MONSTER.) BIBLIOGRAPHY.-T. H. Morgan, Heredity and Sex (1914) ; R. GoldBibliography.-T. H. Morgan, Heredity and Sex (1914) ; R. Gold- schmidt, The Physiology and Mechanism of Sex-determination (1923) ; and F. A. E. Crew, The Genetics of Sexuality in Animals (1927).
(F. A. E. C.)