OF VETERINARY MEDICINE. 237 



associated with torpidity of the liver and indigestion, which re- 

 sults in paralysis of the pneumogastric nerve. 



The horse will often stop, shake his head and let his ears 

 droop; the muscles of the head and neck twitch, the eyes pro- 

 trude, and he may become blind ; his nostrils will be dilated and 

 his breathing stertorous. He rears and plunges, loses co-ordina- 

 tion and goes down in a heap. The shock to the nervous sys- 

 tem causes him to sweat, and while down he will often froth at 

 the mouth. 



While the animal is down dash cold water on his head and 

 face. Take off his harness and give him plenty of air. As soon 

 as the fit is over learn the causes of it and remove them if pos- 

 sible. If plethora is at the bottom of it, lessen his feed and give 

 purgatives. These attacks often come from stomach and liver 

 troubles. Bleeding is useless. 



Cerebral Anaemia. — This is a bloodless condition of the 

 brain. There results a loss of motor and sensory power and 

 the mucous membranes are pale. It may be due to rapid 

 haemorrhage. There will be great nervous prostration from 

 weakness and debility. The treatment should be rational ; treat 

 the general symptoms to supply the body with nutrition. 



Cerebral Embolus. — In this condition some of the blood 

 vessels of the brain become plugged by a clot and embolism 

 results. Paralysis of all parts of the brain supplied by these 

 occurs. The clot is usually formed by reason of weak cardiac 

 power or valvular insufficiency. The embolism causes soften- 

 ing of the brain. The symptoms are stupor, weak mindedness 

 and pale mucous membranes. 



Apoplexy. — As applied to the brain this disease means cere- 

 bral hemorrhage. It is characterized by a sudden loss of both 

 motor and sensory power. The hemorrhage may occur in one 

 of three ways : first, in rupture of the blood vessels of the brain ; 

 second, from the filling of the ventricles with blood; and third, 

 from a hemorrhage into the arachnoid space. The first and 

 third ways usually prevail in the horse. 



The disease comes on suddenly always : the horse falls to the 

 ground, froths at the mouth and the special senses are sus- 

 pended, — he cannot hear, taste, smell or see. The mucous mem- 



