GROWTH BETWEEN BIRTH AND MATURITY 



67 



Using the mean values in table 63 for the males from 10 days 

 of age on, and the corresponding values in table 64 for the fe- 

 males and taking the records for the mated females where given, 

 Hatai has determined the graph for which formulas 34 and 35 

 give the values for the male, and formulas 36 and 37 the values 

 for the female for this special series. By the use of these formu- 

 las the body weights have been computed for each day of age 



Growth in body weight Albino Rat 



Chart 3 Growth in body weight on age. Female albino rat. 



A. Observations of Donaldson, Dunn and Watson ('06). See table 64. 



B. Observations of Ferry, '13. See table 65. 



C. Observations of King (MS '15). Data from two series combined. See 

 table 67. 



from 10-100 days and at intervals of five days from 100-365 

 days (see table 62). 



The values given for the first ten days of age in table 62 have 

 been obtained from a revised series of direct observations Don- 

 aldson (MS '14). 



The weight at birth as here given, is for rats that have suckled. 



A second series of data for body weight on age have been 

 gathered by Miss Ferry. 



