MORGAN, T. H. 



1909. "A Biological and Cytological Study of Sex Deter- 

 mination in Phylloxerans and Aphids." Journal of 

 Experimental Zoology, 7, pp. 239-352. 



1910. "Sex-limited Inheritance in Drosophila." Science, 

 N. S., 32, pp. 120-122. 



1911. "The Application of the Conception of Pure Lines 

 to Sex-limited Inheritance and to Sexual Dimorphism." 

 The American Naturalist, 45, pp. 65-78. 



Russo, A. 



1909. "Studien liber die Bestimmung des weiblichen 



Geschlectes." G. Fischer, Jena. 

 WILSON, E. B. 



1909. "Recent Researches on the Determination and 

 Heredity of Sex." Science, N. S., 29, pp. 53-70. 



1910. "The Chromosomes in Relation to the Determina- 

 tion of Sex." Science Progress, 5, pp. 570-592. 



For references to the earlier literature see CU^NOT and 

 BATESON. 



