Cambridge University Press 



THE DETERMINATION OF SEX 



By L. DONCASTER, Sc.D., Fellow of King's College, Cambridge. 

 Demy 8vo. With frontispiece in colour and 22 plates. 7s. 6d. net. 



Contents: The Problem. — The Nature and Function of Sex.— The Stage 

 of Development at which Sex is detei-mined. — Sex-limited Inheritance. — The 

 Material Basis of Sex-determination. — The Sex-ratio. — Secondary Sexual 

 Characters. — The Hereditary Transmission of Secondary Sexual Characters. — 

 Hermaphroditism and Gynandromorphism. — General Conclusions on the 

 Causes which determine Sex. — The Determination of Sex in Man. — 

 Glossary. — List of Works referred to. — Index. 



HEREDITY IN THE LIGHT OF 

 RECENT RESEARCH 



By the same author. Royal 16mo. With 12 figures. Cloth, Is. net; 



leather, 2s. 6cl. net. Cambridge Manuals Series. 



' ' Mr Doncaster has performed a remarkable feat in condensing into so small a space such an 

 admirable introduction to the study of heredity in the light of recent research. He writes clearly, 

 without dogmatism, he treats fairly both the Mendelian and the biometric schools." — Nature 



MENDEL'S PRINCIPLES 

 OF HEREDITY 



By W. BATESON, M.A., F.R.S., V.M.H., Director of the John Innes 

 Horticultural Institution. Tliird impression with additions. With 

 3 portraits, 6 coloured plates, and 38 other illustrations. Royal 8vo. 

 12s. net. 

 " A. new impression cannot fail to be welcomed.. ..il/sntiers Principles of Heredity is already 

 a classic. It marks a position of stability towards which previous work is now seen to have 

 logically converged, and from which new and active research is to-day no less logically diverging. 

 The various waves of biological thought are constantly intersecting, mingling, aud passing on 

 with altered rhythm, but it rarely happens that so many meet together at a nodal point as during 

 the last decade.. ..As an analysis of that point, as a picture of how it has come into being, and as 

 a foreshadowing of happenings in the near future, MendeVs Principles stands alone, and it is 

 good to know that the generation of students now growing up cannot be cut off from the posses- 

 sion of a book so fuU of inspiration." — Gardeners' Chronicle 



THE METHODS AND SCOPE 

 OF GENETICS 



By W. BATESON, M.A., F.R.S., V.M.H. 



Crown 8vo. Is. 6d net. 



" Professor Bateson tells how Mendel's law works out with the colours of certain flowers, 

 moths, and canaries, and with colour-blindness in men and women. More than this, he describes 

 the outlook over this field of research in a manner that will greatly interest and attract all in- 

 telligent people, for, as he rightly says, ' Mendel's clue has shown the way into a realm of nature 

 which for surprising novelty and adventure is hardly to be excelled.' " — ilorning Post 



Cambridge University Press, Fetter Lane, London 

 C. F. Clay, Manager 



