Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York : D. Appleton & company · leaf 84
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 (^1), 4 to 7, gives the different positionswhich the legs simultaneously assume while both are on the ground; thesecond group (fi), 8 to 11, shows the various positions of both legs at…
Animal locomotion · Aeronautics
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