104 FEEDING EXPERIMENTS WITH ISOLATED FOOD-SUBSTANCES. 



Chart XLVIII. 



Chart XLIX. 



Charts XLVIII (rat 210, female), 

 XLIX (rat 209, male), L (rat 215, male), 

 and LI (rat 216, male) show inadequate 

 growth, during period 1, on the casein 

 food with a small admixture of milk, fol- 

 lowed by resumption of growth on a diet 

 containing casein and protein-free milk in 

 a quantity equivalent to that of our milk- 

 paste diet which has proved sufficient to 

 promote normal growth. The compo- 

 sition of the food was as shown in table. 



Chart L. 



140 



120 



100 



60 



60 



40 



zo 



,00 120 



Chart LI. 



20 



40 



60 80 



Days 



100 



120 



