Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York : D. Appleton & company · leaf 149
ibration of short-winged, heavy-bodied 124 ANIMAL LOCOMOTION. birds, all which goes to prove that sound is a concomitant ofrapidly vibrating wings. The Wing area Variable and in Excess.—The travelling-surfaces of insects, bats, and birds greatly exceed those offishes and swimming animals; the… … Pio. 57.—Shows a butterfly with comparatively very large wings. The nervuresare seen to great advantage in this specimen : and the enormous expanse ofthe pinions readily explains the irregular flight of the insect on the principleof recoil, a Anterior wing, b Posterior wing, e Anterior margin of…
Animal locomotion · Aeronautics
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