Animal locomotion or walking, swimming, and flying : with a dissertation on aëronautics (1873)
Pettigrew, James Bell, 1834-1908 · London : Henry S. King & Co. · leaf 82
nied by a certain degree of lateralcurvature; the right leg and left arm, when they advance tomake a step, each describing a curve, the convexity of whichis directed to the right and left respectively. Similar curvesare described by the left leg and right arm in making thesecond or complementary… … Fig. 27 shows the simultaneous positions of both legs during a step, dividedinto four groups. The first group (^i), 4 to 7, gives the different positionswhich the legs simultaneously assume while both are on the ground ; thesecond group (B), 8 to 11, shows the various positions of both legs at…
Animal locomotion · Physiology · Aeronautics
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