Z7^ 



Tumors. 



are lodged in the lymph centres having passed through the capil- 

 laries, because the lymph cells present in these foci have an attrac- 

 tion for them ; besides, apart from such a mode, the tumor cells 

 carried in the lymph stream are bound to enter the lymph glands, 

 where they are filtered from the lymph and remain. According to 

 Ribbert's views, progressive lymphomatosis is a true tumor forma- 

 tion. The successively involved glands show the inception of the 

 new formation often by well defined foci, sometimes only to be 

 recognized in the peripheral sinus of the node, this arguing for 



I-ympliosarconat(isis of liver of cow (low power). 

 Fig. 108. 



transference of the tumor element from a primary focus. By others 

 it is believed that some infectious process, bacterial in nature, is 

 connected, and that the microorganisms gain access to the lymph 

 glands in the lymph circulation and set up proliferative processes 

 in the nodes ; but as yet nioculation expenments have given no posi- 

 tive evidence. [The author's statement is true; yet glandular en- 

 largements, clinically regarded as belonging to Hodgkin's disease, 

 have repeatedly been found to be tuberculous in nature. The 

 lymphomatoses probably should be looked upon as of two types, one 



