73 



CATARACT. 



Cataract is opacity of the crystalline lens. No treatment will 

 restore it to its normal condition. 



CHAPTER IX. 



DISEASES OF THE EEET. 



CORNS. 



A corn is the result of a bruise, involving the structures of the 

 sensitive sole, appearing as a reddish spot due to congestion of 

 blood in small ruptured vessels in the triangular space included 

 between the bars and the wall at the heel; occuring in the fore 

 feet. 



Treatment. — Remove the shoe, give exit to pus if the corn has 

 festered, then poultice. The radical cure, however, is to be 

 eflEected by proper shoeing. Do not allow the shoe to bear on 

 the corn. 



THRUSH. 



Thrush is a disease of the frog, characterized by an offensive 

 discharge. 



Symptoms. — At first there is simply an increased moisture in 

 the cleft of the frog, accompanied by an offensive smell. After 

 a time a considerable discharge takes place — thin, watery, and 

 highly offensive — changing gradually to a thicker, putrid matter, 

 which rapidly destroys the horn of the frog. 



Treatment. — As a rule the diseased and ragged portions of the 

 horn are to be pared aw^ay, the foot poulticed for a day or two, 

 the cleft of the frog and the grooves on their edges to be cleaned 

 and well filled with dry calomel, blue vitriol, or alum; if the dis- 

 charge is profuse the dressing should be changed daily, other- 

 wise it may be left on for two or three days at a time. As the 

 disease is due to filth the horn must be kept clean and dry, and 

 if necessary a leather boot can be put on. 



The symptoms of this disease are strongly marked, and consist 

 of an abundant, fetid, colorless discharge from the frog or sole, 



