Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York, D. Appleton & company · leaf 98
and ventrals (the homologuesof the posterior extremities) can be divaricated and approximated, and theintervening webs spread out or folded up.—Ojp. cit. vol. i. p. 252. PROGRESSION ON AND IN THE WATER. 73 in the pipefish, whose motions are unwontedly shiggish.The twisting of the tail is… … Fig. 31,—The Manatee [Manatus Americamis). In fhis the anterior extremitiesare more developed than in the porpoise, but still the tail is the great organof natation. Compare with fig. 33, p. 73, and with fig. 30, p. 65. The shapeof the manatee and porpoise is essentially that of the fish. —…
Animal locomotion · Aeronautics
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