Animal locomotion or walking, swimming, and flying : with a dissertation on aëronautics (1873)
Pettigrew, James Bell, 1834-1908 · London : Henry S. King & Co. · leaf 96
s and ventrals (the homologuesof the posterior extremities) can be divaricated and approximated, and theintervening webs spread out or folded up.—Op. cit. vol. i. p. 252. PROGRESSION ON AXD IX THE WATER. 73 in the pipefish, whose motions are nnwontedJy sluggish.The twisting of the tail is… … Ftg. 33.—The Porpoise {Phoccena communis). Here the tail is principally en-gaged in swimming, the anterior extremities being rudimentary, and resem-bling the pectoral fins of fishes. Compare with fig. 30, p. 65.—Original.
Animal locomotion · Physiology · Aeronautics
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