INFLAMMATION OF THE EYE. 383 



CHAPTER XXIV. 

 DISEASES AND INJURIES OF CERTAIN SPECIAL ORGANS. 



Diseases of the Ear — Inflammation of the Eye — Cataract — Amau- 

 rosis — Buck-eye — Surfeit — Hidebound — Mange — Lice — Mal- 

 lenders and Sallenders — Warbles, Sitfasts.and Harness-Galls — 

 Grubs — Bites and Stings of Insects — Swelled Legs — Chapped 

 Heels — Grease and Scratches — Warts — Corns — Sander ack — 

 False Quarter — Oiiittor — Thrush — Canker — Laminitis — Seedy 

 Toe — Contraction of the Foot — Navicular Disease — Accidents 

 to the Legs and Feet. 



DISEASES OF THE EAR. 



Deafness is sometimes met with in the horse, but I know of no 

 symptoms by which its precise nature can be made out; and with- 

 out ascertaining the seat of the disease, it is useless to attempt to 

 treat it. 



Sometimes from a blow on the external ear inflammation is 

 set up, and an abscess forms ; but all that is necessary is to open it, 

 so that the matter can readily flow out as fast as it forms, without 

 which precaution it will not readily heal. 



INFLAMMATION OF THE EYE. 



This important organ is subject to three forms of inflamma- 

 tion, to opacity of the lens, and to paralysis of the nerve, called 

 amaurosis. 



Simple inflammation is the most common of all the diseases 

 to which the horse's eye is subject, and it precedes most of the 

 others. It is always the result of any injury of this part, or of 

 cold ; and it shows itself if there is a tendency to inflammation 

 of this organ, whenever the horse is in a state of plethora. The 

 si/mptoms are an intolerance of light, so that the eye is kept half 

 closed, by which it looks smaller than the other; a gummy secre- 

 tion glues the lids together at the angles; the eyelids are slightly 

 swollen, showing a distended state of their veins; and there is 

 more or less watering or overflowing of tears. When the lids are 

 separated, their internal -surface looks more red than natural, and 

 the white of the eye is covered with a net-work of nne red ves- 

 sels. After the second day the transparent cornea loses its clear- 

 ness, and becomes muddy, sometimes over the whole surface, and 

 at others in specks. If the disease is allowed to go on unchecked, 

 the cornea is involved, and the lining membrane of the aqueous 

 humor follows ; a secretion of pus takes place into the chamber, 

 or the cornea ulcerates, and the contents of the eye escape. The 



