No. 628] 



EGG-WEIGHT 



and autumnal maxima, respectively, would afford a satis- 

 factory basis for establishing: the weight-production cor- 

 relations. 



To this end, therefore, the mean weight of ten eggs laid 

 by each member of the flock between the eleventh and 

 twenty-fifth days of ApriP^ was computed, and the differ- 

 ence between the mean weight of these ten eggs and the 

 mean weight of the first ten eggs laid by that hen at the 

 beginning of her laying performance calculated as a per- 

 centage-increase or as a percentage-decrease. It should 

 be added that the production during April was conducted 

 at so rapid a rate that, in tlie case of 28 individuals out of 

 37, it was possible to ol^taiii tlio ivcoivl of ton coox within 

 the dates mentioned. In the roniaiiidn- of individuals it 

 was necessary to transcend tlieso limits slightly. In no 

 instance, however, was it necessary to take eggs from a 

 date earlier than April 8, nor later than April 29. The 

 data thus acquired were redistributed according to the 

 percentage groups, and the results summarized in Table 

 III. 



TABLE III 



smaller percentage of iiu-rcaM' in .■-■L:--\\-('iulit. ^uc- 



