Mendel's Principles of Heredity. By W. Bateson, 

 M.A., F.R.S., V.M.H., Honorary Fellow of St Johns 

 College, Director of the John Junes Horticultural Insti- 

 tution. 



Third impression. Demy 8vo. pp. xvi + 414. With 3 portraits, 

 6 coloured plates, and 38 figures. Price \2s. net. 



Note to the third impression 



In the past three years the progress of Mendehan analysis 

 has been very rapid, and certain chapters of this book, 

 especially those dealing with Coupling and Repulsion, and 

 with the Heredity of Sex, are in essential respects out of date. 

 Knowledge of these subjects is at present in a transitional 

 stage, and I have endeavoured in a series of brief appendixes 

 to acquaint the reader with the nature of the principal advances 

 made, while awaiting an opportunity of rewriting the book. 



EXTRACTS FROM PRESS NOTICES 



Gardeners Chronicle. — A new impression cannot fail to be welcomed 



MendePs Principles of Heredity is already a classic. It marks a position of 

 stability towards which previous work is now seen to have logically con- 

 verged, and from which new and active research is to-day no less logically 

 diverging. The various waves of biological thought are constantly inter- 

 secting, 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, 

 MendePs Principles stands alone, and it is good to know that the 

 generation of students now growing up cannot be cut off from the 

 possession of a book so full of inspiration. 



Lancet. — Professor Bateson's admirable book puts out in the clearest possible 



manner the whole story of Mendeiism We have read this book with 



the greatest possilile interest and recomnjend it to all our readers. 



Journal of Botany. — The present work is the most complete treatise on the 



Mendelian aspect of Heredity which has yet appeared in English 



It is a privilege to have read Mr Bateson's work, and to have assimilated 

 the exposition of the principles which he so ably advocates, illustrated 

 with concise tables, as well as figures and coloured plates, which enhance 

 its value as a solid contribution to English Science. 



Contemporary Review. — Mr Bateson's long-expected volume on Mendeiism 

 undoubtedly marks a new stage, probably a new era, in the investigation 



of the origin of species It is, of course, impossible in so short a 



notice to do more than draw attention to a volume that works out in 

 close detail applications to natural phenomena of Mendel's wonderful 

 discovery. We can, therefore, merely commend in general terms a work 

 nf the first order in the thought of our generation. 



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