428 ILLUSTRATED STOCK DOCTOR. 



teething, and, in fact, where predisposition occurs, from any cause tend- 

 ing to lower the general state of the health. 



How to know it. — There will be a sunken look to the eye ; the haw of 

 the eye will protrude ; the white of the eye may be of a pinkish cast ; 

 the eye will be watery ; the pupil of the eye will be cloudy, at the edges, 

 and dull and discolored at the center ; there will be haziness, milkiness, 

 or a whitish spot may appear, which will continue to overcast the eye. 

 In the intervals between the attacks the transparent coat of the eye will 

 have a hazy, bluish cast about its border, and the iris will lack its natural 

 brightness ; the upper lid or eyebrow will be wrinkled or furrowed. 



What to do. — Look first of all for carious or defective teeth, and if 

 found extract them. There is a strong sympathy between any difficulty 

 with the teeth and the eyes, though unsound or <* wolf teeth" do not, as 

 was once supposed, cause blindness. 



Place the animal in a darkened stable ; give four drachms aloes, and 

 apply the following lotion twice a day : 



No. 161. 20 Grains acetate of lead, 



20 Drops belladonna, 

 1 Quart filtered rain water. 



Alternate this twice a day with the following : 



No. 165. 20 Grains sulphate of zinc, 



20 Drops tincture of Calabar bean, 

 1 Quart filtered rain water. 



The physic having acted, give two or three times a day the following. 



No. 166. 1 Drachm sulphate of iron, 



a Ounce powdered Peruvian bark. 



Mix in one quart of warm water, or give in the feed if the horse will 

 eat it. When another attack is expected double this dose. 



Sometimes an ounce daily, for several weeks, of Fowler's solution of 

 arsenic will be serviceable, intermitting a few days occasionally. If, how- 

 ever, the attacks recur, and at lessened periods, the trouble may be 

 expected to end in cataract and blindness. 



rv. Cataract. 



As a rule, cataract is the result of inflammation of the deep structures 

 of the eyeball (internal ophthalmy or the periodic form). It also occurs 

 occasionally from diabetes and other constitutional disabilities. 



How to know it. — Put the horse in a dark place. Take a lighted can- 

 dle. Three images will be reflected, one from the surface of the eye. 



