IVb- 



' . f' ' I r ', 



FIG. 270. Cytotectonic type of area striata 

 of calcaiiii"' tissure of adult man. (Brod- 

 mann.) Magnified (i6 diameters. 



FIG. 271. Gifranto-pyrainidal eytotectonic ty]' 



zone of adult man. The t,wo more superlicial layers 

 are not reproduced. (Brodmann.) Figs. 270, 271, 

 272 have all the same magnification of 66 diameters, 

 and show the different sizes of the cells and layers in 

 the different regions of the cortex. 



