Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York : D. Appleton & company · leaf 161
eed, can consequently only determine the minimum ofwing for elevating the maximum of weight—flight beingattainable within a comparatively wide range. Wings, tJieir Form, etc.; all Wings Screics, structurally andfunctionally.—Wings vary considerably as to their generalcontour; some being falcated or… … FIG. 61.—Right wing of the Kestrel, drawn from the specimen, while beingheld against the light Shows how the primary (b), secondary (a), and ter-tiary (c) feathers overlap and buttress or support each other in every direc-tion. Each set of feathers has its coverts and subcoverts, the wing…
Animal locomotion · Aeronautics
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