306 The Diseases of Animals 



ten days the wart comes off. If it has not been removed 

 by the "roots," another application should be made. If 

 warts are large, the best way is to cut them out with a 

 knife; should they bleed profusely, the severed blood- 

 vessels may be seared with a hot iron. Another good 

 method is to tie a stout string or strong rubber band 

 firmly around the base of the wart, which will then soon 

 slough off. Warts should be treated as soon as they 

 are noticed. 



MELANOTIC TUMORS 



These tumors occur in gray, roan, or white horses. 

 They contain much black pigment or coloring material. 

 They are usually found in the region of the anus, be- 

 tween the thighs or about the sheath. They occur as 

 single tumors or in numbers, and often attain a large 

 size. They should be cut out with a knife, care being 

 taken to use proper antiseptic methods. 



CANCERS 



Cancers are malignant tumors which become raw, 

 ulcerated and angry -looking. They may occur on any 

 part of the body, but are most frequent on the head 

 and lower part of the legs. The best treatment is re- 

 moval with the knife: in cases in which this cannot 

 be done, they can be sloughed out by applying one 

 dram of fluid extract of belladonna, mixed with suffi- 

 cient white arsenic to make a paste. After sloughing 

 has taken place, the sore should be treated as a sim- 

 ple wound. Cancers have already been discussed in 

 Chapter VIII. 



