693 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 55 



PuGUEscHi, U. Intorno alle vernici aerostatiche. 



Boll. Soc. Aer. Ital., Anno HI, N. 10-12 (Ott.-Dic. 1906), Roma, pp. 270- 

 275. S (10030 



PuLViscHio (IL) atmosferico. 



Boll. Soc. Aer. Ital., Anno III, N. 7-9 (Lugl.-Sett. 1906), Roma, pp. 258. S (10031 



Purification^ (The) of hydrogen by liquid air. 



Agr. Journ., Vol. 8, No. 30, 1904, London, pp. 43. S (10033 



PuYSEXJOB, de; Gttffroy. Co:\ite H. de la Vaulx, E. Alam.\(v\y. See 72S0. 



Pynchon, PJdwin. High explosives as a means of propulsion in aerial navi- 

 gation. 



Transportation, Vol. 3, No. 2 (Oct. 1894), New York, pp. 17-21, ill. S (10033 



Ptrenaen. See 1291. 



QUAMBUSH, BwALD. Das neue lenkbare Luftschiff und einiges uber Luft- 

 technik. 



Eine Flugschift. Selbstverlag des Verfassers, pp. 12. (10034 



QuARTEEMAiN. Ecouomy of energy in old flying machines. 



Engl. Mech. World Sci., Vol. 58, 1894, London, p. 332. (10035 



QuARTERMAiN, W. The air navigated by man upon the principles adopted by 

 the Creator for sustaining all flying animals. 



London, 1860, 8°, pp. 104. (10036 



. The expansive force of gun-powder as a motive power; and a descrip- 

 tion of the engine and car suitable for its application to air navigation. 



London, 1859, 12°, pp. 12, pi. 2. (100.37 



QuARTEBMAiNE. On the angle of impact of the air on surface. 



Filth Annual Report of the Aeronautical Society of Great Britain, 1870, Green- 

 wich, pp. 54-65. S (10038 



QuATBifeME conference de la commission internationale pour I'aerostation 

 scientifique pres rAcadernie Imperiale des Sciences de St. Petersbourg 29 

 aout — 3 septembre 1904. Proces-verbaux des seances et memoires. 



St. -Petersbourg, 1905, pp. 1-211. (1003J* 



Queen Margherita Cup. 



Ballooning and Aeronautics, Vol. 1, No. 1 (Jan. 1907), London, p. 22. S (10040 



Quelques silhouettes des vainqueurs probables. 0. Erbsloh, Victor de Beau- 

 clair, Alfred K. Huntington, Charles Stewart Rolls, Egon Mensing, Celec- 

 tino Usuelli, Victor Niemeyer, Albert Crombez. 



La Conq. I'Air, 4« ann6e. No. 19 (oct. 1907), Bruxelles, pp. 3-4, port. 

 8. S (10041-10042 



QuENTiN. Nouvelles experiences sur I'aviation. 



Electiicite, T. 18, 1894, Paris, p. 115. (10043 



