Travels in space; a history of aerial navigation (1902)
Valentine, E. Seton, Tomlinson, F. L. · London Hurst and Blackett · leaf 184
he balloonpassed over a hawthorn hedge. Upon this hedge thetraveller contrived to fall, and thus save his life at the A HISTORY OF AERIAL NAVIGATION. 165 cost of further painful bruises. The Research meanwhile, whirled away seaward and was lost. In 1S63, a French engineer and mathematician,M. de… … DAVIDS SAILING AEROSTAT (HORIZONTAL SECTION). of being folded like the wings of a bird. His proposalwas the result of a mathematical investiofation of theaction of air upon aeroplanes and under the wings 01birds. M. de Louvrie asserted that Navier and othermathematicians had grossly over-estimated…
Aeronautics
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