96 THE CELL DOCTRINE. 



Mgs. 7 and 8, then in the luxuriance of its growth, 

 even at the expense of the formed matter, sends out 

 buds or processes, which soon drop off and become 

 separate pus-corpuscles. (Figs. 9 and 10.) These 

 are produced so rapidly that there is not time for 

 formed material to form upon their surface in any 

 quantity, and they have not time, therefore, to pass 

 on into epithelium. Hence pus-corpuscles are almost 

 pure germinal matter. So soon as the process ceases, 

 in consequence of the supply of pabulum being di- 

 minished, the germinal matter multiplies less rapidly ; 

 opportunity is permitted for the production of formed 

 material on its periphery, and the cell now passes 

 through the different grades of epithelium, as de- 

 scribed on pages 88, 89, and 90. The pus-corpuscles 

 are analogous to the deepest layers of epithelial cells 

 there referred to, which deep cells are in fact the 

 " mucus-corpuscles," so-called, well known to be mor- 

 phologically identical with pus-corpuscles ; the for- 

 mer being simply the young epithelial cell on its way 

 to become perfect epithelium, while the latter is the 

 same also, though never allowed to pass into the 

 perfectly formed state. 



Again, in pneumonia, and here we note where the 

 paths of Virchow and Beale separate more widely, the 

 so-called " exudation," or product which tills up the 

 vesicular portion of the lung, is regarded by Beale as 

 the result of a proliferation of minute "particles of 

 germinal matter (very much smaller than white blood- 

 corpuscles), which have passed out through the capil- 

 lary walls with the liquor sanguinis. 



In all inflammatory processes and fevers, this is 



