378 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 55 



Emden, R. See 6512, 8692. 



. Theoretlsche Grundlagen der Ballonfiihrung. 



111. Aer. Mitt., Nr. 3 (Juli 1901), Strassburg, pp. 77-89, pi. 1. S (4027 



. The physical properties of gases. 



Moedebeck, H. W. L., Pocket Book of Aeronautics, 1907, London, pp. 1-11. S (4038 



Emery, J. and Haeriman, Jr. See 5772. 



Empire (The) of the air. Gives an illustrated description of the airship used 

 by M. Dumont in his last attempt to secure the Deutsch prize. 



Autom. Journ. (Aug. 1901), London. (4020 



Employment of explosives as a motive force. 



L'Aeronauta, Anno I, N. 8 (Aprile, Maggio 1897), Milano, pp. 111-114. (4030 



Emulation aerostatique du nord. Fondee en 1886. Grand concours inter- 

 national d'atterissage. Organise a Lille, le Dimanche 20 juin 1909 au 

 Champ-de-Mars. 



La Conq. I'Air, 6^ annfe. No. 9 (inai 1909), Bruxelles, p. 6. S (4031 



En ballon de Bale k Londres. (Nouvelles d'Allemagne.) (Ballon " Ziegler.") 



La Conq. I'Air, i^ annee. No. 22 (nov. 1907), Bruxelles, p. 3. S (4033 



En ballon dirigeable. 



L'Afironaute, 31'' annoo. No. 9 (sept. 1898), Paris, pp. 205-209. S (4033 



Encouragement of interest in aviation. 



Aeronautics, Vol. 3, No. 2, 1908, New York, p. 3. S (4034 



Encyclopedie methodique. Arts et metiers mecaniques. Tome VIII. 

 Theorie des aerostats. 



1786-1791, 8 tomes en 16 vols., 4°. (4035 



Ende (Das) der " Patrie." 



Wien. Luftsch. Zeit., VII Jahrg., Nr. 1 (.Jan. 1908), Wien, pp. 8-10. S (4036 



End of M. Roze's airship. 



Aer. World, Vol. 1, No. 9, 1903, Glenville, Ohio, p. 206. S (4037 



" Energique (L')." Bee 9761. 



Engel. See 9323. 



Engelbrethsen, Peter. History of aerial navigation. (Norw.) 



Naturen, Band XXVI, 2860, 1902, Bergen, pp. 28-46, figs. 9. S (4038 



" Engineer." Pointers on mechanical flight. 



Aer. V^^orld, Vol. 1, No. 8, 1903, Glenville, Ohio, p. 174. S (4039 



Engineeeing materials for the aeronaut. 



Prac. Eng. (Sept. 28, 1894), London. (4040 



England. See Great Britain. 



