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PLATE XVII. 



FIGURE 1. 



Type of fibre arrangement in the lobus pyriformis. c $. 



Z = zonal layer. . S = supraradiary layer. B = line of Baillarger. R = radiary zone. The figures 

 and brackets to the right indicate the corresponding position of cell layers. 



From a section through as near as possible the central point of the lobule. 



FIGURE 2. 



Type of cell lamination in the lobus pyrifonnis. 



1, plexiform layer. '2, layer containing clusters of large stellate cells. 3, layer of pyramidal 

 cells, all more or less of equal size. In the centre of this layer a faint lamina of small stellate 

 cells may be seen. 4, layer containing no cells. 5, elongated pyrifonn cells like those seen in 

 pregenual area. 6, fusiform cells. 



Low power, x ?- ; high power, 



