568 



Journal of Agricultural Research 



Vol. XII, No. 9 



A consideration of the number of individuals laying an excess number 

 of eggs for December over January (and also February) shows that 

 more of the Rhode Island Reds have a December excess than a January 

 (or February) excess. For the Barred Plymouth Rocks and White 

 Wyandottes more individuals have a January production in excess of 

 that of December, but a February deficiency. The difference in the 

 case of the Barred Plymouth Rocks, however, is not great. Neverthe- 

 less it is clear that the egg production of these two varieties does not 

 undergo a period of depression at the same season as that of the Rhode 

 Island Reds. 



TablB XI. — Distribution of individuals having a greater egg production in January 

 over February, or vice versa, arranged according to the maximiim length of any single 

 pause 



SUMMARY 



