428 



HISTOLOGY 



Gray stratum. 



Ganglionic stratum . 



The inner granular stratum consists of many layers of small cells which 



by ordinary methods show 

 relatively large nuclei and 

 very little protoplasm. With 

 the Golgi method it appears 

 that besides neuroglia cells, 

 two sorts of nerve cells are 

 present, the small and large 

 granule cells; the former (Fig. 

 440) are multipolar ganglion 

 cells with short dendrites 

 having claw-like termina- 

 tions, and slender non- 

 medullated neuraxons which 

 ascend perpendicularly to the 

 gray layer and there divide 

 in T-form into two branches. 

 The branches run lengthwise 

 of the transverse folds or 

 convolutions of the cere- 

 bellum and have free un- 

 branched endings. In sagit- 

 tal scetions (Fig. 442) the 

 terminal branches of the neuraxons are cut across. The small granule 

 cells form the bulk of the granular stratum. The less frequent large 

 granule cells (Fig. 442) are 

 more than twice the size of the 

 small ones; their branched den- 

 drites penetrate the gray stra- 

 tum and their neuraxons, going 

 in the opposite direction, are 

 soon resolved into very numer- 

 ous branches which ramify 

 throughout the granular stra- 

 tum. 



The granular layer contains 

 also a thick network of medul- 

 lated fibers which enter it 

 chiefly from the white sub- 

 stance. A part of these fibers 

 end in the "eosin bodies" of 

 the granular stratum, which 

 are heaps of stainable particles found between the small cells (Fig. 441). 



FIG. 439. FROM A SAGITTAL SECTION OF THE CEREBELLUM 

 OF AN ADULT MAN. X 12. 



FIG. 440. DIAGRAM OF A SECTION OF THE CEREBELLUM 

 LENGTHWISE OF THE TRANSVERSE CONVOLUTIONS. 

 GOLGI'S METHOD. (Koelliker.) 



gr., Cells of the granular stratum; n. their neuraxons in 

 the granular layer and n'., in the gray stratum; p., p'., 

 Purkinje's cells. (From Bailey's "Histology.") 



