CONTENTS 



The general history of the flock 3 



The qualities of an improved flock 4 



The plan of breeding 4 



The changes in the average character of the flock 5 



The relation between fecundity characters and egg production 8 



Early sexual maturity 

 High intensity' 

 Winter pause 

 Broodiness 

 Persistency 



The hatchability problem . . *. 11 



The vigor problem 12 



The influence of inbreeding 13 



Breeding for egg size 14 



The selection of superior males 15 



The introduction of outside stock 16 



The types of records kept 16 



The breeding procedure recommended for increasing egg production 23 



References 26 



