606 



THE NERVOUS SYSTEM 



core and is covered by a cortical layer. The central medulla contains 

 four paired masses of gray substance, the internal nuclei. 



THE CEREBELLAR CORTEX 



The cortex is divisible into an inner granular layer, and an outer 

 molecular layer. The granular layer in a fresh section appears rust- 

 colored; in a stained preparation it appears much darker and more 

 granular than the molecular layer due to the abundance of nuclei; it 

 is thickest over the summit of the folium, and thinnest in the depth 

 of the sulcus between adjacent folia. 



FIG. 524. FROM A SECTION OF THE CEREBELLAR CORTEX OF MAN. 



a-a, pia mater; b-b, molecular layer; c-c, granular layer; d-d, white matter of 

 the medulla. Nissl's stain. Photo. X 38. 



