. L'anatomie comparée des animaux domestiques. Anatomie vétérinaire. 62 LES OS. origine de la supérieure des lignes courbes est très élevé et forte. La tubérosité du col de la protubérance occipitale externe est absente ou peu marquée ; le processus styloïde sont courtes, et méritent bien tl,e nom du foramen lacerum jugulaire les cardinaux le ^ divisés en deux parties par la protubérance de la mastoïde et le processus basilaire est large, long et épais, et creusé sur le côté par un canal qui ,,oins un sini lar l'un dans l'os temporal pour former un grand canal veineux cette dernière commnn.cates, derrière, wi

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. The comparative anatomy of the domesticated animals. Veterinary anatomy. 62 THE BONES. origin of the superior curved lines is very elevated and strong. The cervical tuberosity of the external occipital protuberance is absent or little marked; the styloid Processes are short, and well deserve tl, e name of jugular eminences The foramen lacerum ^ divided into two portions by the mastoid protuberance and the basilar process is wide long, and thick, and hollowed on the side by a channel that , , oins a sini lar one in the temporal bone to form a large venous canal This last commnn.cates, behind, with the posterior foramen lacermn, and opens, in front, m the cramum where it is continuous with the cavernous groove of the sphenoid. The anter.or angle forms a very marked prominence, which is deeply fixed into the parietal bone, and partly constitutes the internal protuberance of that bone. , , ^ -a j. , 2 Parietal bone âIn the Dog the parietal bone, formed by two ossific centres only, is distinguished by the great development of the ridges and the parietal protuberance. This last constituted in part by the occipital bone, does not show any lateral excavations at its base- tliey are carried lower, near the summit of the petrous process, on the sides of the' occipital bone. The parieto-temporal canals are continued, notwithstanding, to the base of the protuberance, which they traverse, to open into each otiier in its interior. In the Cat there are scarcely any parietal crests, and the internal protuberance is replaced by two great trans- verse bony plates which separate the cavity of the cerebrum from that of the cerebellum. 3. Frontal bone.âIn carnivora, the external face of this bone presents in its middle a more or less marked de- pression. The orbital arch is incomplete, and there is no superciliary foramen, or mortice on the inner face. The bone is united with the supermaxillaries. 4. Ethmoid hone.âThe ethmoidal fossa is very deep, and the cells very developed and dive

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