. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. 82 THE BONES. which are united by means of a continuous and very salient bony plate, that considerably augments the transversal diameter of each vertebra. In the atlas, the articular surface for the odontoid pivot is confounded in front with the cavities which correspond to the occipital condyles. The two facets wliicli are annexed posteriorly to this artipular surface, instead of being plane or gently undulated, as in tbe other domesticated animals, are transformed into real glenoid cavities. The transverse pro
. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. 82 THE BONES. which are united by means of a continuous and very salient bony plate, that considerably augments the transversal diameter of each vertebra. In the atlas, the articular surface for the odontoid pivot is confounded in front with the cavities which correspond to the occipital condyles. The two facets wliicli are annexed posteriorly to this artipular surface, instead of being plane or gently undulated, as in tbe other domesticated animals, are transformed into real glenoid cavities. The transverse pro- cesses are carried directly outwards and a little backwai<i; the lip which borders each is slightly raised; of the two foramina wiiich replace the anterior notch, one only exists, and this penetrates to the interior of the spinal canal; the other is merely a simple notch. In the axis, the odontoid process is <'ylinilrifai, narrow at its base, and bent a little upwards; the lateral facets of this eminenue represents true condyles. The spinous process is very thin and undivided, and is curved forward above the laminae ut' the atlas. The anterior notches are never converted into foramina. The third cervical vertebra is the largest: and the succeediiuj ones grailually diminish in thickness to the last, contrary to wliat occurs in the otlier sjiecies. The ftereuth does not show the spinous process so developed as in Runjinants and Paciiydt-rms (see Fi<rs. 3, 4, 7). E. Rabbit.—The cervical vertebrae in this animal somewhat resemble those in the Cat, though they differ in certain general and particular characters. Tlius, in the Rabbit they become larger as they proceed backward ; the atlas has its transverse pmcesses horizontal, and they are narrow at their origin ; the axis has a bifid tubercle at tlie posterior extremity of its spinous process, and a notch below it; the succeeding vertelirse are thin ; tlie fourth, fifth, and sixth are trifid in their transverse process
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