320 MAINJi AGRICULTURAL LXPIvRIM^NT STATION. I912. 



Maiings: A. With 6 ? 5 indicated to be of class i — fL^U. Fhh 

 ? Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed ., 9 10 2 



Expected 10.5 10.5 



Mean winter production of 5 ? 



in indicated class 64.44 eggs 19.80 eggs eggs 



B. With 3 ? ? indicated to be of class 3 — fl.J,. PU k- 



$ Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed 2 2 



, Expected 2 2 



Mean winter production of $ ? 



in indicated class 54-50 eggs 26.50 eggs 



C. With I ? indicated to be of class 6 = fhL^. Fhk. 



$ Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed o 2 o 



Expected 2 



Mean winter production of ? ? ■ 



in indicated class 4.0a eggs 



All 'i Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed 11 14 2 



Expected 12.$ 14.5 



Mean winter poduction 62.64 eggs 18.85 eggs eggs 



The families are small in this case. From both these pure 

 Barred Rock and the cross matings in which $ 564 entered, 

 however, there can be no doubt that he is a class 7 male. The 

 two zero birds are to be reckoned as 'somatic zeros' rather than 

 gametic. Both began laying at the very beginning of the spring 

 period, and made records which indicated to one famihar with 

 this sort of material that they belonged genetically in the 'Under 

 30' class and only by accident failed to lay some eggs during 

 the winter period. 



