164 DISEASES OF THE HOESE. 



existence. He was stone-blind from that moment, and 

 never appeared to regain the power of sight afterwards. 

 This horse had been subject to severe attacks of speci- 

 fic ophthalmia for two years previously, for which he 

 had never been subjected to bleeding or large doses of 

 physic. His age was six years, and he was subject to 

 frequent attacks of plethora. In this case no treatment 

 is of any avail; but its existence may be partially 

 guarded against by strict attention to the digestive 

 organs, atmosphere of the stable, regular food, and 

 exercise. Violent exertion should be avoided where 

 this disease is feared, but moderate riding and driving 

 will materially aid in warding it off. 



