PREDETERMINATION OF SEX 



T. H. MORGAN 



PLATE 1 



^ 





vr.- 





a 



<»*v* 





>»» 





<r\ 



k 



• 



"7 



,•:-■ 



o , 



M 



• ♦. 





7 



.^ 



vs 



t 



/ 



\ 



f^^lf' '\ 



•^r-'C • 





-> 



%V 



9 



^-'// 



;? 



E. M. WALLACE. DEL. 



319 



