EPIDERMIC AND EPITHELIAL TUMOURS. 



431 



Warts sometimes grow to an immense size, and hang like 

 bunches of onions below the animal's belly ; when cut into, they 

 are found not only to be warts, but also steatoma, or the subcuta- 

 neous fibrous tumours already described. Indeed, when this 

 kind of tumour breaks through the skin, it very closely resembles 

 a common wart. They are found in horses and cattle, and most 

 commonly in young animals. 



When in the mouth of the dog, they may be snipped off with a 

 pair of scissors ; their removal in this way is not succeeded by 

 much haemorrhage, or the mouth may be washed twice or thrice 

 a day with vinegar, which seems to have a wonderful effect in 

 destroying them. When on the eyelid, their removal must be 

 performed with great caution, or the animal may be damaged for 

 life. Gentle and repeated touches with an acid, so as to destroy 

 a thin pellicle at a time, is the best method for their removal 

 when so situated. 



The "grapes" of chronic grease are similar to warts, con- 

 sisting of thickened epidermis and of enlarged papillae and 

 sebaceous follicles ; they are best removed with the actual 

 cautery; shaved off, in fact, by a sharp-edged piece of iron 

 heated to a red heat. 



Another kind of epithelial tumour is found in the vagina, 

 especially of the bitch, larger than a wart, with a lobu- 



lated surface, and much vascu- 

 larity, having a tendency to bleed. 

 Several of these vegetations by con- 

 fluence form a large tumour ; they are 

 to be removed by being enclosed in 

 a clam, and cut off by the cautery. 

 They may be named as vascular epe- 

 thelial tumours. 



Fia. 101. — Fat cells, from tum- 

 our removed from vagina of a 

 cow by Mr. Cartwright of Whit- 

 church. Case described in Veter- 

 inarian for March 1872. 200 

 diam. 



III. — FATTY TUMOURS OR LIPOMATA, 



Consist of normal fat cells packed to- 

 gether. They occasionally attain a very 

 large size. ^ 



When situated externally, 



^ A case of this nature occtirred in the practice of Mr. Cunningham of Slateford, 

 •where the tumour weighed 236 lbs. It involved the liver, spleen, and mesentery, 

 and was found, microscopically, to be composed of fat cells ; although externally, 



