3l6 MAINE AGRICUIvTURAI, EXPE;riMENT STATION. I912. 



All 2 Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed 21 15 o 



Expected 22.5 i^.^ 



Mean winter production 55-95 eggs 15.64 eggs 



It will be noted that there are two exceptions in these matings. 

 A class 7 5 X class 2 $ should give only daughters in the 

 'Over 30' class. Two out of the 14 adult progeny from matings 

 of this type laid fewer than 30 eggs in the winter period. The 

 record of one of these two was 28 eggs. There is no doubt that 

 this bird was a somatic variation belonging gameticalh'^ to the 

 'Over 30' class (cf. p. 302). In general it is obvious that 

 the agreement between observation and expectation here is very 

 satisfactory. Further the difference in average winter produc- 

 tion of the birds in the 'Over 30' and 'Under 30' classes is so 

 great as to leave no doubt of the real distinctness of these 

 classes in respect to fecundity. 



B.P.R. $ j62. Indicated gametic constitution = fLL-z. fhL-^. 



This male got comparatively few adult daughters. He was 

 1 sed during only one breeding season (that of 1910), having 

 been hatched in the spring of 1909. 



Matings: A. With 4 ? ? indicated to be of class i = fLiU.Fkk. 

 2 Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed 5 6 



Expected 5.5 5-5 



Mean winter production of 5 ? 



of indicated class 42.40 eggs 11.67 eggs 



B. With 2 $ 5 indicated to be of class 2 = /L,L,. FkL. 



$ Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed 8 o 



Expected 8 



Mean winter production of ? $ 



of indicated class 70.00 eggs 



All ? Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed 13 6 o 



Expected i3-5 5-5 o 



Mean winter production 59.38 eggs 11.67 eggs 



