132 



THE TISSUES 



from the typical nuclear structure. It consists of (i) a nuclear mem- 

 brane, (2) an intranuclear network of linin and chromatin, (3) an 

 achromatic nucleoplasm, and (4) a nucleolus. 



The CYTOPLASM of the nerve cell consists of at least two distinct 

 elements: (i) Neurofibrils, and (2) perifibrillar substance. In most 

 nerve cells a third element is present, (3) chromophilic bodies. 



P 



*'= ^-^ii; u'# 





Fig. 76. — Ganglion Cells, Stained by Bethe's Method, showng Neurofibrils. A, 

 Anterior horn cell (human); B, cell from facial nucleus of rabbit; C, dendrite of human 

 anterior horn cell showing arrangement of neurofibrils. (Bethe.) In B the chromophilic 

 bodies are shown. In this picture the netirofibrils are shown as not anastomosing. 



(i) The neurofibrils are extremely delicate fibrils which are con- 

 tinuous throughout the cell body and all of its processes. Within 

 the body of the cell they cross and interlace and probably anastomose 

 (Figs. 76 and 77). 



(2) The perifibrillar substance (Fig. 76) is a fluid or semi-fluid 

 substance which both in the cell body and in the processes surrounds 



