Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York, D. Appleton & company · leaf 197
ing together in flight.When so geared the upper and under wings are delicately curved andtwisted. They moreover taper from within outwards, and from before back-wards.— Original. 172 ANIMAL LOCOMOTION. The wings of insects present different degrees of opacity—•those of the moths and butterflies… … Fia. 91.—The Dragon-fly [Petalura gigantea). In this insect the wings arefinely curved and delicately transparent, the nervures being most stronglydeveloped at the roots of the wings and along the anterior margins (e e, ff),and least so at the tips (&&), and along the posterior margins {a…
Animal locomotion · 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)
