Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York : D. Appleton & company · leaf 130
- 1 In some cases the posterior margin is slightly elevated above the horizon(fig. 53, <7). PROGRESSION IN OR THROUGH THE AIR. 107 markable property, that it creates the current on which it risesand progresses. It literally flies on a whirlwind of its ownforming. These remarks apply more… … Fio. 53. If, for example, I take a tapering elastic reed, as representedat a b, and supply it with a flexible elastic sail (c d), and aball-and-socket joint (x), I have only to seize the reed at aand cause it to oscillate upon x to elicit all the wing move-ments. By depressing the root of the reed…
Animal locomotion · Aeronautics
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