122 



FEEDING EXPERIMENTS WITH ISOLATED FOOD-SUBSTANCES. 



Chart XCVI. 



Terminated 



280 



Chart XCVI (rat 36, male) shows the failure of inhibition of growth to 

 cheek the "capacity to grow." The rat was stunted on gliadin food for 37 

 days (period 1) and on casein food for 12 days (period 2) and completely 

 recovered growth on mixed diet during 217 days (period 3). The diet for 

 periods 1 and 2 was as follows: 



Constituents. 



Per. 1. 



p. a. 



Gliadin (from wheat) ... 18.0 



Starch 29.5 



Sugar 15.0 



Agar 5.0 



Salt mixture 1 2.5 



Lard 30.0 



Constituents. 



Per. 2. 



p. cl. 



Casein 18.0 



Starch 29 . 5 



Sugar 15.0 



Agar 5.0 



Salt mixture I . . . 2.5 



Lard 30.0 



Chart XCVI I (rat 37, male) shows unimpaired capacity for growth on 

 mixed diet and milk diet after an earlier period of stunted growth on gliadin 

 diet for 37 days (period 1) and casein diet for 12 days (period 2). Part of 

 the period of growth was accomplished on milk food, part on mixed food, 

 the change being made at 3 to mixed food, at 4 to milk food, and at 5 to 



