dec. 17, 1926 (mimeographed), Washington, December 1926, pp. 14, ill. From "Flight," November 18 and 25, 1926.

ational Advisory Committee for Aeronautics. Aircraft Circulars, No. 26. The Boulton and Paul "Bugle" airplane. (Day bomber.)

National Advisory Committee for Aeronautics, Dec. 31, 1926 (mimeographed), "Washington, December 1926, pp. 6, ill. From "Flight," April 23, 1925, and "The Aeroplane," April 29, 1925.

— Bibliography of Aeronautics 1923, by Paul Brockett. Washington, Government Printing Office, 1926, pp. 144.

- Bibliography of Aeronautics 1924, by Paul Brockett.

Washington, Government Printing Office, 1926, pp. 114.

-- List of reports with prices. Edition of May 1, 1926.

Washington, Government Printing Office, 1926, pp. 25.

- Nomenclature for aeronautics.

Washington, Government Printing Office, 1926, pp. 77, ill.

- Progress is shown in N. A. C. A. annual report.

Aviation, Vol. 21, No. 25 (Dec. 20, 1926), New York, pp. 1034-1035.

- Report No. 219. Some aspects of the comparison of model and full-scale

tests by D. W. Taylor.

National Advisory Committee for Aeronautics, March 12, 1926, Washington, Government Printing Office, 1926, pp. 23, ill., diagrs.

- Report No. 220. Comparison of tests on air propellers in flight with

wind tunnel model tests on similar forms, by W. F. Durand and E. P. Lesley.

National Advisory Committee for Aeronautics, March 31, 1926, Washington, Government Printing Office, 1926, pp. 29, ill., tables, diagrs.

- Report No. 221. Model tests with a systematic series of 27 wing sections

at full Reynolds number, by Max M. Munk and Elton W. Miller.

National Advisory Committee for Aeronautics, Dec. 23, 1926, Washington, Government Printing Office, 1925, pp. 18, ill., tahles, diagrs.

- Report No. 222. Spray penetration with a simple fuel injection nozzle,

by Harold E. Miller and Edward G. Beardsley.

National Advisory Commitee for Aeronautics, April 30, 1926, Washington, Government Printing Office, 1926, pp. 8, ill., diagrs.

- Report No. 223. Pressure distribution on the C-7 airship, by J. W.

Crowley, jr., and S. J. DeFrance.

National Advisory Committee for Aeronautics, July 29, 1926, Washington, Government Printing Office, 1926, pp. 41, ill., tables.

- Report No. 224. An investigation of the coefficient of discharge of

liquids through small round orifices, by W. F. Joachim.

National Advisory Committee for Aeronautics, March 18, 1926, Washington, Government Printing Office, 1926, pp. 10, ill., diagrs.

- Report No. 225. The air forces on a model of the Sperry messenger airplane without propeller, by Max M. Munk and Walter S. Diehl.

National Advisory Committee for Aeronautics, Feb. 3, 1926, Washington, Government Printing Office, 1925, pp. 12, ill., tables, diagrs.

- Report No. 226. Characteristics of a boat type seaplane during take-off,

by J. W. Crowley, jr., and K. M. Ronan.

National Advisory Committee for Aeronautics, April 23, 1926, Washington, Government Printing Office, 1926, pp. 11, ill., diagrs.

- Report No. 227. The variable density wind tunnel of the National

Advisory Committee for Aeronautics, by Max M. Munk and Elton W. Miller.

National Advisory Committee for Aeronautics, March 2, 1926, Washington, Government Printing Office, 1926, pp. 18, ill.

- Report No. 228. A study of the effect of a diving start on airplane speed,

by Walter S. Diehl.

National Advisory Committee for Aeronautics, Feb. 12, 1926, Washington, Government Printing Office, 1925, pp. 9, tahles. diagrs.

106659—28-8

National Advisory Committee for Aeronautics. Report No. 229. Pressure distribution over thick tapered airfoils, N. A. C. A. 81, U. S. A. 27 C. modified and U. S. A. 35, by Elliott G. Reid.

National Advisory Committee for Aeronautics, June 5, 1926, Washington, Government Printing Office, 1926, pp. 18, ill., tables.

- Report No. 230. Description and laboratory tests of a Roots type aircraft engine supercharger, by Marsden Ware.

National Advisory Committee for Aeronautics, March 23, 1926, Washington, Government Printing Office, 1926, pp. 13, ill., diagrs.

- Report No. 231. Investigation of turbulence in wind tunnels by a stud}7

of the flow about cylinders, by H. L. Dryden and R. H. Heald.

National Advisory Committee for Aeronautics, April 16, 1926, Washington, Government Printing Office, 1926, pp. 17, ill., diagrs.

- Report No. 232. Fuels for high-compression engiues, by Stanwood W.

Sparrow.

National Advisory Committee for Aeronautics, Jan. 14, 1926, Washington, Government Printing Office, 1925, pp. 20, ill., diagrs.

—— Report No. 233. The aerodynamic characteristics of seven frequently used wing sections at full Reynolds number, by Max M. Munk and Elton W. Miller.

National Advisory Committee for Aeronautics, June 12, 1926, Washington, Government Printing Office, 1926, pp. 16, ill., diagrs., tables.

- Report No. 234. Three methods of calculating range and endurance of

airplanes, by Walter S. Diehl.

National Advisory Committee for Aeronautics, May 27, 1926, Washington, Government Printing Office, 1926, pp. IS, tables, diagrs.

- Report No. 235. Interaction between air propellers and airplane structures, by W. F. Durand.

National Advisory Committee for Aeronautics, Aug. 26, 1926, Washington, Government Printing Office, 1926, pp. 23, ill., tables, diagrs.

- Report No. 236. Tests on airplane fuselages, floats and hulls, by Walter

S. Diehl.

National Advisory Committee for Aeronautics, June 22, 1926, Washington, Government Printing Office, 1926, pp. 22, ill., diagrs.

- Report No. 237. Tests on thirteen Navy type model propellers, by

W. F. Durand.

National Advisory Committee for Aeronautics, Nov. 5, 1926, Washington, Government Printing Office, 1926, pp. 17, diagrs.

- Report No. 23S. The effect of flight path inclination on airplane velocity,

by Walter S. Diehl.

National Advisory Committee for Aeronautics, June 28, 1926, Washington, Government Printing Office, 1926, pp. 11, tables, diagrs.

- Report No. 239. Power output and air requirements of a two-stroke

cycle engine for aeronautical use, by C. R. Paton and Carlton Kemper.

National Advisory Committee for Aeronautics, Sept. 25, 1926, Washington, Government Printing Office, 1926, pp. 11, ill., diagrs.

- Report No. 240. Nomenclature for aeronautics, by National Advisory

Committee for Aeronautics.

National Advisory Committee for Aeronautics, -, 1926, Washington, Government

Printing Office, 1926, pp. 77, ill.

- Report No. 241. Electrical characteristics of spark generators for automotive ignition, by R. B. Brode, D. W. Randolph, and F. B. Silsbee.

National Advisory Committee for Aeronautics, Dec. 17, 1926, Washington, Government Printing Office, 1926, pp. 32, tables, diagrs.

- Report No. 242. Characteristics of a twin-float seaplane during take-off,

by John W. Crowley, jr., and K. M. Ronan.

National Advisory Committee for Aeronautics, Sept. 30, 1926, Washington, Government Printing Office, 1926, pp. 16, ill., diagrs.

National Advisory Committee for Aeronautics. Report No. 243. A preliminar}' study of fuel injection and compression ignition as applied to an aircraft engine cylinder, by Arthur W. Gardiner.

National Advisory Committee for Aeronautics, Nov. 29, 1923, Washington, Governman t Printing Office, 1926, pp. 14, ill., tables, diagrs.

- Report No. 244. Aerodynamic characteristics of airfoils-IV, by National Advisor}' Committee for Aeronautics.

National Advisory Committee for Aeronautics, Sept. 13, 1926, Washington, Government Printing Office, 1926, pp. 187-230, diagrs.

- Report No. 245. Meteorological conditions along airways, by W. R.

Gregg.

National Advisory Committee for Aeronautics, June 9, 1925, Washington, Government Printing Office, 1926, pp. 16, tables, diagrs.

- Report No. 246. Tables for calibrating altimeters and computing altitudes based on the standard atmosphere, by W. G. Brombacher.

National Advisory Committee for Aeronautics, Jan. 14, 1926, Washington, Government Printing OfBce, 1926, pp. 24, tables.

- Report No. 247. Pressure of air coming to rest from various speeds, by

A. F. Zahm.

National Advisory Committee for Aeronautics, Oct. 29, 1926, Washington, Government Printing Office, 1926, pp. 7, diagrs., ill., table.

- Report No. 248. The corrosion of magnesium and of the magnesium

aluminum alloys containing manganese, by J. A. Boyer.

National Advisory Committee for Aeronautics, Feb. 26, 1927, Washington, Government Printing Office, 1926, pp. 38, ill.

- Technical Memorandums No. 344. Calculation of tubular radiators of

the automobile type, by L. Richter.

National Advisory Committee for Aeronautics, Jan. 21, 1926, (mimeographed), Washington , January, 1926, pp. 66, ill., tahles. From " Zeitschrift fiir engewandte Mathematik und Mecbanik," August, 1925.

- Technical Memorandums No. 345. Photographic time studies of airplane paths, b}' A. G. von Baumhauer.

National Advisory Committee for Aeronautics, Jan. 7, 1926 (mimeographed), Washington, January, 1926, pp. 10, ill.

"Report V 79" from "Verslagen en Verhandelingen van den Rijks-Stuaiodienst voor. Luchtvaart," Part III, 1925.

- Technical Memorandums No. 346. Behm acoustic sounder for aircraft.

National Advisory Committee for Aeronautics, Jan. 11, 1926 (mimeographed), Washington, January, 1926, pp. 5, ill. From " Flugsport," November 11, 1925.

- Technical Memorandums No. 347. Two-stroke-cycle engines for airplanes, by J. Jalbert.

National Advisory Committee for Aeronautics, Jan. 29, 1926 (mimeographed), Washington, January, 1926, pp. 23, ill. From L'Aéronautique," July and August, 1925.

- Technical Memorandums No. 348. Protection of wooden airplane parts

against moisture by means of varnish, by E. B. Wolff and L. J. G. Van Ewijk.

National Advisory Committee for Aeronautics, Feb. 5, 1926 (mimeographed), Washington, February, 1926, pp. 23, tahles, diagrs.

From "Verslagen en Verhandelingen van den Rijks-Studiedienst voor de Luchtvaart," Part III, 1925, Report M 14 A.

- Technical Memorandums No. 349. The metal construction of airplanes—

its advantages—its present state—its future, by M. E. DeWoitine.

National Advisory Committee for Aeronautics, Feb. 13, 1926 (mimeographed), Washington, Fehruary, 1926, pp. 27. Paper read before the Institution of Aeronautical Engineers, Decomber 15, 1925.

National Advisory Committee for Aeronautics. Technical Memorandums No. 350. Change of 180° in the direction of a uniform current of. air. Contribution by the Aerodynamic Laboratory of the Warsaw Polytechnic Institute, Directed by Professor C. Witoszynski. Prepared for publication by J. Bonder.

National Advisory Committee for Aeronautics, Feb. 19, 1926 (mimeographed), Washington, February, 1926, pp. 31, ill.

- Technical Memorandums No. 351. Kirsten-Boeing propeller, by H.

Sachse.

National Advisory Committee for Aeronautics, Feh. 25, 1926 (mimeographed), Washington, February, 1926, pp. 8, ill. From " Zeitschrift für Flugtechnik und Motorlultschiffahrt," January 14, 1926.

- Technical Memorandums No. 352. Functioning of reduction gears on

airplane engines, by Raffaelli Matteucci.

National Advisory Committee for Aeronautics, Mar. 5,1926 (mimeographed), Washington, March, 1926, pp. 9, ill. From"Notiziario Tecnico," December, 1925.

- Technical Memorandums No. 353. Recent experiments with large seaplanes, by Adolf Rohrbach.

National Advisory Committee for Aeronautics, Mar. 11, 1926 (mimeographed), Washington, March, 1926, pp. 33, ill.

From "Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt," July, 1925.

- Technical Memorandums No. 354. Tests for determining the effect of a

rotating cylinder fitted into the leading edge of an airplane wing, by E. B. Wolff and C. Koning.

National Advisory Committee for Aeronautics, Mar. 18, 1926 (mimeographed), Washington, March, 1926, pp. 15, ills., diagrs., tahles.

From a preprint of Eeport A.105 of the " Kijks-Studiedienst voor de Luchtvaart," Amsterdam.

- Technical Memorandums No. 355. Slip stream effect, by Charles N.

Montieth.

National Advisory Committee for Aeronautics, March 25, 1926 (mimeographed), Washington, March, 1926, pp. 7, tables, diagrs. From "Slipstream," December, 1925.

- Technical Memorandums No. 356. The fundamental principles of highspeed semi-Diesel engines, by Dr. Büchner. Part I. A general discussion of the subject of fuel injection in Diesel engines and detailed descriptions of many types of injection nozzles.

National Advisory Committee for Aeronautics, Mar. 31,1926 (mimeographed), Washington, April, 1926, pp. 23, ill. From "Jahrhueh der Brennkraftteehnischen Gesellschaft," Vol. 5, 1924.

- Technical Memorandums No. 357. The fundamental principles of highspeed semi-Diesel engines, by Dr. Büchner. Part II. A discussion of the semi-Diesel principle and its application to various types of solid-injection engines.

National Advisory Committee for Aeronautics, April 8, 1926 (mimeographed), Washington, April, 1926, pp. 27, ill. From "Jahrbuch der Brennkraftteehnischen Gesellschaft," Vol. 5, 1924.

- Technical Memorandums No. 358. The fundamental principles of highspeed semi-Diesel engines, by Dr. Büchner. Part III. A discussion of fuel mixing and ignition, with special reference to engines with precombustion chambers.

National Advisory Committee for Aeronautics, April 17, 1926, (mimeographed), Washington, April 1926, pp. 26, ill. From " Jahrhueh der Brennkraftteehnischen Gesellschaft," Vol. V, 1924.

National Advisoet Committee for Aeronautics. Technical Memorandums No. 359. Flight tests on airplanes, by Heinrich Koppe.

National Advisory Committee for Aeronautics, April 22, 1926 (mimeographed), Washington, April 1926, pp. 31, ill.

From "Barlchte und Abbandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt," July 1925.

- Technical Memorandums No. 360. Mixing and ignition in supercharged

engines.

National Advisory Committae for Aaronautics, April 30, 1926, (mimeographad), Washington, April 1926, pp. 26, ill. From "Dar Motorwagen," Dacemher 10, 1925.

- Technical Memorandums No. 361. Metal airplane construction.

National Advisory Committea for Aaronautics, May 7, 1926,':(mimaographed), Washington, May 1926, pp. 18, ill., diagrs.

Papar read at tha Third Internation al Congress of Aarial Navigation held at Brussals in Octobar, 1925.

- Technical Memorandums Nos. 362, 363, 384 and 392. Experimental

investigation of the physical properties of medium and heavy oils, their vaporization and use in explosion engines, by Fritz Heinlein, Part I, II, III, IV.

National Advisory Committee for Aeronautics, May 15 and 21, Oct. 21, Dac. 23, 1926 (mimeographed), Washington, pp. 25, 37, 22, 38, ills., diagrs., tables. From "Dar Motorwagen," Oct. 10, 31, Dec. 20,1925; Fab. 10, June 30, Sapt. 30, Nov. 10, 1926i

•- Technical Memorandums No. 364. Kinetographic flow pictures, by L.

Prandtl and O. Tietjens.

National Advisory Committea for Aaronautics, May 29, 1926, (mimeographed), Washington, May 1926, pp. 6, ill From "Dia Naturwissanschaftan," Vol. 13.

- Technical Memorandums No. 365. Tasks of air flow research, by L.

Prandtl.

National Advisory Committee for Aaronautics, Juna 7, 1926, (mimeographad), Washington, June 1926, pp. 11. From " Die Naturwissenschaften," Vol. 14, No. 16.

- Technical Memorandums No. 366. Calculation of combining effects in

the structure of airplane wings. A rational basis for estimating the reduction in the design load on wing beams due to the influence of ribs and covering toward causing the beams to deflect together, by K. Thalau.

National Advisory Committea for Aaronautics, Juna 10, 1926, (mimeographad), Washington, June 1926, pp. 16. ill.

From "Berichts und Abhandlungen der Wissenschaftlichan Gesellschaft für Luftfahrt," July 1925.

- Technical Memorandums No. 367. Application of the " Magnus Effect"

to the wind propulsion of ships, by L. Prandtl.

National Advisory Committea for Aaronautics, Juna 21, 1926 (mimaographed), Washington, June 1926, pp. 37, ill. From "Die Naturwissenschaften," Vol. 13, June 2,1925.

- Technical Memorandums No. 368. Metal spars, by J. D. Haddon.

National Advisory Committea for Aaronautics, July 1, 1926 (mimeographed), Washington, Juna 1926, pp. 9, ill. From "Flight," February 25, 1926.

- Technical Memorandums No. 369. Tests on an airfoil with two slots

suitable for an aircraft of high performance. Lift, drag, rolling and yawing

' moment measurements, by F. Handley Page.

National Advisory Committea for Aaronautics, Juna 8, 1926 (mimeographed), Washington, July 1926, pp. 12, diagrs. From "Flight", January 28,1926.

ATioNAL Advisohy Coîjmittee foe Aeronautics. Technical Memorandums No. 370. Development of light and small air-planes, by G. Lachmann.

National Advisory Committee for Aeronautics, July 17, 1928 (mimeographed), Washington, July 1926, pp. 44, ill., diagr.

From "Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt," July 1925.

— Technical Memorandums No. 371 On the knocking of gasoline engines, by Ludwig Richter.

National Advisory Committee for Aeronautics, Aug. 17, 1926 (mimeographed), Washington, July 1926, pp. 40, diagrs. From "Der Motorwagen," 1925: Nov. 20; 1926: Jan. 20, May 10, June 20.

— Technical Memorandums No. 372. First experiences with the rotating laboratory, by L. Prandtl.

National Advisory Committee for Aeronautics, July 29, 1926 (mimeographed), Washington, July 1926, pp. 8. From "Naturwissenschaften," May 7, 1926, (Vol. 14).

•— Technical Memorandums No. 373. Tail planes, by L. Constantin.

National Advisory Committee for Aeronautics, Aug. 5, 1926 (mimeographed), Washington, August 1926, pp. 7. From "L'Aerophile," May 1-15, 1926.

— Technical Memorandums No. 374. Experiments with an airfoil from which the boundary layer is removed by suction, by J. Ackeret, A. Betz and O. Schrenk.

National Advisory Committee for Aeronautics, Aug. 17,1923 (mimeographed), Washington, August 1926, pp. 4, ill.

From "Vorläufige Mitteilungen der Aerodynamischen Versuchsanstalt zu Göttingen," No. 4, November 1925.

■— Technical Memorandums No. 375. Effect of roughness on properties of airfoils, by O. Schrenk.

National Advisory Committee for Aeronautics, Aug. 23, 1926 (mimeographed), Wasington, August 1926, pp. 4, diagrs.

From "Vorläufige Mitteilungen der Aerodynamischen Versuchsanstalt zu Göttingen," No. 4, November 1925.

— Technical Memorandums No. 376. Designing seaplane hulls and floats, by Lieutenant- Benoit.

National Advisory Committee for Aeronautics, Aug. 26, 1926 (mimeographed), Washington, August 1926, pp. 17, ill. From "L'Aéronautique," June 1926.

— Technical Memorandums No. 377. The Belgian aerotechnical laboratory at Rhode-Saint-Genese.

National Advisory Committee for Aeronautics, Sept. 7, 1926 (mimeographed), Washington, September 1926, pp. 8, ill. From Bulletin of the Technical Service of Aeronautics (Brussels), January 1926.

— Technical Memorandums No. 378. Recent developments in the construction and operation of all-metal airplanes, by C. Dornier.

National Advisory Committee for Aeronautics, Sept. 15,1926 (mimeographed), Washington, September 1926, pp. 23, ill.

From "Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt, May 1926.

— Technical Memorandums No. 379. Digest of some of the speeches made at the fifteenth regular meeting of the "Wissenschaftliche Gesellschaft für Luftfahrt" June 17, 1926, in Düsseldorf, Germany.

National Advisory Committee for Aeronautics, Sept. 17, 1926 (mimeographed), Washington, September 1926, pp. 15. From "Zeitschrift für Flugtechnik und Motorluftschiffahrt" July 14, 1926.

— Technical Memorandums No. 380. Experiments on autorotation, by E. Anderlik.

National Advisory Committee for Aeronautics, Sept. 23,1926 (mimeographed), Washington, September 1926, pp. 11, ill. diagrs. From "Zeitschrift für Fiugtechnfk und Motorluftschiflahrt" August 28, 1926]

ational Advisory Committee for Aeronautics. Technical Memorandums No. 381. Take-off distance for airplanes, by A. Pröll.

National Advisory Committae for Aeronautics, Sept. 30, 1926 (mimeographed), Washington, September 1926, pp. 23, ill. From "Zeitschrift für Flugtechnik und Motorluftscbiftabrt" August 14, 1926.

— Technical Memorandums No. 382. Experiments with rotating cylinders in combination with airfoils, by Kurt Frey.

National Advisory Committee for Aeronautics, Oct. 8, 1926 (mimeogrsphad), Washington, October 1926, pp. 9, ill. From " Zeitschrift für Flugtechnik und Motorluftscbiffahrt " August 23, 1926.

- Technical Memorandums No. 383. Spindled and hollow spars, by J. D.

Blyth.

National Advisory Committee for Aeronautics, Oct. 15,1926 (mimeographed), Washington, Octoher 1926, pp. 7, tables. From "Flight," August 26, 1926.

-■ Technical Memorandums No. 385. Cooling of air-cooled engines by

forced circulation of air.

National Advisory Committee for Aeronautics, Oct. 28, 1926 (mimeographed), Washington, October 1926, pp. 3, ill. From "Les Ailes," September 9, 1926.

- Technical Memorandums No. 386. Central Aerohydrodynamic Institute

of Moscow, Russia, by W. Margoulis.

National Advisory Committee for Aeronautics, Nov. 8, 1926 (mimeographed), Washington, Novembar 1926, pp. 18, ill. From "L'Aéronautique," August 1926.

- Technical Memorandums No. 387. Approximate calculation of the static

longitudinal stability of airplanes, by Theodor Bienen.

National Advisory Committee for Aeronautics, Nov. 13, 1926 (mimeographed), Washington, November 1920, pp. 22,ill. From "Zeitschrift für Flugtechnik und Motorluftschiflabrt " July 28, 1926.

- Technical Memorandums No. 388. Experiments with a sphere from

which the boundary layer is removed by suction, by Oskar Schrenk.

National Advisory Committee for Aeronautics, Nov. 20, 1926 (mimeographed), Washington, Novemhar 1926, pp. 20, ill. From "Zeitschrift für Flugtechnik und Motorluftscbiffahrt," September 14,1926.

- Technical Memorandums No. 389. Devices for prevention of stalled

flight, by Paul Mazer.

National Advisory Committee for Aeronautics, Nov. 25, 1926 (mimeographed), Washington, November 1926, pp. 13, ill. From "L'Aéronautique," October 1926.

- Technical Memorandums No. 390. Determining size of drops in fuel

mixture of internal combustion engines, by J. Sauter.

National Advisory Committee for Aeronautics, Dec. 2, 1926 (mimeographed), Washington, Dacember 1926, pp. 8, ill. From "Zeitschrift des Vereines dautscber Ingeniaure" July 31, 1926.

- Technical Memorandums No. 391. Experiments on self-ignition of

liquid fuels, by Kurt Neumann.

National Advisory Committee for Aeronautics, Dec. 16, 1926 (mimeographed), Washington, December 1926, pp. 25, ill., tables. From " Zeitschrift des Vereines dautscber Ingenieure, August 7, 1926.

- Technical Notes No. 230. The spacing of orifices for the measurement of

pressure distribution, by Max M. Münk.

National Advisory Committee for Aaronautics, Feh. 10,1926 (mimeographed), Washington, January 1926, pp. 48, ill., tables.

- Technical Notes No. 231. The resistance tothe steady motion of small

spheres in fluids, by R. A. Castleman.

National Advisory Committee for Aeronautics, Feb. 26, 1926 (mimeographed), Washington, February 1926, pp. 12, tables, diagrs.

National Advisory Committee for Aeronautics. Technical Notes No. 232. The lateral failure of spars, by Stevens Bromley and Wilham H. Robinson, jr. National Advisory Committee for Aeronautics, March 26, 1926 (mimeographed), Washington, March 1926, pp. 18, ill., diagrs., tables.

- Technical Notes No. 233. N. A. C. A. flight-path-angle and air-speed

recorder, by Donald G. Coleman.

National Advisory Committee for Aeronautics, April 13, 1926 (mimeographed), Washington, April 1926, pp. 11, ill.

- Technical Notes No. 234. An investigation of the characteristics of steel

diaphragms for automatic fuel-injection valves, by W. F. Joachim.

National Advisory Committee for Aeronautics, April 27, 1926 (mimeographed), Washington, April 1926, pp. 22, ill., diagrs.

- Technical Notes No. 235. Propeller design. Practical application of the

blade element theory—I, by Fred E. Weick.

National Advisory Committee for Aeronautics, May 11, 1926 (mimeographed), Washington, May 1926, pp. 14, tables, diagrs.

- Technical Notes No. 236. Propeller design. Extension of test data on a

family of model propellers by means of the modified blade element theory— II, by Fred E. Weick.

National Advisory Committee for Aeronautics, May 18, 1926 (mimeographed), Washington, May 1926, pp. 8, diagrs.

- Technical Notes No. 237. Propeller design. A simple system based on

model propeller test data—III, by Fred E. Weick.

National Advisory Committee for Aeronautics, May 25, 1926 (mimeographed), Washington, May 1926, pp. 18, tables, diagrs.

- Technical Notes No. 238. Propeller design. A simple method for determining the strength of propellers—IV, by Fred E. Weick.

National Advisory Committee for Aeronautics, June 3, 1926 (mimeographed), Washington, June 1926, pp. 11, diagrs., table.

- Technical Notes No. 239. Steam power plants in aircraft, by E. E.

Wilson.

National Advisory Committee for Aeronautics, June 15, 1926 (mimeographed), Washington, June 1926, pp. 30, ill.

- Technical Notes No. 240. The N. A. C. A. CYH airfoil section, by

George J. Higgins.

National Advisory Committee for Aeronautics, June 29, 1926 (mimeographed), Washington, June 1926, pp. 4, ill., diagrs., tables.

- Technical Notes No. 241. Tests of several bearing materials lubricated

by gasoline, by W. F. Joachim and Harold W. Case.

National Advisory Committee for Aeronautics, July 16, 1926 (mimeographed), Washington, July 1926, pp. 19, ill.

- Technical Notes No. 242. Improving the performance of a compression

ignition engine by directing flow of the inlet air, by Carlton Kemper.

National Advisory Committee for Aeronautics, July 27, 1926 (mimeographed), Washington, July 1926, pp. 9, ill., diagr.

- Technical Notes No. 243, The characteristics of the N. A. C. A. M-12

airfoil section, by George J. Higgins.

National Advisory Committee for Aeronautics, Aug. 6, 1926 (mimeographed), Washington, August 1926, pp. 6, diagrs., tables.

- Technical Notes No. 244. Navy propeller section characteristics as used

in propeller design, by Fred E. Weick.

National Advisory Committee for Aeronautics, Aug. 17, 1926 (mimeographed), Washington, August 1926, pp. 7, diagrs.

- Technical Notes No. 245. Report on tests of metal model propellers in

combination with a model VE-7 airplane, by E. P. Lesley.

National Advisory Committee for Aeronautics, Aug. 31, 1926 (mimeographed), Washington. August 1926, pp. 21, ill., diagrs., tahles.

National Advisory Committee for Aeronautics. Technical Notes No. 246. Test of a model propeller with symmetrical blade sections, by E. P. Lesley. National Advisory Committee for Aeronautics, Sept. 25, 1926 (mimeographed), Washington, September 1926, pp. 11, ill., diagrs.

- Technical Notes No. 247, and 24S. The drag of airships, by Lieut.

Clinton H. Havill, U. S. N.

National Advisory Committee for Aeronautics, Sept. 29, Oct. 12, 1926 (mimeographed), Washington, September, October 1926, pp. 26,17, tables.

- Technical Notes No. 249. Effect of protruding gasoline tanks upon the

characteristics of an airfoil, by Eastman N. Jacobs.

National Advisory Committee for Aeronautics, Oct. 29, 1926 (mimeographed), Washington, October 1926, pp. 2, diagrs.

- Technical Notes No. 250. Influence of the orifice on measured pressures,

by Paul E. Hemke.

National Advisory Committee for Aeronautics, Nov. 9, 1926 (mimeographed), Washington, November, 1926, pp. 7, ill., diagrs.

- Technical Notes No. 251. The effect of tube length upon the recorded

pressures from a pair of static orifices in a wing panel, by T. Carroll and R. E. Mixou.

National Advisory Committee for Aeronautics, Nov. 23, 1926 (mimeographed), Washington, November, 1926, pp. 4, ill.

- Technical Notes No. 252. Resistance of a fifteen-centimeter disk, by

James M. Shoemaker.

National Advisory Committee for Aeronautics, Dec. 7, 1926 (mimeographed), Washington December, 1926, pp. 2, ill., diagrs., table.

- Technical Notes No. 253. Wind tunnel standardization disk drag, by

Montgomery Knight.

National Advisory Committee for Aeronautics, Dec. 24, 1926 (mimeographed), Washington, December, 1926, pp. 6, ill.

- See Raethjen, P.: Beschleunigte Flugzeugbewegungen.

National air races. Comments on the races.

Aviation, Vol. 21, No. 13 (Sept. 27, 1926), New York, pp. 545-547, ill.

- Many civilian planes in National air races.

Aviation, Vol. 21, No. 10 (Sept. 6, 1926), New York, pp. 403-407, ill.

- National air race results.

Aero Digest, Vol. 9, No. 4 (Oct., 1926), New York, pp. 284-287, 332, ill.

- National air race week, Sept. 4-11.

Aviation, Vol. 21, No. 9 (Aug. 30, 1926), New York, pp. 358-361.

- The National air races.

Aviation, Vol. 21, No. 1, 12 (July 5, Sept. 20, 1926), New York, pp. 10-13, 500-508, ill.

- National air races, Philadelphia, Sept. 4-11, 1926. Program of events.

List of entries.

Aero Digest, Vol. 9, No. 3 (Sept., 1926), New York, pp. 183, 258-260, ill., map.

- The start of the National air races.

Aviation, Vol. 21, No. 11 (Sept. 13, 1926), New York, pp. 454-158, ill.

- $30,000 in prizes at National air races. Rules issued by Sesquicentennial

committee.

tj. S. Air Services, Vol. 11, No. 7 (July, 1926), Wesbington, D. C, pp. 43-14.

National balloon race. The national balloon race.

Aviation, Vol. 20, No. 19 (May 10, 1926), New York, p. 708.

National Physical Laboratory. See Reif, E. F.: The work of the Aeronautics Department of the National Physical Laboratory. Naval aeronautics. See Maugeri, Franco: Su un tipo di nave porta-aerei. Naval air pilot. See, United States H3'drographic Office: Naval air pilot.

Naval aviation. A history of U. S. naval aviation.

Aviation, Vol. 21, No. 5 (Aug. 2, 1926), New York, pp. 170-179, ill.

Naval warfare. See Ballou, Sidney: Limitations of aircraft in naval warfare.

Navigation. See Ault, J. P.: Navigation of aircraft by astronomical methods.

Navy PN-10. The Navy PN-10 flight.

Aviation, Vol. 21, No. 23 (Dec. 6, 1926), New York, p. 965, ill., map.

Nebly, Frederick R. Ariny Pan-American flyers ready to go.

U. S. Air Services, Vol. 11, No. 12 (Dec. 1926), Washington, D. C, pp. 39-40.

- Italians are here for no idle purpose. U. S. Navy will try to achieve

permanent possession of Schneider Cup this month.

U. S. Air Services, Vol. 11, No. 11 (Nov. 1926), Washington, D. C, pp. 19-20, ill.

- Italy captures the Schneider Cup. Also the records for three, one hundred

and two hundred kilometers.

U. S. Air Service, Vol. 11, No. 12 (Dec. 1926), Washington, D. C„ pp. 17-23, ill.

Negro, Carlo. Elettricità atmospherica.

Milan, Ulrico Hoepli, 1.926, pp. rvi, 299, ill.

Nélis, G. La navigation par appareils à propulsion aérienne au Congo belge.

Hie Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 339-366.

Nelson, Erik. See Thomas, Lowell Jackson: The first world flight. Being the personal narratives of Lowell Smith, Erik Nelson, Leigh Wade, Leslie Arnold, Henry Ogden and John Harding.

Nelson, William. Duralumin and its corrosion.

Aviation, Vol. 21, No. 18 (Nov. 1, 1926), New York, pp. 738-741, ill.

- The protection of duralumin from corrosion.

Aviation, Vol. 21, No. 19 (Nov. 8,1926), New York, pp. 795-799, ill.

Neumann, Kurt. Experiments on self-ignition of liquid fuels.

National Advisory Committee for Aeronautics, Technical Memorandums No. 391, Dec. 16, 1926 (mimeographed), Washington, December 1926, pp. 25, ill., tables. From "Zeitschrift des Vereines deutscher Ingenieure", August 7, 1926.

New, Harry Stewart. Postmaster-General New on air transport problems. Literary Digest, Vol. 90 (Aug. 28,1926), New York, pp. 48-49.

- Transport trails blazed by the air mail lines.

Aero Digest, Vol. 9, No. 2 (Aug. 1926), New York, p. 87, ill.

New York National Guard. The New York National Guard air meet.

Aviation, Vol. 21, No. 1 (July 5, 1926), New York, pp. 18-21, ill. New York-Paris. La tentativa de viaje aéreo Nueva York-París y sus enseñanzas.

Ibérica Año 13, Núm. 650 (30 oct. 1926), Barcelona, pp. 261-262.

- 3,660 miles air bridge: New York to Paris.

Aero Field, Vol. 1, No. 4 (July 1926), London, pp. 80-81, 92, diagr. Newbold, George. The aircraft industry in Hammondsport, N. Y.

Aviation, Vol. 21, No. 24 (Dec. 13, 1926), New York, p. 994. Newell, Joseph S. Bending moments obtained analytically.

Aviation, Vol. 20, No. 16 (Apr. 19,1926), New York, pp. 594-595, diagr. Newspaper carrier. See Albatross The Albatross L72a. A German newspaper carrier with slotted wings.

Nicholas-Beazley. Nicholas-Beazley produces new commercial airplane.

Aviation, Vol. 21, No. 11 (Sept. 13, 1926), New York, pp. 468, 470, ill.

Niessel, A. L'aviation allemande.

L'Aérbphile, 34e année, Nos. 7-8 (ler-15 avril 1926), Paris, pp. 99-101. Nioht flying. Flying at night:

Scient. Amer., Vol. 135 (Nov. 1926), New York, pp. 394-396.

Night flying. Night flying experiments in Europe.

Aviation, Vol. 20, No. 6 (Feb. 8, 1826), New York, pp. 182-183, ill.

- See Whitbeck, J. E.: Lighting for night flying.

Nioht vision. See Beyne, J.: Les modes d'appréciation de la vision nocturne

chez l'aviateur. Niles, Jr., Alfred S. Les essais statiques.

JVAérotechnique (L'Aéronautique, 8me année, No. 83), 4me année, No. 40 (avril 1826), Paris, pp. 136-137.

Nilsen. N.-A. L'aéronautique en Suède. L'industrie et les transports aériens, à la fin de 1925.

L'Aéronautique, 8me année, No. 81 (fév. 1926), Paris, pp. 59-60, ill. Nimbtjs-Martinsyde. Another interesting A. D. C. modification. The "Nim-bus-Martinsyde."

Flight, Vol. 18, No. 22 (June 3, 1926), London, pp. 316-317, ill. 1925. Aeronautics in 1925.

Engineer, Vol. 141, Nos. 3653, 3654 (Jan. 1, 8, 1926), London, pp. 10-12, 32-25, 44, ill.

- Aircraft year book 1925.

New York, Published by the Aeronautical Chamber of Commerce, Inc., pp. 316, ill.

1925. L'année aéronautique 1925.

L'Aërophile, 34e année, Nos. 1-2 (ler-16 jan. 1926), Paris, pp. 2-6, ill.

- On aviation in 1925.

The Aeroplane, Vol. 30, Nos 1, 4, 5 (Jan. 6, 27, Feb. 3, 1920), London, pp. 1-6, 53-56, 105-108.

- See Besançon, Georges: L'année aéronautique 1925.

1926. See Martinot-Lagarde, C. L'aviation au début de 1926. Les groupes motor-propulseurs.

Nistri, A. Nuovi risultati ottenuti nel rilevamento aerofotogrammetrico a mezzo del fotocartografo "Nistri."

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotencica, Numero straordinario, Pisa, 1926, pp. 399-416, ill.

- La teoria della restituzione ed il fotocartografo Nistri.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 381-398, ill.

Noack, W. G., and A. R. Weyl. Riesenflugzeuge.

Berlin, Richard Carl Schmidt & Co., 1926, pp. 520, ill.

Nobile, Umberto. II dirigible Italiano nelle sue più recenti realizzazioni : Il tipo "N". (Conferenza tenuta a Mosca il 27 gennaio 1926.) Rivista Aeronautica, Anno 2, N. 4 (aprile 1926), Roma, pp. 40-53, ill.

- Scopo delle esplorazioni polari.

Annali dei Lavori Pubblici, Voi. 63, N. 12 (Nov. 1925), Rome, pp. 969-993, ill.

- Sullo sviluppo delle construzioni dei dirigibili in Italia.

Rivista Aeronautica, Anno 2, N. 2 (feh. 1926), Roma, pp. 1-29, ill.

- The trend of airship construction in Italy.

Hie Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 279-304, ill.

- Umberto Nobile ed il volo transpolare.

L'Aerotecnica, Voi. 6, N. 3 (mag.-giugno 1926), Pisa, pp. 167-176, ill.

- Il volo transpolare.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana-di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 37-63, Ills., maps.

Nomenclature. Nomenclature for aeronautics, by National Advisory Committee for Aeronautics.

National Advisory Committee for Aeronautics, Report No. 240,1826, Washington, Government Printing Office, 1826, pp. 77, ill.

Nomenclature. See National Advisory Committee for Aeronautics: Nomenclature for aeronautics.

- See Scott, T.: Winged words you should know.

Noorduyn, R. B. C. Propellers and three-engined airplanes.

U. S. Air Services, Vol. 11, No. 12 (Dec. 1926), Washington, D. C, p. 34.

Norge. The airship Norge flies across the Arctic.

Aviation, Vol. 20, No. 22 (May 31, 1926), New York, pp. 824-826, ill., map.

- The flight of the airship Norge.

Aviation, Vol. 20, No. 17 (Apr. 26,1926), New York, pp. 624-626, ill., map.

- "Norge" crosses Pole in 71-hour flight.

TJ. S. Air Services, Vol. 11, No. 6 (June 1926), Washington, D. C, pp. 24-31, ill., map.

- The polar airship flight.

Illustrated London News, Vol. 168, No. 4539 (April 17,1926), London, p. 715, ill.

- Radio equipment on the airship Norge.

Aviation, Vol. 20, No. 24 (June 14, 1926), New York, pp. 907-908, ill.

- See Almagià, Roberto: L'importanza geografica della trasvolata polare

del "Norge."

- See Maya, Jean: L'expédition du "Norge."

- See North Pole: La conquête du pôle nord.

- See North Pole: L'impresa polare.

- See Panetti, M.: Alcune note tecniche di confronto sulle caratteristiche del "Norge."

- See Polar flight: Amundsen's polar flight. Airship Norge's successful

journey over the North Pole.

- See Quattrini, Antonio: Col. "Norge" sulla via del polo.

- See Wireless: Wireless equipment of the "Norge" airship.

North, H. Flugwetterberatung.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 19. Heft (14. Okt. 1926), München, pp. 409-410. North, J. D. Aircraft performance.

Aircraft Engineer, suppl. to Flight, Vol. 18, Nos. 8,12,17,21, 25,30,34,43,47 (Feh. 2*6, Mar. 25, Apr 29, May 27, June 24, July 29, Aug. 26, Oct. 28, Nov. 26, 1926), London, pp. HOa-llOc, 178c-178f, 260d-260g, 30Se-308g, 362a-362d, 464e-464g, 532a-532e, 702a-702d, 764e-764g.

- The Paris aero show. Some impressions.

Flight, Vol. 18, No. 52 (Dec. 30,1926), London, pp. 866a-866g.

North Pole. All aboard for the North Pole.

Literary Digest, Vol. 89 (June 5, 1926), New York, pp. 40-46, ill.

- Byrd et Bennett ont survolé le pôle nord.

LAêrophile, 34e année, Nos. 9-10 (ler-15 mai 1926), Paris, p. 136.

- La conquête de pôle nord.

La Nature, S,uppl., 54e année, No. 2721 (29 mai 1926), Paris, pp. 169-170, ill.

- Crowding the North Pole.

Literary Digest, Vol. 89 (May 22, 1926), New York, pp. 8-11, ill., map.

- The flights over the Pole.

Aero Digest, Vol. 8, No. 6 (June 1926), New York, pp. 327, 393, 394, ill.

- L'impresa polare.

Rivista Aeronautica, Anno 2, N. 6 (giugno 1926), Roma, pp. 3-13, ill.

- The 1926 American polar flight.

Aviation, Vol. 20, No. 1 (Jan. 4,1926), New York, pp. 8-9, map.

- North Pole marathon.

Independent, Vol. 116 (June 5, 1926), Boston, pp. 649-660, ill., map.

- On North Pole expeditions.

The Aeroplane, Vol. 30, No. 15 (Apr. 14,1926), London, pp. 385-386,

North Pole. To the North Pole by aeroplane. Commander Byrd entertained at the Royal Aero Club.

Flight, Vol. 18, No. 22 (June 3,1926), London, pp. 318-319, ill.

- See Almagià, Roberto: L'importanza geográfica della trasvolata polare del

"Norge."

- See Amundsen: Amundsen's North Pole airship.

- See Amundsen, Roald Engelbregt Gravning: La expedición polar Amundsen.

- See Amundsen, Roald Engelbregt Gravning: Den f0rste flukt over

Polhavet.

- See Amundsen, Roald Engelbregt Gravning: II mio volo polare fino a

88° lat. Nord con relazioni di H. Riiser-Larsen, L. Dietrichson, F. Ramm, J. Bjerknes.

- See Amundsen-Ellsworth: The Amundsen-Ellsworth polar expedition.

- See Bennett, Floyd: Our flight over the North Pole.

- See Clarke, N. R.: Are we over the Pole?

- See Davis, W.: Conquest of the North Pole.

- See M., J.: Amundsen au Pôle Nord.

- See Mittelholzer, Walter: Im Flugzeug dem Nordpol entgegen. Junkers-

sche Hilfexpedition für Amundsen nach Spitzbergen 1923.

- See Nobile, Umberto: II volo transpolare.

- See Nobile, Umberto: Scopo delle esplorazioni polari.

- See Nobile, Umberto: Umberto Nobile ed il volo transpolare.

- See Polar flight.

Northwest passage. See Mackaye, B.: New northwest passage.

NoviLLE, G. O. Cold weather engine starting.

Aero Digest, Vol. 9, No. 6 (Dec. 1926), New York, p. 440, ill. Ntjngesser, Charles. See Thome, Clifford: Nungesser dreams great things for the future.

O

Ober, S. Airplane propeller interference study.

Tech Engineering News, Vol. 7, No. 1 (Mar. 1926), Cambridge, pp. 12-13, ill.

Ocean flying. See Rumpier, R. : Das Trans-Ozeanflugzeug. Oddone, Emilio. Il vento e le isobare vanno soggette al fenomento della rifrazione?

Eivista Aeronáutica, Anno 2, N. 9 (sett. 1926), Roma, pp. 123-140, ill.

Offermann, E. Riesenflugzeuge.

Berlin, Rich. Carl Schmidt & Co., 1927, pp. 618, ill.

- Der Streckenflug von Kegel im diesjährigen Rhön-Segelflug-Wettbewerb.

Luitweg, Jahrg. 1926, Heft 17 (10 Sept. 1926), Berlin-München, pp. 176-177, map.

- Vom Fliegen mit Riesenflugzeugen.

Luftweg, Jahrg. 1926, Heft 16, 17 (26 Aug. 10 Sept. 1926), Berlin-München, pp 169-170, 178-180.

Ogden, Henry. See Thomas, Lowell Jackson: The first world flight. Being the personal narratives of Lowell Smith, Erik Nelson, Leigh Wade, Leslie Arnold, Henry Ögden, and John Harding.

Oils. See Heinlein, Fritz: Experimental investigation of the physical properties of medium and heavy oils, their vaporization and use in explosion engines.

Orientation. See Perlewitz, P. : Ortsbestimmungen in der Luft und auf See.

Ornithopters. See Alayrac, A. : Étude théorique du vol par battements.

Osborn, Earl D. Ter/ycars of civil aviation.

Aviation, Vol. 21, No. 5 (Aug. 2,1926), New York, pp. 214-216.

Ostia. See Tarantini, Lello: Un progetto"per l'aeroporto civile di Ostia.

Outram, H. W. S. The inspection of civil aircraft.

Ille Congrès, International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 314-338.

- The strength testing and inspection of aeronautical materials.

Ille Congrès International do la Navigation Aérienne, T. 2, Paris, [1925], pp. 625-576, ills., tabls.

Ovington, Earle. My ideal sportplane.

Aivation, Vol. 20, No. 17 (Apr. 26, 1926), New York, pp. 637-638.

Ower, E., and F. C. Johnson. The design of Pitot-Static tubes.

Aeronautical Research Committee, Reports and Memoranda, No. 981 (Ae. 194), London, H. M. Stationery, pp. 12, ill. (C. 1. Accessories Instruments, 88 and a.—T. 2108 and a.)

Ower, E. See Simmons, L. F. G., and E. Ower: Note on the application of the vortex theory of aerofoils to the prediction of downwash.

Oxford Arctic expedition. See Binney, George: With seaplane and sledge in the Arctic.

Oxygen. See Beyne, J.: Les bases physiologiques du rélage des appareils à inhalation d'oxygène utilisés dans l'aéronautique.

- See Beyne, Mazer, et Grenier: Inhalation d'oxj'gène pour vol à haute

altitude.

- See Garsaux: Les appareils à oxygène liquide.

- See Garsaux: L'approvisionnement des avions en oxygène.

Ozeroff, G. A. The Central Aero-Hydrodynamical Institute.

Transactions of tho Central Aero-Hydrodynamical Institute, No. 30, U. S. S. R. Scientific-Technical Department of the Supreme Council of Natioual Economy, No. 183, Moscow, 1927, pp. 97, ill.

P

Pacific Ocean. See Frost, H. H., and G. Marvin: Pacific airways; a menace or an asset in relations between the United States and the Orient?

Packard. See Gillette, L. S.: Low weight and compactness feature Packard aero engines.

Page, W. Laurance. On the control of airplanes at low speed.

Aviation, Vol. 20, No. 22 (May 31, 1926), New York, pp. 829-831.

Painlevé, Paul. See Laine, André: L'aviation pour tous. Preface de M. Paul Painlevé.

Pan-American flight. Air Corps planes to start on Pan-American flight. Aviation, Vol. 21, No. 26 (Dec. 27, 1925), New York, pp. 1072-1073, ill., map.

- Official route Army Air Corps Pan-American flight.

U. S. Air Services, Vol. 11, No. 11 (Nov. 1926), Washington, D. C, pp. 33-34.

Pander. The new Pander two-seater biplane.

The Aeroplane, Vol. 30, No. 9 (Mar. 3, 1926), London, pp. 234-236, ill.

- The Pander light biplane. A school two-seater with 45 H. P. Anzani

engine.

Flight, Vol. 18, No. 13 (Apr. 1, 1926), London, pp. 192-194, ill., diagr. National Advisory Committee for Aeronautics, Aircraft Circulars, No. 1, Washington, March 1926, pp. 5, ill. From "Flight," April 1,1926.

- The Pander plane.

Aero Digest, Vol. 9, No. 6 (Dee. 1926), New York, p. 464, diagr.

- The Pander type E sportplane.

Aviation, Vol. 20, No. 18 (May 3, 1926), New York, pp. 668, 670, ill.

Paneth, Fritz, and Kurt Peters. Ueber die Verwandlung von Wasserstoff in Helium.

Berichte der deutschen Chemischen Gesellschaft, 59. Jahrg., Nr. 8 (15. Sept. 1926), Berlin-Leipzig, pp. 2039-2048.

Paneth, Fritz. See Hydrogen: The reported conversion of hydrogen into helium.

Panetti, M. Alcune note tecniche di confronto sulle caratteristiche del "Norge."

L'Aerotecnica, Voi. 6, N. 3 (mag.-guigno 1926), Pisa, pp. 183-188.

- Contributo ai problemi smT assetto trasversale dell' aeroplano. Azione

di deriva sulla velatura portante.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 284-292, ill.

Panhard. See Engines: Moteur d'aviation sans soupapes Panhard 450cv. type V. K. 12 L.

Parachutes. Explaining a parachute stunt.

The Aeroplane, Vol. 31, No. 9 (Sept. 1, 1926), London, p. 276, ill.

- Light on the parachute question.

The Aeroplane, Vol. 30, No. 6 (Feb. 10, 1926), London, pp. 136-140.

- Like dropping into a feather bed : Parachutes for the R. A. F.

Illustrated London News, Vol. 167, No. 4498 (July 4, 1925), London, pp. 16-17, ill.

- The new R. A. F. parachutes: "Pull-off " or "Jump-off."

Illustrated London News, Vol. 168, No. 4535 (March 20,1926), London, pp. 501-503, ill.

- Le parachute sauveteur dans l'aviation américaine.

L'Aéronautique, Sine année, No. 90 (nov. 1926), Paris, pp. 361-364, ill. •- See Holt, H. S.: Civilian and airship parachutes.

- See Landing: Parachute carries airplane to earth.

- See Landing: Plane is safely landed by giant parachute.

- See Pearson, J. : Notes on the parachute.

- See Salvatore: The age of flight: Aviation scenes in three continents.

Paris. Le dixième Salon de l'Aéronautique.

L'Aéronautique, 8me année, No. 91 (déc. 1926), Paris, pp. 394-422, ill.

- See Bureau Veritas, Paris: Registre aéronautique. No. 2, 1926.

- See Ernst, D.: X. Pariser Aero-Salon.

- See M., C. R.: Le XXXe Congrès de l'Association Technique Maritime

et Aéronautique.

- See North, J. D. : The Paris aero show. Some impressions.

Paris Aero Show. The Paris aero show 1926.

Flight, Voi. 18, Nos. 48, 50-51 (Dec. 2, 16-23, 1926), London, pp. 775-791, 823-835, 843-855, ill.

- The Paris aero show 1926. Aero engines at the salon.

Flight, Vol. 18, No. 48 (Dec. 9, 1926), London, pp. 802-813, ill.

Paris-Téhéran. Paris-Téhéran-Paris. 15,000 kilomètres par trois avions au fort de l'hiver.

L'Aéronautique, Sme annéo, No. 81 (fév. 1926), Paris, pp. 50-53, ill.

Parker, James Southworth. See United States Congress. Conference Committees, 1925-1926 : Air commerce act of 1926 . . . Conference report. To accompany S. 41. Parker, R. C. The aircraft bubble sextant, Type A.

Journal of the American Society of Naval Engineers, Vol. 38, No. 2 (May 1926), Washington pp. 301-317, ill.

Parodi, F. Sull'analisi dell'emotività nell'aviatore.

Rivista Aeronautica, Anno 2, N. 11 (nov. 1926), Roma, pp. 68-73.

Pasqualini, C. Sulla ripartizione della portanza e le caratteristiche di un' ala di lunghezza finita.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 326-338.

Pastore, G. R. Aeronautica militare. Italia. L'aviazione nella battaglia terrestre.

Rivista Aeronautica, Anno 2, N. 2 (Feb. 1926), Roma, pp. 61-82. Patent Law. Amendment of International Patent Law.

nie Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 39-41.

Patents. Patentsammlung des "Flugsport."

Frankfurt a. M., Verlag "Flugsport," pp. 220, ill.

Paths. See Baumhauer, A. G. von: Photographic time studies of airplane paths.

Paton, C. R., and Carlton Kemper. Power output and air requirements of a two-stroke cycle engine for aeronautical use.

National Advisory Committee for Aeronautics, Report No. 239, Sept. 26 1926, Washington, Government Printing Office, 1926, pp. 11, ill., diagrs.

Patrick, Mason M. Air plans ignored, says General Patrick.

TJ. S. Air Services, Vol. 11, No. 2 (Feb. 1926), Washington, D. C, pp. 25-26.

- Annual report of the Chief of Air Corps.

Aviation, Vol. 21, No. 23 (Dec. 6, 1926), New York, pp. 950-951.

- Would have Air Corps similar to Marine Corps.

TJ. S. Air Services, Vol. 11, Nos. 3-6 (Mar.-June 1926), Washington, D. C, pp. 27-33, 35-39, 44-49, 44-50, ill.

- »See Hamilton Rice Expedition: The hydroplane of the Hamilton Rice

Expedition, 1924-1925.

Pearson, J. Notes on the parachute.

Aviation, Vol. 21, No. 16 (Oct. 18, 1926), New York, pp. 670-671, ill.

Pegna, Giovanni. Un aspetto del divenire dell' aeronautica. Le artiglierie di grosso calibro sopra piattaforme aeree.

Rivista Aeronautica, Anno 2, N. 1 (gen. 1926), Roma, pp. 16-49, ili.

Penfield, W. S. Into the heart of Colombia by hydroplane.

Bulletin Pan American Union, Vol. 60 (Oct. 1926), Washington, D. C, pp. 990-1002, ill.

Perkins, Randolph. America needs aircraft.

Aero Digest, Vol. 8, No. 6 (June 1926), New York, pp. 329, 390-391.

Perlewitz, P. Ortsbestimmungen in der Lift und auf See.

Luftweg, Jahrg. 1926, Heft 6 (25 März 1926), Berlin-München, pp. 62-64.

Perrin, H. E. Air transport in the strike.

Flight, Vol. 18, No. 20 (May 20, 1926), London, pp. 295-297, ill.

Persia. »See Mittelholzer, Walther: Persienflug.

Peters, Kurt. »See Hydrogen: The reported conversion of hydrogen into helium.

- »See Paneth, Fritz, and Kurt Peters: Uber die Verwandlung von Wasserstoff in Helium.

Peterson, C. G. Three-engined planes for air transport.

Aviation, Vol. 21, No. -9 (Aug. 30, 1926), New York, pp. 354-357, ill.

Petijean, L. Sur la thermodynamique des surfaces de discontinuité atmosphérique.

C. R. Acad. Sci., T. 183, No. 18 (3 Nov. 1926), Paris, pp. 755-757.

Petracalvina, L. L'aviazione nella difesa aerea territoriale.

Rivista Aeronautica, Anno 2, N. 3 (marzo 1926), Roma, pp. 16-23.

Peyriller, E. Un grand débat aéronautique à la Chambre des Députés. L'Aérophile, 34e année. Nos. 11-12 (ler-15 juin 1926), Paris, pp. 166-168.

Pfisteb, E. Der Bau des Flugzeuges. Teil 1, Allgemeiner Aufbau und die Tragflächen.

Berlin-Charlottenhurg, Verlag von C. J. E. Volckmann Neehf. G. m. b. H., 1926, pp. 48, ill;

Philadelphia. Aerial transportation symposium held at Philadelphia.

Engineering News-Record, Vol. 96, No. 13 (April 1, 1926), New York, p. 640.

- See National air races: National air races, Philadelphia, Sept. 4-11, 1926.

- See Sesquicentennial: Aero exhibits at the Sesqui exhibition.

Photogrammetry. See Cassinis, G.: Presente e avvenire della fotogrammetria.

- See Santoni, E.: Fotogrammetria aerea col metodo Santoni.

- See Spieweck, Bruno: Photogrammetrische Start- und Landungsmessungen.

Photography. Aerial photographic survey of international waters. Advantages in time, cost, detail and accuracy in mapping Rainy Lake district by amphibian plane.

Engineering News-Record, Vol. 97, No. 11 (Sept. 9,1926), New York, p. 431.

- Air Service aerial photographic activities.

Aviation, Vol. 20, No. 19 (May 10,1926), New York, pp. 716-718, ill.

- The Eagle air camera.

The Aeroplane, Vol. 31, No. 19 (Nov. 10, 1926), London, pp. 608-610, ill.

- Flying dark rooms turn out pictures in the air.

Pop. Mech., Vol. 46 (July 1926), Chicago, pp. 58-59, ill.

- How air flash-light photographs are made.

Aviation, Vol. 20, No. 10 (Mar. 8, 1926), New York, p. 327.

- New aerial camera pierces smoke.

Pop. Mech., Vol. 46 (Nov. 1926), Chicago, p. 761.

I ; The new Army Air Corps K-8 camera.

U. S. Air Services, Vol. 11, No. 9 (Sept. 1926), Washington, D. C, p. 47, ill.-;

- See Eagle: The "Eagle" aerial camera. A new British electrically

operated outfit.

- See Guerra, Ugo: Sulla possibilità di trasmissione di schizzi e disegui

da bordo di un aeroplano a terra a mezzo della radiotelegrafia.

- See Jacobs, A. M.: Steady, please, below.

—— See King, L. N. F. I.: Graphical methods of plotting from air photographs.

- See Labussière,|G. : Matériels nouveaux de photographie aérienne.

- See Laws, F. C. V. : The application of air photography to surveying.

- See Stringer, H. B.: Air photograph apparatus.

- See Surveying: The development of aerial surveying.

- See Surveying: How aerial surveys are made: Mapping by air photography in British Guiana and Rhodesia.

- See Thouvenot, A. : La restitution de photographies aériennes.

- See Volla, Fernando: Schema di organizzazione di un servizio aerofotografico militare.

- See Weymouth, F. E. : The Brock process of making topographic surveys

from the air.

- See Winterbotham, H. S. L. : General principles of photographic surveying.

Physics. See Wimperis, H. E. : The relationship of phj'sics to aeronautical

research.

Phtsioloqt. See Garsaux, Malassez et Toussaint: Sur le vertige de rotation.

Pierce, R. F. R. Supercharged aero engines.

Journ. Boy. Aer. Soc, Vol. 30, No. 190 (Oct. 1926), London, pp. 615-618.

Pierson, R. K. Airscrew tip speeds.

Aircraft Engineer, suppl. Flight, Vol. 18, No. 30 (July 29, 1926), London, pp. 464c-464e, diagr.

Pigeons. See Duvigneaud, A. Rochon: Enquête sur l'orientation du pigeon voyageur et son mécanisme.

Pignot, André. Recherches sur l'inflammabilité des mélanges carbures.

Service Technique de l'Aéronautique, Bulletin Technique, No. 34, Mai 1926, France, pp. 51, ill., tables, diagrs.

Pilot balloons. See Gurney, F. J., and L. H. G. Dines: Revolving pilot balloons. Pilots. How to become a service pilot.

Flight, Vol. 18, No. 5 (Feb. 4, 1926), London, pp. 63-64.

- Instruction sur les conditions de remboursement partiel du prix du brevet

de pilote d'avion de tourisme aux jeunes gens titulaires de ce brevet.

L'Aérophile, 34e année, Nos. 1-2 (ler-16 janv. 1926), Paris, p. 12.

- See Di Nola, A.: Igiene dell'aviazione.

- See Ragg, R. L. : Experimental flying from the pilot's point of view.

Pinking. The theory of "Pinking."

Engineering, Vol. 121, No. 3151 (June 4, 1926), London, 665-666.

Pinsard, Amand. See Blanchet, Georges: Aviateurs contemporains. Amand Pinsard.

Pippard, A. J. Stjtton, and P. Field Foster. The distortion of a stiff-jointed plane polygonal frame under loads applied in its plane.

Aeronautics, Tech. Bept. Aeronautical Eesearch Committee, 1924^-25, Vol. 2, London, 1926, pp. 587-913, diagr.

Pippard, A. J. Sutton, and J. F. Baker. ' An experimental investigation into the properties of certain framed structures having redundant bracing members.

Aeronautics, Tech. Bept. Aeronautical Eesearch Committee, 1924-25, Vol. 2, London, 1926, pp. 611-635, ill., tabls., diagr.

Pippard, A. J. Sutton, and G. H. W. Clifford. An experimental investigation into the properties of certain framed structures having redundant bracing members. Report No. 4.

Aeronautical Eesearch Committee, Eeports and Memoranda, No. 1020 (Ae. 210), Jan., 1926, London, 1926, pp. 11, tabls., diagr.

Pippard, A. J. Sutton. The experimental stress analysis of frameworks with special reference to the problems of airship design.

Journ. Eoy. Aer. Soc, Vol. 30, No. 185 (May 1926), London, pp. 282-331, JJ1.

- Stresses in a stiff-jointed polygonal frame under a system of parallel

loads. Part II.

Aeronautics, Tech. Bept. Aeronautical Eesearch Committee, 1924-25, Vol. 2, London, 1926, pp. 581-586, diagr.

Pistolesi, Enrico. Considerazioni sull' "Autogiro."

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Vol. 6, N. 6 (ottobre 1926), Pisa, pp. 409-423, ill.

- I concetti e i metodi della modema aerodinamica.

L'Aerotecnica, Giornale ed Atti dell' Associazione Italiana di Aerotecnica, Numéro straordinario, Pisa, 1926, pp. 93-121, ill.

Pistons. See Engines: Piston temperatures in high-speed petrol engines.

- See Gibson, A. H. : Piston temperatures and heat flow in high-speed petrol

engines.

Pitcairn Fleetwing. The Pitcairn Fleetwing.

Aviation, Vol. 20, No. 20 (May 17, 1926), New York, pp. 753-756, ill.

Pitcairn Orowing. The Pitcairn Orowing. A three-seater sport plane with OX-5 engine.

Aviation, Vol. 21, No. 21 (Nov. 22, 1926), New York, pp. 882, 884, ill., diagr.

Pitcairn Sesqui-wing. The Pitcairn Sesqui-wing.

Aviation, Vol. 21, No. 19 (Nov. 8,1926), New York, pp. 802-805, ill. Pitois. La propagande aéronautique dans les expositions officielles française.

HJe Congrès International de la Navigation Aérienne, T. 3, Paris, [1925], pp. 190-197. Pitot tubes. See Ower, E., and F. C. Johanson: The design of pitot-static tubes. Planiol, A. See Huguenard, E., A. Magnan, et A. Planiol: L'accélérographe H. M. P. son application à la mesure des accélérations en vol.

- See Huguenard, E., A. Magnan, et A. Planiol: Les appareils à fils chauds

leur application à l'étude des mouvements atmosphériques.

- See Huguenard, E., A. Magnan, A. Planiol: Nouvelles expériences sur les

conditions mécaniques du vol des avions.

Plant disease. See Stakman, E. C: Airplanes in plant disease investigations.

Pleines, W. Warnvorrichtung gegen das Uberziehen von Flugzeugen. Zeitschr. Ver. deutsch. Ing., Bd. 70, Nr. 34 (21 Aug. 1926), Berlin, p. 1136.

Plessis, J. du. Les grandes dirigeables dans la paix et dans la guerre. Leur technique.

Paris, Librairie Pion, 1926, pp. 217, ill.

Pochhammer, B. Die fahrtechnische Lehre aus dem Schiffbruch der "Shenandoah."

Luftweg, Jahrg. 1926, Heft 12 (25. Juni 1926), Berlin-München, pp. 125-127, ill.

- Flugzeug, Prallschiff oder Starrschiff? Oder Flugzeug,

Prallschiff und Starrschiff.

Luftweg, Jahrg. 1926, Heft 22 (25. Nov. 1926), Berlin-München, pp. 228-229.

- Gedanken für die Zukunst der deutschen Luftschifftechnik.

Luftweg, Jehrg. 1926, Heft 4 (25. Feb. 1926), Berlin-München, pp. 37-38.

- Technische Betrachtungen über den Verlust des V. St. S. "Shenandoah."

Luftweg, Jahrg. 1926, Heft 24 (25. Dez. 1926), Berlin-München, pp. 247-248.

Poincaré, Léon. Carburation et carburateurs.

Paris, Gauthier Villars et Cie., 1926, pp. 284, ill.

- Les thermomètres à distance.

L'Aérotechnique (L'Aéronautique, 8me année, No. 88), 4me année, No. 45 (sept. 1926), Paris, 300-304, ill.

Poland. L'aéronautique polonaise.

l'Aéronautique, 8me année, No. 84 (mai 1926), Paris, pp. 177-182, ill. Polar flight. Amundsen's polar flight. Airship Norge's successful journey over the North Pole.

Flight, Vol. 18, No. 20 (May 20, 1926), London, pp. 293-294, ill.

- The Polar flights. Commander Byrd's voyage on the aeroplane Josephine

Ford, 9 May 1926, 6h 50" to 16b 20-> G. M. T. The voyage of the Norge, May 11, 8" 55-" to May 14, 8" 0-.

Geographical Journal, Vol. 68, No. 1 (July 1926), London, pp. 62-72.

- See Almagià, Roberto: L'importanza geografica della trasvolata polare

del "Norge."

- See Morley-Jenkins, F.: The mystery of the first polar flight.

- See Nobile, Umberto. Umberto Nobile ed il volo transpolare.

- See North Pole.

Polar flight. See Verduzio, R.: Sulla possibilità della trasvolata polare del

dirigibile "N. 1." Pond, Charles McH. Cutting fuel cost in air transport.

Aviation, Vol. 20, No. 11 (Mar. 15,1926), New York, p. 368.

■-- The location of terminal landing fields.

Aviation, Vol. 11, No. 2 (Jan. 11, 1926), New York, p. 56.

- Marine principles in aircraft propulsion.

Aviation, Vol. 20, No. 8 (Feb. 22, 1926), New York, p. 253.

Pope, Robert Anherson. The all-American Arctic expedition. Aviation, Vol. 20, No. 16 (Apr. 19, 1926), New York, p. 584, ill.

Potjzet, Edouard. Rapport fait au nom de la Commission de. la marine militaire chargée d'examiner le projet de loi sur le statut naval (organization de l'aéronautique maritime).

Paris, Imprimerie de la Chambre des députés, Martinet, 1926, pp. 150. Chambre des députés. 13 legis]., sess. de 1926, No. 3079; annexe au procés-verba) ... 29 juin 1926.

Powell, C. H. An economy chart for airplanes. Effect of wing area on speed, economy and speed range shown diagramatically.

Aviation, Vol. 21, No. 24 (Dec. 13, 1926), New York, pp. 996-998, diagr.

Powell racer. The Powell racer.

Aviation, Vol. 20, No. 1 (Jan. 4, 1926), New York, pp. 12-14, ill., diagr.

Power. See Leyat, Marcel: L'aéropropulsion.

Power plants. Aircraft power plants. Part I—Aircraft engines, by Edward T. Jones, and Robert Insley, Part II—Propellers, by Frank W. Caldwell. Part III—Water ballast recovery, by Robert F. Kohr.

New York, The Ronald Press Company, 1926, pp. xiv, 208, ill., diagrs.

Prager, W. Nomographische Rechentafeln für Rohrberechnung.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 8. Heft (28. April 1926), München, p. 167, ill.

Prall. See Rotzoll: Etwas über das Prall-Luftschiff.

Prall, Anning S. Whitewash in the air.

Aero Digest, Vol. 8, No. 4 (Apr. 1926), New York, pp. 183-184, 235. Prandtl. See Toussaint, A., et E. Carafoli: Sur la théorie des ailes susten-tatrices.

Prandtl, Ludwig. Application of the "Magnus Effect" to the wind propulsion of ships.

National Advisory Committee for Aeronautics, Technical Memorandums No. 367, June 21, 1926 (mimeographed), Washington, Juno 1926, pp. 37, ill. From "Die Naturwissenschaft," Vol. 13, June 2,1925.

- Erste Erfahrungen mit dem rotierenden Laboratorium.

Die Naturwissenschaften, 14. Jahrg., Heft 19 (7. Mai 1926).

- First experiences with the rotating laborator}"-.

National Advisory Committee for Aeronautics, Technical Memorandums No. 372, July' 29, 1926 (mimeographed), Washington, July 1926, pp. 8. From "Naturwissenschaften," May 7,1926 (Vol.14).

Prandtl, Ludwig, and O. Tietjens. Kinetographic flow pictures.

National Advisory Committee for Aeronautics, Technical Memorandums No. 364, May 29, 1926 (mimeographed), Washington, May, 1926, pp. 6, ill. From Die Naturwissenschaften, Vol. 13.

Prandtl, Ludwig. Tasks of air flow research.

National Advisory Committee for Aeronautics, Technical Memorandums No. 365, June 7, 1926 (mimeographed), Washington, June 1926, pp. 11. From Die Naturwissenschaften, Vol. 14, No. 16.

Pratt, Hazen C. Airplane arresters and catapults.

Aviation, Vol. 21, No. 4 (July 26,1926), New York, pp. 122-124.

- Experiments with an airplane arrester.

Aviation, Vol. 20, No. 10 (Mar. 8,1926), New York, pp. 328-330, ill.

Pkatt and Whitney engine. Pratt and "Whitney engine performs admirably from coast to coast and back again.

Ü. S. Air Services, Vol. 11, No. 12 (Dec, 1926), Washington, D. C, pp. 41-42, ill.

- The Pratt and Whitney Wasp engine.

Aviation, Vol. 20, No. 7, 22 (Feb. 15, May 24, 1926), New York, pp. 228, 230, 827-S28, ill.

Prentice, James. Increase in the efficiency of aircraft engines.

U. S. Air Services, Vol. 11, No. 10 (Oct. 1926), Washington, D. C, pp. 38-40.

Pressure. See Münk, Max Michael: The spacing of orifices for the measurement of pressure distribution. ——■ See Hemke, Paul E. : Influence of the orifice on measured pressures.

Pricolo, Francesco. La guerra nell' aria.

Rivista Aeronautica, Anno 2, N. 5 (mag. 1926), Roma, pp. 63-72.

Pris, R. Résistance minimum des ailes à génératrices rectilignes.

L'Aérophile, 34e année, Nos. 1-2 (ler-15 janv. 1926), Paris, pp. 13-17, ill., diagrs.

Pritcharu, John Laurence. The book of the aeroplane.

London, Longmans, Green and Co., Ltd., 1926, pp. 255, ill. Prizes. See Daniel Guggenheim Fund: The Daniel Guggenheim Fund for the promotion of aeronautics . . .

Pröll, A. Die Startstrecke bei Flugzeugen.

Zeitschr. Flugt. Motorluftscb., 17. Jahrg., 15. Heft (14. Aug. 1926), München, pp. 316-322, ill.

- Take-off distance for airplanes.

National Advisory Committee for Aeronautics, Technical Memorandums No. 3S1, Sept. 30, 1926 (mimeographed), Washington, September 1926, pp. 23, ill. From Zeitschrift für Flugtechnik und Motorluftschiffahrt August 14, 1926.

Progress. Progress in aeronautics.

Mechanical Engineering, Vol. 48, No. 12 (Dec. 1926), New York, pp. 1432-1434.

Propellers. Further discussion on metal propellers.

Aviation, Vol. 21, No. 26 (Dec. 27, 1926), New York, pp. 1082-1083.

-- Metal airscrews. Comparative flying tests of Fairey-Reed on D.H. 9.

Flight, Vol. 18, No. 17 (Apr. 29, 1926), London, p. 260, ill.

- Metal v. wood propellers.

Aviation, Vol. 21, No. 22 (Nov. 29, 1926), New York, pp. 913-914.

- The new Short all-metal airscrew.

Flight, Vol. 18, No. 52 (Dec. 30, i926), London, pp. 867-868, ¡11.

- Swivelling propeller.

Scient. Amer., Vol. 134 (May 1926), New York, p. 354.

- See Akimoff, N. W. : Alcune idee sull' elica propulsiva.

- See Bristow, Whiston A.: The design and construction of metal propellers for aircraft.

- See Corrigan, J. F.: Why curved propeller blades? A straightforward

explanation of a practical point.

- See Durand, William Frederick, and E. P. Lesley: Comparison of tests on

air propellers in flight with wind tunnel model tests on similar forms.

- See Durand, William Frederick: Interaction between air propellers and

airplane structures.

- See Durand, William Frederick: Tests on thirteen Navy type model

propellers.

—— See Englesson, Elov: The Kaplan and propeller turbines and the cavitation problem.

- See Glauert, Hermann: The analysis of experimental results in the windmill brake and vortex ring states of an airscrew.

- See Glauert, Hermann: The elements of aerofoil and airscrew theory.

Propellers. See Glauert, Hermann: On the contraction of the slipstream of an airscrew.

- See Haw: Der Haw-Metallpropeller.

- See Jones, E. T., R. Insley, F. W. Caldwell and R. F. Kohr: Aircraft

power plants, Part I: Aircraft engines by E. T. Jones and R. Insley. Part II: Propellers by F. W. Caldwell. Part III: Water ballast recovery by R. F. Kohr.

- See Kawada, Sandi: Theory of airscrews.

- See Lamé, M. : Note sur les hélices aériennes en translation oblique.

- See Lesley, Everett Parker: Report on tests of metal model propellers in

combination with a model VE-7 airplane.

- See Lesley, Everett Parker: Test of a model propeller with symmetrical

blade sections.

- See Manigold, Gg.: Die "Haw"—Metall-Luftschraube.

- See Münk, Max Michael, and Elton W. Miller: Model tests with a systematic series of 27 wing sections at full Reynolds number.

- See Noorduyn, R. B. C. : Propellers and three-engined airplanes.

- See Ober, S.: Airplane propeller interference study.

- See Reed propeller: Reed propeller wins Collier Trophy.

- See Sachse, H.: Kirsten-Boeing propeller.

- See Seewald, F.: Beitrag zur Ermittlung der Beanspruchungen und der

Formänderungen von Luftschrauben.

- See Short: The Short metal airscrew.

- See Steinitz, Otto: Eine praktische Formel für Berechnung der Biegungsfestigkeit in schwierigen Fällen.

- See Walther, P. A.: Lifting forces developing on blades of hydraulic

machines II. Rotating blades.

- See Weick, Fred E.: Navy propeller section characteristics as used in

propeller design.

- See Weick, Fred E.: Propeller design.

- See Woods, Baldwin Munger, and J. E. Younger: Investigation of the

influence of pitch on the performance of an air propeller when its slipstream is obstructed.

- See Wright, T. P.: The,durability of metal propellers.

Propulsion. See Leyat, Marcel: L'aéropropulsion.

Ptjmps. Pompes auto-régulatrices A. M., et alimentation des moteurs à explosion par le système A. M.

L'Aérophile, 34e année, Nos. 15-16 (ler-15 août 1926), Paris, p. 252, ill.

Pye, D. R. The high-duty compression-ignition engine.

Engineering, Vol. 122, No. 3163 (Aug. 27, 1926), London, pp. 277-279, diagrs., tables.

Q

Qtjantas. "Quantas." A successful Australian air transport service.

Flight, Vol. 18, No. 16 (Apr. 22,1926), London, pp. 245-246, ill., map.

Quattrini, Antonio. Col "Norge" sulla via del Polo. Firenze, Attilio Quattrini, pp. 239, ill.

R

R. A. F. "Mysteries" and mastery of the air: The R. A. F. display.

Illustrated London News, Vol. 169, No. 4551 (July 10,1926), London, p. 61, ill.

R. 101. Future Empire travel: Dominion Premiers see "R 101."

Illustrated London News, Vol. 169, No. 4571 (Nov. 27, 1926), London, p. 1031, ill.

R. S. 1. The Goodyear semirigid airship "RS-1."

Flight, Vol. 18, No. 12 (Mar. 25, 1926), London, pp. 175-176, ill.

- Huge semirigid United States Army RS-1.

Sciant. Amer., Vol. 134 (May 1926), New York, p. 356, ill.

- RS-1 moors at Ford tower.

Aviation, Vol. 21, No. 14 (Oct. 4, 1926), New York, p. 590, ill.

R 33. The first airship to carry two planes: The "R 33" launching test.

Illustrated London News, Vol. 169, No. 4567 (Oct. 30, 1926), London, p. 821, ill.

- The last of H. M. A. R. 33.

The Aeroplane, Vol. 31, No. 21 (Nov. 24, 1926), London, p. 660, ill.

- R. 33 as aircraft carrier.

Flight, Vol. 18, No. 43 (Oct. 28, 1926), London, pp. 703-706, ill.

R. Accademia Aeronautica. See Bonzani, A.: Ministero dell' aeronautica direzione generale del personale militare e delle scuole. Concorso per l'ammissione, per titoli e per esami, alla prima classe del corso normale della R. Accademia Aeronautica.

Raab, A. Flügelschwingungen an freitragenden Eindeckern.

Zaitschr. Flugt. Motorlultsch., 17. Jahrg., 7. Haft (14. April 1926), München, pp. 146-147.

Rabozee, H. Contribution à l'étude des propriétés mécaniques des bois.

Illa Congrès International de la Navigation Aérienne, T. 3, Paris, [1925], pp. 60-70.

- Quelques résultats d'essais aux chocs répétés.

IHe Congrès International de la Navigation Aérienne, T. 3, Paris, [1925], pp. 110-121, dlagrs., tabls.

Races. See Friedensburg, Walter: Wettrennen oder Leistungsprüfung. Racing. On air racing.

The Aeroplane, Vol. 31, No. 3 (July 21, 1926), London, pp. 90-96, ill.

Radiators. Aircraft radiators.

Automobile Engineer, Vol. 16, No. 216 (June 1926), London, pp. 220-222, ill.

- Radiateurs.

L'Aérotechniqua (L'Aéronautique, 8me année, No. 81), 4me année, No. 38 (fév. 1926), Paris, pp. 66-67, ill.

- See Richter, L. : Calculation of tubular radiators of the automobile type.

Radio. Radio in the Spain-Argentina flight.

Aviation, Vol. 20, No. 18 (May 3, 1926), New York, p. 672, diagr.

- La radiotelegrafia nelT aeronautica.

Rivista Aeronautica, Anno 2, N. 1 (gen. 1926), Roma, pp. 123-125.

- See Franck : La navigation par temps de brume et l'aide que peut apporter

la radiogoniométrie.

- See Guerra, Ugo: La radio nell' aeronautica.

- See Guerra, Ugo: Sulla possibilità di trasmissione di schizzi e disegni da

bordo di un aeroplano a terra a mezzo della radiotelegrafia.

- See Hersey, Mayo D. : Note on a problem in radio navigation.

- See Vanni, G. : La radiotelegrafìa nell' aeronautica.

- See Wireless.

Radio beacons. The Air Service radio beacon.

Aviation, Vol. 20, No. 10 (Mar. 8, 1926), New York, pp. 331-332, Ol. Raethjen, P. Atmosphärische Stromfelder und kinematographische Vermessungen. Arbeiten des Forschengsinstitute der Rhön-Rossitten-Ges. e. V. Wasserkuppe im Jahr 1925.

Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt E. V. (WGL), 14. Haft Dez. 1926, München und Berlin, 1926, pp. 96-102, ill.

Raethjfbn P. Beschleunigte Flugzeugbeweguiigen.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 24. Heft (28. Dez. 1926), München, pp. 537-547, ill., diagrs.

Raethjfen, P., and H. Knott. Flugeigenschaftsbestimmung durch kine-matographische Flugvermessung.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 23. Heft (14. Dez. 1926), München, pp. 512-524, iU.

Raethjfen, P., and F. Wagner. Das zweidimensionale, atmosphärische Stromfeld um ein Hindernis, a) Problemstellung und Theorie, von P. Raethjen. b) Die Stromfeldbestimmung in Luv der Düne von Rossitten, von F. Wagner.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 9. Heft (14. Mai 1926), München, pp. 185-192, ül.

Raffaelli, Italo. Accoppiamento di più motori.

Rivista Aeronautica, Anno 2, N. 5 (mag. 1926), Roma, pp. 107-112, ill.

- Temperatura dell' acqua di circolazione nei motori d' aviazione in alte

quote.

Rivista Aeronautica, Anno 2, N. 11 (nov. 1926), Roma, pp. 121-127, diagrs.

Ragg, R. L. Experimental flying from the pilot's point of view.

Journ, Roy. Aer. Soc, Vol. 30, No. 191 (Nov. 1926), London, pp. 676-685.

Raimondi, E. Alcune considerazioni sulle leggi di similitudine meccanica.

L'Aerotecnica, Giornale ed Atti dell'Associazione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 277-283.

Rainy Lake. See Photography: Aerial photographic survey of international

waters. Advantages in time, cost, detail and accuracy in mapping Rainy

Lake district by amphibian plane. Ramai, F. See Amundsen, Raold: Il mio volo polare fino a 88° lat. Nord con

relazioni di H. Riiser-Larsen, L. Dietrichson, F. Ramm, J. Bjerknes. Ramsbottom, J. E. See Glendinning, W. G., and J. E. Ramsbottom. Report

on further investigations of the effect of sunlight on aeroplane fabric. Randolph, D. W. See Brode, R. B., D. W. Randolph, and F. B. Silsbee:

Electrical characteristics of spark generators for automotive ignition. Range. See Diehl, Walter Stuart: Three methods of calculating range and

endurance of airplanes.

Ranney, H. F. Colonel William Mitchell declared guilty.

U. S. Air Services, Vol. 11, No. 1 (Jan. 1926), Washington, D. C, pp. 29-31.

- Maps again have caught up with progress.

U. S. Air Services, Vol. 11, No. 3 (Mar. 1926), Washington, D. C, pp. 41-34, map.

Recorders. See Coleman, Donald G.: N. A. C. A. flight-path-angle and airspeed recorder. Records. Les grands records de distance.

L'Illustration 84e année, No. 4371 (11 dec. 1926), Paris, pp. 668-669, ill.

-• New French load carrying altitude records.

Aviation, Vol. 20, No. 1 (Jan. 4, 1926), New York, pp. 10-11, ill.

- New world records recognized.

Aviation, Vol. 20, No. 5 (Feb. I, 1926), New York, pp. 158-159.

- On international air records.

The Aeroplane, Vol. 30, No. 20 (May 19, 1920), London, pp. 473-476.

- Le quatrième record de distance de 1926.

L'Aéronautique, 8me année, No. 91 (dec. 1926), Paris, pp. 423-424, map.

- Le record d'altitude en avion.

La Nature, suppl., 54e année, No. 2735 (4 sept. 1926), Paris, p. Issi.

- Records, raids et performances.

L'AérophUe, 34e année, Nos. 3-4 (ler-15 fév. 1926), Paris, pp. 43-43, ill.

Records. United States holds most world records.

TJ. S. Air Services, Vol. 11, No. 3, (Mar. 1926), Washington, D. C, p 44.

- Wing loading and world's records.

Flight, Vol. 18, No. 42 (Oct. 21, 1926), London, pp. 686-087, ill.

- World's air records.

Flight, Vol. 18, No. 18 (May 6,1926), London, p. 274. *

—— World's records in aviation.

Flight, Vol. 18, No. 4 (Jan. 28, 1926), London, p. 49.

—— See Callizo: Le record d'altitude de Callizo.

- See France: La France et les records d'aviation.

- See L., M.: Nouvelle liste des records du monde.

- See Lindholm, F.: La précision de la mesure des records d'altitude.

- See Martens, A.: Flying for an altitude record.

Reed, propeller. Reed propeller wins Collier Trophy.

Aviation, Vol. 20, No. 8 (Feb. 22,1926), New York, p. 256, ill.

Regelsberger, Friedrich. Chemische Technologie der Leichtmetalle und ihrer Legierungen.

Leipzig, Otto Spanner, 1926, pp. 365, ill. '

Reid, Elliott G. Pressure distribution over thick tapered airfoils, N; A. C. A. 81, U. S. A. 27 C modified and U. S. A. 35.

National Advisory Committee for Aeronautics, Report No. 229, June 5, 1926, Washington, Government Printing Office, 1926, pp. 18, ill., tables.

Reid, G. H. Reid control indicator au apparatus for maintaining control of aircraft in fog, cloud or at night.

Hie Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 115-119, ill.

Reinhardt, C. G. Gypsying the Jennies.

Sat. Even. Post, Vol. 198 (Jan. 9, 1926), Philadelphia, p. 34, ill.

Reissner, H. Neure Probleme aus der Flugzeugstatik. ,

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 7., 9., 18. Heft (14. April, 14. Mai, 28. Sept. 1926), München, pp. 137-146, 179-185, 384-393, ill.

Relf, E. F. A comparison of model and full scale performance of the Bristol Fighter using Flight Lieut. Capon's method of presentation.

Aeronautical Research Committee, Reports and Memorandum, No. 983 (Ae. 195), Sept., 1925, London, 1926, pp. 3, diagr.

—— An electrical method of tracing stream lines for the two-dimensional motion of a perfect fluid.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 655-657, ill., diagr.

Relf, E. F., and T. La Vender. Experiments on the flow behind a rotating cylinder in the water channel.

Aeronautical Research Committee, Reports and Memoranda, No. 1009 (Ae. 215), May, 1925, London, 1926, pp. 2, ill.

Relf, E. F., and L. F. G. Simmons. The frequency of the eddies generated by the motion of circular cylinders through a fluid.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 658-660, diagr.

Relf, E. F., and L. J. Jones. Measurements of lift, drag, and pitching moment on the one-fifth scale model of the Bristol Fighter with airscrew running.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 316-335, tabls., diagr.

Relf, E. F. Measurements of the rotary derivative M, on the one-fifth scale model Bristol fighter in the duplex wind tunnel.

Aeronautical Research Committee, Reports and Memoranda, No. 978 (Ae. 192), June, 1925, London, 1926, pp. 15, tabls., diagrs. 106659—28-9

Relf, E. F. The periodic fluid flow behind circular cylinders.

Hie Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 473-176.

- The work of the Aeronautics Department of the National Physical Labo-

rator3".

Hie Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 464-472.

Reliability tour. Beach in Travel Air wins second reliability tour. Aviation, Vol. 21, No. 9 (Aug. 30, 1926), New York, pp. 362-366, ill.

Remington-Burnelli. The Remington-Burnelli Airliner.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, p. 506, ill.

Renaud, Alfred. Note au sujet de la simplicité de la construction métallique des avions.

Ille Congrès International de la Navigation Aérienne, T. 3, Paris, [1925], pp. 122-124, ill.

Renault. La Coupe Renault et le record de distance.

L'Aéronautique, 8me année, No. 88 (sept. 1926), Paris, pp. 286-291, ill.

- Etude sur le moteur Renault 450 CV., prise directe. Caractéristiques et

comparaison avec le 550 CV.

L'Aérophile, 34e année, Nos. 11-12 (ler-15 juin 1926), Paris, p. 175, ill.

- Le moteur Renault à Téhéran.

L'Aérophile, 34e année, Nos. 9-10 (ler-15 mai 1926), Paris, p. 146, port.

- Les succès des usines Renault dans le concours de grande endurance des

moteurs d'aviation.

L'Aérophile, 34e année, Nos. 1-2 (ler-15 janv. 1926), Paris, p. 25, ill.

Rénaux, Eugène. See Blanchet, Georges: Aviateurs contemporains. Eugène Rénaux.

Reppert, H. v. Zweck der Ausschreibung: Züchtung eines Postflugzeuges.

Zeitschr. Flugt. Motorluftschr., 17. Jahrg., 20. Heft (28. Okt. 1926), München, p. 449.

Research. Research in aeronautics.

Engineering, Vol. 122, No. 3162 (Aug. 20,1926), London, p. 237.

- Wimperis, H. E. : The relation of physics to aeronautical research.

Resistance. See Shoemaker, James M.: Resistance of a fifteen-centimeter

disk.

Rhön. See Eisenlohr, Roland: Der 6. Rhönsegelflug 1925.

- See Eisenlohr, Roland: Uber den Rhönsegelflug-Wettbewerb 1926.

Rhone engine. The super Rhone engine.

Aero Digest, Vol. 8, No. 3 (Mar. 1926), New York, p. 132, ill. Aviation, Vol. 20, No. 4 (Jan. 25, 1926), New York, p. 113, ill.

Riabouchinsky, M. D. Sur la résistance des fluides et la réaction d'un jet.

Ille Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 177-205, ill. Eévue Générale de l'Aéronautique, Tome 6, No. 6.

Ricaud, Marcel. See Escande, Léo, et Marcel Ricaud: Rapport sur les "Lois de la similitude dynamique."

Ricci, Agostino. Introduzione alio studio dell'arte militare. Torino, Edizione Schloppo, 1926, pp. 272.

Richard-Penhoët. The Richard-Penhoët giant flying boat.

Aviation, Vol. 21, No. 24 (Dec. 13, 1926), New York, p. 1006, ill.

- See Blanchet, Georges: L'hydravion penta-moteurs Richard-Penhoët.

Richardson, Holden Chester. Naval development of floats for aircraft.

Engineering, Vol. 122, No. 3177 (Dec. 3, 1926), London, pp. 705-708, ill., dlagrs.

- The trend of flying boat development.

Journal of the American Society of Naval Engineers, Vol. 38, No. 2 (May 1926), Washington, D. C, pp. 231-253, ill.

Richmond, V. C. A review of the present position with regard to airship research and experiment.

Journ. Roy. Aer. Soc, Vol. 30, No. 190 (Oct. 1928), London, pp. 647-586, ill.

Richter, Hans. L'almauacco aeronautico tedesco per il volo librato e peril volo librato e per il volo a motore.

Barlin, Editora Guido Hackebeil, 1925, pp. 209, ill.

Richter, Ludwig. Calculation of tubular radiators of the automobile type.

National Advisory Committee for Aeronautics, Technical Memorandums No. 344, Jan. 21, 1926 (mimeographed), Washington, January 1926, pp. 66, ill., diagrs. From "Zeitschrift für angewandte Mathematik und Mechanik," August 1925.

- On the knocking of gasoline engines.

National Advisory Committee for Aeronautics, Technical Memorandums No. 371, Aug. 17, 1926 (mimeographed), Washington, July 1926, pp. 40, diagrs. From "Der Motorwagen," 1925: Nov. 20, 1926: Jan. 20, May 10, June 20.

Rickenbacker. See Wymer, Harold J.: Rickenbacker engine test-flown.

Rickenbacker, EDWARn V. See Marshall, Edward: Rickenbacker foretells.

Riddle, Karl. Aerial surveys lend confidence on hastily organized job. Plat

of 18,000 acres of undeveloped land surveyed in minimum time—conclusions

drawn from aerial photographs.

Engineering News-Record, Vol. 97, No. 27 (Dec. 30, 1926), New York, pp. 1072-1073, ill. Rigg, E. H. The launch of the airplane carrier U. S. S. "Saratoga."

Engineering, Vol. 121, No. 3132 (Jan. 8, 1926), London, pp. 56-60, ill. Riiser-Larsen, Hjalmar. See Amundsen, Roald Engelbregt Gravning: Den

f0rste flukt over Polhavet ...

- See Amundsen, Roald Engelbregt Gravning: II mio volo polare fino a

88° lat. Nord con relazioni di H. Riiser-Larsen, L. Dietrichson, F. Ramm, J. Bjerknes.

Riley, John A. The winds of Oklahoma and east Texas.

IHe Congrès International da la Navigation Aérienne, T. 2, Paris, [1925], pp. 76-92, ill. diagrs., tabls.

Ripert, Georges. La responsabilité du transporteur aérien d'après le projet de la Conférence Internationale de Paris de 1925.

Revue Juridique Internationale de la Locomotion Aérienne, jan.-fév.-mars 1926, Paris, pp. 1-16.

Ritchie, H. C. Aviation lighting. A general discussion of the air mail lighting system now in use for night flying.

Aviation, Vol, 20, No. 2 (Jan. 11, 1926), New York, pp. 60-61, ill.

Robert, Henry. L'avion à vapeur est-il possible?

L'Aérophila, 34a année, Nos. 17-18 (lar-16 sept. 1926), Paris, pp. 275-276, fll.

- Notes sur quelques recherches d'aérodynamique.

Ilia Congrès International da la Navigation Aérianna, T. 2, Paris, [1926], pp. 498-520, diagrs.

Robertson, F. A. de V. Air drill.

Flight, Vol. 18, No. 23 (June 10, 1926), London, pp. 334-335, ill.

- Another Australian flight.

Flight, Vol. 18, No. 42 (Oct. 21, 1926), London, pp. 688-689, map.

- The R. A. F. displays 1920-1925.

Flight, Vol. 18, No. 26 (July 1,1926), London, pp. 373-390, ill.

- Return of the Cape flight.

Flight, Vol. 18, No. 25 (June 24,1926), London, pp. 360-361, ill., map.

Robertson, Hugh W. The Byrd polar quest.

V. 8. Air Services, Vol. 11, No 4 (Apr. 1926), Washington, D. O., pp. 9-14, 01.

- The eagle screams at the North Pole.

TJ. S. Air Services, Vol. 11, No. 6 (June 1926), Washington, D. C, pp. 12-23, ill.

Robertson, William B. Commerce calls for speed—Flying is the answer.

U. S. Air Services, Vol. 11, No. 2 (Feb. 1926), Washington, D. C, p. 31, ill.

Robinson, Jr., William H. See Bromley, Stevens, and William H. Robinson,

Jr. : The lateral failure of spars. Robotti, I. La técnica del motorista: manuale teorico-pratico per i motoristi

ed i piloti d'aviazione. Terza edizione riveduta ed aumentata.

Torina, S. Lattes e C. (Ajani e Oanale), 1925, pp. vi, 513, con 21 tavola.

Rocard, Y. Condicions à la paroi des problems d'aérodynamique fournies par la théorie cinétique des gaz.

C. E. Acad. Sei., T. 182, No. 7 (15 fêv. 1926), Paris, pp. 446-448.

Roche, J. A. Study of dural and steel for airplane structures.

Air Corps Information Circular, Vol. 6, No. 568 (Sept. 1, 1926), Washington, Government Printing Office, 1926, pp. 7, diagrs.

Ron Gers, John. Airplane's twenty-second birthday.

U. S. Air Services, Vol. 11, No. 1 (Jan. 1926), Washington, D. C, pp. 13-14.

Rodin, Charles. See Bouché, Henri: Charles Rodin.

Rogers, William A. The S-35 is flight tested.

Aero Digest, Vol. 9, No. 3 (Sept. 1926), New York, p. 230, ill.

Rohrbach, Rohrbach all metal commercial airplane RO VIII "Roland."

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 24 (mimeographed), Washington, December 1926, pp. 6, ill.

Rohrbach, Adolf. Entwurf und Aufgaben des Leichtbaues.

Berichte und Ahhandiingen der Wissenchaftlichen Gesellschaft für Luftfahrt E. V. (WGL) 14. Heft, Dez 1926, München und Berlin, 1926, pp. 64-78, ill.

-- Recent experiments with large seaplanes.

i National Advisory Committee for Aeronautics, Technical Memorandums No. 353, Mar. 11, 1926 (mimeographed) Washington, March 1926, pp. 33, ill.

From "Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt," July 1925.

Romino. See Kérambrun, Paul: Une invention nouvelle, récemment appliquée

à l'aviation va rendre les avions silencieux. Ronan, K. M. See Crowley, Jr., J. W., and K. M. Ronan: Characteristics of a boat type seaplane during take-off.

- See Crowley, Jr., J. W., and K. M. Ronan: Characteristics of a twin-float

seaplane during take-off.

Roome, A. B. Underwriting aviation.

Aviation, Vol. 21, No. 0 (Aug. 9, 1926), New York, pp. 244-245, ill. Roots. See Ware, Marsden: Description and laboratory tests of a Roots type

aircraft engine supercharger. Rotating laboratory. See^Prandtl, Ludwig: First experiences with the rotating

laboratory.

Rotating wings. The rotating wing in aircraft. , ,

Engineering, Vol. 122, No. 3161 (Aug. 13, 1926), London, p. 207.

- See WimperiSj.H. E.: The rotating wing in aircraft.

Rotor ship. See Bárbara: El buque "Bárbara" con rotores Flettner, en Barcelona. ;•

Rotzoll. Etwas über das Prall-Luftschiff.

Luftweg, Jahrg. 1926, Heft 12 (25. Juni 1926), Berlin-München, pp. 122-123.

Rot, Maurice. A propos de recherches théoriques sur ^aérodynamique. • LAêrophile, 34e année, Nos. 5-8 (ler-16 mars 1926), Paris, pp. 76-77, ai. Suite et fin, LAêrophile, 33e année, Nos. 23-24 (ler-15 déo. 1925).

- Formules de comparaison des polaires; influence de l'allongement des

cellules.

L'AérophUe, 34e année, Nos. 16-16 (ler-15 août 1926), Paris, pp. 241-246, ill.

Royal Aero Club. Sec Speed: Speed estimates and handicapping. New formula to be used by the Royal Aero Club.

Royal Aeronautical Society. The Ro3Tal Aeronautical Society's sixtieth anniversary.

Flight, Vol. 18, No. 3 (Jan. 21, 1926), London, p. 36.

Royal Air Force. On the Royal Air Force display.

The Aeroplane, Vol. 31, No. 1 (July 7, 1926), London, pp. 1-26, ill.

- R. A. F. display, 1926.

Flight, Vol. 18, No. 27 (July 8, 1926) London, pp. 399-410, ill.

- The Royal Air Force1 Cape flight.

The Aeroplane, Vol. 31, No. 26 (Dec. 29, 1926), London, pp. 866-871.

- The Royal Air Force display, 1926.

Aero Field, Vol. 1, No. 5 (Aug. 1926), London, pp. 98-100, ill.

- Royal Air Force medical branch. New pay and conditions.

Flight, Vol. 18, No. 35 (Sept. 2, 1926), London, p. 551.

- Royal Air Force reorganization. Formation of air defences of Great

Britain.

Flight, Vol. 18, No. 18 (May 6, 1926), London, pp. 272-273.

Royer, Etienne. Note sur l'influence de la position du Maitre-Couple dans lea profils bi-convexes symétriques d'ailes d'avions.

Ule Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 454-463, ill.

Royse, M. W. Air law for America.

Nation, Vol. 123 (Dec. 22, 1926), New York, pp. 659-660.

Rozier, Pilâtre de. Alla memoria di Pilâtre de Rozier.

Rivista Aeronautica, Anno 2, N. 2 ((eh. 1926), Roma, pp. 171-174, ill.

Rubber. See Verneuil, M.: Sur la perméabilité des étoffes caoutchoutées.

Rühl, Karl, und Hasso Wiederhold. Albatross-Verkehrsflugzeug L 73.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 14. Hett (28. Juli 1926), München, pp. 295-299, ill.

Rühl, Karl. Nomographische Rechentafeln für Rohrberechnung.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 3. Heft (14. Feb. 1926), München, pp. 53-57, 111.

RuLOT, H. Note sur le contrôle sanitaire du trafic par avion.

IHe Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 47-48.

Rumpler, R. Das Trans-Ozeanflugzeug.

Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt e. V. (WGL) 14. Heft, Dez. 1926, München und Berlin, 1926, pp. .37-63, ill., diagrs., maps.

Russell, Frank H. An insider's story of the Schneider Cup race.

U. S. Air Services, Vol. 11, No. 12 (Dec. 1926), Washington, D. C, pp. 24-26.

Russell, Roy E. Will the public pay?

Aero Digest, Vol. 8, No. 4 (Apr. 1926), New York, pp. 188-189, 234.

Russia. Air lines in south Russia.

Flight, Vol. 18, No. 2 (Jan. 14,1926), London, p. 23, map.

- See Aprijasky, Peter: Gliders in Soviet Russia.

- See Goldstrom, John: Russia's future in the air.

- See K. 1.: The "K. 1" monoplane. A commercial machine constructed

in Soviet Russia.

- See Ozeroff, G. A.: The Central Aero-Hydrodynamical Institute.

Ryan. Ryan Cloudster and Standard.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, pp. 508-508A, ill.

- The Ryan M-l monoplane.

Aero Digest, Vol. 8, No. 5 (May 1926), New York, p. 276, ill. Aviation, Vol. 20, No. 19 (May 10,1926), New York, pp. 712-713, ill.

Ryhn. See Denham, A. F.: New Ryan monoplane permits change of engines in 20 minutes.

- See Mahoney, B. F. : The Ryan airlines.

Rynin, N. A. Der Luftverkehr. Seine Grundlagen und seine Statistik. Leningrad, Oktoher 1925.

S

S-35. Projected non-stop flight of S-35 from New York City to Paris.

Sciant. Amer., Vol. 135 (Aug. 1926), Naw York, pp. 146-148, ill.

- See Rogers, William A.: The S-35 is flight tested.

Sabatier. M. Sabatier, ingénieur en chef du service technique, nous dit ce qu'il pense de la question de l'hélicoptère.

L'Aérophile, 34e année, Nos. 13-14 (ler-15 juil. 1926), Paris, p. 210, ill.

Sabinin, G. Problems of utilising of energy of wind II. Gyroscopic effect of windmills and auxiliary windmill calculations.

Transactions of tha Cantral Aero-Hydrodynamical Institute, No. 22, TJ. S. S. R. Scientific-Technical Dapartmant of tha Suprama Council of National Economy, No. 141, Moscow, 1926, pp. 26, ill.

- Problems of utilising of energy of wind III. Windmill characteristics as

affected by the direction of wind.

Transactions of tha Cantral Aero-Hydrodynamical Institute, No. 28, U. S. S. R. Scientiflc-Technical Department of the Suprame Council of National Economy, No. 160, Moscow, 1926, pp. 20, ill.

Sachse, H. Kirsten-Boeing propeller.

National Advisory Committae for Aeronautics, Technical Memorandums No. 351, Feb. 25, 1926 (mimeographad), Washington, February 1926, pp. 8, ill. From "Zeitschrift für Flugtechnik und Motorluftschiflahrt," January 14, 1926.

Saui-Lecointe. Probabilités sur le problème de la vitesse. Ce que pourront être les records de demain.

L'Aérophile, 34e annéa, Nos. 9-10 (ler-15 mai 1926), Paris, pp. 144-145, ill.

Safety. Airplanes and safety.

Nation, Vol. 123 (Nov. 17, 1926), Naw York, p. 500.

- Safety first.

Tha Aeroplane, Vol. 31, No. 3 (July 21, 1920), London, pp. 96-98.

- "Safety first" in the air: Wonderful instruments to test the strains and

stresses on an airship.

Mustratad London News, Vol. 166, No. 4485 (April 4,1925), London, pp. 582-583, ill.

- See Airships: Making airships safe.

- See Martinot-Lagarde: Les progrès de la sécurité en avion.

- See Military aeronautics: Security in the air.

- See Tuckerman, L. B.: Making airships safe.

Safety code. See Laws and regulations: Our new aeronautic safety code. Saffy, J. F. Influence d'un séjour prolongé au rouge sur la resilience de quelques métaux pour soupapes d'échappement.

C. R. Acad. Sei., T. 183, No. 20 (15 nov. 1926), Paris, pp. 861-863.

Sahnovsky, Georges. Calculateur du triangle des vitesses.

IHa Congrès International da la Navigation Aérienne, T. 2, Paris, [1925], pp. 107-109, ill.

Saint Paul. See Jencks, E. D.: Municipal airport opened at Saint Paul.

Salvauore. The age of flight: Aviation scenes in three continents.

Illustrated London News, Vol. 169, No. 4573 (Dec. 11, 1926), London, p. 1178, ill. Parachutes.

Samoa. See Thomson, Andrew: Apia Observatory, Apia, Western Samoa, Lat. 13° 48.4' S. Long. 171° 46.5' W. Upper air observations 1923-1924.

Samuels, Frank E. Growth of the Douglas Company.

Aero Digest, Vol. 8, No. 6 (June 1926), New York, pp. 346, 392-393, ill.

Sand, René. L'aviation humanitaire.

nie Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 175-183.

Sandiper, Thaddeus Nelson. Airplanes speed Red Cross disaster relief, ü. S. Air Services, Vol. 11, No. 11 (Nov. 1926), Washington, D. C, p. 41.

Santoni, E. Fotogrammetria aerea col metodo Santoni.

L'Aerotecnica, Qiornale ed Atti dell'Associazione Italiana di Acrotecnica, Numero straordinario, Pisa, 1926, pp. 417-434, ill.

Santos-Dumont. See C, H.: Deux gestes de Santos-Dumont. Saratoga. See Rigg, E. H.: The launch of the airplane carrier U. S. S. "Saratoga."

- See Walker, J. B.: Giant floating aircraft bases: Saratoga and Lexington.

Sarceni, R. How aviation will influence world history.

Aero Field, Vol. 1, No. 5 (Aug. 1926), London, pp. 106, 107.

Sauernheimer. Der Zentralflughafen Berliu.

Zeitschr. Ver. deutsch. Ing., Bd. 70, Nr. 46 (13. Nov. 1926), Berlin, pp. 1549-1557, ill.

Saulnier, R. Roland Garros et le tir à travers l'hélice.

L'Aérophile, 34e année, Nos. 1-2 (ler-15 jen. 1926), Paris, p. 9.

Saunders Medina. The Saunders Medina.

The Aeroplane, Vol. 31, No. 18 (Nov. 3, 1926), London, pp. 582-586, ill., diagr. Sauter, J. Determining size of drops in fuel mixture of internal combustion engines.

National Advisory Committee lor Aeronautics, Technical Memorandums No. 390, Dec. 2, 1926 (mimeographed), Washington, Decemher 1926, pp. 8, ill. From "Zeitschrift des Vereines deutscher Ingenieure," July 31, 1926. Sauvaire-Jourdan. L'aviation dans la marine de guerre.

La Nature, 54e Année, No. 2736 (11 sept. 1926), Paris, pp. 170-174, ill.

Sauzedde. The Sauzedde wheel.

Aero Digest, Vol. 9, No. 4 (Oct. 1926), New York, p. 325, ill.

Save, M. R. De la nature juridique de l'aéronef.

Hie Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 42-45.

Savoja. Aeronautica militare. L'evoluzione delT aviazione duraute la guerra« Rivista Aeronautica, Anno 2, N. 1 (gen. 1926), Roma, pp. 65-80.

Sayers, W. Brooks. Brooks Sayers electric generator for aircraft. Engineering, Vol. 122, No. 3168 (Oct. 1, 1926), London, p. 434, ill.

Sayers, W. H. The economics of air transport.

The Aeroplane, Vol. 30, Nos. 1, 2, 4 (Jan. 6, 13, 27, 1926), London, pp. 12-16, 40-41, 70-72.

- Fifteen years of the aircraft industry.

The Aeroplane, Vol. 30, No. 26 (June 30, 1920), London, pp. 674-702, ill.

- Lessons from "The Daily Mail" competition.

The Aeroplane, Vol. 31, No. 12 (Sept. 22,1926), London, pp. 408, 410.

- Tail-less aeroplanes, ancient and modern.

The Aeroplane, Vol. 30, No. 17, (Apr. 28, 1926), London, pp. 446-458, ill.

■- The trend of aircraft design in Franco.

The Aeroplane, Vol. 31, Nos. 25-26 (Dec. 24-31, 1026), London, pp. 844-848, 872-876, ill.

Scheibert, Justus. Hochsee-Flugboote.

Luftfahrt, 30. Jahrg., Nr. 4 (20. Feb., 1926), Berlin, pp. 51-54, ill.

Scherschewsky, A. B. Eine Formel für das Gewicht des Segelflugzeuges.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 15. Heft (14. Aug. 1926), München, pp. 326-327.

Scherz, Walter. Auf der Weitfahrt um den D. V. L.-Wanderpreis 1926.

Luftweg, Jahrg. 1926, Heft 13 (10. Juli 1926), Berlin-München, pp. 134-135, ill.

•- Reisenluftschiffe.

Luftfah-t, 30. Jahrg., Nr. 7 (6 April, 1926), Berlin, pp. 104-106, ¡11.

Scheubel, F. N. Uber das Leitwerkflattern und die Mittel zu seiner Verhütung.

Berichte und Ahhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt E. V. (WGL), 14. Heft, Dez. 1926, München und Berlin, 1926, pp. 103-107, ill.

Scheve, G. v. Bericht über den Verlauf der XV. Ordentlichen Mitgliederversammlung der Wissenschaftlichen Gesellschaft für Luftfahrt (WGL) vom 16.-20. Juni 1926 in Düsseldorf.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 13. Heft (14. Juli 1926), München, pp. 275-286.

Schiff trophy. See Campbell, H. D.: Capt. Campbell awarded Schiff trophy.

Schmidt, H. Die Anlage eines Flugplatzes.

Zeitschr. Flugt.'Motorluftsch., 17. Jahrg., 5. Heft (13. März 1926), München, pp. 90-91,01: Schneider Cup. Considerazioni tecniche sulla gara per la Coppa Schneider nel 1925.

Rivista Aeronautica, Anno 2, N. 10 (ott, 1926), Roma, pp. 121-133, tahls.

- Coppa Schneider 1926.

Rivista Aeronautica, Anno 2, N. 11 (nov. 1926), Roma, p. [1].,

- La Coppa Schneider vinta dall'Italia. La classifica.

L'Aerotecnica, Giornale ed Atti dell'Associazione Italiana di Aerotecnica, Voi. 6, No. 7 (nov. 1926), Pisa, pp. 513-514, ill.

- La Coppa Schneider et les nouveaux records mondiaux d'hydraviation.

L'Aérophile, 34e année, Nos. 23-24 (ler-15 dèe. 1920), Paris, pp. 365-366, ill.

—— La Coppa Schneider vinta dall'Italia.

L'Aerotecnica, Voi. 6, N. 7 (Nov. 1926), Pisa, pp. 513-514, ili.

-- Final race for Schneider Cup.

Aero Digest, Vol. 9, No. 5 (Nov. 1926), New York, pp. 356-358, ill.

—- The great international seaplane classic.

Aviation, Vol. 21, No. 19 (Nov. 8,1926), New York, pp. 792-794, ill., map.

- How the flying fascist lifted the mug in this year's Schneider cup contest.

Literary Digest, Vol. 91 (Dec. 4, 1926), New York, pp. 70-73, ill.

- L'industria aeronautica e motoristica Italiana trionfa brillatemente nella

"Coppa Schneider."

L'Ala d'Italia, Anno 5, N. 11 (Nov. 1926), Milano, pp. 474-475, ill., port.

- The International Schneider Cup seaplane race.

Flight, Vol. 18, No. 46 (Nov. 18, 1926), London, p. 748, ill.

- Italy wins the Jacques Schneider trophy at record breaking speed.

Aviation, Vol. 21, No. 21 (Nov. 22, 1926), New York, pp. 870-873, ill.

- Preliminaries to the Schneider Cup race. Elimination trials of the racing

planes give indication of closeness of contest to follow.

Aviation, Vol. 21, No. 21 (Nov. 22,1926), New York, pp. 874-876, ill.

—— The Schneider Cup race.

Aviation, Vol. 21, No. 19 (Nov. 8,1926), New York, pp. 787-791, ill.

—:— The Schneider Cup race, 1925.

Flight, Vol. 18, No. 4 (Jan. 28, 1926), London, pp. 51-53.

——■ The Schneider trophy contest.

The Aeroplane, Vol. 31, No. 23 (Dec. 8, 1926), London, pp. 748-750, ill.

- The Schneider Trophy: Italy's victory.

The Aeroplane, Vol. 31, No. 20 (Nov. 17. 1926), London, pp. 630-632, ill. ——■ Some last minute Schneider Cup news. Observers, judges, and timers named.

Aviation, Vol. 21, No. 20 (Nov. 15, 1926), New York, pp. 837-838, ill.

- See Allen, C. B.: Italy wins Schneider trophy race.

- See Buchanan, J. S.: The Schneider Cup race, 1925.

—— See Russell, Frank H.: An insider's story of the Schneider Cup race. Scholarships. See Fellowships.

Schott, G. Geographie des Atlantischen Ozeans.

Hamburg, 1926.

Schreiber, Otto. Rapport et projet de convention relatifs à la responsabilité de l'exploitant d'un aéronef.

Revuo Juridique Internationale de la Locomotion Aérienne, oct.-nov.-déc. 1926, Paris, pp. 402-422.

Schrenk, Oskar. Effect of roughness on properties of airfoils.

National Advisory Committee for Aeronautics, Technical Memorandums No. 375, Aug. 23, 1926 (mimeographed), Washington, August, 1920, pp. 4, diagrs.

From "Vorläufige Mitteilungen der Aerodynamischen Versuchanstalt zu Göttingen," No. 4, November, 1925

- Experiments with a sphere from which the boundary layer is removed

by suction.

National Advisory Committee for Aeronautics, Technical Memorandums No. 388, Nov. 20, 1926 (mimeographed), Washington, November, 1926, pp. 20, ill. From "Zeitschrift für Flugtechnik und Motorluftschiffahrt, " September 14, 1926.

- Versuche an einer Kugel mit Grenzschichtabsaugung.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 17. Heft (14. Sept., 1926), München, pp. 366372, ill., diagrs. ,/'■."

- See Ackeret, J., A Betz and O. Schrenk: Experiments with an airfoil from

which the boundary layer is removed by suction. ■

Schubert. Luft-Navigation. '

Luftweg, Jahrg. 1926, Heft 9-10 (10. 25. Mai 1926), Berlin-München, pp. 93-94, 105-107. Schütte, Johann. Der Luftschiffbau Schütte-Lanz, 1909-1925. München and Berlin, R. Oldenhourg, 1920, pp. 152, ill., diagrs.

- Zum 10. August, 1926.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 15. Heft (14. Aug., 1926), München, pp. 315316, port., ill. Otto Lilienthal.

Schwengler, J. Statik im Flugzeugbau.

Berling, Richard Carl Schmidt & Co., 1920, pp. 221, ¡11. Bibliothek für Luftschiffahrt und Flugtechnik, Band 16.

Scotland. Seaplane propaganda in Scotland.

The Aeroplane, Vol. 30, No. 23 (June 9, 1926) London, pp. 508-570.

Scott, G. Herbert. The development of airship mooring.

Journ. Roy. Aer. Soc, Vol. 30, No. 188 (Aug., 1926), London, pp. 459-481, diàgr.

- Research problems in airship development.

Journ. Roy.. Aer. Soc, Vol. 30, No. 184 (Apr., 1926), London, pp. 267-273.

Scott, T. Winged words you should know.

Pop. Mech., Vol. 46 (Aug., 1926), Chicago, pp. 291-293, ill.

Seagull. The launch of the Australian seagull.

The Aeroplane, Vol. 30, No. 6 (Feb. 10, 1926), London, pp. 146-148, ill

- "Seagulls" for Australia.

Flight, Vol. 18, No. 6 (Feb. 11, 1926), London, pp. 74-76, ill.

Sealing fleet. See Chicanot, E. L.: Flying with the sealing fleet.

Seaplanes. L'aviation au service de la marine.

L'Illustration, 84e année, No. 4371 (11 déc. 1926), Paris, pp. 670-673, ill.

- Beaching a flying boat.

Scient. Amer., Vol 135 (Aug. 1926), New York, p. 148.

—— Concours d'hydravions de transport multimoteurs 1926.

L'Aérophile, 34e année, Nos. 3-4 (ler-15 fév. 1926), Paris, pp. 35-30

—— Future of the flying boat.

Scient. Amer., Vol. 135 (Sept., 1920), New York, pp. 22S-229.

- Le prochain concours français d'hydravions de transport multimoteurs.

L'Aéronautique, 8me année, No. 83 (avril, 1920), Paris, pp. 121-123, ill

106659—28-10

Seaplanes. P. 5 flying boat N 86, impact test—(Experiments with full-size machines. Third series.)

Aeronautics, Tech. Kept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 360-365, ill., tabls.

- See Baatz, G. : Bau eines See-Schulflugzeuges.

- See Benoit, E. : Designing seaplane hulls and floats.

- See Benoit, E. : Le tracé des carènes d'hydravions.

- See Boutiron, P.: L'évolution de l'hydraviation française et les grands

raids étrangers.

- See Crowley, Jr., J. W., and K. M. Ronan: Characteristics of a boat

type seaplane during take-off.

- See Crowley, .Jr., J. W., and K. M. Ronan: Characteristics of a twin-float seaplane during take-off.

- See Germany: The German seaplane competition.

- See Gosslau, F. : Der deutsche Seeflug-Wettbewerb. 1926.

- See Hamilton Rice Expedition: The hydroplane of the Hamilton Rice

Expedition, 1924-1925.

- See Herrmann, H.: Schwimmer und Flugbootskörper.

- See L., M.: Les récents concours d'hydravions de transport en France et

en Allemagne.

- See Magaldi, G.: Cenni sul problema dei grandi idrovolanti.

- See Richardson, Holden Chester: Naval development of floats for aircraft.

- See Richardson, Holden Chester: The trend of flying boat development.

- See Rohrbach, Adolf: Recent experiments with large seaplanes.

- See Scheibert, Justus: Hochsee-Flugboote.

- See Warnemünde: Le concours d'hydravions de Warnemünde.

Seewald, Feiedeich. Beitrag zur Ermittlung der Beanspruchungen und der

Formänderungen von Luftschrauben.

Berichte und Abhandlungen der Wissenschaftliehen Oesellschaft für Luftfahrt E. V. (WGL), 14. Heft, Dez. 1926, München und Berlin, 1926, pp. 85-95, ill., diagrs.

- Erfahrungen aus dem Deutchen Seeflug-Wettbewerb 1926.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 20^ Heft (28. Okt. 1926), München, pp. 431-435, tables, diagr.

- Die Flugzeuge des Deutschen Seeflug-Wettbewerb 1926.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 20. Heft. (28. Okt. 1926), München, pp.435-439, ill.

- See Karman, Th. von: Uber die Grundlagen der Balkentheorie, von Th.

von Karman; die Spannungen und Formänderungen von Balken mit rechteckigem Querschnitt, von Friedrich Seewald; Stegbeanspruchung hoher Biegungsträger, von Ilse Kober.

Seifeeth, R. Die gegenseitige Beeinflussung zwischen Tragflügel und Propeller Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt e. V. (WGL), 14. Heft, Dez. 1926, München und Berlin, 1926, pp. 108-111, ill, diagrs.

- Untersuchung eines Windradflugzeugs.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 22 Heft (27. Nov. 1926), München, pp. 483-485. tables, diagrs.

Seilkopf, Heineich. Flugmeteorologische Streckenerfahrungen aus dem nordwestlichen Deutschland.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 17. Heft (14. Sept. 1926), München, pp. 359-366, 01.

- See Georgii, Walter, und Heinrich Seilkopf: Ergebnisse einer flugwissenschaftlichen Forschungsreise nach Columbia (S. A.).

Seiiz, D. C. I fly; high spots on the road to Pottstown.

Outlook, Vol. 143 (May 26, 1926), New York, pp. 140-141.

Sekanina, M. C. F. Sportovni letadélko.

Prague, Aeroklub Ceskoslovenski, edit.

Sempill, Colonel, the Master of. Aero engine fuels of to-day and tomorrow. Journ. Roy. Aer. Soc., Vol. 30, No. 192 (Dec. 1926), Loudon, pp. 696-742.

Sergetev. Five years progress of the air fleet. Moscow, 1920.

Serre, H. Les bâtiments porte-avions.

L'Aéronautique, 8me année. No. 82 (mars 1926), Paris, pp. 85-91, ill.

Serrter, J. Avia pursuit airplane B. H. 21.

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 22, (mimeographed), Washington, November 1926, pp. 5, ill. From "Les Ailes," May 28, 1925.

- Lioré-Olivier airplane. (Type 12 night-bomber or type 20 commercial).

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 1, (mimeographed) Washington, March 1926, pp. 7, ill. From "Les Ailes," January 28,1926.

- Wibault two-seat monoplane 8C2. An all-metal pursuit and observation

airplane.

National Advisory Committee for Aeronautics, Aircraft Circular, No. 9, (mimeographed) Washington, June 1926, pp. 6, ill. From "Les Ailes," May 13,1926 and "The Aeroplane," April 14, 1926.

Service Technique de l'Aéronautique. List des bulletins publiés par les Services Techniques de l'Aéronautique 1918-1926.

Service Technique de l'Aéronautique, Bulletin Technique, No. 40, Dec. 1926, France, pp. 34.

Sesquicentennial. Aero exhibits at the Sesqui exhibition. Aero Digest, Vol. 9, No. 4 (Oct. 1926), New "York, p. 322.

- Aircraft show at Sesquicentennial exhibition.

U. S. Air Services, Vol. 11, No. 10 (Oct. 1926), Washington, D. C, pp. 32-33.

Seward, C. L. See Eaton, Herbert Nelson, K. H. Beig, W. G. Brombacher, W. W. Frymoyer, H. B. Henrickson, C. L. Seward, and D. H. Strother: Aircraft instruments.

Sextant. See Parker, R. C: The aircraft bubble sextant, Type A.

Shearing stresses. See Inokuty, Tuneo: On the distribution of shearing stresses in beams of certain cross-sections.

Shenandoah. Aerotechnica. Le cause della catastrofe dello "Shenandoah". Rivista Aeronautica, Anno 2, N. 2 (feb. 1926), Roma, pp. 113-117, ill.

- Constructive recommendations by Shenandoah court.

U. S. Air Services, Vol. 11, No. 2 (Feb. 1926), Washington, D. C, pp. 45-51, ill.

- Last word on the Shenandoah.

Scient. Amer., Vol. 134 (Mar. 1926), New York, p. 156.

- The Shenandoah court findings.

Aviation, Vol. 20, No. 2 (Jan. 11, 1926), New York, pp. 44-46.

- The Shenandoah inquiry.

Engineering, Vol. 121, No. 3133 (Jan. 15, 1926), London, pp. 65-66.

- Shenandoah verdict.

Literary Digest, Vol. 88 (Jan. 16, 1926), New York, pp. 11-12.

- Technical aspects of the loss of the U. S. S. Shenandoah.

Journal of the American Society of Naval Engineers, Vol. 38, No. 3 (Aug. 1926), Washington D. C, pp. 487-694, ill.

- See Anderson, J. B.: Sailing the uncharted seas of the sky in the Shenandoah.

- See Engberding: Die Katastrophe der Shenandoah.

Shenandoah. See Moffett, William A.: Shenandoah memorial service held at Lakehurst.

- See Pochhammer, B.: Die fahrtechnische Lehre aus dem Schiffbruch der

"Shenandoah."

Sherman, William Carrinqton. Air warfare.

New York, The Ronald Press Company, 1926, pp. ix, 307, ill., diagrs.

Shoemaker, G. A. Down to the earth in.'chutes.

Aero Digest, Vol. 9, No. 4 (Oct. 1926), New York, pp. 280-281, 334, ill.

Shoemaker, James M. Resistance of a fifteen-centimeter disk.

National Advisory Committee for Aeronautics, Technical Notes No. 252, Dec. 7, 1926, (mimeographed), Washington, December 1926, pp. 2, ill., diagr., tahle.

Shoji, H. On the plasticity of metals. Part 1.

Scientific Papers of the Institute of Physical and Chemical Research, Vol. 4, Nos. 57-58, (April 1926), Tokyo, Komagome, Hongo, pp. 186-201, ill., diagrs.

Shoji, H., and Y. Mashiyama. On the plasticity of metals at high temperatures. Part II.

Scientific Papers of the Institute of Physical and Chemical Research, Vol. 4, Nos. 67-58, (April 1926), Tokyo, Komagome, Hongo, pp. 186-201, ill., diagrs. /

Shook, Clarence Albert. The distribution of lift over thin wing sections. [Baltimore, 1926], pp. 183-203, diagrs.

Reprinted from American Journal of Mathematics, Vol. 48, No. 3. (July 1926), Baltimore, pp. 183-203.

Short. The Short metal airscrew.

The Aeroplane, Vol. 31, No. 26 (Dec. 29, 1926), London, p. 878, ill.

- See Propellers: The new Short all-metal airscrew.

Short "Mussel." The Short Mussel light seaplane. .

The Aeroplane, Vol. 30, No. 10 (Mar. 10, 1926), London, pp. 266-267, diagr.

- The Short "Mussel" light seaplane. A two-seater performing well on but

65 B. H. P.

Flight, Vol. 18, No. 34 (Aug. 26, 1926), London, pp. 538-539, ill.

- The Short S.7 "Mussel." A training machine with 65-H. P. "Cirrus"

engine.

Flight, Vol. 18, No. 10 (Mar. 11, 1926), London, pp. 141-145, ill., diagr. National Advisory Committee for Aeronautics, Aircraft Circulars, No. 5 (mimeographed), Washington, May 1926, pp. 8, ill. From "Flight," March 11, 1926.

Short, Oswald. Duralumin as a material for aircraft construction.

Aircraft Engineer suppl. Flight, Vol. 18, No. 4 (Jan. 28, 1926), London, pp. 48h-48k, ill. Siddeley, Jaguars. The Siddeley "Jaguar's" 17,000 miles. A triumph for the air-cooled engine.

Flight, Vol. 18, No. 14 (Apr. 8,1926), London, p. 205, ill.

Signals. See Tschudi: Luftfahrzeuflaggen?

Sigrist, F. Design from the manufacturing point of view.

Aircraft Engineer suppl. Flight, Vol. 18, No. 4 (Jan. 28, 1926), London, pp. 48g-48h, ill.

Sikorsky. On the proposed trans-Atlantic flight.

Aviation, Vol. 21, No. 8 (Aug. 23, 1926), New York, pp. 318-319, ill.

- The Sikorsky airliner.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, pp. 508B-508C, ill.

- The Sikorsky trans-Atlantic plane.

Aviation, Vol. 20, No. 22 (May 31, 1926), New York, pp. 834-835, ill.

- See Denham, A. F.: Sikorsky Trans-Atlantic airplane a redesigned

"Freighter."

Sikorsky. See Garber, Paul Edward: Transatlantic attempt fails.

- See McLaughlin, George F. : The all-metal Sikorsky.

Sikorsky plane. See Atlantic flight: The tragedy of an Atlantic flight: Disaster at the start.

Sikorsky S. 35. The Sikorsky S. 35. The three-engined (Jupiter) transatlantic biplane.

Flight, Vol. IS, No. 39 (Sept. 30, 1926), London, pp. 638-640, ill.

SiKORSKY-35. Tests of Sikorsky-35.

Aero Digest, Vol. 9, No. 4 (Oct. 1926), New York, p. 321.

Silent airplanes. See Kérambrun, Paul: Une invention nouvelle, récemment

appliquée à l'aviation va rendre les avions silencieux. Silsbee, F. B. See Brode, R. B., D. W. Randolph, and F. B. Silsbee: Electrical

chracteristics of spark generators for automotive ignition. Simmons, L. F. G., and F. C. Johansen. Experiments on transmission of air waves through pipes.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 661-673, tabls., diagr.

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

Aeronautical Research Committee, Reports and Memoranda, No. 1019 (Ae. 220), Feb., 1926, London, 1926, pp. 7, diagr.

Simmons,' L. F. G., and E. Ower. Note on the application of the vortex theory of aerofoils to the prediction of downwash.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 63-€5, diagr.

Simmons, L. F. G. See Fage, A., and L. F. G. Simmons: An investigation of the airflow pattern in the wake of an aerofoil of finite span.

- See Relf, E. F., and L. F. G. Simmons: The frequency of the eddies

generated by the motion of circular cylinders through a fluid.

Sims, C. J., and E. W. J. Mardles. The effect of metallic sols in delaying detonation in internal combustion engines.

Aeronautical Research Committee, Reports and Memoranda, No. 1021 (e. 19), May, 1926, London, 1926, pp. 11. Engineering, Vol. 121, No. 3154 (June 25, 1926), London, pp. 774-776, tables.

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

Sinclair, D. The development of civil aviation wireless.

JJIe Congrès International de la Navigation Aérienne, T. 1, Paris, 11925], pp. 206-212.

Single seaters. A general specification for convertible single-seat aeroplanes.

The Aeroplane, Vol. 31, No. 16 (Oct. 20, 1926), London, pp. 522-530, diagr.

SiNNATT, O. T. Aerofoils.

Journ. Roy. Aer. Soc, Vol. 30, No. 185 (May 1926), London, pp. 332-336, diagr.

Sisco, Frank Thayer. See Daniels, Samuel, and F. T. Sisco: Metallurgy in

aircraft construction. Skerry, Ernest. Some remarks on the "proof stress."

Journ. Roy. Aer. Soc, Vol. 30, No. 185 (May 1926), London, pp. 337-341, diagr.

Skyways. See Cobham, Alan John: Skyways.

Slaughter, Guy T. How Manila welcomed the Spanish aviators.

tj. s. Air Services, Vol. 11, No. 12 (Dec. 1926), Washington, D. C, pp. 35-36, ill. Slipstream. See Glauert, H.: On the construction of the slipstream of an airscrew.

- See Montieth, Charles N.: Slip stream effect.

Slotted wings. The first slotted wing commercial aeroplane.

The Aeroplane, Vol. 30, No. 15 (Apr. 14,1926), London, pp. 396-398, ill.

—— On.the slotted wing again.

The Aeroplane, Vol. 31, No. 4 (July 28,1926), London, pp. 117-120, ill.

- Velivolo sperimentale con ala a fessura.

Rivista Aeronáutica, Anno 2, N. 2 (feb. 1926), Roma, pp. 117-121, ill.

Smith, S. A. Protecting the life of the air pilot.

TJ. S. Air Services, Vol. 11, No. 4 (Apr. 1926), Washington, D. C, pp. 29-30.

Smolik airplanes. The Czechoslovakian Smolik airplanes.

Aviation, Vol. 21, No. 25 (Deo. 20, 1926), New York, pp. 1044-1046, ill.

Soaring. See Eisenlohr, Roland: Ueber den Rhönsegelflug-Wettbewerb 1926.

- See Ferguson, George: Soaring flight and power, being my discovery of

the principle of soaring flight on motionless wings, and how it can be applied to the development of mechanical power from the force of the motions of

1 the earth.

- See Hartshell, H.: The soaring flight problem.

Sound. See Behm: La sonde aérienne. Southampton. The supermarine Southampton.

The Aeroplane, Vol. 31, No. 21, 23 (Nov. 24, Dec. 8, 1926), London, pp. 652-656, 759, iil., diagrs.

Flight, Vol. 18, Nos. 46-47 (Nov. 18-25, 1926), London, pp. 744-747, 759-764, ill., dlagr.

—¡— The supermarine "Southampton" seaplane (Observation or bomber).

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 25 (mimeographed), Washington, December 1926, pp. 14, ill. From "Flight," Novemher 18 and 25, 1926.

Southwell, R. V. On the calculation of stresses in the hulls of rigid airships.

Journ. Roy. Aero. Soc, Vol. 30, No. 191 (Nov. 1926), London, pp. 627-667. Southwell, R. V., and H. J. Gough. On the concentration of stress in the neighborhood of a small spherical flaw—and on the propagation of fatigue fractures in "statistically isotropic" materials.

Aeronautical Research Committee, Reports and Memoranda, No. 1003 (M. 33), Jan., 1926, London, 1926, pp. 22, ill., tabls., diagr.

SpaightJ James Molont. Aircraft and commerce in war.

London, Longmans, Green and Co., Ltd., 1926, pp. viii, 111.

Spain. Construcción del autogiro en el extranjero y en España. Ibérica, Año 13, Núm. 643 (11 sept. 1926), Barcelona, pp. 146.

- The Spain-Argentina flight. Transatlantic flight successfully completed.

Aviation, Vol. 20, No. 6 (Feb. 8, 1926), New York, p. 188.

- The Spain to Argentina flight.

Aviation, Vol. 20, No. 7 (Feb. 1, 1926), New York, p. 146, map.

- The Spain to Argentina flight. Eighth air crossing of Atlantic successfully achieved and Spain and Argentina brought within 61 hours of each other.

i Aviation, Vol. 20, No. 8 (Feb. 22, 1926), New York, pp. 252-253, ill.

- See Autogiro: Construcción del autogiro en el extranjero y en España.

- See Slaughter, Guy T.: How Manila welcomed the Spainsh aviators.

- See Transatlantic flight: The Spanish transatlantic flight.

Spalding, W. T. Portable tent hangars.

Aviation, Vol. 20, No. 9 (Mar. 1, 1926), New York, p. 297, ill.

Spanner, E. F. The broken trident.

London, Williams and Norgate, Ltd., 1926, pp. 309, ill.

Sparrow, Stanford W. Fuels for high-compression engines.

National Advisory Committee for Aeronautics, Report No. 232, Jan. 14, 1926, Washington, Government Printing Office, 1925, pp. 20, ill., diegrs.

Spars. See Blyth, J. D. : Spindled and hollow spars.

- See Bromley, Stevens, and William H. Robinson, Jr.: The lateral failure

of spars.

- See Haddon, J. D.: Metal spars.

Specifications. Foreign airplane specifications.

Automotive Industries, Vol. 54, No. 9 (Mar. 4, 1926), New York, pp. 420-422.

- See Engines: American and British aero engine specifications.

- See United States: American airplane specifications.

Speed. On speed machines and others.

The Aeroplane, Vol. 30, No. 13 (Mar. 31, 1926), London, pp. 329-336.

- Speed estimates and handicapping. New formula to be used by the

Royal Aero Club.

Flight, Vol. 18, No. 15 (Apr. 15, 1926), London, p. 225.

- Speed of six miles a minute predicted for airplane.

Pop. Mech., Vol. 45, No. 1 (Jan. 1926), Chicego, p. 17.

- See Diehl, Walter Stuart: A study of the effect of a diving start on airplane speed.

- See Grimault, P.: Le prix de la vitesse dans les avions de transport.

- See Sadi-Lecointe : Probabilités sur le problème de la vitesse. Ce que

pourront être les records de demain.

Sperry, Elmer. Elmer Sperry is awarded Fritz Medal. A description of the Sperry airway beacon to be used on the lighted airways.

Aviation, Vol. 21, No. 25 (Dec. 20, 1926), New York, pp. 1030-1037, ill.

Sperry, Lawrence. The aerial torpedo.

U. S. Air Services, Vol. 11, No. 1 (Jan. 1926), Washington, D. C, pp. 16119, ill. Sperry messenger. See Münk, Max Michael, and Walter S. Diehl: The air

force on a model of the Sperry messenger airplane without propeller. Spies, R. Seefiug-Wettbewerb 1926.

Zeitschr. Flugt. Motorluftschr., 17. Jahrg., 20. Heft (28. Okt. 1926), München, pp. 447-448.

Spieweck, Bruno. Photogrammetrische Start- und Landungsmessungen.

Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt E. V. (WGL), 14. Heft, Dez. 1926, München und Berlin, 1926, pp. 79-84, ill., tables.

Spray penetration. See Miller, Harold E., and Edward G. Beardsley: Spray

penetration with a simple fuel injection nozzle. Ssekanina, C. Frantischek. Das Sportflugzeug. Seine Berechnung, Bau

und Gebrauch.

Prag, Verlag des Tschechoslowakischen Aero-Klubs, 1926, pp. 131, ill.

Stability. See Barnwell, F. S.: A suggested method of attaining stability in the original lay-out of an aeroplane design.

- See Bienen, Theodor: Approximate calculation of the static longitudinal

stability of airplanes.

- See Burzio, F. : Una legge aerodinamica stabilita con deduzioni balistiche.

- See Chapligin, S. A.: On the action of the two dimensional airstream on

a cylindrical aerofoil moving in it.

- See Constantin, L.: Les empennages.

- See Moräne, Robert: Influence des méthodes d'apprentissage sur le

sécurité. Rôle de la stabilité naturelle de forme.

Stakman, E. C. Airplanes in plant disease investigations.

Aero Digest, Vol. 8, No. 1 (Jen. 1926), New York, pp. 25-26, 51.

Stalled flight. See Mazer, Paul: Devices for prevention of stalled flight. Stalling. See Courtney, Frank T.: Stalled flight and control.

- See Hall, S. Scott: Stalled flying.

- See Howarth, C.: Notes on stalled flying.

- See Jones, B. Melvill: The control of stalled aeroplanes.

- See Jones, B. Melvill, and A. Trevelyan: Step-by-step calculations upon

tlie asymmetric moments of stalled aeroplanes.

Stanton, T. E. i The friction of pistons and piston rings.

Aeronautics, Tech. Hept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 469-472, diagr.

Starters. See Gas-starter: The gas-starter system for aircraft engines.

Steam. See Wilson, E. E.: Steam power plants in aircraft.

S^team power. See Engines: Steam power in aircraft?

Steel. See Roche, J. A.: Study of dural and steel for airplane structured.

- See Woodward, W. E.: The metallography of steel and cast iron.

Stepanson, Vilhjalmur. What Amundsen has proved: the earth is a sphere,

not a cylinder.

World's Work, Vol. 52 (July 1926), Garden City, N. Y., pp. 241-249, maps. -- See Wells, Linton: Around the world in twenty-eight days; with an

introduction by Vilhjalmur Stefansson. Steinitz, Otto. Eine praktische Formel für Berechnung der Biegungsfestigkeit

in schwierigen Fällen.

ü' Prakischer Masohinen-Konstrukteur, 59. Jahrg., Nr. 21-22 (29. Mai 1926), Berlin, pp. 214-

216, ill. . .

Stern, W. J., and H. Moss. An improved model of optical indicator.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 473-487, ill., diagr.

Stevens, A. W. See Hamilton Rice Expedition: The hydroplane of the Hamilton Rice Expedition. Stevens, H. L. The behaviour of certain aeroplanes when the controls are abandoned in stalled flight.

Aeronautical Research Committee, Reports and Memoranda, No. 1020 (Ae. 221), Nov. 1825, London, 1926, pp. 9.

- The control of a stalled aeroplane as affected by the use of differential

ailerons.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1. London, 1926, pp. 179-183, diagr.

- Full scale tests of a new slot-and-ailerori control.

Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 1, London, 1926, pp. 184-186, diagr.

- Variation of engine power with height. '

' Aeronautics, Tech. Rept. Aeronautical Research Committee, 1924-25, Vol. 2, London, 1926, pp. 458-465, tabls., diagr.

- See Hill, R. M., and H. L. Stevens: Notes on stalled flying.

--See Jones, D. A., and H. L. Stevens: The R. A. E. control movement

recorder, Mark III.

Stieber, W. Zur Anordnung von Fallbehältern und deren Rohrleitungen in Flugzeugen.

Zeitsehr. Flugt. Motorluttsch., 17. Jahrg., 8. Heft (28. April 1926), München, pp. 164-166, ill. Stinson-Detroiter. The Stinson-Detroiter. An American commercial cabin plane.

Flight, Vol. 18, No. 19 (May 13, 1926), London, pp. 283-284, ill.

Stinson-Detroiter. The Stinson-Detroiter cabin plane.

Aviation, Vol. 20, No. 13 (Mar. 29, 1926), New York, pp. 448-450, ill. Stout. Stout air transport plane.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, pp. 506-508, ill. Stout, W. B. Progress in air transportation.

Machinery, Vol. 33, No. 1 (Sept. 1926), New York, pp. 1-6, ill.

- See Dutton, W. S.: Family airplane will soon be here; interview with

W. B. Stout.

Stout, W. W. Aviation comes out of a tail spin.

Sat. Even. Post, Vol. 198 (May S, 1926), Philadelphia, pp. 3-5, ill.

Stow, Bessie Ellis. By air from Washington to New York.

u. S. Air Services, Vol. 11, No. 6 (June 1926), Washington, D. C, pp. 39-43, ill. Strahlmann, Fritz. Zwei deutsche Luftschiffhäfen des Weltkrieges: Ahlhorn und Wildeshausen.

Oldenburg i. o., Oldenburger Verlagsbaus Lindenallee, 1926. Stranbo, P. Come vola l'aeroplano.

L'Aerotecnica, Giornale ed Atti dell' Associacione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 122-133.

Streamlines. See Toussaint, A., et E. Carafoli: Contribution à l'étude de l'écoulement plan des fluides.

Stress. Expérimental stress analysis.

Flight, Vol. 18, No. 2 (Jan. 14, 1926), London, p. 22.

Stringer, H. B. Air photograph apparatus.

Engineering, Vol. 121, No. 3148 (April 30, 1926), London, p. 549. Abstract. Strother, D. H. See Eaton, Herbert Nelson, K. H. Beig, W. G. Brombacher,

W. W. Frymoyer, H. B. Henrickson, C. L. Seward, and D. H. Strother:

Aircraft instruments. Structural members. See Younger, John Elliott: Critical loading of structural

members subjected to combined axial and transverse loads. Struts. See Blyth, J. D.: Stream-line struts. Areas and moments of inertia.

- See Steinitz, Otto: Eine praktische Formel für Berechnung der Biegungsfestigkeit in schwierigen Fällen.

- See Younger, John Elliott: Strength of bent struts., ,

Studentships. See Fellowships.

Stunt flying. See Byrd, R. E., jr.: In defence of stunt flying.

Sudre, Edmond. De l'organisation d'une législation aéronautique internationale.

nie Congrès International de la Navigation Aérienne, T. 1, Paris, [19251, pp. 3-7. Sumner, Percy James Hammond. The science of flight and its practical application. Vol. 1: Airships and kite balloons.

London, Crosby Lockwood and Son. 1926, pp. rvi, 168.

Superaviation. See Crocco, G. A.: Possibilità di superaviazione.

Surveying. Air survey in Britain.

Tbe Aeroplane, Vol. 30, No. 5 (Feb. 3, 1920), London, pp. 128-129, ill, map.

- The development of aerial surveying.

Engineering, Vol. 122, No. 3174 (Nov. 12, 1926), London, pp. 595-596, ill.

- How aerial surveys are made: Mapping by air photography in British

Guiana and Rhodesia.

Illustrated London News, Vol. 169, No. 4574 (Dec. 18,1926), London, pp. 1212-1213, ill.

--Surveying by aeroplane.

Flight, Vol. 18, No. 45 (Nov. 11, 1920), London, pp. 735-736.

- See Hemming, H.: Air surveying.

- See Laws, F. C. V.: The application of air photography to surveying.

Surveying. See Riddle, Karl: Aerial surveys lend confidence on hastily organized job.

- See Weymouth, F. E. : The Brock process of making topographic surveys

from the air.

- See Winterbotham, H. S. L.: General principles of photographic surveying.

Sustained flight. See Lanchester, F. W;: Sustentation in flight. Swallow. The new Swallow mail plane.

Aviation, Vol. 11, No. 2 (Jan. 11,1926), New York, p. 55, ill.

Swan. The supermarine "Swan" commercial flying boat.

Flight, Vol. 18, No. 24 (June 17, 1926), London, pp. 344-345, ill.

Swan, A. See Carter, B. C, and A. Swan: Torsional vibration. Sweden. See Nilson, N.-A.: L'aéronautique en Suède. Sykes, F. H. Air problems of the Empire.

Edinburgh Review, Vol. 244 (Oct. 1926), New York, pp. 264-275.

T

Tail planes. See Constantin, L.: Tail planes. Tailless airplane. The tailless aeroplane.

Engineer, Vol. 141, No. 3670 (April 30,1926), London, p. 501, ill.

- Tailless airplane is hailed as foolproof.

Pop. Mech., Vol. 46 (Sept. 1926), Chicago, p. 366, ill.

- See Dunne: The tailless aeroplane. Dunne type developed according to

modern knowledge.

- See Hill, G. T. R. : Captain Hill's lecture on the tailless airplane.

- See Hill, G. T. R. : The tailless aeroplane.

Take-off. See Pröll, A.: Die Startsrecke bei Flugzeugen.

- See Pröll, A.: Take-off distance for airplanes.

Takemura, Kango, and Yahei Hosokawa. Eye-shaped end of bar investigated by photo-elastic method.

Report of the Aeronautical Research Institute, Tokyo Imperial University, Vol. 2,4, No. 18 (July 1926), Tokyo, pp. 127-143, ill.

Talenti, Cesare. Osservazioni sanitarie su alcuni piloti durante i lanci di velivoli a mezzo di catapulta.

Rivista Aeronautica, Anno 2, N. 3 (Marzo 1926), Roma, pp. 39-46, ill. Tamaru-Takurô. Hyôzyum-Taiki, oyobi Kôdokei no Yomi no Naosi. (The standard atmosphere and the corrections to be applied to the reading of the altimeter.)

Report of the Aeronautical Research Institute, Tokyo Imperial University, Vol. 1,12, No. 12 (Sept. 1926), Tokyo, pp. 321-346, tables.

Tapsell, H. J. Some mechanical tests of cast bars of alpax.

Aeronautical Research Committee, Reports and Memoranda, No. 1011 (M. 34), Dec, 1925, London, 1926, pp. 9, tabis., diagr.

- See Gough, H. J., and H. J. Tapsell: Some comparative fatigue tests in

special relation to the impressed conditions of test.

Tarantini, Lello. Un progetto per l'aeroporto civile di Ostia.

Rivista Aeronautica, Anno 2, N. 11 (Nov. 1926), Roma, pp. 16v167, ill., map.

Tauber, Ernst. Freies Landungsrecht?

Luftweg, Jahrg. 1926, Heft 5 (10. März 1926), Berlin-München, p. 49.

- Die Freizeichnungsklausel im Luftverkehr.

Luftweg, Jahrg. 1926, Heft 18 (25. Sept. 1926), Berlin-Münchon, pp. 186-187.

- Schadenshaftung nach Welt-Luftprivatrecht.

Luftweg, Jahrg. 1926, Heft 6 (25. März 1926), Berlin-München, pp. 64-65.

Taylor, C. Fayette. Carburetors for aircraft engines.

Aviation, Vol. 20, No. 10 (Mar. 8,1926), New York, pp. 326-327, diagr.

- History of the aeronautical engine.

Aviation, Vol. 21, No. 7 (Aug. 16,1926), New York, pp. 284-286, ill. Taylor, David Watson. Some aspects of the comparison of model and full-scale tests.

National Advisory Committee for Aeronautics, Report No. 219, March 12, 1926, Washington, Government Printing Office, 1926, pp. 23, ill., diagrs.

Tempelhofer. See Kleffel, Walther: Ein Nachwort zum Tempelhof er Flugtag. Terada, Torahiko, and Kunio Hattori. Some experiments on motion of fluids. Part I, II, and III.

Report of the Aeronautical Research Institute, Tokyo Imperial University, Vol. 2, 2, No. 16 (May 1926), Tokyo, pp. 85-112, ill.

Tests. See Mills, T. B.: How airplanes are tested.

- See Taylor, David Watson: Some aspects of the comparison of model and

full-scale tests.

Thaden, Herbert V. Impressions of second annual commercial airplane reliability tour.

U. S. Air Services, Vol. 11, No. 9 (Sept. 1926), Washington, D. C, pp. 19-21, 51.

- 210-ft. airship mooring tower at Detroit airport. With new system, a

dirigible lands passengers and freight at ground instead of at top of tower— Bow held in sliding guide as ship is hauled down—Anchor trucks restrain ship's hull.

Engineering News-Record, Vol. 96, No. 5 (Feb. 4,1926), New York, pp. 202-204, ill. Thalau, Karl. Calculation of combining effects in the structure of airplane wings. A rational basis for estimating the reduction in the design load on wing beams due to the influence of ribs and covering toward causing the beams to deflect together.

National Advisory Committee for Aeronautics. Technical Memorandums No. 366, June 10, 1926 (mimeographed), Washington, June 1926, pp. 16, ill.

From "Berichte und Abhandlungen der Wissenschaftlichen Gesellschaft für Luftfahrt," July 1925.

- Einige Anwendungen der bisher durchgeführten Untersuchungen über

Rippenverbundwirkung in Flugzeugflügelin.

Zeitschr. Flugt. Motorluftsch., 17. .Jahrg., 6. Heft (27. März 1926), München, pp. 121-129, ill.

- Zur Berechnung von Flugzeug-Tragwerken mit Verbundstielen in V-

und N-Form.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 21. Heft (13. Nov. 1926) München, pp. 456-466, ill. Thermometers. See Corrigan, J. F. : Aeroplane thermometers. Some uses for thermometers in modern aircraft.

- See Poincairé, L.: Les thermomètres à distance.

Thieffry, Edouard. En avion de Bruxelles au Congo belge. La Renaissance du livre, éditeur.

Thieffry, M. Le régime des droits réels en matière d'aéronef.

IHe Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 20-30. Thom, A. Experiments on the air forces of rotating cylinders.

Aeronautical Research Committee, Reports and Memoranda, No. 1018 (Ae. 219), Feb. 1925, London, 1926, pp. 8, tabls., diagr.

Thomas, Lowell Jackson. The first world flight; being the personal narratives of Lowell Smith, Erik Nelson, Leigh Wade, Leslie Arnold, Henry Orgden and John Harding.

Boston and New York, Houghton Mifflin Company, 1925, pp. iiii, 328, ill.

London, Hutchinson & Co., 1920, pp. 303, ills., maps.

Thomas, M. Les aérodromes en hiver.

L'Aéronautique, 8me année, No. 87 (août 1920), Paris, pp. 261-202.

Thomson, Andrew. Apia Observatory, Apia, Western Samoa, Lat. 13° 48.4' S. Long. 171° 46.5' W. Upper air observations 1923-1924. Wellington, N. Z„ 1925, pp. 31, diagrs., tables.

Thoret. Enseignements d'un voyage à travers les Alpes en avion de tourisme et d'entraînement. .

L'Aéronautique, 8me année, No. 87 (août 1926), Paris, pp. 277-278, ill.

- Une remarquable étude du lieutenant Thoret.

L'Aérophile, 34e année, Nos. 7-8 (ler-16 avril 1926), Paris, pp. 110-111, ill.

- Le vol à voile et la connaissance de l'atmosphère.

L'Aérophile, 34e année, Nos. 1-2 (ler-16 Jan. 1926), Paris, pp. 18-21, ill.

- See Jacques, P.: Comment le Lt. Thoret ravitailla l'observatoire Vallot.

- See Jacques, P.: Les deux voyages du lieutenant Thoret en avionnette

40 CV.

Thorne, Clifford. Nungesser dreams great things for the future.

TJ. s. Air Services, Vol. 11, No. 2 (Feb. 1926), Washington, D. C, pp. 43-44, ill.

Thouvenot, A. La restitution de photographies aériennes (Eléments de métro-photographie) .

Paris, E. Chiron, éditeur, 1924, pp. 142, ill.

Three engines. On the three-engined policy.

The Aeroplane, Vol. 30, No. 6 (Feb. 10,1926), London, pp. 133-134, ill.

Tietjens, O. See Prandtl, Ludwig, and O. Tietjens: Kinetographic flow pictures.

Tigiken Land. Airplane expedition to unknown land.

Weekly News Bulletin, No. 31-32 (57-58) of the USSR Society of Cultural Relations with Foreign Countries, Aug. 13, 1926, p. 2.

Tilmant, A. Les avions sanitaires et chirurgicaux et l'organisation de l'aviation sanitaire civile.

Hle Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 190-196.

---Le rôle de l'aviation dans l'organisation du service de santé en campagne.

IHe Congrès International de la Navigation Aérienne, T. 1, Paris, [1925], pp. 197-202.

Tilsher, G. A. Machining valve seats in an aeronautical engine.

Amer. Mach., Vol. 65, No. 1 (July 1, 1926), New York, pp. 21-23, ill.

Tipton, William D. Baltimore aerial survey well under way.

TJ. S. Air Services, Vol. 11, No. 12 (Dec. 1926), Washington, D. C„ pp, 44-45.

- Some notes on bombardment aviation.

TJ. S. Air Services, Vol. 11, No. 10 (Oct. 1926), Washington, D. C, pp. 33-35.

- Some notes on pursuit aviation.

U. S. Air Services, Vol. 11, No. 8 (Aug. 1926), Washington, D. C, pp. 28-30.

Tomlinson, Daniel W. Across Continent to San Diego in a Jenny.

u. S. Air Services, Vol. 11, No. 2 (Feb. 1926), Washington, D. C, pp. 37r38, ill.

Toussaint. See Garsaux, Malassez et Toussaint: Sur le vertige de rotation. Toussaint, A., et E. Carafoli. Contribution à l'étude de l'écoulement plan des fluides. '

L'Aérotochnique (L'Aéronautique, Sme année, No. 87), 4me année, No. 44 (août 1926) Paris, pp. 270-271, ill.

- Sur la théorie des ailes sustentatrices.

C. R. Acad. Sci., T. 183, No. 16 (18 oct. 1926), Paris, pp. 654-656.

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).

Aeronautical Research Committee, Reports and Memoranda, No. 976 (Ae. 190), Nov., 1925, London, 1926, pp. 4, tabls., diagrs.

Townend, H. C. H. See Baternan, H., H. C. H. Townend, and T. A. Kirkup: Experiments with a family of airscrews, including effect of tractor and pusher bodies. Part IV. On the effect of placing an airscrew in various positions within the nose of a streamline body.

- See Lock, C. N. H., H. Bateman, and H. C. H. Townend: The airflow

round a body as affecting airscrew performance.'

- See Lock, C. N. H., H. Bateman, and H. C. H. Townend: Experiments

to verify the independence of the elements of an airscrew blade.

- 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., and H. C. H. Townend: Lift and drag of two aerofoils

measured over 360° range of incidence.

- See Lock, C. N. H., and H. C. H. Townend: Photographs of the flow around

a model screw working in water, especially in the "Vortex ring state."

Townsend, C. H. T. Around the world in a daylight day; a problem in flight. '- Scientific Monthly, Vol. 22 (Apr. 1926), Garrison, N\ Y., pp. 309-311.

- See World flight: Around the world in twenty-four hours; reply to C. H.

T. Townsend.

Training. Training aircraft apprentices.

The Aeroplane, Vol. 31, No. 26 (Dec. 31, 1926), London, p. 860.

—--See Avro: Training machines.

- See Avro Gosport: The Avro Gosport training machine.

Transatlantic flight.' The Spanish Transatlantic flight. Flight, Vol. 18, No. 5 (Feb. 4, 1926), London, p. 59, ill. Maj. Franco.

Literary Digest, Vol. 88 (Feb. 13, 1926), New York, pp. 9-10, ill., map. "Travel air special." The "travel air special," an efficient American general purpose machine.

Flight, Vol. 18, No. 5 (Feb. 4, 1926), London, p. 60, ill.

Trevelyan, A. See Jones, B. M., and A. Trevelyan. Step-by-step calculations ( upon the asymmetric movements of stalled aeroplanea

Trtjscott, Starr. Airships three times the volume of the "Shenandoah." u. s. Air Services, Vol. 11, No. 5 (May 1926), Washington, D. c, pp. 33-35.

--■ New rigid airships.

Scientific Monthly, Vol. 22 (June 1926), Garrison, N. Y., pp. 547-550. TscHtrDi. Erwiderungflauf den vorstehenden Aufsatz.

Luftweg, Jahrg. 1926, Heft 8 (25. April 1926), Berlin-München, pp. 85-86. .

- Freies Landungsrecht.

Luftweg, Jahrg. 1926, Heft 1 (12. Jan. 1926), Berlin-München, pp. 8-9.

- Luftfahrzeugflaggen?

Luftweg, Jahrg. 1926, Heft 14 (25. Juli 1926), Berlin-München, p. 149.

- Wettbewerbe.

Luftweg, Jahrg. 1926, Heft 16 (25. Aug. 1926), Berlin-München, pp. 167-169. Tücker, Ray A. Honor Galbraith Perry Rodgers. Aero Club of Pittsburgh dedicates tablet.

Aviation, Vol. 21, No. 22 (Nov. 29, 1926), New York, pp. 915-916, ill. Tuckerman, Lotris Bryant. A fabric tension meter for use on aircraft, by L. B. Tuckerman, physicist, G. H. Keulegan, assistant physicist, H. N. Eaton, engineer, Bureau of Standards. July 24, 1926.

Washington, Government Printing Office, 1926, pp. 581-596, ill., diagrs. Bureau of Standards. Technologic papers, No. 320. >

Ttjckerman, Louis Bryant. Making airships safe.

Scientific Monthly, Vol. 23 (July 1926), Garrison, N. Y., pp. 74-77.

Tulasne, Joseph. Trois années d'aviation en A. 0. F.

L'Aérophile, 34e année, Nos. 3-6 (ler-15 fév., ler-16 mars 1926), Paris, pp. 54-56, 78-82, ill., ports.

- See Blanchet, Georges: Le colonel Tulasne.

Turner, J. S. The Kansas City trade air tour.

Aviation, Vol. 21, No. 3 (July 19, 1926), New York, p. 91, ill.

Tymms, F. See Edwards, Ivo Arthyr Exley, and F. Tymms: Commercial air transport.

U

Udet. The Udet four-engined machine.

The Aeroplane, Vol. 30, No. 5 (Feb. 3, 1926), London, p. 118, ill.

- The Udet "Kondor" monoplane.

Aero Digest, Vol. 8, No. 6 (June 1926), New York, p. 340, ill.

- See Wittckind, F.: Udet-Kondor.

Udet-Condor. L'avion de transport "Udet-Condor" à quatre moteurs de 100 HP.

L'Aéronatique, 8me année, No. 82 (mars 1926), Paris, pp. 117-118, ill.

Udet Kondor. The Udet Kondor airliner.

Aviation, Vol. 20, No, 18 (May 3, 1926), New York, pp. 674, 676, ill.

United States. Aeronautica militare. Stati Uniti. Difesa antiaerea. Rivista Aeronautica, Anno 2, N. 1 (gen. 1926), Roma, pp. 97-101.

- America's aviation achievements.

Aero Field, Vol. 1, No. 7 (Oct. 1926), London, pp. 146-148, map.

- American airplane specifications.

Automotive Industries, Vol. 54, No. 7 (Feb. 18, 1926), New York, pp. 328-329.

- The American national air races.

The Aeroplane, Vol. 31, No. 18 (Nov. 3,1926), London, p. 588.

- Estimated cost of the Air Services of the United States for six years.

Aviation, Vol. 20, No. 4 (Jan. 25, 1926), New York, p. 108.

- See Breguet, Jacques: L'aviation civile et postale aux Etats-Unis.

- See Jacques, P.: L'Amérique entreprend la signalisation de ses voies

aériennes. La France, de 1910 à 1914, l'avait réalisée.

- See Lehr, G. : Les moteurs d'aviation aux Etats-Unis.

United States Air Service Tactical School, Langley Field, Va. Bombardment. Washington, Government Printing Office, 1926, pp. iv, 100.

- Pursuit.

Washington, Government Printing Office, 1926, pp. vil, 123.

United States Air Service, War Department. The airplane. Prepared under direction of the chief of Air Service.

Washington, Government Printing Office, 1925, pp. 114, ill. War Department, technical regulations, No. 1440-65.

United States Army Air Corps. A history of the U. S. Army Air Corps. Aviation, Vol. 21, No. 6 (Aug. 2,1926), New York, pp. 170-173, ill.

United States Bureau of Aeronautics, Navy Department. Syllabus for the training of naval aviators—airship ... November 3, 1926. Washington, Government Printing Office, 1926, pp. 10.

United States Coast Guard. The U. S. Coast Guard air service.

The Aeroplane, Vol. 31, No. 22 (Dec. 1. 1926), London, p. 684, ill.

United States Congress. Conference Committees, 1925-1926. Air commerce act of 1926 ... Conference Report. To accompany S. 41.

Washington, Government Printing Office, 1926, pp. 14. 69th Cong., 1st sess. House. Rept. 1162.

United States Congress. House. Committee on Interstate and Foreign Commerce. Civil aviation. Report. To accompany S. 41.

Washington, Government Printing Office, 1926, pp. 10, 69th Cong., 1st scss. House Rpt. 572.

- Committee on Military Affairs. Department of defence and unification

of air service. Hearings before the Committee on Military Affairs, House of Representatives, Sixty-ninth Congress, first session. January 19 to March 9, 1926.

Washington, Government Printing Office, 1926, pp. iii, 1416, tabls., diagrs.

- Committee on Naval Affairs. To encourage development of aviation...

Report to accompany H. R. 12472.

Washington, Government Printing Office, 1926, pp. 7. 69th Cong., 1st sess. House. Report 1396.

UNiTEn States Congress. House. Inquiry into operations of the United States air services. Hearing before the Select Committee of inquiry into operations of the United States air services, House of Representatives, Sixty-eighth Congress, on matters relating to the operations of the United States air services.

Washington, Government Printing Office, 1925, pp. ii, 517.

--Report. Inquiry into operations of the United States air services.

Report of the select committee of inquiry into operations of the United States air services, House of Representatives, Sixty-eighth Congress, on matters relating to the operations of the United States air services. Under authority of H. R. 192 and H. R. 243, 68th Congress, 1st session.

Washington, Government Printing Office, 1925, pp. ii, 54, ill. 68th Congress, 2nd sess. House Report 1653.

—-— Notes, comments, and references arranged for the Committee on Military Affairs, House of Representatives. Sixty-ninth Congress, first session, on H. R. 10827, a bill to provide more effectively for the national defence by increasing the efficiency of the Air Corps of the Army of the United States, and for other purposes. May 1, 1926.

Washington, Government Printing Office, 1926, pp. ii, 168, ii, 14, tabls.

- To encourage development of aviation and secure advancement of army

aeronautics ... Report. To accompany H. R. 12471.

Washington, Government Printing Office, 1926," pp. 6. 69th Cong., 1st sess. House. Kept. 1395.

Uniteu States Congress. Senate. Committee on Commerce. The promotion of commercial aviation. Report to accompany S. 41. Washington, Government Printing Offico, 1925, pp. 8. 69th Cong., 1st sess. Senate. Rept. 2.

- Committee on Military Affairs. Reorganization of the Army Air Service.

Hearing before the Committee on Military Affairs, United States Senate, Sixty-ninth Congress, first session, on S. 2614, a bill to increase the efficiency of the Air Service of the United States Army. February 5, 1926.

Washington, Government Printing Office, 1926, pp. 50.

--Committee on Naval Affairs. Aircraft and aircraft equipment in the

navy and Marine corps. Hearings before the Committee on Naval Affairs, United States Senate, Sixty-ninth Congress, first session, on H. R. 9690, an act to authorize the construction and procurement of aircraft and aircraft equipment in the navy and Marine corps, and to adjust and define the status of the operating personnel in connection therewith. April 15 and 16, 1926.

Washington, Government Printing Office, 1926, pp. ii, 100, iv.

United States Congress. To authorize the construction and procurement of aircraft and aircraft equipment in the Navy and Marine Corps and to adjust and define the status of the operating personnel in connection therewith. Report. To accompany H. R. 9690.

Washington, Government Printing Office, 1826, pp. 6. 69tb Cong., 1st seas. Senatei Eept. 848.

ÜNiTEn States. Department of Commerce. Air commerce regulations. Effective December 31, 1926.

Washington, Government Printing Office, .1926, pp. 45, tabls.

- Civil aviation. A report by the Joint Committee on Civil Aviation of

the U. S. Department of Commerce and the American Engineering Council-New York, McGraw-Hill Book Company inc., 1926, pp. 189, maps.

- See Airways: Airway lighting units ordered by Commerce Department.

ÜNiTEn States Hydrographie Office. Naval air pilot.

Washington, Government Printing Office, 1926 (Publication No. 206).

United States Joint Army and Navy Board. Report of the Joint Board on results of aviation and ordinance tests held during June and July, 1921, and conclusions reached. Office of the chief of naval operations, Navy Department.

Washington, Government Printing Office, 1926, pp. 5. United States. President's Aircraft Board. Report of President's aircraft board November 30, .1925.

Washington, Government Printing Office, 1925, pp. 30, A1-A5, tabls.

United States War Department. Annual Report of the Secretary of War, 1926. Washington, Government Printing Office, 1926, pp. 34-âfj.

Upson, Ralph H., and Ch. de Forest Chandler. Free and captive balloons. Part I: Free balloons, by Ralph H. Upson. Part II: Captive balloons. Part III: Fabrics for gas envelopes, by Ch. de Forest Chandler.

New York, Ronald Aeronautic Library, 1926, pp. 331, ill.

Ustjelli, Celestino. Celestino Usuelli.

L'Aerotecnica, Vol. 6, N. 3 (mag.-giugno 1926), Pisa, pp. 193-198, ill., port.

V

Vàlier, Max. Der Vorstoss in den Weltenraum; eine wissenschaftlich-gemeinverständliche Betrachtung.

München and Berlin, R. Oldenbourg, 1924, pp. 94, ill., diagrs.

Valves. See Grard: Influence de la zone thermique de travail sur la selection des métaux pour moteurs d'aviation. Application aux soupapes d'échappement.

Van Ewlik, L. J. G. See Wolff, E. B., and L. J. G. Van Ewijk: Protection of

wooden airplane parts against moisture by means of varnish. Van Heyst, F. A., et H. J. van der Maas. Essais d'un frein aérodynamique réduisant la longueur de roulement d'atterrissage.

IHe Congrès International de la Navigation Aérienne, T. 2, Paris, [1925], pp. 493-497, ills., tabls.

Van Nés, W. Das Leichtflugzeug als Sport und Verkehrsmittel. Stuttgart, Union Deutsche Verlagsgesellschaft, edit., 1926.

Van Zandt, J. Parker. Faith in the future of flying.

U. S. Air Services, Vol. 11, No. 11 (Nov. 1926), Washington, D. C, pp. 11-14, ill.

- On the trail of the air mail.

Nat. Geogr. Mag., Vol. 49 (Jan. 1926), Washington, D. C, pp. 1-61, ill., map. U. S. Air Services, Vol. 11, No. 2 (Feb. 1926), Washington, D. 0., pp. 16-19, ill.

- See Gregg, Willis Ray, and J. Parker Van Zandt: The frequency of winds

of different speeds at flying levels between New York and Chicago a further analysis of the records of the air mail service.

Vanni, G. La radiotelegrafia nelT aeronautica.

L'Aerotecnica, Giornale ed Atti dell'Associazione Italiana di Aerotecnica, Numero straordinario, Pisa, 1926, pp. 246-248. Varnish. See Wolff, E. B., and L. J. G. Van Ewijk: Protection of wooden airplane parts against moisture by means of varnish.

Vatjlx, Comte de la, et Paul Tissandier. Joseph et Etienne de Montgolfier. Annonay (Ardèche), 1 vol., ill.

Vautier, Th. Formes et déformations d'ondes aériennes.

C. R. Acad. Sci., T. 183, No. 25 (20 déc. 1926), Paris, pp. 1267-1269, diagrs., tabi. Vedernikoff, A. N. An experimental investigation of the flow of air in a flat broadening channel.

Transactions of the Central Aero-Hydrodynamical Institute, No. 21,U.S. R. S. Scientific-Technical Department of the Supreme Council of National Economy, No. 137, Moscow, 1926, pp. 42, ills., diagrs., tabls.

Velocity. See Diehl, Walter Stuart: The effect of flight path inclination on airplane velocity.

Veranneman, A. L'évolution des moteurs à huile lourde et leurs applications. La Technique Moderne, T. 18, No. 15 (1er août 1926), Paris, pp. 449-460, ill.

Verchinkin, V. P. See Gorjainoff, A. A., and G. I. Kouzmin, edited by V. L. Alexandroff and V. P. Vetchinkin: Standard specification for statik tests of airplanes.

Verduzio, R. Sulla possibilità della trasvolata polare del dirigible "N. 1." L'Aerotecnica, Voi. 6, N. 3 (mag.-giugno 1926), Pisa, pp. 177-181, diagrs.

- See Congrès International delà Navigation Aérienne: IH Congresso Inter.

di Navigazione Aerea, Bruxelles, 6-10 ottobre 1925.

Verneuil, M. Sur la perméabilité des étoffes caoutchoutées.

L'Aerotechnique (L'Aéronautique, 8me année, No. 84), 4me année, No. 41 (mai 1926), Paris, pp. 169-171, diagrs.

Vertical flight. See Lamé, M.: Le vol vertical et la sustentation indépendante;

hélicoptères, gyrocoptères, avions hélicoptères. Vibration. See Carter, B. C, and A. Swan: Torsional vibration. Vickers. See Canadian Vickers: Canadian Vickers products.

ViCKERS Vendace. The Vickers Vendace.

The Aeroplane, Vol. 30, No. 11 (Mar. 17, 1926), London, p. 200, diagr.

- The Vickers "Vendace." A land or sea training biplane.

National Advisory Committee for Aeronautics, Aircraft Circulars, No. 3, Washington, May, 1926, pp. 7, ill. From "Flight," March 18, 1926.

- The Vickers "Vendace." An efficient land or sea training biplane.

Flight, Vol. 18, No. 11 (Mar. 18, 1926), London, pp. 165-167, ill., diagr.

Vickers-Wibault. The Vickers-Wibault fighter.

Aviation, Vol. 20, No. 24 (June 14, 1926), New York, pp. 911-912, ill., diagr.

- The Vickers-Wibault single-seat fighter.

The Aeroplane, Vol. 30, No. 15 (Apr. 14, 1926), London, pp. 400-401, ill., diagr.

Victory, John F. Let us all get down to work.

U. S. Air Services, Vol. 11, No. 9 (Sept. 1926), Washington, D. C, pp. 24-26.

Vincenzo, Lioy. Collegamenti aerei.

Rivista Aeronautica, Anno 2, N. 2 (feb. 1926), Roma, pp. 30-48. Vinci, Leonardo da. See Giacomelli, R. : La forma di migliore penetrazione secondo Leonardo da Vinci.

- See Hart, Ivor B.: The mechanical investigations of Leonardo da Vinci.

Vinson, Carl. See United States Congress. House. Committee on Naval

Affairs: To encourage development of aviation. . . Report to accompauy H. R. 12472.

Viscometer. The air-bubble viscometer.

Engineering, Vol. 121, No. 3150 (May 28, 1S26), London, p. 644.

Visibility. See Camiciotti, Dante: La frequenza della nebbia in Italia.

- See Duvigneaud, A. Rochon: Enquête sur l'orientation du pigeon voyageur et son mécanisme.

Vivent, Jacques. Notre aviation marchande, avec une carte générale du réseau aérien.

Paris, Sansot, 1926, pp. 168, map.

Vogt, R. Grenzen.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 10. Heit (28. Mai 1926), München, pp. 207-211.

Volla, Fernando. Schema di organizzazione di un servizio aerofotografico militare.

Rivista Aeronautica, Anno 2, N. 11 (Nov. 1926), Roma, pp. 32-40.

Vought Corporation. Vought's production record.

"Aero Digest, Vol. 9, No. 1 (July 1926), New York, pp. 42-44, ill.

W

Wache, M. Contribution à l'étude de la dissolution de l'aluminium et de ses alliages dans les acides.

Servies Technique de l'Aéronautique, Bulletin Technique, No 37, Nov. 1926, France, pp. 52, ill.

Waco. The Waco 9 commercial plane.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, p. 516, ill.

Wade, Leigh. See Thomas, Lowell Jackson : The first world flight. Being the personal narratives of Lowell Smith, Erik Nelson, Leigh Wade, Leslie Arnold, Henry Ogden, and John Harding.

Wagener, Kurt. Flugmöglichkeiten in Brasilieu.

Luitweg, Jahrg. 1926, Heit 20 (25 Okt. 1926), Berlin-München, pp. 208-209. Wagner, F. See Raethjen, P., and F. Wagner: Das zweidimensionale, atmosphärische Stromfeld um ein Hindernis, a) Problemstellung und Theorie, von P. Raethjen. b) Die Stromfeldbestimmung in Luv der Düne von Rossitten, von F. Wagner.

Wakefield, Charles. The Sir Charles Wakefield flight.

Tha Aeroplane, Vol. 31, No. 14 (Oct. 6, 1926), London, pp. 456-466, 111.

- Scholarships for flight cadets.

Engineering, Vol. 121, No. 3145 (April 9, 1926), London, p. 464.

Wakeman, S. W. The launch of the airplane-carrier U. S. S. "Lexington."

Engineering, Vol. 122, No. 3178, 3179, (Deo. 10, 17, 1926), London, pp. 737-741, 771-772, ill.

Walcott, Charles Doolittle. Samuel Pierpont Langley and modern aviation. Proc. Amer. Philos. Soo., Vol. 65, No. 2 (1926), Philadelphia, pp. 79-82.

Walker, J. B. Giant floating aircraft bases: Saratoga and Lexington. Scient. Amer., Vol. 135 (Aug. 1926), New York, pp. 104-105, ill.

Wallis, B. N. Some technical aspects of the commercial airship.

Engineer, Vol. 141, No. 3660 (Feb. 19, 1926), London, pp. 217-218, ill. Walther, P. A. Lifting forces developing on blades of hydraulic machines—II. Rotating blades.

Transactions oi the Central Aaro-Hydrodynamical Institute, No. 18, U. S. S. R. Scientific-Technical Department of the Supreme Council of National Economy, No. 118, Moscow, 1926, pp. 40, ill.

- On the flexure of beams having a double curvature.

Transactions of the Central Aero-Hydrodynamical Institute, No. 23, u. S. S. B. Scientiflc-Technical Department of the Supreme Council of National Economy, No. 146, Moscow, 1926, pp. 100, ill.

Ward, Robert De C. The present status of long-range weather forecasting. Proc. Amer. PhUos. Soc, Vol. 65, No. 1, 1926, Phiiadalphia, pp. 1-14

Ware, Marsden. Description and laboratory tests of a Roots type aircraft engine supercharger.

National Advisory Committee for Aeronautics, Report No. 230, March 23, 1926, Washiog-ton, Government Printing Office, 1926, pp. 13, ill., diagrs.

Warnemünde. Le concours d'hydravions de Warnemünde.

L'Aeronautiqua, 8me annSa, No. 88 (sept. 1926), Paris, pp. 307-311, ill.

Warner, Edward Pearson. Aerostatics.

New York, the Ronald Press Company, 1926, pp. ii, 112, diagrs.

- The engineering of the modern airplane.

Journal, Boston Society of Civil Engineers, Vol. 13, No. 7 (Sept. 1926), Bostoa, pp. 312-323, ill.

Waterhouse "Cruzair." The Waterhouse "Cruzair" monoplane. .

Aviation, Vol. 21, No. 16 (Oct. 18, 1926), New York, pp. 672-673, ill.

Waterman, Waldo D. Professional pilots association.

Aviation, Vol. 20, No. 11 (Mar. 15, 1926), Naw York, p. 369.

Watter, Michael. Bending moments obtained graphically.

Aviation, Vol. 20, No. 8 (Fab. 22, 1926), New York, pp. 254-256.

Waziristan. »See Military aeronautics: Bombing villages; a British army report; operations in Waziristan.

Weather. »See Ward, Robert De C: The present status of long-range weather forecasting.

Wehner, O. Erkennungszeichen für Flughäfen und Landeplätze.

Luftweg, Jahrg. 1926, Haft 13 (10 Juli 1926), Berlin-München, pp. 135-136.

Wehrle. La mesure de l'altitude en avion.

Ille Congres International de la Navigation Aerienna, T. 2, Paris, 1925, pp. 157-162. Weick, Fred E. Navy propeller section characteristics as used in propeller design.

National Advisory Committee for Aeronautics, Technical Notes No. 244, Aug. 17, 1926 (mimeographed), Washington, August 1926, pp. 7, diagrs.

- Propeller design. Practical application of the blade element theory—I.

National Advisory Committee for Aeronautics, Technical Notes No. 235, May II, 1926 (mimeographed), Washington, May 1926, pp. 14, tables, diagrs.

- Propeller design. Extension of test data on a family of model propellers

by means of the modified blade element theory—II.

National Advisory Committee for Aeronautics, Technical Notes No. 236, May 18, 1926 (mimeographed), Washington, May 1926, pp. 8, diagrs.

- Propeller design. A simple system based on model propeller test data—

III.

National Advisory Committee for Aeronautics, Technical Notes No. 237, May 25, 1926 (mimeographed), Washington, May 1926, pp. 18, tables, diagrs.

- A simple method for determining the strength of propellers—IV.

National Advisory Committee for Aeronautics, Technical Notes No. 238, June 3, 1926 (mimeographed), Washington, June 1926, pp. 11, diagrs., table.

Weidinger, Hanns. Profilwiderstandsemessungen an einem Junkers-Tragflügel. Anwendung des Betzschen Verfahrens auf vergleichende Messungen am Modell und am flieganden Flugzeug.

Berichte und Abhandlungen der Wissenschaftichen Gesellschaft für Luftfahrt E. V. (WGL) 14. Haft, Dez. 1926, München uod Barlin, 1926, pp. 112-125, ills, diagrs., tables.

Weil, A. Die Motoren vom Deutschen Seeflug-Wettbewerb 1926.

Luftweg, Jahrg. 1926, Heft 14 (25. Juli 1926), Berlin-München, pp. 145-146.

Weiss, Pierre. »See Blanchet, Georges: Aviateurs contemporains. Pierre Weiss, Roger Latapie.

Welding. »See Bissell, A. G.: Electric arc welding in airplane construction.

Welding. See Bissell, A. G.: La soudure électrique dans la construction et la

réparation des avions. Wells, Linton. America and air transport.

Aviation, Vol. 21, No. 23 (Dec. 6, 1926), New York, pp. 956-957, 111.

- Around the world in twenty-eight days; with an introduction by Vilhjal-

mur Stefansson.

Boston and New York, Houghton Mifflin Company, 1926, pp. uiv, 276, ill., ports.

Wendboth, H., and G. Wolle. Aufbau und Eigenschaften des DVL-Beschleu-nigungsschreibers YV.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 24. Heft (28. Dez. 1926), München, pp. 532-534, ill.

Wbntscheb, Bruno. L'aeronautica tedesca.

Berlin, Editore Deutscher Wille. Q. m. h. H., 1925, pp. 139, 111.

Wernekke. Der französische Flugverkehr.

Luftweg, Jahrg. 1926, Heft 18 (25. Sept. 1926), Berlin-München, pp. 188-189.

- Vom englischen Flugverkehr.

Luftweg, Jahrg. 1926, Heft. 18 (25. Sept. 1926) Berlin-München, pp. 187-188. Weymouth, F. E. The Brock process of making topographic surveys from the air.

Engineering, Vol. 121, No. 3138 (Feb. 19, 1926), London, pp. 245-248, ill.

Whipple, F. j. W. Audibility of explosions and the constitution of the upper atmosphere.

Nature, Vol. 118, No. 2965 (Aug. 28, 1926), London, pp. 309-313, ill. Whirlwind Engines. Increasing commercial demand for Wright Whirlwind. TJ. S. Air Services, Vol. 11, No. 2 (Feb. 1926), Washington, D. C. pp. 35-36.

- See Wright engines: Wright Whirlwind engines.

Whitbeck, j. E. Lighting for night flying.

Aero Digest, Vol. 9, No. 2 (Aug. 1926), New York, pp. 89, 163, ill

- Operation of the air mail lines. Its possible application to other commercial airlines.

Aero. Digest, Vol. 8, No. 4 (Apr. 1926), New York, pp. 185-187, 240-241, ill.

Whitlock, W. T. A tribute to the air mail service.

Aviation, Vol. 21, No. 12 (Sept. 20, 1926), New York, pp. 512, 514.

White, Wilbert W. The American dead in France.

V. S. Air Services, Vol. 11, No. 2 (Feb. 1926), Washington, D. C, pp. 21-24, ill.

Whitehouse, Mrs. Norman De R. See Greene, Howard E.: Society woman makes Army flying suits.

Wibault. See Serryer, J.: Wibault two-seat monoplane 8C2. An all-metal pursuit, and observation airplane.

Wiederhold, Hasso. See Rühl, Karl, and Hasso Wiederhold: Albatross-Verkehrsflugzeug L 73.

Wien, Noel. Alaskan flying.

Aero Digest, Vol. 9, No. 5 (Nov. 1926), New York, pp. 354-355, 409, ill., map.

- Flying advertures in Alaska.

Aviation, Vol. 20, No. 15 (Apr. 12, 1926), New York, pp. 557-558.

Wiener. Was wird aus der "Deutschen Luft-Hansa."

Luftfahrt, 30. Jarhg., N. 4 (20. Feh. 1926), Berlin, pp. 49-50.

Wieselsberger, C. Linien konstanter Strömungsgeschwindigkeit.

Report of the Aeronautical Research Institute, Tòkyo Imperial University, Vol. 2, 3, No. 17 (June 1926), Tokyo, pp. 113-125, ill.

Wigand. Die elektrischen Gefahren des Luftschiffverkehrs.

Zeitschrift für Technische Physik, Vol. 7, No. 5, 1926, Leipsic, pp. 238-239.

Wilbur, Curtis D. Aeronautics with the Navy.

Aviation, Vol. 20, No. 23 (June 7, 1926), New York, pp. 868-871, ill.

Wilbur, Curtis D. American achievement in aviation.

Current History Magazine, N. Y. Times, Vol. 23 (Jan. 1926),.New York, pp. 457-169.

- The Secretary of the Navy reports on aviation.

Aviation, Vol. 21, No. 26 (Dec. 27, 1926), New York, pp. 1074-1975.

Williams, Archibald. Conquering the air.

London, T. C. & E. C. Jack, Ltd., 1928, pp. 315, ill., diagr. New York, T. Nelson and Sons, 1928, pp. xiv, 315, ill.

- Speed wings.

Sat. Even. Post, Vol. 199 (Oct. 30-Nov. 6, 1920), Philadelphia, pp. 10-11, 43-15, ill.

Williams, C. L. Looking for holes in the sky.

Aero Digest, Vol. 9, No. 3 (Sept. 1926), New York, pp. 184-185, ill. Discontinuous flow around the edge of a bluff obstacle. Williams, D. H. See Bryant, L. W., and D. H. Williams: Discontinuous flow around the edge of a bluff obstacle.

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

air around an aerofoil of infinite span.

- See Bryant, L. W., and D. H. Williams. On the effect of inertia on the

lateral motion of an aeroplane under the inSucnec of gusts and control movements.

Wilson, E. E. Air-cooled and water-cooled engines.

U. S. Air Services, Vol. 11, No. 6 (June 1926), Washington, D. C, pp. 35-38, ill.

- Navy air-cooled engine development.

Aviation, Vol. 21, No. 2 (July 12, 1928) New York, pp. 59-61.

- Power plant aspects of the National Air Races.

Aviation, Vol. 21, No. 13 (Sept. 27, 1928), New York, pp. 543-544, ill.

- Steam power plants in aircraft.

National Advisory Committee for Aeronautics, Technical Notes No. 239, June 15, 1926 (mimeographed), Washington, June 1926, pp. 30, ill.

- The trend of aircraft engine development.

Journal of the American Society of Naval Engineers, Vol. 38, No. 1 (Feb. 1926), Washington, D. C, pp. 130-143, ill.

Wilson, J. A. Canada from the air.

Nat. Geogr. Mag., Vol. 50 (Oct. 1926), Washington, D. C, pp. 389-466, ill., map.

Wimperis, H. E. The relation of physics to aeronautical research.

Joum, Roy. Aer. Soc., Vol. 30, No. 191 (Nov. 1926), London,' pp. 668-675. Engineer, Vol. 141, No. 3674 (June 11, 1926), London, pp. 126-127, ill. Engineering Vol. 121, No. 3153 (June 18, 1926), London, pp. 730-731.

- The relationship of physics to aeronautical research.

Nature, Vol. 117, No. 2956 (June 19, 1928), London, pp. 860-862.

From a lecture, Institute of Physics, Royal College of Science, South Kensington, on June 7, 1926.

—— The rotating wing in aircraft.

Engineering, Vol. 122, No. 3162 (Aug. 20, 1926), London, pp. 246-248, ill. Wimplinger. Die Arbeitsweise der Flugmotorenvergaser.

Motorwagen, 29. Jahrg., Nr. 17 (20. Juin 1926, Berlin, pp. 375-377, ill. Wind. See Betz, Albert: Wind-energie und ihre ausnutzung durch Windmühlen.

- See Dryden, Hugh L., and George C. Hill: Wind pressures on structures.

- See Gregg, Willis Ray: The wind factor in flight: An analysis of one

year's record of the air mail.

- See Oddone, Emilio: II vento e le isobare vanno soggette al fenomeno

della refrazione.

- See Riley, John A.: The winds of Oklahoma and east Texas.

- See Sabinin, G.: Problems of utilizing of energy of wind III. Windmill

characteristics as affected by the direction of wind.

Wind. See Vautier, Th. : Formes et déformations d'ondes aériennes.

Wind pressure. Wind pressure on structures.

Engineering, Vol. 122, No. 3163 (Aug, 27, 1926), London, p. 268. Wind tunnels. See Dryden, Hugh L., and R. H. Heald: Investigation of turbulence in wind tunnels by a study of the flow about cylinders.

- See Gabbrielli, G. : II canale del vento dell' Istituto di Aerodinamica del

Politecnico di Aachen.

- See Japan: The Wind Tunnel Committee of the Aeronautical Council of

Japan. The resistance of the airship models measured in the wind tunnels of Japan.

- See Lyons, P. M.: Wind tunnel test for elevator hinge moment coefficients

on the horizontal tail surface No. 5 with balanced elevator.

- See Miller, Wm. H.: The N. Y. University wind tunnel.

- See Münk, Max Michael, and Elton W. Miller: The variable density

wind tunnel of the National Advisory Committee for Aeronautics.

--See Vedernikoff, A. N. : An experimental investigation of the flow of air

in a flat broadening channel. Wing loading. See Records: Wing loading and world's records.

Wings. Cabins in airplane's wings for transatlantic flight.

Pop. Mectt., Vol. 45, No. 2 (Feb. 1926), Chicago, pp. 188-189, ill.

- See Albatross: The Albatross L.72a. A German newspaper carrier with

slotted wings.

- See Biezeno, C. B., J. J. Koch und C. Koning: Ueber die Berechnung

vom freitragenden Flugzeugflügeln.

- See Airfoils.

- See Chapligin, S. A.: On the action of the two dimensional airstream on a

cylindrical aerofoil moving in it.

- See Girault, Maurice: Sur une construction très générale des profils

d'ailes par transformation conforme d'un cercle.

- See Handley-Page, Frederick: Tests on an aerofoil with two slots suitable for an aircraft of high performance.

- See Höhndorf, F. : Verfahren zur Berechnung des Auftriebes gegebener

Tragflächen-Profile.

- See Iurieff, B. N. : The theory of the induced drag of aerofoils.

- See Münk, Max Michael, and Elton W. Miller: The aerodynamic characteristics of seven frequently used wing sections at full Reynolds number.

--See Pasqualirii, C: Sulla ripartizione délia portanza e le caratteristiche

di un' ala di lunghezza finita. --See Pris, R. : Résistance minimum des ailes à génératrices rectilignes.

- See Reid, Elliott G.: Pressure distribution over thick tapered airfoils,

N. A. C. A. 81, U. S. A. 27 C modified and U. S. A. 35.

- See Shook, Clarence Albert: The distribution of lift over thin wing sections.

--See Sinnatt, 0. T.: Aerofoils.

--See Slotted wings: On the slotted wing again.

- See Slotted wings: Velivolo sperimentale con ala a fessura.

- See Thalau, K.: Calculation of combining effects in the structure of airplane wings.

--See Toussaint, A., and E. Carafoli: Sur la théorie des ailes sustentatrices.

Wings. »See Wolff, E. B., and C. Koning: Tests for determining the effect of a rotating cylinder fitted into the leading edge of an airplane wing.

- «See Wrinch, D. M.: On the pressure distribution round certain aerofoils

of high aspect ratio.

Winter. Flying in winter.

Aviation. Vol. 20, No. 10 (Mar. 8, 1926), New York, p. 335, ill.

Winter, A. A. Keeping the pace.

Ladies' Home Journal Vol. 43 (Apr. 1926), Philadelphia, p. 39.

- Spirit of youth in the air.

Ladies' Home Journal, Vol. 43 (Mar. 1926), Philadelphia, pp. 8-9, ill.

Winterbotham, H. S. L. General principles of photographic surveying. Engineering, Vol. 121, No. 3132 (Jan. 8,1926), London, p. 40.

Wireless. Wireless equipment of the airship "Norge I."

Engineering, Vol. 121, No. 3147 (April 23, 1926), London, p. 538.

- The wireless equipment of the Dornier-Wal seaplane " Ne Plus Ultra."

Flight, Vol. 18, No. 9. (Mar. 4, 1926), London, pp. 133-134, diagr.

- Wireless equipment of the "Norge" airship.

Flight, Vol. 18, No. 17 (Apr. 29, 1926), London, pp. 255-256, ill.

- Un récepteur moderne de T. S. F.

L'Aérophile, 34a année, Nos. 17-18 (ler-15 sept. 1926), Paris, p. 282, ill.

- «See Franck, P. : Equipement électrique et T. S. F. à bord des avions.

- «See Homburg, Robert: Aviation et T. S. F.

- «See Radio.

- «See Sinclair, D.: The development of civil aviation wireless.

Wissenschaftliche Gesellschaft für Luftfahrt. Digest of some of the speeches

made at the fifteenth regular meeting of the "Wissenschaftliche Gesellschaft für Luftfahrt" June 17, 1926, in Düsseldorf, Germany.

National Advisory Committee for Aeronautics, Technical Memorandums No. 379, Sept. 17, 1926 (mimeographed), Washington, Septemher 1926, pp. 15.

From "Zeitschrift für Flugtechnik und Motorluftschiflahrt" July 14, 1926.

- Grosser Luftverkehrs-Atlas. Bearb. und hrsg. unter Mitwirkung der

Wissenschaftlichen Gesellschaft für Luftfahrt E. V. (WGL), Berlin, und unter Benutzung der Unterlagen der Deutschen Lufthansa, A.-G., Berlin.

Barlin-Leipzig, Verlag für Börsen-und Finanzliteratur, 1926, pp. 165, ill.

- Jahrbuch der Wissenschaftlichen Gesellschaft für Luftfahrt 1925.

München-Berlin, 1926.

- Jahrbuch der Wissenschaftlicken Gesellschaft für Luftfahrt 1926.

Bericht und abhandlungen der Wissenschaftlichen Gesellschaft für Lufthart, 14. Heft, Dec. 1926.

- III. Kurzer Bericht über den Verlauf der XV. Ordentlichen Mitglieder-Versammlung der Wissenschsftlichen Gesellschaft für Luftfahrt (WGL) vom 16. bis 20. Juni 1926 in Düsseldorf.

Berichte und Ahhandlungan der Wissenschaftlichen Gesellschaft für Luftfahrt E. V. (WGL), 14. Heft, Dez. 1926, München und Berlin, Verlag von B. Oldenbourg, 1926, pp. 17-22.

- »See Scheve, G. v.: Bericht über den Verlauf der XV. Ordentlichen

Mitgliederversammlung der Wissenschaftlichen Gesellschaft für Luftfahrt (WGL) vom 16.-20. Juni 1926 in Düsseldorf.

Wissler. Two new Wissler airplanes.

Aviation, Vol. 20, No. 21 (May 24,1926), New York, pp. 792-794, Dl.

Wittekind, Fritz. Sport-und Verkehrsfliegerei.

Braunschweig und Hamburg, G. Westermann, 1926, pp. 242, ill.

- Udet-Kondor.

Luftfahrt, 30. Jahrg., Nr. 3 (5. Fabr. 1926), Berlin, pp. 37-38, ill.

Wolff, E. B., and C. Koning. Essais tendant á determiner l'influenoe d'un cylindre rotatif, adapté á un profil d'aile;

lile Congrés International de la Navigation Aérienne, T. 2, Paris, [1926], pp. 477-492. ill., disgrs., tabls.

Wolff, E. B., and L. J. G. Van Ewijk. Protection of wooden airplane parts against moisture by means of varnish.

National Advisory Committee for Aeronautics, Technical Memorandums No. 348, Feh. 5, . 1926 (mimeographed), Washington, February, 1926, pp. 23, tahles, diagrs.

From "Verslagen en Verhandelingen van den Rijks-Studiedienst voor de Luchtvaart," Part III, 1925, Report M 14 A.

Wolff, E. B., and C. Koning. Tests for determining the effect of a rotating cylinder fitted into the leading edge of an airplane wing.

National Advisory Committee for Aeronautics, Technical Memorandums No. 354, March 18,1926 (mimeographed), Washington, March, 1926, pp. 15, ills., diagrs., tables..

From a preprint of Report A. 105 of the "Rijks-Studiedienst voor de Luchtvaart," Amsterdam.

Wollb, G. See Wendroth, H., und G. Wollé: Aufbau und Eigenschaften des DVL-Beschleunigungsschreibers YV.

Wombwbll, Albebt. Captain Albert Wombwell.

The Aeroplane, Vol. 30, No. 20 (May 19, -1926), London, pp. 478-480, ill.

Women aeronauts. Some early women aeronauts.

Aero Field, Vol. 1, No. 2 (May 1926), London, pp. 34-36, 46, ill. '■ Woon, R. McKinnon. See Anderson, E. P., L. E. Caybill, and R. McKinnon Wood: Full scale and model measurements of lift and drag of- Bristol Fighter with R. A. F. 32 wings. Woons, Baldwin Munger, and J. E. Younger. An investigation of the influence of pitch on the performance of an air propeller when its slipsteam is obstructed. ,

Berkeley, California, University of California Press, 1920, pp. 211-236, ill., tabls., diagrs. University of California Publications in Engineering, Vol. 2, No. 7.

Woodson. Woodson commercial airplanes.

Aviation, Vol. 21, No. 9 (Aug. 30, 1926), New York, pp. 368-374, ill.

Woodward, W. E.,- The meallography of steel and cast iron. London, Crosby Lockwood, 1926.

Woolley, James G. Careful management and right equipment make commercial airways successful.

U. S. Air Services, Vol. 11, No. 12 (Dec. 1926), Washington, D. C pp. 27-28.

World flight, Around the world in twenty-four hours; reply to C. H. T. Townsend. ,

Scientific Monthly, Vol. 22 (May 1926), Garrison, N. Y., pp. 469-472.

-- See. Thomas, Lowell Jackson: The first world flight as related by Lieutenants Smith, Nelson, Wade, Arnold, Harding, and Ogden to Lowell Thomas.

- See Townsend, C. H. T.: Around the world in a daylight day; a problem

in flight.

- See Wells, Linton: Around the world in twenty-eight days; with an

introduction by Vilhjalmur Stefansson.

Worobjeff, A. Uber eine Beziehung fiir Starrluftschiffe.

Zeitschr. Flugt. Motorluftsch., 17. Jahrg., 8, Heft (28. April 1926), Miinchen, pp. léele?, ill.

Wright, S. J. See Gough, H. J., D. Hanson, and S. J. Wright; The behavior of single crystals of aluminium uuder static and repeated stresess.

- 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, S. J. See Cough, H. J., D. Hanson, and S. J. Wright: Some further experiments on single crystals of aluminum employing reversed direct stresses.

— See Gough, H. J., S. J. Wright, and D. Hanson: Some further experiments on the behavior of single crystals of aluminium under reversed torsional stresses.

— See Gough, H. J., S. J. Wright, and D. Hanson: A test on a specimen consisting of three crystals under reversed torsional stresses.

Wright, T. P. The durability of metal propellers.

Aviation, Vol. 21, No. 17 (Oct. 25, 1926), Now York, p. 706, diagr.

V. S. Air Services, Vol. 11, No. 11 (Nov. 1926), Washington, D. C, pp. 29-30.

Wright Apache. The Wright Apache shipboard fighter.

Aviation, Vol. 20, No. 5 (Feb. 1, 1926), New York, p. H7, ill.

- The Wright Apache single-seat shipboard fighter.

U. S. Air Services, Vol. 11, No. 3 (Mar. 1926), Washington, D. C, p. 34, ill.

Wright-Bellanca. Wright-Bellanca monoplane.

Aviation, Vol. 20, No. 14 (Apr. 5, 1926), New York, p. 512, ill.

- The Wright-Bellanca six-seater. An American commercial cabin

machine.

Flight, Vol. 18, No. 1 (Jan. 7, 1926), London, pp. 10-11, ill. Wright Brothers. See Flying: Story of the first flight.

- «See Law, F. H.: Wilbur and Orville Wright, inventors of the airplane.

Wright engines. Wright Whirlwind engines.

Aero Digest, Vol. 9, No. 3 (Sept. 1926), New York, pp. 201-202, 222, ill.

- See Whirlwind engines.

Wright-Morehouse. Wright-Morehouse light engine.

Aero Digest, Vol. 8, No. 2 (Feb. 1926), New York, pp. 72-73, ill., diagr.

- The Wright-Morehouse 25-30 hp. airplane engine.

Aviation, Vol. 21, No. 8 (Aug. 23,1926), New York, pp. 329-331, diagr.

Wright Simoon engine. The Wright Simoon air-cooled engine. Aviation, Vol. 20, No. 5 (Feb. 1, 1926), New York, p. 151, ill.

Wrinch, D. M. On the pressure distribution round certain aero-foils of high aspect ratio.

Journ. Roy. Aer. Soc, Vol. 30, No. 182 (Feb. 1926), London, pp. 129-141, diagr.

Wronskt, Heinz. Einiges über den Flughafen Le Bourget.

Luftweg, Jharg. 1926, Heft 6 (10 März 1926), Berlin-München, pp. 61-62, ill.

Wther, Harold J. Rickenbacker engine test-flown.

Aero Digest, Vol. 9, No. 4 (Oct. 1926), New York, pp. 294, 332, ill.

Y

Y-allots. The age hardening of Y-alloys.

Engineering, Vol. 122, No. 3174 (Nov. 12, 1926), London, p. 605.

- See Heron, S. D.: The age hardening of "Y" alloy.

Yamaguti, Bunnosuke. See Kano, Yosihiko, and Bunnosukc Yamaguti: On the contents of helium and other constituents in the natural gases of Japan.

Yorkshire. The Yorkshire air pageant.

The Aeroplane, Vol. 31, No. 4 (July 28, 1926), London, pp. 130-132, ill.

Young, Kennedy. Wings of the Rising Sun.

Aero Digest, Vol. 8, Nos. 1-2, (Jan.-Feb. 1926), New York, pp. 9-12, 46-48, 67-70,106-107, ill. Younger, John Elliott. Critical loading of structural members subjected to combined axial and transverse loads.

Air Corps Information Circular, Vol. 6, No. 581 (Dec. 1, 1026), Washington, Government Printing'Offlce, 1926, pp. 7, ill.

106659—28-11

Younger, John Elliott. Strength of bent struts.

Air Corps Information Circular, Vol. 6, No. 580 (Dec. 1, 1926), Washington, Government Printing Office, 1926, pp. 5, ill.

- Theory of aeroplane structural members subjected to combined axial and

nonuniform transverse loads.

University of California, Publications in engineering, Vol. 2, No. 8, Berkeley, pp. 237-275, ill.

--• See Woods, Baldwin Munger, and J. E. Younger: Investigation of the

influence of pitch on the performance of an air propeller when its slipstream is obstructed.

Z

Zahm, Albert Francis. Pressure of air coming to rest from various speeds.

National Advisory Committee for Aeronautics, Report No. 247, Oct. 29,1926, Washington, Government Printing Office, 1926, pp. 7, diagrs., ill., tabl. Zénith. La Coupe Zenith de consommation.

L'Aérophile, 34e année, Nos. 13-14 (ler-15 juil. 1926), Paris, pp. 207-208, ill.

•—■— Les études de la Société Zénith, les progrés de ses carburateurs et de leurs applications.

Hirschauer, L., et Ch. Dollfus: L' année aéronautique 1925-1926. Paris, Dunod, éditeur, 1926, pp. 309-334, ill.

Zeppelins. See Airships: Zeppelin express cruiser.

- See Lehmann, E. A.: The safety of the Zeppelin airship.

Zimmerman, M. M. Traveling by air in Colombia.

Aviation, Vol. 20, No. 16 (Apr. 19,1926), New York, pp. 590-592, ill.


www.Pennula.de | Markus Lenz | Frankfurt am Main | Kontakt | Statistik | Impressum | YouTube