STUDIES LV THE EXrERIMENTAL ANALYSIS OF SEX. 611 



No. of Bird, 10; Jungle Fowl, o niontlis old; 

 Control. 



No. of Bird, 17; .Jungle Fowl, 3 months old; 

 Control. 



VOL. 56, PART 3. NEW SERIES. 



42 



