INHERITANCE OF FECUNDITY 207 



B. With 2 9 9 indicated to be of class 3 = fLiU ■ FUU. 



9 Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed 2 5 



Expected 2.6 3.5 0.9 



Mean winter production of 9 9 



in indicated class 37.50 eggs 14.60 eggs 



C. With 1 9 indicated to be of class 4 = fL^h ■ FLih. 



9 Progeny 



Winter Production: Over SO Under 30 Zero 



Observed ; 2 2 



Expected 2 2 



Mean winter production of 9 9 



in indicated class 40.50 eggs 23.00 eggs 



All 9 Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed 7 • 12 1 



Expected 8 10 2 



Mean winter production 47.43 eggs 16.25 eggs eggs 



While the famihes in this case are small, the evidence of segre- 

 gation in about the expected proportions is clear. 



B.P.R. cf 556. Indicated constitution = fLxL-i . fkk. 



This male was hatched in 1908 and used in the breeding pens 

 in 1909. He proved a good breeder and got a fairly large number 

 of adult daughters which were tested in respect to fecundity in 

 the laying year 1909-10. As noted above he was the sire of class 

 4 cf 566. The breeding history of cf 556 follows. 



Matings: A. With 4 9 9 indicated to be of class 1 = /L1L2 . Fhh. 



9 Progeny 



Winter Production: Under SO Over 30 Zero 



Observed 8h 10| 4 



Expected 8.6 11.5 2.9 



Mean winter egg production of 

 all daughters in indicated 



class 43 . 75 eggs 19 . 60 eggs eggs 



