ILLUSTRATED GUIDE. 231 



i n tlie same manner ; either of these remedies usually an- 

 swers the purpose. 



SADDLE-GALLS. 



These are too well known to horsemen to require any 

 gpecial 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 OP THE EYE.— AMAUROSIS, OR GUT- 

 TA SERENA, 



Commonly called glass eye. In this disease the eyes have 

 a peculiar glassy appearance, with an enlarged or expand- 

 ed pnpil. The eyes are clear and show no indications of 

 disease to the ordinary observer, yet the animal is par- 

 tially or wholly blind. The cause is paralysis of the op- 

 tic 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 whatever ; while 

 in a sound eye the pupil contracts when exposed to a 

 strong light, and expands when removed to a weaker 

 light, or when removed to a dark place. An animal af- 

 fected with amaurosis will run against any object 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. 



