1. Bashford, E. F. andMurray, J. A. (1905): On the occurrence of heterotypical mitoses in cancer. Proc. of the Roy. Soc. of London (B)77.
2. Farmer, J. B., Moore, J. E. S., andWalker, C. E. (1903): On the resemblances exhibited between the cells of malignant growths in man and those of normal reproductive tissues. Ibid.72.
3. - Id. (1905): On the cytology of malignant growths. Ibid.77.
4. Goldschmidt, R. (1923): The mechanism and physiology of sex determination. New York: Geo. H. Doran Co.
5. - Id. (1926): Bemerkungen zum Problem der Geschlechtsbestimmung beiBonnellia. Biol. Zentralbl.46.