26 MASS. EXPERIMENT STATION BULLETIN 307 



References 



Goodale, H. D., Ruby Sanborn and Donald White. 1920. Broodiness in 



domestic fowl. Mass. Agr. Exp. Sta. Bui. 199. 

 Goodale, H. D., and Ruby Sanborn. 1922. Changes in egg production in the 



Station flock. Mass. Agr. E.xp. Sta. Bui. 211. 

 Hays, F. A. 1924. Inbreeding the Rhode Island Red fowl with special ref- 

 erence to winter egg production. Amer. Nat. 58: 43-59. 

 Hays, F. A., and Ruby Sanborn. 1924. The inheritance of fertility and hatch- 

 ability in poultry. Mass. Agr. Exp. Sta. Tech. Bui. 6. 

 Hays, F. A. and Ruby Sanborn. 1926a. Broodiness in relation to fecundity in 



the domestic fowl. Mass. Agr. Exp. Sta. Tech. Bui. 7. 

 Hays, F. A., and Ruby Sanborn. 1926b. Winter cycle and winter pause in 



relation to winter and annual egg production. Mass. Agr. Exp. Sta. Tech. 



Bui. 8. 

 Hays, F". A., and Ruby Sanborn. 1927a. Intensit\' or rate of laying in relation 



to fecundity. Mass. Agr. Exp. Sta. Tech. Bui. 11. 

 Hays, F. A., and Ruby Sanborn. 1927b. Net correlations of characters con- 

 cerned in fecundity. Mass. Agr. Exp. Sta. Tech. Bui. 12. 

 Hays, F. A. 1927. The inheritance of persistency and its relation to fecundity. 



Proc. World's Poultry Congress pp. 92-95. 

 Hays, F. A. 1928. Relation of age of parents to hatchabilit\-, livability and 



fecundity in the domestic fowl. Poultry Sci. 7 (3): 106-115. 

 Hays, F. A. 1929a. The inheritance of egg weight in the domestic fowl. Jour. 



Agr. Research 38 (9): 511-519. 

 Hays, F. A. 1929b. Inbreeding in relation to egg production. Mass. Agr. 



Exp. Sta. Bui. 258. 

 Hays, F. A. 1930a. Increase in egg weight during the pullet laying year. 



Proc. Poultry Sci. pp. 16-19. 

 Hays, F. A. 1930b. Linkage relations between genes for egg size and genes 



concerned in high fecundity in domestic fowl. Proc. World's Poultr\- Congress. 



pp. 134-138. 

 Hays, F. A., and Ruby Sanborn. 1932. Types of intensity in Rhode Island 



Reds. Mass. Agr. E.xp. Sta. Bui. 286. 

 Hays, F. A., and Ruby Sanborn. 1933. The significance of length of biological 



laying year in production breeding. Mass. Agr. Exp. Sta. Bui. 298. 

 Hays, F. A. 1933a. Relation between body weight and age at sexual maturity. 



Poultry Sci. 12 (1): 24-25. 

 Hays, F. A. 1933b. Characteristics of non-broody and intense broody lines of 



Rhode Island Reds. Mass. Agr. Exp. Sta. Bui. 301. 

 Jul!, M. A. 1932. Poultry Breeding. John Wiley and Sons, New York. 



p. 228, pp. 311-312. 

 Lippincott, W. A. 1920. Improving mongrel farm flocks through selected 



standard bred cockerels. Kansas Agr. P2xp. Sta. Bui. 223. 

 Marble, D. R., and G. O. Hall. 1931. A statistical analysis of the results of 

 breeding high-line and low-line Leghorns. N. V. (Cornell) Agr. Exp. Sta. 

 Bui. 533. 

 Parkhurst, R. T. 1933. Some factors afi'ecting egg weight in the domestic 

 fowl. Poultry Sci. 12, (2): 97-111. 



