110 MASS. EXPEKIMENT STATION BULLETIN 211. 



55.5 755 



£ G G 5 



35 S 



Fig. 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.) 



1913-14 



19l5-'(6 



l9l8-")9 



+ l920-2t 



45.5 65.5 



EGGS 



Fia. 7. — Frequency Polygons showing the Percentages of Flocks having Winter Pro- 

 duction indicated. 

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



