136 FEEDING EXPERIMENTS WITH ISOLATED FOOD -SUB STANCES. 



Chart CXXVI. Chart CXXVII. 



terminated 



160 



140 



120 



100 



60 



40 



20 



20 40 60 80 



Days 



Charts CXXVI (rat xi) and CXXVII (rat xiv) show the failure of 

 well-nourished animals (see period 1) to be maintained on a diet in which 

 zein formed the sole protein. The diet consisted of 



