DISEASES OF HORSES AND CATTLE. 147 



oozes out. There is only one remedy which I have 

 found to be of any use. Take biniodide of mer- 

 cury two drams, vaseline three ounces. Mix and 

 rub on a little of this. Let it remain on for twenty- 

 four hours, then wash off, and rub on a little lard. 

 In a week, or when it is well from the effects of the 

 first, rub on a little more, and so on for two months. 

 By this time the ointment will have absorbed the 

 thickened skin, leaving a thin, soft, pliable, 

 healthy skin, which will not crack. It usually 

 takes from two to three months to accomplish 

 this. 



Ringworm (Tinea Tonsurous). — This is common 

 in the domestic animals, especially in calves and 

 young cattle, and is contagious. It depends upon 

 the presence of a vegetable parasite, which devel- 

 ops and grows rapidly when it finds a suitable 

 place for development. It may affect any part of 

 the body, but its favorable seat is the face, ears 

 and neck of cattle, and sometimes the back and 

 hind quarters. 



Symptoms: There appears a gray crust on the 

 skin, and the hair drops out. This keeps spreading 

 in the form of a ring until the side of the face, ears 

 or neck may be covered with it. It appears in the 

 same way on the back, hips, and inside of the hind 

 legs. It does not seem to affect the health of the 

 animal, as it is found in the well-kept as well as 

 the unkept. 



Treatment : First remove the crusts by washing 

 the parts with warm water in which one ounce of 

 the carbonate of potassium has been put to every 



