Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York, D. Appleton & company · leaf 264
sverse {fgh) waves are at once produced; the one seriesrunning in the direction of the length of the wing, the other inthe direction of its breadth (vide p. 148). This wing furthertivists and untwists, figure-of-8 fashion, during the up and downstrokes, as shown at fig. 122, p. 239 (compare with… … Fig. 117.—Eepresents a longitudinal section of bamboo cane ten feet long, andone inch wide.— Original. Fig. 118 —The appearance presented by the same cane when made to vibrateby the hand. The cane vibrates on either side of a given line {x x), and ap-pears as if it were in two places at the same…
Animal locomotion · Aeronautics
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