Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York, D. Appleton & company · leaf 151
rizon,and another from the tip of the tail («) to the root of the wing (d), the angleat which the wing strikes the air is given. The body and wings Avhen takentogether form a kite. The wings in the partridge are rounded and broad.Compare with heron, fig. 60.—Original. than the air. It must tread… … Fig. 60 —The Grey Heron (Ardea cinerea) in full flight. In the heron thewings are deeply concave, and unusually large as compared with the size ofthe bird. The result is that the wings are moved very leisurely, with a slow,heavy, and almost solemn beat. The heron figured weighed under 3 lbs. :and…
Animal locomotion · Aeronautics
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