244 



EARL W. BENJAMIN 



Relation of eggs incubated to types of eggs produced by the respective birds 



hatched 



Some further features of the relationship existing between the types of 

 eggs incubated and the egg types produced by the respective birds hatched, 

 are shown in figures 18 to 25. These figures represent only a small part 

 of the available material resulting from the study, and are used here 

 merely to show typical conditions. 



Grams 



Weeks 6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 81 86 91 96 101 



FlG. 19. VARIATION OF SIZE (WEIGHT IN GRAMS), BY WEEKLY AVERAGES, OF EGGS PRO- 

 DUCED 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 



Pullets 8882F and 8939F, illustrated in figure 18, are from small eggs, 

 but pullet 8872F is from a large egg. It is evident that the tendency 

 is for a pullet to produce eggs of the same size as the egg from which 

 she was hatched. Sometimes small eggs are obtained from hens that 



