294 



MICROSCOPIC ANATOMY OF THE ORGANS. 



220 and 221). Three main layers can be distinguished, namely, 

 -the granular, ganglionic, and molecular. 



1. The granular layer lies immediately on the medullary 

 substance. In it there are to be seen two kinds of cells : (a) 

 small granular cells and (b) large granular cells. 



(a) The small granular cells form the greater proportion of 

 this layer. They are very small multi polar nerve cells, which 



Diagrammatic representation of a longitudinal section through a convolution of the 

 cerebellar cortex. (After v. Kolliker.) P, Purkinje's cells; p, axone of cell of Purkinje; 

 K, granular cell ; w, axone of a granular cell ; Th, place of division of axonc of granular cell. 



give off an axone and a few dendrites ending in claw-like arbor- 

 izations. The axone runs outward at right angles to the sur- 

 face and divides in the outer layer of gray matter like the 

 letter T. The two branches run parallel to the surface of the 

 cortex and to the long axis of the convolution, and end freely. 

 This is shown in Figs. 221 and 222. 



