Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York : D. Appleton & company · leaf 110
roke, both of the arms and legs,this being equal to nearly half an ellipse. Thus when theleft arm and leg are thrust forward, the arm describes thecurve a b (fig. 42), the leg e describing a similar curve. Asthe right side of the body virtually recedes when the leftside advances, the right arm… … FIG. 42.—Overhand Swimming.—Original. the body alternately, in a nearly straight line, greatly con-tributes to continuity of motion, the impulse being appliednow to the right side and now to the left, and the limbsbeing disposed and Avorked in such a manner as in a greatmeasure to reduce friction…
Animal locomotion · Aeronautics
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