THE CEREBELLUM 243 



most striking of the objects that have been revealed by the Golgi 

 method. (Fig. 158.) 



The branches of these cells spread out chiefly on planes at right 

 angles to the long axis of the convolution. Sections should there- 

 fore be made across the convolutions. 



6. The granular layer. (This is the layer seen so distinctly 

 with the low -power. It consists of innumerable small bodies, 

 deeply stained with haematoxylin, usually spherical, which are 

 ganglion- and neuroglia- cells. The ganglion -cells belong to the 

 second type. The majority of these cells are small. A few are 

 large. The small cells have protoplasmic processes Which ramify 

 in their own granular layer, and axis -cylinders which terminate in 

 the outer molecular layer. On the other hand the large ganglion - 

 cells of the granular layer have protoplasmic processes which 

 extend into the molecular layer, while the axis -cylinder processes 

 ramify in the granular layer. Medullated nerve -fibers from the 

 white matter form a dense plexus in the granular layer. Some of 

 these fibers are continued into the molecular layer. Search care- 

 fully for the axis-cylinder processes of the Purkinje cells, which 

 pierce this layer, and follow them into the white matter below.) 



7. The white substance consists of medullated nerve -fibers. 



