William James and Henri Bergson

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Of the six chapters of the book, two, in slightly different form, have been printed before, the first in the Philosophical Review, the fourth in Mind, and I acknowledge with thanks the editors' pernnss1ons to reprint these chapters. To my friends Dr. H. M. Sheffer, Mr. Alfred D. Sheffield, and Dr. H. G. Brown I owe a greater debt than I can repay for careful examination of the proofs and many valuable suggestions.