TUMOES. 267 



ish nodulated masses to a soft colloid character. It will be a 

 ■hard matter for the stock owner to distinguish the different 

 tumors. The different varieties will be given here, and as the 

 treatment for all is practically the same, there can be no mis- 

 take made in the method of getting rid of them. 



The tumor that will interest the stock raiser perhaps most is 

 the melanotic tumor, or melanotic sarcoma. It is seen almost 

 exclusively in gray or white horses. Its favorite seat is on the 

 under surface of the tail, around the anus or vagina, or the 

 perinseum. All parts of the body, internal and external, may be 

 affected by these tumors. In some cases there are no external 

 tumors. They grow to an enormous size in some cases, and are 

 of a malignant nature. It appears first as a small round tumor, 

 which gradually enlarges in every direction within and upon 

 those portions of the body which do not lose their black color by 

 age. Other tumors form in the neighborhood forming a collec- 

 tion similar to a bunch of grapes, but larger in size. The animal 

 does not suffer much inconvenience unless there is friction pro- 

 duced upon the surface of the tumor. A black tumor in any 

 part of the liody may be called melanosis. It is generally con- 

 fined to aged animals. 



The treatment of melanosis is early removal, which may check 

 its growth for some time, but it cannot be permanently removed, 

 I have removed but one melanotic tumor tliat did not reappear 

 some time in the animal's life. 



ACTING MYCOSIS. 



This is a malignant [)arasitic tumor caused by the parasite 

 actinomyces. This has been referred to in a previous chapter of 

 this work. 



HARD CANCER. 



A hard cancer is white in its structure, arranged in masses 

 with projections passing from its center to various parts of the 

 organ which it attacks. It cuts up almost like cartilage. It dif- 

 fers from a simple tumor by being more rapid in its growth, by 



