THE PROBLEMS IN MATING AND IN EGG PRODUCTION 97 



The first or earliest cockerels to crow are the most vigorous 

 and make the best breeders. 



High egg production is transmitted by both sire and dam. 



LAYERS 



WITH 



VIOOROUS 



CONSTITUTION 



LOVE OF THE BUSINESS 



TH! MAN AND THE LAND 



Fig. 39. — Rice's arch of poultry success. It will be noted from "this 

 illustration that constitutional vigor is the keystone, the summit and prin- 

 cipal stone to the arch of success. 



Pullets should be selected at eight weeks of age. Select 

 at this time those with best developed head, eyes, comb, and 

 body. Those well feathered over the back. 



The term rhythm of egg production is used rather than rate, 

 7 



