In cases of a diseased molar tooth in the upper jaw, food getting firmly impacted in the hollow space, irritates the pulp in the fang and the adjacent bone until the progress in ulceration reaches the nasal chamber or sinuse and a nasal discharge is established. If an upper molar tooth is lost the molar formerly opposed to it in the lower jaw grows out and sets up the same train of symptoms. In all cases then in which nasal gleet is associated with much fœtor and with difficulty in eating, a careful examination of the teeth should be made. (See Diseases of the Teeth). FOREIGN BODY IN THE NOSE. Professor Gamgee records the destruction of an animal for glanders in which the cause of the discharge was afterwards found to be a physic ball coughed up into the posterior part of the nose and firmly impacted there. COLLECTIONS OF PUS IN THE GUTTURAL POUCHES. Structure, position and opening of pouches, inflamed by extension. Symptoms, discharge intermittent with pendent head, swallowing, pasturing, cough, roaring, dyspnœa, inhalation of food, parotid swelling, glandular enlargement. Nature of contents. Treatment, pasturage, blister, tonics, irrigation, puncture, injection. Though this is commonly a result of severe sore throat or strangles, yet as it causes a chronic discharge from the nose liable to be confounded with those properly due to diseases of the nasal chamber, it is noticed in this place. The guttural pouches are two mucous sacs peculiar to solid footed animals. They lie side by side above the throat, and in direct contact with the lower surface of the superior bones of the head and the first bone of the neck. They are properly speaking dilatations of the Eustachian tubes which in all animals establish a communication between the pharynx and the middle ear. The opening into the pharynx is at the anterior extremity of the pouch and close to the posterior opening of the nostril, hence the discharge takes place chiefly or exclusively when the head is lowered, since gravitation then favors the escape of the fluid.