Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York, D. Appleton & company · leaf 174
tion of its length.The long and short axes render the movements of the wingeccentric in character. In the wing of the bird the movementsof the primary or rowing feathers are also eccentric, the shaftof each feather being placed nearer the anterior than the pos-terior margin; an arrangement which… … Fig. 80. the short axis (root of wing) with a radius e f; c d represent-ing the long axis (anterior margin of wing) with a radius g 7;. Fig. 80 also shows that, in the wing of the bird, the indi-vidual, primary, secondary, and tertiary feathers have eachwhat is equivalent to a long and a short…
Animal locomotion · Aeronautics
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