OF VETERINARY MEDICINE. Ill 



cretion of the hyrochloric acid, or a deficiency of the gastric juice, 

 in which case the quantity of pepsin wih be diminished also. 



The abnormahties are the chronic thickening of a portion or 

 portions of the stomach wall ; chronic thickening of the pylorus, or 

 chronic dilatation of the cardiac orifice of the oesophagus. 



Semeiology. — The symptoms consist of the following: 



1. Capricious appetite — animal sometimes 



very hungry and at other times will 

 not eat at all. 



2. Horse inclined to lick the wall for the 



lime and other alkalies ; will eat dirt, 

 especially clay, sometimes eats the 

 bedding that has been urinated upon 

 in preference to good hay. Young 

 stallions will sometimes defecate and 

 turn around and eat it. 



3. Occasional mild attacks of gastric flat- 



ulence, the only evidence of which 

 are sour eructations. 



4. Excessive thirst — quite common, ani- 



mal will drink a great deal of water 

 will try to empty the trough. 



5. Polyuria, a result of so much drinking. 



Often this is the symptom noticed by 

 the owner which induces him to call 

 the doctor. When he arrives, he is 

 told that the horse is flooding the 

 barn. The urine is clear, and there 

 is much of it. 



6. Unthriftiness, staring coat, thinness of 



flesh, pot belly, debility, etc. Animal 

 may become hide bound. 



7. Feces usually dry. 



8. Pulse, temperature and respirations 



unchanged. 

 Treatment. — Give the animal a complete change if food if 

 possible — grass in season, and change the hay from timothy to 

 prairie. If this is not possible, use any mixed hay containing 



