3:4 



\"i;ti:kixau\' 



'ATliULUGV. 



jiapilla from a papilloma the cells will be found arranged around 

 the stroma instead of in nests as in carcinoma. 



Carcinomata are sometimes associated with other tumors as 

 fibromata and chondromata, but they are more fre(|uentlv in 

 combination with sarcomata, in which the sarcomatous tissue 

 forms the stroma of the carcinoma. The sarcoma cells are usually 

 of the spindle-celled variety. 



Epithelioma. — This type is the result of an ingrowth of epi- 

 thelium into the underlying structures and has been classed by 

 some as a sub-variet)' of carcinomata. In this variety of tumors 



there is crnisiderable evidence that thev are secondary to 

 surface injuries. A horse with a large fungoid growth beneath 

 the left eye was sent to a Kansas City veterinarian for treatment. 

 The history of the case brought out the fact that the tumor was 

 the sequel of a wire cut. Two similar cases of epitheliomata oc- 

 curred in the eye of two cows after severe attacks of keratitis. 

 Epitheliomata are not rare and may affect any of the domestic 

 animals. They always occur primarily in relation to epithelial 

 surfaces. The surface is usually denuded and there is usually 

 an acrid, fetid discharge. They may appear as elevated nodular 



