New York
E. P. DUTTON & COMPANY
681 Fifth Avenue

Copyright, 1924
By E. P. Dutton & Company

All Rights Reserved

First printing, April, 1924
Second printing, June, 1924
Third printing, October, 1924
Fourth printing, December, 1924
Fifth Printing, December, 1924
Sixth Printing, June, 1925
Seventh Printing, June, 1925

Printed in the United States of America

CONTENTS

PAGE
I.Introductory[5]
II.Effects of the Physical Sciences[15]
III.The Increase of Organization[23]
IV.The Anthropological Sciences[43]
Conclusion[57]