EYES, 



57 



Symptoms.^A hard, tense and painful swelling of the 

 parts, accompanied with irritation and excitement through 

 the entire system. 



Treatment— Give twenty to twenty-five drops of the 

 tincture of aconite root four times in the day, to calm 

 the system. Apply cold iced water, with woollen cloths, . 

 to the part. If, from hroken bones, try and remove, or 

 adjust them in position to one another, and secure them 

 so with splint and bandage. In severe cases of broken 

 bones, the animal had better be killed. (See Fractures.) 



Exostosis.— (See Splint and Bony Tumors.) 



Eyes, Diseases of the. 



Before referring to the diseases of this organ, it may be 

 necessary to say a few words as to the structure of the eye. 



(1.) The eyelids are composed of skin, and under it 

 the fibres of a circular muscle which close the eyelids. 

 The eyelids are lined internally with a mucous mem- 

 brane called the conjunctiva, which is reflected from 

 them over the anterior surface of the eyeball. 



(2.) The globe of the eye is not exactly round, for it 

 is more like a segment of a smaller circle put into a 

 greater one. 



(3.) The clear portion of the eye is called the cornea, 

 and forms a portion of the globe. 



(4.) The sclerotic coat is what is called the white of 

 the eye; and just back of it is what is called the choride 

 coat of the eye. And immediately within this choride 

 coat is placed the retina, or the expansion of the optic 

 nerve, or the nerve of sight. 



(5.) The humors of the eye occupy the anterior cham- 

 ber, as well as pass into the posterior. The iris floats in 

 this humor, and behind it will be found the magnifying 



