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FOREWORD
ued here with the desire to add further information to the interesting chemistry of diamonds and the aim of making larger synthetic diamonds.
It is the hope that you will enjoy reading it as much as the author has enjoyed writing it. If you do, he will be more than satisfied.
Much of the information has been obtained from many sources by reading books and journals over a period of years, especially from the libraries of Boston, Harvard and the University of Chicago. The list is too long to be writ­ten here. The principal references are given in the foot­notes.
The author is particularly indebted to Dr. Claude R. Flory who has read the manuscript and much of the proof. Valued assistance has been rendered also by Mrs. J. Wil-lard Hershey both in the preparation of the manuscript and in the proof-reading.
J. Willard Hershey
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