the evolutionary history of nature may be considered as the author's
personal contribution to the subject. Nothing has been stated that has not
the sanction of high authority as well as of the writer's own conviction;
but it will be clear that the believers in the truth of the analysis as
made in the later chapters may become progressively fewer, as the various
aspects of human life and of human nature are severally treated.
Nevertheless, I believe that this volume presents a consistent reasonable
view that will not be essentially different from the conceptions of all
men of science who believe in evolution.




CONTENTS

CHAPTER PAGE

I. EVOLUTION. THE LIVING ORGANISM AND ITS NATURAL HISTORY 1

II. THE STRUCTURE AND DEVELOPMENT OF ANIMALS AS EVIDENCE OF EVOLUTION 35

III. THE EVIDENCE OF FOSSIL REMAINS 73

IV. EVOLUTION AS A NATURAL PROCESS 106

V. THE PHYSICAL EVOLUTION OF THE HUMAN SPECIES AND OF HUMAN RACES 150

VI. THE MENTAL EVOLUTION OF MAN 197

VII. SOCIAL EVOLUTION AS A BIOLOGICAL PROCESS 241