CONTENTS 



CHAPTEB PAGB 



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 



be 



