Animal locomotion or walking, swimming, and flying : with a dissertation on aëronautics (1873)
Pettigrew, James Bell, 1834-1908 · London : Henry S. King & Co. · leaf 183
X … Pig. 85. In flexion, as a rule, the under surface of the wing (fig. 84a) is arranged in the same plane with the body, both being ina line with or making a slight angle with the horizon (x x).1 1 It happens occasionally in insects that the posterior margin of the wingis on a higher level than the…
Animal locomotion · Physiology · Aeronautics
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