242 



THE ESSENTIALS OF HISTOLOGY. 



is here present a peculiar wavy lamina of grey matter, similar to that 

 in the olivary body, and known as the nucleus dentatus (n.d.). Other 

 isolated grey nuclei lie in the white matter of the middle lobe. 



The grey matter of the cerebellum consists of two layers (fig. 272). 

 The inner one (that next the white centre) is composed of a large 

 number of very small nerve-cells intermingled with a few larger ones 





FIG. 272. SECTION OF CORTEX OF CEREBELLUM. (Sankey.) 



, pia mater ; b, external layer ; c, layer of corpuscles of Purkin je ; 



d, inner or granule layer ; e, medullary centre. 



and some neuroglia-cells (granule layer, d). The outer layer (b) is 

 thicker, and is formed of neuroglia, with rounded and angular small 

 nerve-cells and neuroglia-cells scattered through it. Into its outer part 

 processes of the pia mater conveying blood-vessels pass vertically, and 

 there are also in this part a number of long tapering cells, somewhat 



