792 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 55 



Spese per aeronautica sostenute da alcune nazioni nell' anno 1908. 



Riv. Techn. Aer. Boll. Soc. Aer. Ital., Anno VI, N. 4 (Aprile 1909), Roma, pp. 

 148-149. S (11437 



Speth, von. Der Ungliickstag von Bchterdiugen. 



111. Aer. Mitt., XII Jahrg., 18 Heft (Sept. 1908), Berlin, pp. 529-531, figs. 

 2. WB (11428 



" Spezia." a British-built airship. 



Flying, No. 3 (.June 1902), London, p. 142. S (lt4'2U 



Spielberg, H. von. Der Luftballon im Kriege. 



Bibliothek der Unterhaltung und des Wissens., ISSO, p. 237. (11430 



. Der Luftballon im Kriege. Ein Beitrag zur Geseh. d. Aeronautik. 



Bibliothek der Unterhaltung und des Wissens., 1880, 12°, pp. 14. (114:it 



Spiers. Kites for life-saving. 



Aer. Journ., Vol. 2, No. 5, 1898, London, pp. 4-5. S (11433 



[Spiers, P.] Capt. F. Spiers' life-saving kite. 



A6r. Journ., Vol. 1, No. 4, 1897, London, p. 19. S (11433 



[Spies, J.] Spies' practical flying machine. 



A6r. World, Vol. I, No. 4, 1902, Glenville, Ohio, pp. 74-78, ill. S (11434 



Spiess, Otto. Die Kraftfrage beim Vogelfluge. 



Gaea, Band XL, Leipzig, pp. 168-175. (114:i5 



. Ueber die Flugfrage. 



Gaea, Band XLI, 1905, Leipzig, pp. 161-168, pi. 1. (11436 



. Zur Flugfrage. 



Gaea, Band XL, 1904, Leipzig, pp. 101-108, ill. (11437 



Spiller, J. Particulars of experiments made January 1846, to ascertain the 

 law of resistance to the passage of the air through pipes of different 

 diameters and lengths at various velocities. 



Sixth Annual Report of the Aeronautical Society of Great Britain, 1871, Greenwich, 

 pp. 15-25. S (11438 



Spinelli. (See Croce-Spinelli. 

 Spitzberger. See 4018, 4271. 



CitHD;uHi>, B. JX. H-fecKOJiLKO CJiOB'B o B03,i;yxonjiaBaHiii npn 

 noMOin,!! annapaTOB'b, THiKeji'l.Hmiix'L BosAyxa. 



BosjiyxonjiaBaTeJib, JM 2, 21 aHBapa 1880 r., C.-'ileTepSyprt, 

 pp. 1.^-20; ."MS, 11 (|)eBpajia 1880 roaa, pp. 21-28; J^ 4, 1 Mapxa 

 1880 rojia, pp. 30-35: iNl 5, 21 napia 1880 roaa, pp. 37-40; Ki 6, 

 11 anp'fejia 1880 r., pp. 46-50. S (11439 



[Spitzin, V. D. Nieskolko slov o vozdukhoplavanii pri pomoshchi ap- 

 paratov tiazhelieishikh vozdukha. 



Vozdukhoplavatel, No. 2 (21-vo Yanvara 1880 goda), St. Petersburg, pp. 15-20; 

 No. 3 (2-vo Fevralia 1880 goda), pp. 21-28. S] 



