Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York, D. Appleton & company · leaf 73
ge on a flat surface. The awkward w^addle of the swan,parrot, and eagle when on the ground affords illnstratioias. 48 ANIMAL LOCOMOTION. extremities of the toes superiorly are armed with powerfulshort nails, the tips of which project inferiorly to protect thetoes and confer elasticity when the foot… … Fig. 25.—Ostnehes pursued by a Hunter. condition as compared, with the legs.^ All the bones are pre-sent, but they are so dwarfed that they are useless as organsof flight. The angles which the bones of the wing make witheach other, are still less than the angles made by the bones ot*the leg. This…
Animal locomotion · Aeronautics
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