CONTENTS 



CHAPTER PAGE 



I. EVOLUTION. THE LIVING ORGANISM AND ITS NATU- 

 RAL 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 



VIII. EVOLUTION AND THE HIGHER HUMAN LIFE . . 278 



