50 LECTURE I. 



the small cells belong, according to the prevailing termi- 

 nology, to the category of pus-corpuscles ; the larger 

 ones, which we may designate mucus-corpuscles or ca- 

 tarrhal cells, are partly filled with fat or greyish-black 

 pigment, in the form of granules. 



These structures, however small their size, possess all 

 the typical peculiarities of the large ones ; all the charac- 

 ters of a cell displayed by the large ones again present 

 themselves in them. But this is, in my opinion, the 

 most essential point that, whether we compare large or 

 small, pathological or physiological, cells, we always find 

 this correspondence between them. 



