HEAT STROKE — OVER-EXERTION. 443 



Then all of a sudden they come to a stop beside a wall, or, if at liberty, 

 in a ditch, and refuse to move. They may die rapidly with symptoms 

 of asphyxia if they are forced to move until completely exhausted. 

 In others, after a rest of several hours, the breathing becomes slower, 

 the anxiety less and normal conditions return. 



In sheep the same general signs may be seen : panting respiration, 

 cyanosed mucous membranes and extreme anxiety, while death follows 

 rapidly in the same way, with symptoms of asphyxia. 



The diagnosis is extremely easy. The prognosis is grave. 



Treatment consists in prompt and free bleeding to prevent pulmonary 

 congestion. The animals should be rested in a shady, sheltered spot. 

 They should have cool drinks and be sprinkled over the head, neck, or 

 entire surface of the body with cold water. 



To prevent such attacks, fat animals should not be moved for long 

 distances, or during the hottest hours of the day, while difficult and 

 prolonged exertion should be avoided. 



