STUDY OF SELECTIONS FOR SIZE, SHAPE, AND COLOR OF HENS' EGGS 247 



eggs has a large coefficient of variability, and this fact is reflected in the 

 curves and in the photographic record. 



Shape 

 index 



1 



Weeks 6 11 16 21 26 31 36 41 46 51 56 61 66 .71 76 81 86 91 % 101 



FlG. 22. VARIATION OF SHAPE, BY WEEKLY AVERAGES, OF EGGS PRODUCED BY DAM FOR 

 TWO YEARS AND BY PROGENY DURING EARLY PULLET PRODUCTION 



The heavy horizontal line in each division represents the character of the parent egg incubated; the 

 heavy curve represents the production of the chick hatched; the light curve represents the production 

 of the progeny of the chick. The dotted lines indicate that no eggs were produced during the periods which 

 they cover 



The color character has a much higher coefficient of variability, as may 

 be observed from figures 24 and 25. The pullets included in figure 24 

 were all of the brown-egg type, but in figure 25 both brown-egg and white- 

 egg types are shown. In these figures there seems to be a tendency for 

 the type of egg produced by the original pullet hatched, and her later 

 offspring, to resemble the original egg incubated. The writer can explain 

 the negative or practically zero correlation for the color character in the 



