SAMUEL BRODY 



767 



laying. This figure clearly shows the rate of growth to increase from 

 the time of hatching up to about 8.5 weeks of age when the rate of 



TABLE I. 



* The males were removed at the end of the twelfth and fifteenth weeks. The 

 other reductions in number are due to removal of chicks by crows and necessity 

 of removing chicks due to limitations of range conditions. 



t Average of ten embryos. 



growth is at a maximum; from this maximum at 8.5 weeks the rate of 

 growth decreases to a minimum at about 14 weeks. This is followed 

 by another cycle with a maximum at about 18 weeks of age ending 



