322 MAINE AGRICUI.TURAL EXPElRIMENT STATION. 1912. 



yolk deposition or enlarging. There was no evidence that the 

 ovary had ever shown the slightest trace of functional activity. 

 But a normal bird hatched in March will exhibit signs of ova- 

 rian activity before May of the following year, even though she 

 belongs genetically to the 'Zero' class in respect to winter pro- 

 duction and does not lay. While the autopsy showed no ob- 

 vious lesion of ovary or oviduct, this by no means proves that 

 there may not have been present some deep-seated functional 

 derangement. 



B.P.R. $ 575. Indicated constitution = fliU.fhL2. 



This bird was used in the breeding season of 1910, having 

 been hatched in 1909. He proved not to be all that might be de- 

 sired as a breeder, being somewhat lacking in vigor of constitu- 

 tion. Partly on this account, he got comparatively few adult 

 daughters, as indicated in the following breeding history. 



Matings: A. With 5 $ 5 indicated to be of class i 3= fLiL^- Phk- 



? Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed 42 62 o 



Expected 5-5 5-5 



Mean winter production of $ $ 



in indicated class 47-50 eggs 15.67 eggs 



B. With 2 2 ? indicated to be of class 2 = /LiLj. F/.i/o. 



2 Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed 4 o o 



Expected 4 o 



Mean winter production of ? ? 



in indicated class 49-25 eggs 



C. With I ? indicated to be of class 3 -— fLxk. FUk. 



2 Progeny 



Winter Production : Over 30 Under 30 Zero 



Observed 2 i i 



Expected 2 2 



Mean winter production of 2 2 



in indicated class 55 -.50 eggs 16.00 eggs eggs 



