514 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 55 



Lesh, L. J. Conditions of success with aeroplanes. 



Scient. Amer. Suppl., VoL 66, No. 1701 (Aug. 8, 1908), New York, pp. 86-87, 

 figs. 2. S (7461 



. Equilibrium and control of aeroplanes. 



Aeronautics Vol. 2, No. 4, 1908, New York, pp. 22-25, ill. S (7462 



. Some preliminary experiments in flying. 



Scient. Amer., Vol. 97, No. 16, 1907, New York, pp. 272, 274, ill. 8 (7463 



. Steering and equilibrium-preserving devices for aeroplanes. 



Scient. Amer., Vol. 97, No. 6 (Aug. 10, 1907), New York, p. 99. S (7464 



. The development of an aeroplane. 



Amer. Mag. Aeronautics, Vol. 1, No. 5 (Nov. 1907), New York, pp. 31-32. S (7465 



" Les Inventions Nouvelles." See 4865, 7931. 



Leslie, John. Treatises on various subjects of natural and chemical philoso- 

 phy. By Sir John Leslie .... With a biographical memoir. Republished 

 from the Enclycop^dia Britannica. 



Edinburgh, A. and C. Black, 1838, vi p., 1 1., p. 537, ills., pi. 7, diagrs., 20 cm. 

 " Memoirs of Sir John Leslie by Macvey Napier ": p. [l]-46. LC (7466 



Less. Ueber die Beziehung zwischen der Geschwindigkeit und dem Drucke 

 des Windes. 



Zeitschr. Luftsch., X Jahrg., 7-8 Heft, 1891, Berlin, pp. 184-186. S (7467 



. Ueber die verticalen Luftbewegimgen. 



Zeitschr. Luftsch., X Jahrg., 3-4 Heft, 1891, Berlin, pp. 95-96. S (7468 



Less, E. Ueber die Beziehungen des Potentialgefalles der Luftelektricitat zur 

 Hohe. 



Zeitschr. Luftsch., XIII Jahrg., 7 Heft, 1894, Berlin, pp. 190-193. S (7469 



Lesson (A) to airship builders. 



Aer. World, Vol. 1, No. 6, 1903, Glenville, Ohio, p. 134. S (7470 



Lestani, LuDOvico. I primordi dell' aeronautica ossia invenzione della dire- 

 zione verticale ed orizzontale degli aerostat!, patenta ta per la privativa 

 nel settembre dell' anno 1869. 



Milano, 1871, 8% pp. 88, pis. 6. (7471 



Lestonnat, Raymond. Les marins aerostiers. 



La Conq. I'Air, 5» annee, No. 2 (Jan. 1908), Bruxelles, p. 4. S (7472 



Lestonnat, SlsBASTiEN-CHfiRY. Essai de locomotion aerienne. Machine aeri- 

 enne " Le Papillon." 



Paris, 1874, 8', pp. 8. (7473 



LfiTONNfi. Sur un projet de machine aerostatique redige par le general 

 Meusnier, membi'e de I'Academie des Sciences. 



C. R. Acad. Sci., T. 103 (juil.-d6c. 1886), Paris, pp. 237-240. S (7474 



