GROWTH OF THE CEREBEAL CORTEX 



533 



Fig. 5 Diagram of the entire brain of the albino rat, seen from the side and 

 showing the level from which the horizontal sections were taken. HH', horizontal 

 section. 



Fig. 6 Diagram of the horizontal section, from the albino rat brain weighing 

 1.5 grams, indicating the position of the localities measured on the section and 

 the cortical cell-lamination. //' and ss' show respectively the levels from which 

 the frontal and the sagittal sections were taken. The lines PP', QQ', RR', SS', 

 TT', UU', WW, X' and YY' indicate the borders of areas which show differences 

 of cell-lamination and V indicates the rhinal fissure. 



