CELL MASSES IN THE FOREBRAIN 459 
Fig. 46 Transverse section through the base of the ventricular ridge near its 
caudal end. From the same section as figure 11. Magnification 70 diameters. 
The relations are described in the text. The figure shows typical pallial walls 
laterally and ventially which appear to be involuted to form the ventricular ridge. 
