. The structure and life of birds . Fig. 4.—Hand of (a) Haiteria Lizard; {b) Chick,ci, near row of carpals; C2. farther row of carpals ; ce, central bones—thereare often two ; d i, 2, 3, 4, 5, digits ; mc, metacarpals ; p, pisiform bone, originally atendon ; r, radius ; u, ulna. beyond it. Of the more distant row there is not asign in the mature bird, but, if we examine the skeletonof an embryo, it may be made out. In a young chick-there are still two free bones to represent it (C 2, fig. 4).In the adult these have been fused with the Meta-carpals beyond. The tendency to fusion, or, as it iste
. The structure and life of birds . Fig. 4.—Hand of (a) Haiteria Lizard; {b) Chick,ci, near row of carpals; C2. farther row of carpals ; ce, central bones—thereare often two ; d i, 2, 3, 4, 5, digits ; mc, metacarpals ; p, pisiform bone, originally atendon ; r, radius ; u, ulna. beyond it. Of the more distant row there is not asign in the mature bird, but, if we examine the skeletonof an embryo, it may be made out. In a young chick-there are still two free bones to represent it (C 2, fig. 4).In the adult these have been fused with the Meta-carpals beyond. The tendency to fusion, or, as it istechnically called, ankylosis, is found in many parts of ii SKELETONS OF BIRD AND REPTILE u the birds skeleton, and may be regarded as a mostmarked characteristic. The bone formed by the fusionof the farther row of carpals with the metacarpalsforms a broad slab on which rest many of the mostpowerful feathers of the wing. Its compound natureis described by its name of Carpo-metacarpus, orwrist-hand bone (CM fig. 2). Of the five me
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Keywords: ., bookcentury1800, bookdecade1890, bookidstructurelif, bookyear1895
