4.54. J. B. JOHNSTON 
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Fig. 40 Transverse section through the pyriform lobe and the pallial thicken- 
ing to show the form and grouping of the cells. From the same section as figure 
24. Magnification 70 diameters. In the upper part of the figure enough of the 
pallium is drawn to show the importance of the peripheral layer of cells. The 
deeper cells are smaller and so closely crowded that their processes seldom show 
at this magnification. The thick dendrites of the larger cells in. the pyriform 
lobe, however, are clearly seen. It is evident that the large cell clusters belong 
to the pallium and not to the pyriform lobe. 
