196 PRACTICAL MICROSCOPY. 



gation may be seen penetrating the layer beneath, providing the cell 

 has been centrally sectioned. Large horns are projected from the 

 outer extremity of the cells, branches from which provide the 

 nerve-fibrils seen in the last-observed layer. The cell bodies take the- 

 eosin, and the nuclei the logwood.) 



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

 the low power. It consists of innumerable small, deeply hsema.- 

 stained bodies, usually spherical, which are, as is believed, mostly 

 neuroglia cells. These nucleated elements are embedded in an ex- 

 ceedingly fine matrix of neuroglia [Klein] fibrils. Search carefully 

 for the axis cylinder processes of the Purkinje cells which pierce 

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



7. The white subtahce. (This consists of medullated nerves 

 which arise largely from the cells of the second gray layer. Klein has 

 also traced fibres into the nuclear layer, and demonstrated their dis- 

 tribution to the small ganglion cells of the lamina, and to the network 

 of the outer gray substance.) 



