. Diseases of the dog and their treatment. RANULA (salivary cyst of the tongue.^ DISEASES OF THE TEETH 43 Inflammation of the Salivary Glands. {Parotitis; Mumps.) Inflammation of the glands of the ear (parotiditis) appears eitheras a consequence of some mechanical cause, or by infection from the cav-ity of the mouth, from some existing inflammation of that part, as adisease, due to the presence of a micrococcus which develops in the salivain the form of a diplostreptococcus or by direct infection from the blooditself in the form of a diplococcus or from metastasis (septicaemia, pyaemia,or^ in
. Diseases of the dog and their treatment. RANULA (salivary cyst of the tongue.^ DISEASES OF THE TEETH 43 Inflammation of the Salivary Glands. {Parotitis; Mumps.) Inflammation of the glands of the ear (parotiditis) appears eitheras a consequence of some mechanical cause, or by infection from the cav-ity of the mouth, from some existing inflammation of that part, as adisease, due to the presence of a micrococcus which develops in the salivain the form of a diplostreptococcus or by direct infection from the blooditself in the form of a diplococcus or from metastasis (septicaemia, pyaemia,or^ in rare instances, distemper). The latter requires special mention as. Fig. 23.—Glands of the head: 1, parotid gland; 2, submaxillary gland; 3, subzygomatic gland; 4,Whartons duct; 5, Bartholins duct; 6, palatine gland; 7, orbital gland; 8, Nuckian duct; 9, lachrymalgland. a primary idiopathic parotitis (mumps). The writer has frequentlyseen the gland in the region of the ear affected, more rarely the glandsof the lower jaw, and, least of all, the glands of the eye. Etiology.—This disease is rather rare in the dog, but sometimes itmay take the form of an epizootic (Hertwig, Schussele). In these cases itis probably due to some infecting virus that gets into the gland throughStenos duct. The exact nature and time of incubation of this diseaseare not known. 44 DISEASES OF THE DIGESTIVE APPARATUS Symptoms.—The disease begins with a swelling of the gland andthe adjacent structures on one side or both sides of the ear. The loca-tion of these glands is seen in Fig. 23. They swell rapidly and are verytender to the touch, changing the whole appearance of th
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