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
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. … Fig. 34.—The Manatee Ma tiatus A i In this the anterior extremities are more developed than in the porpoise, hut 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.—Original. the…
Animal locomotion · Physiology · Aeronautics
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