TABLE 3 



Shoiving, by generations, the average body weights at different ages of 117 males 



belonging in the sixteenth to the twenty-fifth generations of 



the B series of inbred rats 



TABLE 4 



Shoiving, by generations, the average body weight at different ages of 180 females 



belonging in the sixteenth to the twenty-fifth generations of 



the B series of inbred rats 



75 



