Il6 FEEDING EXPERIMENTS WITH ISOLATED FOOD-SUBSTANCES. 



Chart LXXIX. 



20 



40 



60 



80 



100 



120 140 



Days 



160 



180 



200 



220 



240 



260 



Chart LXXIX (rat 152, female) shows the failure of maintenance on 

 a diet in which edestin formed the sole protein (period 2), until protein- 

 free milk was added to the diet (period 3). Period 1, on mixed food, is 

 introduced to show the previous satisfactory nutritive condition of the 

 animal. The diet consisted of mixed food for period 1 and for periods 2 

 and 3 was as follows : 



Constituents. 



Edestin 



Protein-free milk. . . 



Starch 



Sugar 



Agar 



Salt mixture I 



Lard 



Per. 2. Per. 3 



p. cl. 

 18.0 



0.0 



29St0 32.5 

 ISO 17.0 



S.o 



2.5 



25.0 30.0 



p. a. 



18.0 



28.2 



23.8 



0.0 



5.0 



0.0 



2S.0 



