Section of the sensory cortex from the post-central convolution of-a monkey’s brain, stained with Cresyl Violet. Note the stratification of the cells, forming a number of layers of which the following can be recognized.

1. Lamina zonalis                                 }    

2. External granular layer                      }      Supragranular layers

3. Pyramidal layer                                 }   

4. Internal granular layer

5. Lamina ganglionaris                          }       Infragranular

6. Lamina multiformis                           }          layers

Below is the sub-cortical white matter. Note the large pyramidal cells in the lamina ganglionaris. The photograph is at a magnification of X 46. 

Original card