Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York : D. Appleton & company · leaf 145
above, beneath, or on 120 ANIMAL LOCOMOTION. a level with the body, or on either side of it, the body almostinstantly attained a position of rest. The body was, in fact,equally suspended and balanced from all points. Rapidity of Wing Movements partly accounted for.—Muchsurprise has been expressed… … Fig. 56.1 confers great range and immense speed at the tip; the speedof each portion of the wing increasing as the root of the wingis receded from. This is explained on a principle well under-stood in mechanics, viz. that when a rod hinged at one endis made to move in a circle, the tip or free end…
Animal locomotion · Aeronautics
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