438 Veterinary Medicine. 



casts with renal epithelium, imply nephritis and grave conditions. In 

 persistent paresis, muscles waste. Modes of death. Mortality 20 per cent. 

 Diagnosis, by history of onset, etc. Prevention : When highly fed and 

 hard-worked, give daily exercise, with comparative rest, reduce rationi and 

 give laxative or diuretic. Plenty of water. Treatment : Rest, sling, 

 diffusible stimulants, bleeding, bromides, water ad libitim, fomentations, 

 unload liver and portal vein, purgative, eserine, barium chloride, enematai 

 diuretics, for remaining paresis, derivatives, strychnia, diet, laxative, non- 

 stimulating, restore to work gradually. 



Definition. An acute auto-poisoning occurring in plethoric 

 horse on being subjected to active exertion after a period of idle- 

 ness, and manifested by great nervous excitement and prostra- 

 tion, paresis commencing with the hind limbs and the pa.ssage,of 

 haemoglobin in the urine. 



Nature and Causes. The mo.st varied conclusions as to th^^' 

 nature of this disease have been put forward by different authors. 

 In England, Haycock called it hysteria, mistakenly supppsing 

 that it was confined to mares, and Williams attributed it to, 

 urseaiic poisoning, conveniently ignoring the fact that the sudden 

 manifestation of the most extreme symptoms in an animal which 

 just before was in the highest apparent health and .spirits contra- 

 dicted the conclusion. In France (Trasbot) and Southern Europe 

 (Csokor) it has been looked on as a spinal myelitis, a conclusion 

 based on the disturbed innervation of the posterior extremities in 

 the great majority of cases, but which is not always sustained by 

 the pathological anatomy of the cord. In Germany veterinarians 

 have viewed the disease from widely different standpoints. 

 Haubner calls it myelo-renal-congestipn (Nieren-Riickenmarks) : 

 Weinmanu, a rheumatic lumbago; Dieckerhoff defines it as an 

 acute general di.sease of hoirses, manifested by a .severe parenchy- 

 matous inflammation of the .skeleton muscles, with a bloody in- 

 filtration of the bone marrow, especially of the femur, and with 

 acute nephritis and hsemoglobiuuria. He attributes the attack to 

 expo.sure to cold. If this were the real cause the attack would 

 be far more common in very cold weather when the horse is sud- 

 denly exposed to cold drafts between open doors and windows, 

 than when he is harnessed and driven so as to generate and 

 diffuse animal heat. Yet attacks in the stable are virtually un- 

 known, and in almost every instance the onset occurs during a 

 short drive. Friedberger and Frbhner say that the epithet rheu- 



