Plate XXVII. On the left, a diagram of the cell-lamination in a small 

 part of the occipital cortex of an adult albino rat. On the right, a 

 drawing of the blood vessels in the same piece of cortex. X 112, 

 I., lamina zonalis; III., lamina pyramidalis; IV., lamina granularis 

 interna; V., lamina ganglionaris; VI., lamina multiformis. 



