Scientific American Supplement, No. 344, August 5, 1882 by Various
page 7 of 144 (04%)
page 7 of 144 (04%)
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Zeitung_.
[Illustration: METAMORPHOSIS OF DEER'S ANTLERS.--SECOND STAGE.] [Illustration] * * * * * MONKEYS. By ALFRED R. WALLACE. If the skeleton of an orang-outang and a chimpanzee be compared with that of a man, there will be found to be the most wonderful resemblance, together with a very marked diversity. Bone for bone, throughout the whole structure, will be found to agree in general form, position, and function, the only absolute differences being that the orang has nine wrist bones, whereas man and the chimpanzee have but eight; and the chimpanzee has thirteen pairs of ribs, whereas the orang, like man, has but twelve. 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 |
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