=Symptoms.= “Anorexia or fastidious appetite, prostration, debility and sluggish, indifferent movements, are followed by the local lesions on the skin and gums. On the skin appear petechiæ and extravasations, which often implicate the bristles, so that they may be shed or pulled out with ease, the bulbs appearing dark and blood-stained (bristle rot). These may be followed by necrotic sloughs, and deep ulcers that are slow to heal. The gums are red and swollen, with hæmorrhagic spots, and bleed on the slightest touch. Erosions, sores, and ulcers are not uncommon; the tongue is dry and furred, and the mouth exhales a fœtid odour. The teeth may become loose in their sockets. Swelling of the joints ... may be noticed, and lameness or stiffness from muscular or intermuscular extravasation. Blood effusions into ... the eye have been noticed, and paralytic or comatose symptoms from similar effusions on the brain. In the absence of improvement the patient becomes more and more debilitated and exhausted, and death may be preceded by profuse exhausting diarrhœa.” “=Prognosis= is unfavourable in advanced cases, and when the faulty regimen cannot be corrected.” =Treatment.= “The first consideration is to correct the unwholesome conditions of life, purify the building and its surroundings, and allow a free range on pasture. Subject each patient to a thorough soapy wash, and if possible allow clean running water in which a bath may be taken at will. Access to green food and invertebrates (slugs, larvæ, etc.) is important, or a varied diet of grain, middlings, bran, roots, fruits, tubers, cabbage, silage, etc., must be furnished. Iron and bitters (gentian, nux vomica) are useful, and sometimes small doses of arsenite of soda solution or cream of tartar are useful. Acorns or horse-chestnuts are recommended. For the mouth a wash of potassium chlorate, soda biborate, or potassium permanganate may be resorted to.... In the case of fat pigs it is more profitable to butcher at once, as soon as early symptoms appear.” From Law’s “Veterinary Medicine,” p. 558, Vol. III. SECTION II. DISEASES OF THE DIGESTIVE APPARATUS. SEMIOLOGY OF THE DIGESTIVE APPARATUS. The group of diseases which affect the digestive apparatus is one of the most important in bovine pathology, because almost all animals of the bovine species are bred with the object of utilising to the full their powers of digestion and assimilation. Whether we consider adult fat animals, calves intended for slaughter or milch cows, the object sought is always the same—_i.e._, to secure the greatest possible economic return through the medium of the digestive functions.