680 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL, 55 



[POLACSEK, Josef. 1 Josef Polacsek. 



Wien. Luftsch. Zeit., IV Jahrg., Nr. 2 (Feb. 1905), Wien, p. 34, ill. S (0868 



PoLARFORscHUNG und Meteorologie. 



Wien. Luftsch. Zeit., VI Jahrg., Nr. 9 (Sept. 1907), Wien, pp. 183-184. S (0869 



Polar message balloons. 



Aer. World, Vol. 1, No. 8, 1903, Glenville, Ohio, p. 189. S (9870 



Pole. Aerial navigation. 



Engineering, Vol. 41, 1886, London, p. 208; Nature, Vol. 33, 1886, London, p. 

 444. (0871 



. Aerial navigation. 



Proceedings Institution Civil Engineers, Vol. 81, 18S5, London, p. 233. (987JS 



. Aerial navigation. 



Van Nostr. Eel. Eng. Mag., Vol. 27, 1882, New York, p. 1. (9873 



Pole, W. Sur la resistance de I'air au point de vue de la navigation aerienne. 



1886, 4°, pp. 2. (9874 



. The Chicago conference on aerial navigation. 



London, 1896, 8% pp. 1-14. S ' (9875 



. The Chicago conference on aerial navigation. 



Fortnightly Review, No. 169, N. S. (.Jan. 1881), London, pp. 77-92; Minutes of 

 Proceedings Institution Civil Engineers, Vol. 67, Session 1881-1882, London, p. 369, 

 and Vol. 81, Session 1884-1885, p. 233. (9876 



Pole, William. A study of the problem of the aerial navigation. 



London, publ. by the Institution of Civil Engineers, 1882, 8°, pp. 28, fig. 1. (9877 



• — — . A study of the problem of aerial navigation, as affected by recent 

 mechanical improvements. 



Sixteenth Annual Report of the Aeronautical Society of Great Britain, 1881, Green- 

 wich, pp. 42-76, ill. S (9878 



. Further data on aerial navigation. 



London, 1885, 8°, pp. 1-10. S • (9879 



PoLi, G. Saverio. Elementi di Fisica sperimentale. (Contenant les articles 

 relatifs aux machines aerostatiques.) 



Venise, P. Q. Mario, T. 3, 1798, pp. 249-258, pi. 1. (9880 



PoLis, P. Die Wetterlage. 



111. Aer. Mitt., XII Jahrg., 21 Heft (Okt. 1908), Berlin, pp. 649-652, chs. 

 4. WB (9881 



. Ueber die wissenschaftlichen Ballontahrteu und deren Bedeutung fiir 



die Physik der Atmosphare. 



Naturwissenschaftlichen Gesellschaft zu Aachen, 1896, pp. 1-27, ill. S (088^ 



PoLLi, G. Bemerkungen iiber die Mittel, den Luftbalion zu dirigiren, 



Dingl. Polyt. Joum., Band LXXIX, 1841, Stuttgart, p. 11, ill. (9883 



