Section 2. Section 4 of the Original Has Been Omitted, Since Its

contents seemed to be sufficiently emphasized in the other sections of the book. The numbers of the following sections differ, therefore, from those of the German text. The translator regards this as insignificant, since his intention is not to aid his brother-psychologists in making themselves acquainted with Ebbinghaus’s views,--for this end they are referred to the German original,--but to furnish an elementary text-book for the English-speaking student. Wherever there was any doubt as to the comprehensibility to the American student of any application or illustration of the laws discussed by the author, the translator has unhesitatingly sacrificed the interest of the professional psychologist to that of the beginner-student. In a few places he has made slight additions to the original; for instance, figures 7, 8, and 9 are his own property. But he has decided to abstain from enumerating all changes, since this would be of interest only to the professional psychologist. In no case are his additions opposed to the author’s views.

The questions added to each section are not exercises to be worked out by the student or puzzles to be solved by the general reader. They are intended to serve as an aid to the intelligent perusal of the book, by directing the reader’s attention to the essential contents of each section.

M. M.

CONTENTS

INTRODUCTION

PAGE

A SKETCH OF THE HISTORY OF PSYCHOLOGY 3