CHARTS AND THEIR EXPLANATIONS. 107 



Chart LVI. Chart LVII. 



140 



120 



100 



80 



60 



40 



i c--'- Casein + Protein-free milk > 



20 40 60' 80 100 



Days 



Chart LVIII. 



20 40 60 



Days 



Chart LIX. 



Chart LX. 



Charts LVI (rat 238, female), LVII (rat 269, female), LVIII (rat 247, 



male), LIX (rat 252, male), and LX (rat 268, male) show a 



normal growth on a diet containing a single protein, ca- Casein is.o 



sein. The requisite inorganic salts were furnished in the SSS^?.^". H'.l 



added protein-free milk. This experiment illustrates arti- Ajj* 2 S- 



ficial nutrition with isolated food-substances from a very- 

 early period of life. The diet was as shown herewith. 



i 



