. The comparative anatomy of the domesticated animals. Veterinary anatomy. 56 THE BONES. protuberance is obtuse, and gives rise on each side to the superior curved lines; in the Sheep, these curved lines are very salient and occupy the summit of the head. The styloid processes are sliort and much bent inwards. The basilar process, wide, short, and thick, has a groove in the middle of its external face; this groove is sometimea absent in the Sheep and Goat. The condyloid foramina are double, sometimes triple; the superior foramen does not pass directly into the cranium, but goes to a vast condu
. The comparative anatomy of the domesticated animals. Veterinary anatomy. 56 THE BONES. protuberance is obtuse, and gives rise on each side to the superior curved lines; in the Sheep, these curved lines are very salient and occupy the summit of the head. The styloid processes are sliort and much bent inwards. The basilar process, wide, short, and thick, has a groove in the middle of its external face; this groove is sometimea absent in the Sheep and Goat. The condyloid foramina are double, sometimes triple; the superior foramen does not pass directly into the cranium, but goes to a vast conduit that opens behind on the lateral maro-in of the occipital foramen, and which terminates in front by two orifices, one entering the parieto-temporal canal, the other opening on the external surface of the bone. The foramen lacerum is divided into an anterior and posterior foramen by the mastoid portion of the temporal bone. Parietal hone.—The parietal bone in the Ox does not occupy the anterior aspect Fis:. ox's head; anterior face. 1, Mastoid process; 2, Superciliary, or supra-orbital foramen; 3, Zygoma; 4, Lachrymal bone; 5, Maxillary spine; 6, Inferior orifice of the supermaxillo-dental canal. of the head, but concurs with the occipital to form the bnse of the neck. It represents a very narrow osseous plate, elongated transversely, and curved at its two extremities, which descends into the temporal fossa" to rest ujxju the sphenoid bone. There are no parietal ridges. The internal protuberance is only marked by a slight elevation of the internal plate ; for the most part it belongs to the occipital bone. The parietal bone of the Ox is developed from three cfntres of ossification, and the middle nucleus is even primarily divided into lateral halves ; but those centres are consolidated with each other at an early period, as well as with tlie anterior portion of the occipital. It does not aid in the formation of the pariefo-tenijoral canal, and is excavated interna
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