Animal locomotion or walking, swimming, and flying : with a dissertation on aëronautics (1873)
Pettigrew, James Bell, 1834-1908 · London : Henry S. King & Co. · leaf 195
wo acting together in flight,w hen so geared the upper and under wings are delicately curved andtwisted. They moreover taper from within outwards, and from before back-wards.—Original ANIMAL LOCOMOTION. The wings of insects present different degrees of opacity—those of the moths and butterflies… … Fig. 91.—The Dragon-fly (Petalura gigantca). In this insect the wings arefinely curved and delicately transparent, the nervnres being most stronglydeveloped at tbA roots of the wings and along the anterior margins (e e, //),and least so at the tips (6 b), and along the posterior margins (a a).…
Animal locomotion · Physiology · Aeronautics
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![An illustration from Dr. Sulzers Abgekürtze Geschichte der Insecten. Nach dem Linaeischen System / [Johann Heinrich Sulzer]. (1776)](https://img.insideoutlibrary.com/img/200/wellcome-wellcome_b30415275-405-1.webp)
