134 MAINE AGRICUI^TURAL EXPERIMENT STATION. 1909. 



TABEE XIV. 



Showing the Correlation between the Hatching Quality of Bggs 

 and Winter (November to March) Egg Production. Hatch- 

 ing Season of ipop. Pullets and Yearling Hens combined. 













Winter Eg 



a Production 





















>o 







>n 







>o 







10 







>o 







"5 







10 







lO 







10 



m 







10 







1 



7 



^ 



7 



T 



1 



T 



in 



1 



Y 



y 



1 



1 



1 



t 



* 



? 



? 









1 



1 







10 







lO 







^ 







10 







10 







10 







lO 







lO 



(-) 













>o 



rH 



tH 



(N 



CM 



CO 



n 



•* 



^ 



10 



lO 



CO 



!D 



i> 



i> 



00 



00 







H 



a 



0- 5 









1 





2 



2 



1 





1 







1 



3 













11 



m 



5-10 



- 



— 



— 



_ 



— 



— 



— 



1 



1 



1 



— 





— 



— 



- 



- 



_ 



_ 



- 



3 







10-15 



_ 



_ 



_ 



_ 



_ 



_ 



1 



1 



_ 



_ 



_ 





_ 



_ 



1 



_ 



— 



_ 



- 



3 



< 



15-20 



— 



_ 



_ 



_ 



_ 



— 



1 



_ 



— 



_ 



1 





1 



1 



_ 



— 



_ 



_ 





4 



20-25 



1 



1 



— 



— 



— 



— 



— 



— 



— 



— 



— 



— 



1 



— 



— 



1 



— 



- 





4 



25-30 



— 



_ 



— 



— 



— 



— 



— 



— 



1 



— 



— 



— 



- 



_ 



- 



— 



— 



_ 



- 



1 



a 



30-35 



— 



— 



— 



1 



— 



— 



2 



— 



2 



1 



— 



— 



— 



— 



1 



— 



1 





- 



8 



w 



35-40 



— 



_ 



— 



— 



1 



1 



_ 



_ 



2 



_ 



_ 



1 



_ 



_ 



_ 



— 



_ 



_ 



- 



5 



40-45 



1 



_ 



1 



4 



1 



IJ 2 



_ 



2 



— 



1 



1 - 



1 



2 



- 



_ 



_ 



_ 



17 



.4 



45-50 



_ 



_ 



1 



— 



1 



— 



1 



- 



- 



- 



— 



1 



1 



— 



— 



1 



— 





- 



6 



h 



50-55 



1 



_ 



— 



1 



1 



— 



5 



4 



1 



— 



] 



— 



— 



1 



1 



1 



— 





- 



17 





55-60 



1 



1 



1 



— 



- 



2 



— 



_ 



1 



- 



1 



— 



1 



- 



— 



1 





- 



- 



9 



Ut 



60-65 



1 



— 



2 



3 



— 



— 



3 



- 



3 



— 



2 



2 



1 



— 



— 



— 



— 



— 



- 



17 





65-70 



1 



— 



2 



— 



— 



1 



— 



1 



1 



— 



1 



1 



- 



— 



— 



- 



- 



- 



- 



8 







70-75 





2 



- 



2 



— 



1 



1 



- 



1 



1 



— 



- — 



1 



— 



— 



- 



- 



1 



10 



y 



75-80 



— 



— 



— 



1 



2 



_ 



2 



1 



— 



1 



— 



1 1 



1 



- 



— 



- 



- 



_ 



10 



•z. 



80-85 



_ 



— 



— 



1 



1 



— 



— 



1 



_ 



— 



1 



_ 



— 



_ 



1 



1 



- 



- 



_ 



6 





85-90 



- 



1 



- 



1 



- 



- 



- 



— 



- 



- 



- 



- 



- 



- 



- 



- 



- 



- 



- 



2 



90-95 



— 



— 



1 



— 



- 



— 



— 



— 



— 



— 



] 



— 



— 





— 



— 



— 



- 



- 



2 



95-100 



- 



— 



- 



_ 



— 



- 



_ 



_ 



— 



1 



— 



- 



— 





_ 



- 



- 



- 



- 



1 



P^ 



100-105 



1 



- 



- 



-" 



- 



- 



- 



~ 



~ 



~ 



- 



~ 





~ 



- 



1 



~ 



~ 



~ 



2 





Totals. . . . 



7 



5 



8 



15 



7 



8 



20 



10 



15 



6 



9 



7 



7 



8 



6 



6 



1 







1 



146 



From an examination of these tables it is at once apparent 

 to the eye that there is a closer relation between the phenomena 

 here dealt with than was exhibited in Tables IX to XII inclusive. 

 The general trend of the entries, particularly in Table XIII, 

 from the upper right hand corner to the lower left hand corner 

 is unmistakable. As has been seen above (p. 116) in the case 

 of the correlation between fertility and hatching quality this 

 general sweep indicates that a sensible correlation will probably 

 be found. Calculating the coefficients for Tables XIII to XVI 

 the following results are obtained : 



Correlation between winter egg production and per cent, of 

 fertile eggs hatched : 



1908: 

 1909. 

 bined. 

 1909. 

 1909. 



r = 



-0.252 ±0.060. Pullets only. 



-o.133zbo.055. Pullets and yearling hens com- 



-o.01Ozbo.072. Pullets only. 



— 0.223 zb 0.084. Yearling hens only. 



