Satyrinae, transparency in S. American, 42 _Sceleporus floridanus_, 108 Schaus, on birds as enemies of butterflies, 112 Seasonal dimorphism, 130 Seitz, 44, 52, 58 Shelford, 56 note S. American butterflies, mimicry among, 38 Sports, as foundation of mimetic resemblances, 70, 91, 143 Sweet-peas, experiments on, 91 Swynnerton, on contents of stomachs of birds, 114 _Telipna sanguinea_, 36 _Terias brigitta_, 35; _T. hecabe_, 110 _Thyridia_, 40, XIV. 3 _Tithorea pseudonyma_, X. 10 "Transparency group," in S. America, 39 Trimen, on mimicry in African butterflies, 13 _Tupaia ferruginea_, 121 Variation, difficulty of initial, 63 Wade, on relative abundance of the three forms of _P. polytes_ in Ceylon, 99 Wallace, on mimicry in Oriental butterflies, 12; on the conditions of mimicry, 50; on the females of _P. polytes_, 76; on initial variation, 64 Warning colours, 10, 11 Weismann, 1, 2 CAMBRIDGE: PRINTED BY JOHN CLAY, M.A. AT THE UNIVERSITY PRESS * * * * * SELECTION FROM THE GENERAL CATALOGUE OF BOOKS PUBLISHED BY THE CAMBRIDGE UNIVERSITY PRESS JOURNAL OF GENETICS. A periodical for the publication of records of original research in Heredity, Variation, and allied subjects. Edited by W. BATESON, M.A., F.R.S., and R. C. PUNNETT, M.A., F.R.S. The _Journal of Genetics_ is issued in parts as material accumulates, and a volume appearing, so far as possible, annually, consists of four such parts. The Subscription price for a volume is 30s net (post free) payable in advance; separate parts 10s net each. Vols. I, II and III (1910-14) are now ready. Price in four parts, paper covers, 30s net each; bound in Buckram, 34s 6d net each. MENDEL'S PRINCIPLES OF HEREDITY. By W. BATESON, M.A., F.R.S., V.M.H. Third impression with additions. Royal 8vo. With 3 portraits, 6 coloured plates and 38 figures. 12s net. "A new impression cannot fail to be welcomed by those who already have it as well as those who have it not.... _Mendel's 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, and 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, _Mendel's Principles_ stands alone, and it is good to know that the generations of students now growing up cannot be cut off from the possession of a book so full of inspiration."--_Gardeners' Chronicle_