320 



that has been destroyed by the arsenic, may be pulled or 

 torn away by the fingers. In case the tumor is not all de- 

 stroyed by the first application, apply it again, being very 

 careful to cover the skin around the tumor with lard or 

 vaseline previous to the application in all instances. Never 

 apply this very strong caustic a second time sooner than 

 twelve to twenty days after the first application. Usually, 

 one application is sufficient. On the abdomen, the lips, the 

 cheeks and the eye-lids, this remedy should be used with 

 great caution, because it is liable to make a hole entirely 

 through the walls of these parts. 



Fig. 1.— Section of tumor from side of mule. Tumor, 3 inches in 

 diameter, a, a, blood vessels situated between the fibrous bundles ; 

 walls of vessels not well developed ; b, fibrous tissue ; the fibres run- 

 ning in various directions. Magnified 74 diameters and nuclei 

 brought out with borax carmine. 



