100 VETEEINAEY OPHTHALMOLOGY. 



transferred to high, dry ground they will nearly all 

 escape. In France, the government rejects all unsound 

 stallions and refuses service to any mare that has 

 suffered. Unwholesome food and errors in feed are 

 undoubtedly predisposing causes, for in a given 

 district those fed with judgment will be granted 

 immunity in a large proportion over those badly fed. 

 Intestinal parasites, over-work, debilitating diseases 

 and causes of every kind that weaken the vitality. 



The symptoms vary according to the severity of the 

 attack. Some present marked exacerbation of temper- 

 ature, and again it may be entirely absent. But there 

 uhmys is evidence of general disorder, lack of vitality. 

 Locally, symptoms are those of internal ophthalmia 

 with the addition of increased tension or hardness of 

 the bulbus. This may be due to effusion into its 

 cavity. The contracted pupil does not expand much 

 in darkness nor even under the action of a mydriatic. 

 Opacity advances over the cornea commencing at the 

 limbus, and may be partial or complete. And so long 

 as it is transparent the aqueous will be seen turbid, 

 with sometimes floculi. The iris will appear rusty 

 and dullish. The lens will be clouded and will observe 

 a greenish-yellow reflection from the eye. From the 

 fifth to the seventh day the floculi precipitates, the lens 

 and iris are more plainly seen, and the commencing ab- 

 sorption may be complete in twelve to fifteen days. The 

 recurrence is the characteristic of the affection. And 



