The author wishes to acknowledge his great indebtedness to Mr. Charles H. Seaver, who is the literary editor for the entire series of books on the ethics of economic activities. This volume would not have been possible without his aid. His painstaking care, infinite patience, and fine and incisive comments made an invaluable contribution to the organizing, refining, and sharpening of the whole manuscript. He is largely responsible for whatever value the volume has.
A. D. W.