. The physiology of the domestic animals; a text-book for veterinary and medical students and practitioners. Physiology, Comparative; Domestic animals. 280 PHYSIOLOGY OF THE DOMESTIC ANIMALS. side by side, near to the ramus of the jaw, to enter the mouth, the submaxillary duct being somewhat the larger and lying nearer the jaw ; the ducts are crossed by the lingual nerve. Either duct may then be isolated or divided and treated as in making a permanent parotid fistula (Pigs. 115 and 116). In the horse, rumi- nants, and rabbits the operative procedure is about the same as in the dog (Fig. 117).
. The physiology of the domestic animals; a text-book for veterinary and medical students and practitioners. Physiology, Comparative; Domestic animals. 280 PHYSIOLOGY OF THE DOMESTIC ANIMALS. side by side, near to the ramus of the jaw, to enter the mouth, the submaxillary duct being somewhat the larger and lying nearer the jaw ; the ducts are crossed by the lingual nerve. Either duct may then be isolated or divided and treated as in making a permanent parotid fistula (Pigs. 115 and 116). In the horse, rumi- nants, and rabbits the operative procedure is about the same as in the dog (Fig. 117). The submaxillary saliva obtained by catheterization or from fistulse is a limpid, viscid fluid of alkaline reaction. Its densitjr is said to be greater than that of the parotid or mixed saliva, and may rise to 1025 after feeding. According to Eck- liard, the submaxillary saliva be- comes more consistent when exposed to the air, and will precipitate a flocculent deposit. Corrosive sub- limate causes it to become almost gelatinous without becoming turbid. It contains a considerable quantity of mucin, to which this viscidity is due. Albumen seems to be almost absent from the submaxillary saliva, or to be present only in traces, although the xanthoproteic reac- tion will demonstrate the presence of proteicls. The cliastatic power of the submaxillary saliva of the dog appears to be but slightly de- veloped in the fresh saliva, although it acquires this property by stand- ing one or two days in the atmos- phere. The following tables, after Lassaigne and Herter, represent the analysis of this secretion. Kig. 116.—Anatomy of the Submaxil- lary a.\'d Sublingual Glaxduxak Region in the Dog. (Bernard.) a a, digastric muscle; b b, mylo-hyoid muscle; e r, sublingual gland: d. sublingual duet; e, submax- illary duct; ft/, submaxillary gland; 1, lingual nerve; 2, chorda tympani. In the Horse. Water, Solids, Salts, Organic matter, 2 575 92,5 In the Cow. Water Mucin and albuminous m
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