DISEASES OF THE EYE. 91 



if two leaves were rubbed together — and her fright caused her 



several times to unhorse her rider. 



Another mare, quiet in other respects, would invariably rush 

 at another white or gray horse, and attempt to destroy it. 



These instances are selected from various others, because they 

 approach so nearly to what would be termed insanity in man. 

 It is a species of monomania, and as decided insanity as ever 

 the biped discovered. One of these horses, the second, was by 

 long and kind attention divested of this insane terror, and be- 

 came perfectly quiet and useful ; but the others bid defiance to 

 all means of cure, and to coercion among the rest. 



DISEASES OF -THE EYE. 



The diseases of the eye constitute a very important, but a 

 most unsatisfactory division of our work, for the maladies of this 

 organ, although few in number, are frequent in their appear- 

 ance. They are sadly obstinate, and often baffle all skill. 



We have spoken of fracture of the orbit, and its treatment 



Occasionally the substance round the eye is wounded by a 

 fork or other sharp instrument, and inflammation ensues. This 

 should be abated by poultices, and bleeding, and physic ; but 

 no probe should be used in such a place. 



The eyelids are subject to occasional inflammation from blows 

 or other injuries. Fomentation with warm water will be ser- 

 viceable here. 



The horse has occasionally a scaly eruption on the edges of the 

 eyelids, attended with great itching, in the effort to allay which, 

 by rubbing the part, the eye may be blemished. The nitrated 

 ointment of quicksilver, mixed with an equal quantity of lard, 

 may be slightly rubbed on the edges of the Uds with considerable 

 good efi^ect. 



The eyelids will sometimes become oedematous (puffed up with 

 a serous hmnor). Horses fed in low wet pastures, old carriage- 

 horses, &c., are subject to it. It is sometimes the result of badly 

 treated inflammation. The lids should be well bathed with 

 warm water mmgled with an aromatic tincture. 



Weakness and dropping of the upper lid is caused by diminu- 

 tion or loss of power in its muscles. Dry frictions and aromatic 

 lotions will frequently restore the tone of the parts. 



The eyelids are subject to occasional injury from their situation 

 and office. In small incised (cut) wounds of them great care 

 should be taken that the divided edges unite by the first intention. 

 This will hasten the cure, and prevent deformity. If any of the 

 muscles are divided, it is usually the ciliary or orbicularis palpe- 

 orarum. This lesion must be healed, if possible, by the first in- 



