CHARTS AND THEIR EXPLANATIONS. 



I05 



Chart LII. 



160 



140 



120 



100 



BO 



60 



20 40 60 80 - 100 120 140 



Days 



Chart LHI. 



150 



130 



HO - 



90 



70 



50 



30 



10 

 E 



20 



40 



60 80 



Days 



100 



120 



140 



Charts LII (rat 205, female) 

 and LIU (rat 207, female) show 

 initiation of favorable growth 

 when protein-free milk is added 

 to a dietary containing casein as 

 its sole protein in period 2. In 

 the preliminary period an unsuc- 

 cessful attempt was made to in- 

 duce growth by feeding different 

 proteins in rotation. The diet 

 was as shown in table. 



