302 



PLATE VI. 



FIGURE 1. 



Type of cell lamination in the postoentral area ; drawing from a section through the paracentral 

 lobule, immediately behind the upper extremity of the fissure of Rolando. 



It is important that this should be compared with the precentral drawing, Plate III. figure 2, 

 and the following points noticed. The plexiform layer (1) is shallower. '2 and 3 show no differences 

 of consequence. The external large pyramidal cells (4) form a more prominent layer, and the 

 individual members are more elongated and more richly supplied with chromophilic material. The 

 layer of stellate cells (5) is deep and sharply defined. At 6 there is an entire absence of " giant " 

 cells, but elements similar in size and structure to those found at 4 are recognisable ; they are, 

 however, not so numerous. The fusiform layer (7) does not call for comment- 

 Low power drawing, x * T - ; high power, x -y-. 



FIGURE 2. 



Intermediate postcentral type of cell lamination. : -f-. From a section half-way down the post- 

 central gyms and towards the posterior edge. The layers of large pyramidal cells at 4 and 6 are 

 weakly represented compared with those in the postcentral area proper, Figure 1. 



