Archive image from page 253 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana03todd Year: 1847 Hind extremity, Ape. Fig. 64. Hind extremity, Lion. Fig. 65. Skull of a Rodent, Hind ley, Antelope. fluences their dexterity, and gives variety to their modes of action : it is the faculty of opposing a thumb to the other ringers, so as to seize the smallest objects, which constitutes a hand, properly so called. This faculty is carried to its highest degree of perfection in man, in whom the whole anterior extremity is free, and can be exclusively employed in
Archive image from page 253 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana03todd Year: 1847 Hind extremity, Ape. Fig. 64. Hind extremity, Lion. Fig. 65. Skull of a Rodent, Hind ley, Antelope. fluences their dexterity, and gives variety to their modes of action : it is the faculty of opposing a thumb to the other ringers, so as to seize the smallest objects, which constitutes a hand, properly so called. This faculty is carried to its highest degree of perfection in man, in whom the whole anterior extremity is free, and can be exclusively employed in pre- hension. These different combinations, which strictly determine the nature of the several mam- miferous animals, have formed the grounds for their distribution into the following Orders. ' Amongst the Unguiculate animals, the first is MAN, who, in addition to his peculiar privileges in every other respect, is distinguished zoologically by possessing hands on the ante- rior extremities alone ; the posterior extremities being destined to sustain him in the erect position. (Fig. 60.) ' The Order which comes nearest to Man, —that termed Quadrumana,—has hands on the four extremities. (Fig. 61.) ' Another Order, termed Carnivora, has not the thumb free and opposable on either the anterior or posterior extremities. (Fig. 62.) ' These three Orders possess likewise seve- rally the three kinds of teeth, viz. molars, lani- aries, and incisors. ' The quadrupeds of the fourth Order, viz. the Rodentia, have the digits differing little from those of the Carnivora ; but they want the laniary teeth, and have the incisors of a form and disposition altogether peculiar to them- selves. (Fig. 63.) ' To these succeed the animals whose digits now become much cramped, being sunk deep in large and, most commonly, crooked claws. They are further defective in the absence of Skull of the Giraffe. incisor teeth; some of them even want the laniaries, and others are altogether destitute of dent
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