EDITOR'S PREFACE

AUTHOR'S PREFACE

CONTENTS

THE SYSTEM OF PLAY Introduction

PART I PLAYFUL EXPERIMENTATION I. Playful Activity of the Sensory Apparatus 1 Sensations of Contact

PART II THE PLAYFUL EXERCISE OF IMPULSES OF THE SECOND OR SOCIONOMIC 358 ORDER I. Fighting Play

PART III THE THEORY OF PLAY

FOOTNOTES:

INDEX

142 ; fear, 167 ; opposition, 186 ; the comic, 230 ; voluntary

BY
KARL GROOS
PROFESSOR OF PHILOSOPHY IN THE
UNIVERSITY OF BASEL
AUTHOR OF THE PLAY OF ANIMALS

TRANSLATED WITH THE AUTHOR’S CO-OPERATION
By ELIZABETH L. BALDWIN

WITH A PREFACE BY
J. MARK BALDWIN, Ph. D., hon. D. Sc. (Oxon.)
PROFESSOR IN PRINCETON UNIVERSITY

NEW YORK
D. APPLETON AND COMPANY
1901

Copyright, 1901,
By D. APPLETON AND COMPANY.