562 



Journal of Agricultural Research 



Vol. XII, No. 9 



pullets and those hatched in April and May, the hatching date of the 

 latter being the same as for the Maine birds. 



The data for Barred Plymouth Rocks and Wyandottes have been 

 extracted from the Maine Station Bulletins 79 and 93 (j, 4) and have 

 been handled in essentially the same way. As these records have been 

 given for months only, only those birds that laid at least one egg in 

 November have been included in the tables. Dr. Pearl has stated to 

 the writer that his Barred Plymouth Rocks do not go broody during 

 the winter, so that we have assumed that broodiness does not enter as a 

 disturbing factor. The February records have been corrected to a 

 basis of 31 days. 



Table VII. — Mean monthly egg production of three breeds of pullets beginning to lay 



before December I 



[Broody records are excluded. No record is included where production began later than December i. 

 No Barred Plymouth Rocks or White Wyandottes that failed to lay in November are included. Febru- 

 ary records are reduced to a 31-day basis] 



BARRED PLYMOUTH ROCKS 



WHITE WYANDOTTES 



1899-I9OO . 



I90O-I9OI . 

 I9OI-I902. 



Total. 



34 



S8 



103 



12. 7 

 15-8 



15.0 



17.4 

 16. 9 

 13. 2 



16. 7 



14.7 

 13-4 

 12.7 



I3.8 



RHODE ISLAND REDS 



1913-14- 

 I915-16, 

 I916-17 , 



Total. 



fMarch 



1 April and May. 



fMarch 



\ April and May. 



|March 



\ April and May. 



20. 6 



21. 6 

 12. 9 

 12.8 

 12. 9 

 16.3 



15-2 



From Table VII it is clear that the egg production of February is usually 

 lower than that for January. Some exceptions are to be noted, especially 

 in the Rhode Island Reds, and also for 1 900-1 901 in the Barred Plymouth 



