4 8 



THE CONNECTIVE TISSUES. 



[CH. IV. 



remains of the original protoplasm of the cell, filled with fatty 

 matter, which is liquid during life, but is in part solidified (or 



Fig. 67. Group of fat-cells (F c) with capillary vessels (c). (Noble Smith.) 



sometimes crystallised) after death. A nucleus is always present 

 in some part or other of the cell-protoplasm, but in the ordinary 

 condition of the cell it is not easily or always visible (fig. 67). 



B 



Fig. 68. Blood-vessels of adipose tissue. A. Minute flattened fat-lobule, in which the 

 vessels only are represented, a, the terminal artery ; v, the primitive vein ; b, the 

 fat- vesicles of one border of the lobule separately represented, x 100. B. Plan 

 of the arrangement of the capillaries (<) on the exterior of the vesicles ; more highly 

 magnified. (Todd and Bowman.) 



This membrane and the nucleus can generally be brought into 

 view by staining the tissue : it can be still more satisfactorily 



