362 LECTURE XV. 



stitutes one form of cerebral softening the product may 

 morphologically exactly correspond with what in the 

 mammary gland would have been quite normal. The great 

 difference, however, is this, that, whilst in the mammary 

 gland the cells which perish are replaced by a succession 

 of new cells, the disintegration of elements in an organ 

 which is not arranged so as to furnish such a succession, 

 leads to a permanent loss of substance. The same process 

 which in one organ yields the happiest, nay the sweetest, 

 results, brings along with it in another, painful lesions. 



If then you picture to yourselves these three different 

 physiological types, we have in the first case an accumu- 

 lation of fat in the cells in such a way, that at the close 

 of the process every single cell is entirely full of it. This 

 yields us the type of the so-called adipose cellular tissue, 

 or simply, adipose tissue, as it occurs in such large masses 

 especially in the subcutaneous tissue, where it on the 

 one hand gives rise to beauty, particularly in the female 

 figure, and on the other to the pathological conditions of 

 obesity or polysarcia. Fat-cells always possess a mem- 

 brane and fatty contents, but the fat so completely fills 

 up the interior, and the membrane is so extremely thin, 

 delicate and tense, that usually nothing else is seen than 



FIG. 107. 

 a 



Fig. 107. Adipose cellular tissue from the panniculus [adiposus.] A. Ordinary 

 subcutaneous tissue, with fat-cells, some interstitial tissue, and at b vascular loops ; 

 , an isolated fat-cell with membrane, nucleus and nucleolus. B. Atrophic fat in 

 phthisis. 300 diameters. 



