210 EVOLUTION 



Darwin when he is in his field watching his 

 earthworms, in his garden watching the bees, 

 in his greenhouse among his insectivorous or 

 moving plants, or in his study writing " The 

 Origin of Species," than when already as a 

 youth upon the "Beagle," he was keenly 

 collecting data which eventually formed the 

 foundation of his " Expression of the Emotions 

 in Man and Animals," a masterwork of com- 

 parative psychology; or, as a grandfather in 

 his easy-chair, keenly and kindly watching 

 the daily growth of his child-playmate, and 

 so laying foundations for that great science 

 of mental embryology still best known by 

 its fit and homely name of child-study ? A 

 naturalist, too, has a respect for embryology : 

 let him, then, take as guide the foremost 

 of American mind-embryologists, President 

 Stanley Hall (see the American Darwin Cen- 

 tennial volume, " Fifty Years of Darwinism "), 

 who after creating a very paradise for the 

 guild of brass instruments, and long and lead- 

 ing services to child-study, has of later years 

 applied himself to the no less fruitful and 

 perhaps even more important field of Ado- 

 lescence; that magic Dionysiac moment of 

 human metamorphosis, in which wisdom and 

 folly, madness and genius strive for mastery, 

 and ferment out from within the issues of 



