IV] 



Post central or Sensory Area 



91 



sections stained with aniline blue black great numbers of enormous neuroglia colls with huge vascular 

 processes were seen throughout the cortex, and even in the white substance below, in fact the glial hyper- 

 trophy and proliferation was far greater than any I had seen before, even in the most advanced cases of 

 general paralysis. Thickening and over-cellularity of the blood vessels were seen on a similar scale. 



FIG. 9. 



A drawing from a corresponding situation in a normal brain, for comparison with figure 8. 



Both these sections were stained with aniline blue black (fresh method of Bevan Lewis). Leitz eyepiece drawing 

 apparatus. Zeiss apochromatic lens, 4 mm. 



The layer of small pyramidal cells was recognisable and contained some healthy elements. 



The layers of medium sized, and large external and internal pyramidal cells had suffered destruction, 

 which was extreme in degree. On the Rolandic side .of the sections it was impossible to find a single cell 

 belonging to these laminae which had preserved its normal form, and only a few indefinite pale-stained masses 

 remained to indicate the position of cells in the ultimate stage of disintegration (text figures 8 and 9). 

 On the crown of the convolution, however, a few normal elements appeared, and still more were evident on 

 the posterior side. 



The position of the layer of stellate cells could be determined, but the band formation characterising the 

 normal condition was far from distinct. 



No normal elements could be seen in the fusiform layer, only sunken, processless elements. 

 The sections stained by the method of Nissl amply confirmed the foregoing. 



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