124 



HAND-BOOK OF PHYSIOLOGY. 



from the base of each cell which is unbranched and becomes continuous 

 with the axis-cylinder of a nerve-fibre. 4. Numerous ganglion-cells: 

 termed the "granular formation" by Meynert. 5. Spindle-shaped and 

 branched ganglion-cells of moderate size arranged chiefly parallel to the 

 free surface (vide Fig. 335). 



FIG. 335. 



FIG. 336. 



fc' 



FIG. 337. 



FIG. 335. The layers of the cortical g;rey matter of the cerebrum. (Meynert.) 

 FIG. 337. [Drawn by G. Munro Smith from ammonium bichromate preparations by E. C. 

 Bousfield.J 



According to recent observations by Bousfield, the fibres of the medullary 

 centre become connected with the multipolar ganglion cells of the fourth 

 layer, and, from these latter, branches pass to the angles at the bases of the 

 pyramidal cells of the third layer of the cortex (Fig. 337, a). From the 

 apices of the pyramidal cells, the axis-cylinder processes pass upward for a 



