Dictionary — ix — Preface 



dix 4) , Table No. IV from their book "Statistical 

 Tables for Biological, Agricultural and Medical 

 Research." I am also grateful to Mr. A. J. Bate- 

 man, and to the Editors of Nature for permis- 

 sion to reproduce in Appendix 9, a table from 

 "Genetical Aspects of Seed Growing" which 

 appeared in Nature Vol. 157, p. 752. 



Finally I am deeply indebted to my wife for 

 her constant help in checking the numerous 

 typescripts which marked the gradual evolution 

 of this book. 



R. L. KNIGHT 



