INHERITANCE OF FECUNDITY 227 



with one Cornish Indian Game 9 of class 2. From this mating 

 we have 



9 Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed 1 3 



Expected 2 2 



Mean winter production 49 eggs 19.33 eggs eggs 



Putting all the results together we have for all matings of B.P.R. 



cfcf X C.I.G. 9 9 



9 Progeny 



Winter Production: Over SO Under 30 Zero 



Observed 24 21 2 



Expected 26.5 20.5 



Mean winter production 46.22 eggs 15.86 eggs eggs 



We see here the same agreement between observation and 

 expectation which has appeared in the previous cases with pure 

 matings. 



Attention may next be turned to the reciprocal cross. 



Matings of Cornish Indian Game males and Barred Plymouth 

 Rock females. Four different Cornish males were used in these 

 matings and got adult daughters. Their breeding histories fol- 

 low. 



Matings of C.I.G. & 558. This bird was used in pure Cornish 

 matings and there shown to be of class 2 (C.I.G.) with constitu- 

 tion fLiU ■ fhk. His breeding history in producing Fi females 

 was as follows: 



Matings: A. With 2 B. P. R. 9 9 indicated to be of class 1 = /L1L2 . FIA. 



9 Proqeny 



Winter Production: Over 30 Under 30 Zero 



Observed 4 14 2 



Expected 15 5 



Mean winter production of all 



9 9 in indicated class 51.75 eggs 15.79 eggs eggs 



