OF VETERINARY MEDICINE. 263 



temperature is 109° to 112° F., the mucous membranes get livid, 

 the pulse rapid and weak, the respirations at first are rapid, and 

 as coma develops they get slower and finally stertorous. Death 

 in bad cases follows in half an hour to four or five hours. 



Prognosis. — With a temperature of 109° a horse will usually 

 recover if he receives prompt and proper treatment. 110° or 

 higher will usually prove fatal, unless the treatment is very 

 prompt and the horse is strong. 



Special Pathology. — There is a condition of anhydrsemia. 

 The blood is thick, slightly if any coagulated, nearly black, with 

 extensive destruction of red corpuscles. The lungs are con- 

 gested, the rjght side of the heart is nearly empty, the left side 

 is full of black nearly fluid blood, the brain is congested and the 

 chromophylic plagues or Nissl's bodies are broken up, the liver 

 and kidneys are congested, and the spleen is somewhat enlarged. 



Sequelae. — Supersensitiveness to heat that lasts the balance 

 of the season, and sometimes for ever after. This is manifested 

 by panting on slight exertion in hot weather, and staggering from 

 slight cerebral congestion. Some cases become dummies. 



Treatment. — Get the patient into the shade as soon as pos- 

 sible, if he is not comatose. Give him a half pint of whisky 

 in as much water or an ounce of aromatic spirits of ammonia in 

 half a pint of cold water. Give a grain of strychnia hypodermat- 

 ically, and a dose of nitroglycerine if necessary ; dram doses of 

 acetanilid will assist in reducing the temperature which must be 

 brought about promptly. To aid in doing this put sacks of ice 

 on the head and neck, and spray the body with cold water by 

 pinching the end of a hose pointed upwards so as to let the water 

 come down on to him like rain. Take his temperature every 

 fifteen minutes and stop the spraying when it is reduced to 103°. 

 If kept up longer it is apt to fall below the normal. In addition 

 to the above, if the initial temperature is 110° or higher, give 

 rectal injections of cold water with a fountain syringe. During 

 convalescence give nux, aromatic spirits of ammonia, gentian, 

 light diet and long rest. 



Prevention. — When horses come in from work hot, sponge 

 them over with cold water and let them dry. Give internally 



