90 FEEDING EXPERIMENTS WITH ISOLATED EOODSUBSTANCES. 



Chart XXVI 



260 



240 



220 



200 



180 



160 



140 



120 



100 



80 



60 



40 



20 



20 40 60 80 



100 

 Days 



120 140 160 



200 



Chart XXVI (curves, from Hatai, American Journal of Physiology, 

 1907, xviii, p. 311) shows the body-weights of albino rats at different ages. 

 C, conception, and O, the date of birth 2 1 days after conception. An illustra- 

 tion is given of the influence on growth of a period of 2 1 days of starvation 

 during early life. 



