. The structure and life of birds . Fig. 14. —Part of wing of , carpal bone ; d, i, 2, 3, digits ; m, metacarpal; r, radius ; u, ulna. feathers. His breast-bone seems to have been wing was strong and well-developed, the humerusremarkably big at the near end, the bones of the fore- D 2 36 THE STRUCTURE AND LIFE OF BIRDS chap. Fig. 15.—Tail of Archaeopteryx.(All three figures after Dames.) in RELATIONSHIP TO REPTILES 37 arm were long and strong-, the hand had three fingers,each bearing a large claw, and it and the ulna sup-ported a number of large feathers, which seem w
. The structure and life of birds . Fig. 14. —Part of wing of , carpal bone ; d, i, 2, 3, digits ; m, metacarpal; r, radius ; u, ulna. feathers. His breast-bone seems to have been wing was strong and well-developed, the humerusremarkably big at the near end, the bones of the fore- D 2 36 THE STRUCTURE AND LIFE OF BIRDS chap. Fig. 15.—Tail of Archaeopteryx.(All three figures after Dames.) in RELATIONSHIP TO REPTILES 37 arm were long and strong-, the hand had three fingers,each bearing a large claw, and it and the ulna sup-ported a number of large feathers, which seem wellsuited for flight. The bill was short. The jaws werefurnished with teeth, the upper one with many, thelower one with three on each side. Our first thoughts on looking at this creature mightwell be, It must be a feathered lizard. The longtail and the teeth at once suggest this. But there aremany things which prove it to be a bird. (I) The three-fingered True, the three metacarpals havenot become fused, and the second and third digits areseparate. Besides this, each of the fingers bears abig claw. But in many existing birds a claw is foundon No. I, in a fair number on No. 2 as well, in theyoung Ostrich on all three. The third digit has notbeen reduced to a single phalanx. But this is no greatbarrier. In birds of our own day the fina
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Keywords: ., bookcentury1800, bookdecade1890, bookidstructurelif, bookyear1895
