244 



NORMAL HISTOLOGY. 



to be presently described. The neurites of the cells of Purkinje 

 extend through the granular layer into the white matter and soon 

 acquire medullary sheaths (Fig. 226, o) ; but before they leave the 

 granular layer they give off collaterals, which re-ascend into the 

 molecular layer, where their teleneurites are in relations with the 



FIG. 226. 



Section of a cerebellar lamina perpendicular to its axis. (R. y Cajal.) ^4, molecular layer 

 of the gray matter ; B, granular layer ; C, white substance ; a, cell of Purkinje ; o, its 

 neurite, giving off two recurrent collaterals ; b, b, stellate cells of the molecular layer; d, 

 basket-like distribution of the teleneurites of one of their collaterals around the body 

 of a cell of Purkinje ; e, superficial stellate cell, which does not appear to come into rela- 

 tions with the bodies of the cells of Purkinje, but must lie close to their dendrites ; /, 

 large stellate cell of the granular layer; g, small stellate cell of the granular layer; h, 

 centripetal neurite of a " moss " fibre ; n, centripetal neurite distributed in the molecular 

 layer; j,m, neuroglia-cells. The arborescent dendrites of only one of the cells of Pur- 

 kinje are represented in the figure. Were those of the neighboring cells also represented, 

 the molecular layer of the gray matter would display an enormously complex interdigi- 

 tation. of such filaments. 



teledendrites of neighboring cells of Purkinje. These collaterals are 

 believed to occasion a certain co-ordination in the action of those 

 cells of Purkinje which are near each other. 



The stellate cells of the molecular layer (Fig. 226, 6, e) pos- 



