516 



LECTURE XX. 



therefore, that all these external differences of form can 

 only serve to distinguish different species of the same 

 genus of tumours, but by no means different tumours, 

 from one another. There are connective-tissue [fibrous] 

 tumours of the surface, which manifest themselves in the 

 form of simple tubera (Knoten *), others which show 

 themselves in the form of warts and papillary tumours. 

 In just the same manner, there are cancerous formations 



FIG. 139. 



Fig. 139. Vertical section through a commencing cauliflower growth (cancroid) 

 of the neck of the uterus. On the still unchanged surface the tolerably large 

 papillEe of the os uteri are seen invested by a homogeneous, stratified layer of epi- 

 thelium. The disease begins first on the other side of the mucous membrane in the 

 real parenchyma of the cervix, where large, roundish or irregular, scattered groups 

 of cells (contained in alveoli) are disseminated throughout the tissue. 150 diame- 

 ters. 



* The term Knoten (Eng. knot, Lat. tuber) having reference rather to the form 

 than to the size of the tumour, is used in this work as a designation for all sorts of 

 tubcriforrn tumors, even the largest. Trans. 



