Animal locomotion : or, walking, swimming, and flying, with a dissertation on aëronautics (1873)
Pettigrew, James Bell, 1834-1908 · London : Henry S. King · leaf 113
While the anterior extremities of this Fig. 44. — The Turtle (■ Chelonia imbricata), adapted for swimming and diving, the extremities being relatively larger than in the seal, sea-bear, and wal- rus. The anterior extremities have a thick anterior margin and a thin posterior one, and in this respect… … Fro. 45. — The Crested Newt ( Triton cristatus, Laur.) In the newt a tail is superadded to the extremities, the tail and the extremities both acting in swimming. — Original. extremities likewise move by turns. As, moreover, the right anterior and left posterior extremities move together, and re- ^…
Aeronautics
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