INTRODUCTION 



I 



EVOLUTION IN GENERAL 



'THHE last romance of Science, the most daring 

 •^ it has ever tried to pen, is the Story of the 

 Ascent of Man. Withheld from all the wistful 

 eyes that have gone before, whose reverent ignor- 

 ance forbade their wisest minds to ask to see it, 

 this final volume of Natural History has begun to 

 open with our century's close. In the monographs 

 of His and Minot, the Embryology of Man has 

 already received a just expression ; Darwin and 

 Haeckel have traced the origin of the Animal- 

 Body ; the researches of Romanes mark a begin- 

 ning with the Evolution of Mind; Herbert Spencer 

 has elaborated theories of the development of 

 Morals ; Edward Caird of the Evolution of Re- 

 ligion. Supplementing the contributions of these 



