Attention must of course be given to any curable concurrent or inter-dependent disease. DYSENTERY OF CATTLE. Definition. Attacks ox mainly. Causes: accessory causes, chills, rain storms, night dews, hoar frost, foul or iced water, alimentary irritants, spoiled fodder, over exertion, hot damp weather, odors of carrion, crowding, swamps, foul stables, germs or pathogenic ferment, in man catarrhal, diphtheritic and amœbic, amœba dysenterica, other microbes, effect of better hygiene. Symptoms: attack sudden, languor, trembling, weakness, weeping eyes, fever, buccal epithelial softening, erosions, tenesmus, fœtid, liquid stools, involuntary defecation, hemorrhoidal congestion, open anus, colics, tender right flank, splashing on handling, anorexia, salivation, unthrifty skin, hide-bound, cracked muzzle, later prostration, low temperature, sunken glazed eyes, drooping head, ears, eyelids, weakness, emaciation, alkaline, fœtid, frothy, bloody, mucous stools, with sloughs, saliva acid, gastric liquids alkaline, bile suppressed. Duration: three days to three weeks or chronic. Mortality 50 to 80 per cent. Complications: mostly septic, abscess, gangrene of other organs, lungs, joints, glands, etc. Lesions: rapid sepsis, blood deep red, coagulum loose, venous congestion, large intestines congested, tumefied, softened, desquamated, eroded, sloughing, necrotic, folds perforated, cicatrizing, contents mucopurulent, bloody, putrid, microbes, glandular lesions, implication of small intestines, stomach mouth, liver, spleen, hepatic abscess. Diagnosis: from rinderpest by tardiness and comparative weakness of contagion, absence of general mucous congestion and epithelial concretions, from toxic enteritis by same. Prevention: avoidance of causes, separation of sick, disinfection, careful feeding. Treatment: Demulcents, antiseptics, astringent tonics, opiates, ipecacuan, calomel, sodium sulphate with antiseptics, antiseptic enemata of glycerine, phenol, creolin, iron sulphate, silver nitrate, salicylic and boric acids, rest, gravitation, careful dieting. _Definition._ An infective, ulcerative inflammation of the large intestine but especially of the colic and rectal mucosæ. It is well recognized as a disease of the ox, and the older writers allege its existence also in horses, swine and dogs, though this is not admitted in all modern veterinary works.