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The palate bones are behind those of the upper jaw and with them form the bony part of the roof of the mouth. The inferior turbinated are spongy, scroll-like bones, which curve about within the nasal cavities so as to increase the surface of the air passages of the nose. The vomer serves as a thin and delicate partition between the two cavities of the nose.
The shortening and spinulation of the scales are greatest in punctatus, least in norvegicus. In punctatus there are teeth on the vomer, in unimaculatus none, in norvegicus they are very small. If we consider fishes in general, we see that there is no evidence of any relation between many of the most important taxonomic characters and function or external conditions.
The region chiefly affected in this poisoning is the jaw-bone, but the inflammation may spread to the adjoining bones and involve the vomer, the zygoma, the body of the spheroid bone, and the basilar process of the occipital bone.
In the nose, especially when the ulcerative process is associated with a putrid discharge ozæna the destruction of tissue may be considerable and result in unsightly deformity. The entire palatal portions of the upper jaws, the vomer, turbinate, and other bones bounding the nasal and oral cavities, may disappear, so that on looking into the mouth the base of the skull is readily seen.
The nasal passage, divided into two ducts by a vertical partition, the vomer septum, was referred to in the chapter on inspiration. The so-called sinuses are hollow spaces in small bones on either side and above the nasal passage and communicating directly or indirectly with it. A question regarding the nasal cavity, including the sinuses, suggests itself.
The reindeer-caribou type, of the genus Rangifer, agrees with American deer in having the vertical plate of the vomer complete, and in having the lower ends of the lateral metacarpals remaining, but, like Cervus, it has a brow-tine to the antlers.
The former, represented by the genus Cervus, has a brow-tine to the antlers; has the posterior portion of the nasal chamber undivided by the vertical plate of the vomer; and the upper ends only of the lateral metacarpals remain, whereas in all these particulars the typical American deer are exactly opposite.
All the Mazama type are without a true brow-tine to the antlers; the lower ends of the lateral metacarpals only remain; the vertical plate of the vomer extends downward and completely separates the hind part of the nasal chamber into two compartments; and with hardly an exception they have a large gland on the inside of the tarsus, or heel.
Like American deer it has the lower ends of the lateral metacarpals remaining, and the antlers are without a brow-tine, but like Cervus it has an incomplete vomer, and unlike deer in general, the antlers are set laterally on the frontal bone, instead of more or less vertically, and the nasal bones are excessively short.
A part of the right malar bone, the two superior maxillary bones, the nasal bones, the cartilage, the vomer, the middle lamina of the ethmoid, the left maxillary bone, a portion of the left zygomatic arch, and a great portion of the inferior maxilla were carried away, or comminuted, and all the soft parts correspondingly lacerated.
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