Urged on by hunger, the animal grasps food, which it chews and attempts to swallow, but immediately allows it to fall back into the manger, or ejects it by a painful coughing effort. In the case of liquids, even of lukewarm drinks, the same accident occurs, the food or liquid being returned by the nostrils. Slight salivation results from this difficulty in swallowing. The animal’s attitude is similar to that in parotiditis. The head is held stiffly, extended on the neck, in order to avoid compressing the region of the pharynx, and can only be moved slowly and with much pain. There is no apparent swelling of the parotid region, but on manipulating or pressing on the gullet the animal sometimes manifests the very acute tenderness of the parts by coughing and endeavouring to thrust away or to kick the examiner. Finally, examination of the mouth sometimes shows reddening and excessive sensibility of the soft palate and of the pillars of the fauces. These symptoms often assume a more alarming character, or are complicated by others; in fact, the condition very rarely stops at pharyngitis, but is usually accompanied by inflammation of the larynx, of the soft palate, and of the naso-pharynx. The whole throat is then inflamed; the nose and sometimes the eyes discharge, and there is difficulty in swallowing, interference with respiration or noisy respiration, and intense fever. =Diagnosis.= The diagnosis presents no difficulty, the symptoms mentioned being easy to identify, whether the condition be simply inflammation of the pharynx or be of a more extensive character. Nevertheless, cases occur where the symptoms are alarming, but in which one might hesitate between the diagnosis of ordinary acute sore throat and the sore throat which ushers in gangrenous coryza. A definite expression of opinion must then be deferred to a later date; for one cannot be absolutely certain whether or not the other signs of gangrenous coryza will appear. When there is only difficulty in swallowing one might _à priori_ suspect traumatic injury of the mucous membrane, with or without the presence of a foreign body. It is also necessary to bear in mind the possibility of difficulty in swallowing being occasioned by reflex irritation without local lesions, originating in enlargement of the retro-pharyngeal lymphatic glands as a consequence of tuberculosis or other disease.