ACUTE MYELITIS IN THE DOG. MENINGO-MYELITIS. Causes: distemper, in long-haired pets, pyæmia, exposure to cold, violent overexertion, traumas, vertebral caries or abscess. Lesions: in lumbar enlargement, horns yellowish, red, friable, pultaceous, leucocytes in excess, punctiform extravasations, neurons opaque; granular, filaments diffluent, varicose, sclerosis. Meninges congested, thickened. Symptoms: as in horse, extreme hyperæsthesia, later anæsthesia, tremors or twitching, later paraplegia. Treatment: Laxatives, ice bags, sedatives, later derivatives, cauterization. During convalescence, phosphates, iron, zinc, strychnia. Attend to bladder and rectum, light, laxative diet, pure air and water. _Causes._ This disease is a common result of distemper and according to Trasbot, is much more frequent in long-haired and pet dogs than in the short-haired and mongrels. The shelter of the hair, like the warm indoor atmosphere, seems to contribute to a special sensitiveness of the cutaneous and nervous tissues. The infective inflammation of the myel is also seen in pyæmia, rabies and milk sickness. It appears to be further induced by exposure to cold draughts when heated, or excited, by plunging into ice cold water, by lying on cold, damp, stone pavement or metallic plates. Violent overexertion, excessive fatigue, and a variety of traumatisms are further factors. Kicks, blows on the back, concussion from falling from a window or other height, and sprains received in fighting or otherwise, are common causes. Disease of the vertebræ or abscesses in their vicinity will sometimes extend to the meninges and cord.