Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York, D. Appleton & company · leaf 61
slight increase of surface.The surface exposed by the bat exceeds that displayed by many insects 36 ANIMAL LOCOMOTION. and birds. The wings of the bat are deeply concave, and so resemble thewings of beetles and heavy-bodied short-winged birds. The bones of thearm (r), forearm (d), and Jiand {n, n,… … Fig. 17.—The Bat (Pliyllorhina gracilis, Peters). Here the travelling-surfaces(r d e f, a n n n) are enormously increased as compared with that of theland and water animals generally. Compare with figures from 10 to 14,p. 34. r Arm of bat; d forearm of bat; ef,nnn hand of ha.t.—Original. Although…
Animal locomotion · Aeronautics
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