110 MASS. EXPERIMENT STATION BULLETIN 211. 



55.5 7 55 



EGGS 



1.3 5 5 



Fia. 6. — Integral Curves showing the Percentage of Each Flock having a Winter Egg 



Production as Great as that indicated, or Greater. 



No allowance made for November in 1912. (See Table II.) 



45.5 65.5 



EGGS 



Frequency Polygons showing the Percentages of Flocks having Winter 

 duction indicated. 

 1920-21 curve is for the original high line only. 



