Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York, D. Appleton & company · leaf 99
e tail and lower half of the trunk, the tail of the whaleexerting prodigious power. It is otherwise with the Rays, where the hands are princi- i Vide Remarks on the Swimming of the Cetaceans, by Dr. Murie,Proc. Zool. Soc, 1865, pp. 209, 210. 74 ANIMAL LOCOMOTION. pally concerned in progression,… … Fig. 35.—Skeleton of the Dugong. In this curious mammal the anteriorextremities are more developed than in the manatee and porpoise, andresemble those found in the seal, sea-bear, and walrus. They are usefulin balancing and turning, the tail being the effective instrument of propul-sion. The…
Animal locomotion · Aeronautics
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