Pharyngitis is an inflammation of the mucous membrane lining the pharynx. It is frequently associated with inflammatory diseases of the respiratory tract, such as laryngitis and bronchitis or pleurisy.

Symptoms.—The muzzle is dry and the saliva dribbles from the corners of the mouth; the animal swallows with difficulty or not at all, and holds its neck in a stiff, straight position, moving it as little as possible. The eyelids are half closed, the white of the eye is bloodshot, and the animal occasionally grinds its teeth. After masticating the feed the animal drops it out of its mouth as if to avoid the pain of swallowing, and also evinces pain when pressure is applied externally on the pharynx and tries to prevent the pressure from being applied.

Causes.—Pharyngitis may be produced by a sudden cooling of the surface of the body, as when cattle are exposed to a cold wind or a cold rain; or by swallowing irritant substances.

Treatment.—The throat should be syringed three times a day with an ounce of the following solution: Nitrate of silver, 1½ drams; distilled water, 1 pint. Bland and soothing drinks, such as linseed tea or oatmeal and water should occasionally be offered. Diet should consist of soft food, such as bran mashes with a little linseed meal mixed in them. Dry hay and fodder should not be given. Fresh, green grass or sound ensilage may be fed in small quantities. The upper part of the throat and the space between the jaws should be well rubbed once a day with the following liniment: Liquor ammonia fortior, 4 ounces; oil of turpentine, 4 ounces; olive oil, 4 ounces; mix. When evidence of blistering appears the application of the liniment should be stopped and the skin anointed with vaseline. Under the treatment described above the inflammation of the throat will gradually subside and the animal will be able to swallow as usual in five or six days. We need hardly say that during its treatment the sick animal should be kept in a comfortable stable.

PAROTITIS.

Inflammation of the parotid gland may arise from the inflammation extending to it when an ox is affected with pharyngitis or laryngitis, or the inflammation may commence in the salivary ducts and may depend on some influence the nature of which is unknown. Parotitis sometimes arises from a blow or contusion severe enough to set up inflammation in the structure of the gland. Tuberculosis and actinomycosis may infrequently be characterized by the lodgment of their parasitic causes in the parotid glands, in which case parotitis may be a symptom of either of these diseases.

Symptoms.—There is an elongated, painful swelling, beginning at the base of the ear and passing downward along the posterior margin of the lower jaw. The swelling is sometimes limited to one side, and when both are swollen it is generally larger on one side than on the other. The secretion of saliva is increased, the appetite is poor, the neck is stiff, so that it is painful to raise the head, and feed is swallowed with difficulty. In many cases the swelling of the glands, when submitted to proper treatment, disappears in a comparatively short time. In other cases, however, they remain enlarged, even after the animal recovers its appetite. In tuberculosis, lymphatic glands beneath the parotid glands are sometimes enlarged, thus causing the appearance of enlarged parotid glands.

Treatment.—A warm bran poltice, made by mixing bran with a hot 2 per cent compound cresol solution in water, should be applied on the swollen gland and kept in place by means of a bandage. Whenever the poultice has cooled it should be replaced by a new one. This treatment should be continued until the pain is less and the swelling is reduced or until there is evidence of pus formation, which may be ascertained by examining the surface of the gland with the fingers; and when, on pressing any part of the surface, it is found to fluctuate or "give," then we may conclude that there is a collection of pus at that place. It is well not to open the abscess until the fluctuation is well marked, as at this stage the pus or matter is near the surface and there is less trouble in healing the wound than if the pus is deep seated. The abscess should be opened with a clean, sharp knife. The poulticing should then be continued for two or three days, but the form of the poultice should be changed, by replacing the bran with absorbent cotton and pouring the compound cresol solution on the cotton. At all times the wound should be kept clean and the cavity injected once or twice daily with a solution of 1 dram of carbolic acid in 8 ounces of water. Under this treatment the pus may cease and the wound heal without complications. Saliva may issue from the orifice and result in the formation of a salivary fistula. This requires operative treatment by a qualified veterinarian. When poulticing fails to reduce the swelling or produce softening, the inflamed area may be rubbed once daily with camphorated oil, compound iodin ointment, or painted twice daily with Lugol's solution of iodin. The diet should be as recommended under Pharyngitis ([p. 17]).

PHARYNGEAL POLYPI.

Tumors form not infrequently in the pharynx, and may give rise to a train of symptoms varying according to their size and location. The tumor may be so situated that by shifting its position a little it may partially obstruct the posterior nares (nostrils), when, of course, it will render nasal breathing very noisy and labored. In another situation its partial displacement may impede the entrance of air into the larynx. In almost any part of the pharynx, but especially near the entrance of the gullet, tumors interfere with the act of swallowing. As they are frequently attached to the wall of the pharynx by a pedicel or stalk, it will be seen that they may readily be displaced in different directions so as to produce the symptoms before described. Enlarged postpharyngeal lymphatic glands are not rare in tuberculosis, and by pressing upon the wall of the pharynx and restricting the lumen of this organ they cause difficulty in both breathing and swallowing. Such enlarged glands may be differentiated from tumors by passing the hand into the cow's throat after the jaws are separated by a suitable speculum or gag.