182 DISEASES OF THE HORSE. 
SADDLE-GALLS. 
These are too well known to horsemen to require any 
special remarks regarding their cause, etc. 
Treatment.—Bathe the parts two or three times a day 
with equal parts of tincture of myrrh and tincture of 
aloes. Or, collodion, one ounce ; castor oil, two ounces ; 
mixed together: or, glycerine is a very good remedy. 
DISEASES OF THE EYE.—AMAUROSIS, OR GUTTA 
SERENA,’ 
Commonly called glass eye. In this disease the eyes 
have a peculiar glassy appearance, with an enlarged or 
expanded pupil. The eyes are clear and show no indica- 
tions of disease to the ordinary observer, yet the animal 
is partially or wholly blind. The cause is paralysis of . 
the optic nerve, the best means of detecting which is to 
expose the eye to different degrees of light, which, when 
disease exists, makes no impression on the pupil what- 
ever; while in a sound eye the pupil contracts when ex- 
nied to a strong light, and expands when removed toa 
weaker light, or when removed to a dark place. An- 
animal affected with amaurosis will run against any ob- 
ject in his way, and present all other symptoms of a 
horse blind from any other cause. 
Treatment.—Give a strong purge; follow this twice 
a day with half-drachm doses of nux vomica, mixed in 
the feed; apply a fly-blister back of the eye, and give 
bran mashes for a few days. No corn should be used 
until the sight is restored. 
INFLAMMATION OF THE HAW, 
As it is commonly called, also known as the Hooks. 
This a-swelling from inflammation of the membrane in 
the inner corner of the eye, called the membrana nicti- 
