1910] SHULL—INHERITANCE OF SEX IN LYCHNIS 125 
color curve derived from the same families is nearly normal; with the 
mean departing but little from the 50 per cent. —— by Mendelian 
theory. 
STATION FOR EXPERIMENTAL EVOLUTION 
Cotp Sprinc Hargor, Lone Istanp 
LITERATURE CITED 
1. Bateson, W., Mendel’s principles of heredity. pp. xiv+396: Cambridge: 
University Press. 1909. See pp. 164-195. 
- CastLe, W. E., The heredity of sex. Bull. Mus. Comp. Zool. Harvard 
40:189. 1903. 
, A Mendelian view of sex-heredity. Science N. S. 29:395~400. 1909. 
4: Cornens, C., Bestimmung und Vererbung des Geschlechtes. pp. v+81. 
figs. 9. Leiinig: Gebr. Borntraeger. 1907. 
5. Doncaster, L., Recent work on the determination of sex. Sci. Progress, 
nO. 13, PP. 9O-104. Igo9. 
6. Doncdcren, L., AND Raynor, G. H. » Breeding experiments with Lepidop- 
tera. Proc. Zool. Soc. London 1:125. 1906. 
7- JOHANNSEN, W., Elemente der exacten Erblichkeitslehre. 8vo. pp. vit+-516. 
figs. 31. Jena: Gentex Fischer. 1go09. 
8. Morcan, T. H., A biological and cytological study of sex determination in 
phylloxerans nad —— Jour. Exper. Zool. 7: 239-352. pl. 1. figs. 23. 1909. 
- SHutt, G. H., The “presence and absence’? hypothesis. Amer. Nat. 43: 
410-419, 1909. 
, Color sgn in Lychnis dioica. Amer. Nat. 44:83-91. 1910. 
. Sreassuncan , Versuche mit didcischen Pflanzen in Riicksicht auf Ge- 
chlechisvenang Biol. Centralbl. 20:657-665, 689-698, 721-731, 753- 
785. 3 
nN 
© 
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tl 
N 
Witson, E. B. , Recent researches on the determination and heredity of sex. 
Science N. 5. poe 253-70. 1909. 
