_Symptoms._ Acute pharyngitis is manifested by impaired or lost appetite, dullness, weakness, by difficulty in deglutition, by the rejection through the nose of water or other liquids swallowed, by swelling over the parotid and above the larynx, and by a disposition to keep the head extended on the neck and the nose raised and protruded. Fever is more or less marked according to the severity of the attack the temperature being raised in mild cases to 100°, and, in the more violent, to 104° or 106°. The pulse and breathing may be excited, amounting sometimes to dyspnœa, the throat is tender to the touch and its manipulation rouses a cough, the nasal mucosa is congested and the buccal membrane, and especially along the margin of the tongue may be red and angry. Salivation is shown more or less, in _solipeds_ the saliva accumulating especially during mastication in froth and bubbles at the commissures of the mouth, while in _ruminants_ the grinding of the teeth or frequent movement of the jaws in the absence of food or actual mastication leads to a free escape of the filmy liquid at the same points. _Dogs_ will rub the jaws with the foot as if to remove some irritating object from the mouth. In the last named animals the swelling of the tonsils, fauces and pharyngeal mucous membrane, may be seen marked by patches and spots of varying redness and swelling, covered with glairy or opaque mucopurulent secretions, or particles of food, or even showing erosions. The cough of pharyngitis is painful, paroxysmal, and softer and more gurgling (even in the early stages) than that of laryngitis or bronchitis. It is roused by handling the throat, by swallowing, by a draught of cold air or by passing out of doors, in _dogs_ by opening the mouth, and in _cattle_ by pulling on the tongue which causes pain and resistance. The cough is followed by the rejection, mainly through the nose in _solipeds_, but also through the mouth in other animals, of a glairy mucus or an opaque mucopurulent discharge often mixed with and discolored by the elements of food or in bad cases by blood. The _course_ of the disease is comparatively rapid, and it usually ends in recovery in seven to fifteen days, in cases that are not complicated by dangerous local infections.