242 



MORBID STATES OF THE BLOOD, ETC. 



nnclergone some very interesting changes, which enable us to 

 judge of the mode in which the mass of epithelial cells first 

 originates. If we follow up the well-knowai epithelial cylinders 

 to their origin, we shall find the earliest signs of the approaching 

 change to consist in the aggregation of from two to five epithelial 

 cells in spaces of unusual size, which are not bounded by the 

 delicate lymphadenoid reticulum, but are meshes in that net- 

 work of nucleated, protoplasmic corpuscles which traverses the 



Fig. 76. 



Epithelial cancer. Origin of the smallest nodules in the reti- 

 form tissue of the lym^^h-path of the gland, h. Meshes of 

 the reticulum ; a. Adjoining connective tissue. 



periplieral Ijmiph-sinus and the lymphatic channels of the 

 medullary substance. I believe these epithelial cells to have 

 migrated from the primary growth, and I regard the character- 



