80 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL, 55 



Bach, C. Die Stellunguahme deutscher Ingenieure zu dem Projekt des Graf en 

 von Zeppelin, betreffend den Bau lenkbarer Luftschiffe, im letzten Jahr- 

 zehnt des vorigen Jahrhunderts. 



111. Aer. Mitt., XII Jahrg., 26 Heft (30 Dez. 1908), Berlin, pp. 805-813. WB (1113 



Bachelard, Edouabd. See 8153. 

 Bacon. Air-weighing machine. 



Mech. Mag. Mus. Reg. Joiirn. Gaz., Vol. 2, Nos. 39, ii (May, June 1824), London, 

 pp. 169, 256. (1113 



Bacon, Geetrude. Balloons, airships and flying machines; by Gertrude Bacon. 



New York, Dodd, Mead & Company; London, T. C. & E. C. Jack, 1905, pp. 124, 

 front., ills. LC (1114 



. Photography from a balloon. 



Aer. Joum., Vol. 6, No. 22, 1902, London, pp. 28-30. S (1115 



. The acoustical experiments carried out in balloons by the late Rev. 



J. M. Bacon. 



Aer. Joum., Vol. 10, No. 37, 1906, London, pp. 5-8. S (1116 



Bacon, J. M. See 965, 1116, 1335, 9151, 10848, 11019, 11282. 

 Bacon, John M. Bacon's balloon voyages. 



Aer. World, Vol. 1, No. 7, 1903, Glenville, Ohio, p. 152. S (1117 



. Balloon ascents in a thunderstorm. 



Aer. Journ., Vol. 6, No. 24, 1902, London, pp. 62-65. S (1118 



. Balloon ascents in thunderstorms. 



Aer. World, Vol. 1, No. 5, 1902, Glenville, Ohio, pp. 112-113. S (llli> 



. By Land and Sky. 



London, 1900, 8°, pp. 275, pi. 4. (1120 



. Cloud photography from balloons. 



Aer. Journ., Vol. 4, No. 16, 1900, London, pp. 146-148. S (1121 



. Scientific ballooning. 



Report of the Board of Regents of the Smithsonian Institution for 1898, Washington, 

 D. C, pp. 307-319. S (1122 



. Scientific observations at high altitudes. 



Aer. Journ., Vol. 6, No. 23, 1902, London, pp. 40-43. S _ (1123 



. Steering balloons by upper air currents. 



Everybody's Magazine, Vol. 5, No. 24 (Aug. 1901), New York, pp. 171-176, map 1, 

 ill. S (1124 



. The audibility of sound in air. 



Nature, Vol. 60, 1899, London, p. 484. (1125 



. The balloon as an instrument of scientific research. 



Aer. Journ., Vol. 3, No. 10, 1899, London, pp. 29-35, figs. 1-4. S (113e 

 . The balloon in modern warfare. 



Flying, No. 6 (April 1903), Lon<lon, pp. 24r.-251, ill. S (1127 



