ILLUSTRATED GUIDE. 233 



mination in blindness. The eyes may be cleared np a few 

 times, but eventually the animal goes blind. 



Treatment — 0[)cn the bowels freely with the aloes 

 ball, and give internally one of the following powders in 

 the feed, night and morning : colchicum root, pulverized, 

 one ounce ; linseed meal, two ounces ; mix and divide into 

 twenty powders. Bathe the eye with the following : bella- 

 donna, one ounce ; rain-water, one pint ; or, nitrate of sil- 

 ver, eight grains; distilled water, four ounces, mix; or, 

 sulphate of zinc, one-half drachm ; diacetate of lead, one 

 drachm ; water, one and a half pints ; or, take a piece of 

 sulphate of coppier (blue stone), shave it thin and smooth, 

 and pass it carefully between the eyelid and the eyeball 

 twice a day until the eye is cleared up. 



CATARACT. 



This disease is usually the] result of termination of spe- 

 cific ophthalmia, causing an opacity or breaking up of the 

 crystalline lens, situated directly behind the pupil, pre- 

 senting a white and cloudy appearance in the centre of the 

 eye, and causing^partial or total blindness. Little can be 

 done by way of treatment in this disease as it occurs in 

 the horse. 



