With these two exceptions, the differences are those of
shape, proportion, and direction only, though the resulting differences
in the external form and motions are very considerable. The greatest of
these are, that the feet of the anthropoid or man-like apes, as well as
those of all monkeys, are formed like hands, with large opposable thumbs
fitted to grasp the branches of trees, but unsuitable for erect walking,
while the hands have weak, small thumbs, but very long and powerful
fingers, forming a hook, rather than a hand, adapted for climbing up
trees and suspending the whole weight from horizontal branches. The
almost complete identity of the skeleton, however, and the close
similarity of the muscles and of all the internal organs, have produced
that striking and ludicrous resemblance to man, which every one
recognizes in these higher apes, and, in a less degree, in the whole
monkey tribe; the face and features, the motions, attitudes, and
gestures being often a strange caricature of humanity. Let us, then,
examine a little more closely in what the resemblance consists, and how
far, and to what extent, these animals really differ from us.
Besides the face, which is often wonderfully human--although the absence
of any protuberant nose gives it often a curiously infantile aspect,
monkeys, and especially apes, resemble us most closely in the hand and
arm. The hand has well-formed fingers, with nails, and the skin of the
palm is lined and furrowed like our own.
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