Substitutional Analysis

In the preparation of this book, I have been much indebted to various colleagues and friends. In particular I have received much helpful advice and constructive criticism over a period of years from Professor H. W. Turnbull, E.R.S., and Dr. W. Ledermann, both of whom have also assisted me in proof reading. I also wish to express my grateful thanks to Professor Sir Edmund Whittaker, E.B.S., and the Edinburgh University Press for their cooperation and invaluable assistance in the production of the book.