File:Man's place in nature, and other anthropological essays (1890) (14593884627).jpg

Identifier: mansplaceinnatur02huxl (find matches)
Title: Man's place in nature, and other anthropological essays
Year: 1890 (1890s)
Authors: Huxley, Thomas Henry, 1825-1895
Subjects: Human beings Apes Ethnology Indo-Aryans
Publisher: New York, Hurst and company
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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erebellum, in proportion, thanthey do in man (Fig. 17)—and it is quite certain that,in all, the cerebellum is completely covered behind, bywell developed posterior lobes. The fact can be verifiedby every one who possesses the skull of any old or newworld monkey. For, inasmuch as the brain in all mam-mals completely fills the cranial cavity, it is obvious thata cast of the interior of the skull will reproduce the gen-eral form of the brain, at any rate with such minuteand, for the present purpose, utterly unimportant differ-ences as may result from the absence of the envelopingmembranes of the brain in the dry skull. But if such acast be made in plaster, and compared with a similar castof the interior of a human skull, it will be obvious thatthe cast of the cerebral chamber, representing the cere-brum of the ape, as completely covers over and overlapsthe cast of the cerebellar chamber, representing the cere-bellum, as it does in the man (Fig. 21). A careless lis MANS PLACE IN NATURE.
Text Appearing After Image:
UTnmctTisee, Fig. 21.—Drawings of the internal casts of a Mans and of aChimpanzees skull, of the same absolute length, and placed incorresponding positions, A. Cerebrum; B. Cerebellum. The for-mer drawing is taken from a cast in the Museum of the RoyalCollege of Surgeons, the latter from the photograph of the castof a Chimpanzees skull, which illustrates the paper by Mr. Mar-shall On the Brain of the Chimpanzee in the Natural His-tory Review for July, 1861. The sharper definition of thelower edge of the cast of the cerebral chamber in the Chim-panzee arises from the circumstance that the tentorium re-mained in that skull and not in the Mans, The cast more MAN AND THE LOWER ANIMALS. 119 accurately represents the brain in the Chimpanzee than in theMan; and the great backward projection of the posterior lobesof the cerebrum of the former, beyond the cerebellum, is con-spicuous. observer, forgetting that a soft structure like the brainloses its proper shape the moment it is taken out of

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