No. 615] EGG PRODUCTION 219 



tween 30 and 50 per cent, and a much sharper rise beyond 

 50 per cent. The mode comes at the 61 to 70 per cent, 

 group, while the maximum rate does not exceed 90 per 

 cent. It is interesting- to note that 8.5 per cent, of the 



flock laid at a rate exceeding 80 per cent, for the entire 

 winter period. 



The effect of variability in rate on total production for 

 a definite period is shown by the records given in Fig. 11. 



