Animal locomotion or walking, swimming, and flying : with a dissertation on aëronautics (1873)
Pettigrew, James Bell, 1834-1908 · London : Henry S. King & Co. · leaf 168
g and non-reciprocating action of the wing in such cases is purely amatter of speed. If the travel of the wing is greater than thehorizontal travel of the body, then the figure-of-8 and thereciprocating power of the wing will be more or less perfectlydeveloped, according to circumstances. If,…
Animal locomotion · Physiology · Aeronautics
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