794 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 55 



Spking (The) race at St. Cloud. 



American Aeronaut, Vol. 1, No. 6, 1908, St. Louis, pp. 212-214, ilL S (11444 



Springer, Rxjter W. Flying machines in warfare. 



Aeronautics, Vol. 3, No. 4 (Oct. 1908), New York, p. 5. S (11445 



Sprung. Die Photographie als Hiilfsmittel zum Studium der optischen Er- 

 scheinungen der Atmosphare. 



Zeitschr. Luftsch., XI Jahrg., 5 Heft, 1892, Berlin, pp. 142-143. S (11446 



. Erorterungen iiber Langley's " Tnnere Arbeit des Windes." 



Zeitschr. Luftsch., XIII Jahrgr., 5 Heft, 1894, Berlin, pp. 133-134. S (11447 



. Neuere Untersuchungen iiber den Luftwiderstand. 



Zeitschr. Luftsch., X Jahrg,, 1 Heft, 1891, Berlin, pp. 25-26. S (11448 



Sprung, A. See 1986. 



. Lehrbuch d. Meteorologie. Itn Auftrage d. Direktion d. deutschen See- 



warte bearb. 



1885, 8% pp. 407, pis. 17, figs. 88. (11449 



. S. P. Langley: The internal work of the wind. Smithsonian contribu- 

 tions to Knowledge, Washington, 1892. Abdruck in " Aeronautics " 1, 

 No. 4. 



Zeitschr. Luftsch., XIII Jahrg., 3-4 Heft, 1894, Berlin, pp. 106-107. S (11450 



Spuller. Discours prononce par M. le senatur Spnller, president de la Societe 

 Frangaise de Navigation Aerienne. 



L'Aeronaute, 26'' annge. No. 8 (aoflt 1893), Paris, pp. 171-194. S (11451 



Squiee, George 0. See 2977. 



. Advantages of aerial craft in military warfare. 



Aeronautics, Vol. 2, No. 1, 1908, New York, pp. 17-18. S (11453 



. Aerial locomotion in warfare. The military possibilities of the aero- 

 plane and airship. 



Sclent. Amer. Suppl., Vol. 67, No. 1722 (.Jan. 2, 1909), New York, p. 7. S (11453 



. Present status of military aeronautics. 



Fly, Vol. 1, No. 7 (May 1909), Philadelphia, p. 17. S (11454 



. Present status of military aeronautics. 



Fly, Vol. 1, No. 8 (June 1909), Philadelphia, pp. 21-22. S (11455 



. Present status of military aeronautics. 



Flight, Vol. 1, Nos. 9-13 (Feb., March 1909), London, pp. 121-123; 137-138; 

 149-150; 166-167, figs. 1-13. S (11456 



. Present status of military aeronautics. 



Flight, Vol. 1, Nos. 18-21 (May 1909), London, pp. 251-253; 269-270; 284-285; 

 303-305; figs. 14-25, diagrs. A-D. S (11457 



. Recent progress in aeronautics. 



Science, N. S., Vol. 29, No. 738 (Feb. 1909), New York, pp. 281-289. S (11458 



