5S0 



INDEX 



reduction of chromosomes, 

 143 

 Whitman, behavior of clef- 

 sine, 74 



Necturus, 74 



pigeons, 75, 76 



freedom and choice, 76, 77 

 Whitney, induction effects of 

 alcohol, 358 



Sex determination in Roti- 

 fers, 155 

 Wiesner, plasomes, 106 

 Wilder, Duplicate twins and 



double monsters, 331 

 Will, 72-78, 475 



absolutely free, 461 



denned, 486 



good and evil, 461 



inherited, 211 



nature, expression of, 460 



supreme faculty, 487 



training of, 486, 487 

 Wilson, distribution of factors, 



268 



of chromosomes, 269 



dwarf and double Amphi- 



oxus embryo, 323 

 on sex determination, 147, 

 148, 150, 171, 172 

 Winiwarter, on chromosomes 

 of man, 151, 152 

 oocytes of rabbit, 136 

 Wolff, "Theoria Generationis," 



86 

 Woltereck, induction effects of 

 cold, 358 

 preinduction, 358 

 Women's Colleges, influence on 



marriage, 446, 447 

 Woods "Heredity in Royalty," 

 212, 512 



X-rays, influence on spermato- 

 zoa, 319 

 X and Y chromosomes, 149, 171 



Yolk influence on size of eg™, 

 13, 14 



Zeleny and Mattoon, Selection 



in Drosophibi, 389 

 Zygote, Vi 



