226 NAOKI SUGITA 
25 days © 
Chart 2 Giving for each litter in this study the relation between the body 
weight and the brain weight of the individuals. The capital letters for each 
small chart designate the litter. The data given in table 3 were plotted according 
to the advancing age in days. 
eamee=e (Observed body weight of the underfed, in grams. , 
o----0 Qbserved brain weight of the underfed, in grams. 
Observed body weight of the controls, in grams. 
------ Observed brain weight of the controls, in grams. 
For the body weight the scale is given on the left side and for the brain weight 
the scale is given on the right side of the chart. 
