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 eut 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 eut out with a knife, care being 
taken to use proper antiseptic methods. 
CANCERS 
Caneers 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. 
