326 



riddle: control of sex ratio 



TABLE 4 



Breeding Records — 1914 



(St. alba d> X) 9 St. risoria 641 (old) ; 1913 = 42 eggs. 



Series 1 



1st 47 = 5 d" : 12 9 ; 2nd 17 = 4 d* : 13 9 ; last 17 = 2 <? : 15 9 



