CANCEROUS TUMORS. 



29 



scribed. I find in the whole process conclusive proof that the 

 small-celled infiltration between the fat cells is ultimately 

 transformed into a net-work of cancer cylinders. (Seven pho- 

 tographs, Nos. 52 to 58, shown.) 



I call attention next to a few illustrations drawn from a 

 couple of cases of cancer of the stomach. We have ahead}' 

 seen that Waldeyer derives cancer of the stomach from tlie 

 tubular glands of the mucous membrane ; from the bottoms of 



Fig. 5. 



Small-celled infiltration in the course of a minute vein and between the 



fat cells in the neighborhood of a mammary cancer. From 



photo-microgi'apliNo. 51. Magnified 200 diameters. 



these the cancer cylinders sprout, pass through the submucous 

 connective tissue, invade the muscular coat, and having pene- 

 trated this, involve the adjacent parts. 



Now all that I have seen of these growths leads mc to 

 admit that their primary seat is in the mucous membrane and 

 the subjacent connective tissue ; but the determination of the 

 precise origin of the cancer cylinders is surrounded by the 



