GROWTH BETWEEN BIRTH AND MATURITY 



65 



3. Growth between birth and maturity. The first observations 

 were made at the University of Chicago by Donaldson, Dunn 

 and Watson ('06) on stock rats fed mainly on milk-soaked bread 



TABLE 46 

 Showing the mean weights of the fetuses at ten ages during gestation 



TABLE 47 



Giving the crown-rump length of fetus in millimeters. Scrap diet only, 

 here measured are part of those used for Table 46 



The fetuses 



with corn as a staple. The values before fourteen days of age 

 were obtained from weighing different litters, each litter being 

 weighed only once. The original values at birth and for the first 

 ten days were plainly too high and have been replaced by new 



