Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York, D. Appleton & company · leaf 132
re- ^ In some cases the posterior margin is slightly elevated above the horizon(fig. 53, g). PROGRESSION IN OR THROUGH THE AIR. 107 niarkable property, that it creates the current on which it risesand progresses. It literally flies on a whirlwind of its ownforming. These remarks apply more… … Fig. 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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