Animal locomotion or walking, swimming, and flying : with a dissertation on aëronautics (1873)
Pettigrew, James Bell, 1834-1908 · London : Henry S. King & Co. · leaf 209
joints and in the 186 ANIMAL LOCOMOTION. rotation of the bones of the wing on their axes. The spiralconformation of the pinions, to which allusion has been sofrequently made, is best seen in the heavy-bodied birds, as theturkey, capercailzie, pheasant, and partridge; and here alsothe concavo-convex… … Fio. 103.—Shows the twisted levers or screws formed by the wings of the gull.Compare with rig. 53, p. 107 ; with figs. 7(5, 77, and 78, p. 147, and with tigs.82 and 83, p. 158.—Original. Consideration of the Forces which propel the Wings of Insects.—In the thorax of insects the muscles are arranged…
Animal locomotion · Physiology · Aeronautics
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