Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York, D. Appleton & company · leaf 186
figure the wing isrepresented as travelling more decidedly forwards during itsdescent, and this is characteristic of the down stroke of theinsects wing—the stroke in the insect being delivered in avery oblique and more or less horizontal direction (figs. 64,65, and 66, p. 139 ; fig. 71, p. 144).… … Pig, 86. At fig. 88 (p. 166) the angles for a similar reason are stillfurther diminished. This figure (88) gives a very accurateidea of the kite-like action of the wing both during itsdescent and ascent. The downward screwing of the posterior margin of the and forward direction at the beginning of…
Animal locomotion · Aeronautics
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![An illustration from Episodes of insect life / by Acheta Domestica, [pseud.] ;edited and revised by J.G. Wood. (1879)](https://img.insideoutlibrary.com/img/200/wellcome-wellcome_b28066340-358-1.webp)
