14 INTRODUCTION. 



This was a true intellectual rise. It was the Intellect at 

 work building the universe of which it is the key ; finding 

 anew that Nature also is working in every detail after the 

 laws of the human rnind. 



44 It is not, then, cities, or mountains, or animals, or 

 globes that any longer command us, but only man ; not 

 the fact, but so much of man as is in the fact" 1 



So in this research, I have felt that it is not so much the 

 trials and the discoveries made in this great and new field 

 of Nature which attract us, instructive and useful, even 

 momentous as they are for after all to many they are but 

 abstractions not these, so much as the breathing human 

 beings, who in the far past saw them and deciphered them 

 in the light of those other days, and of whose life they 

 formed a part ; who thought of them, and whose thoughts 

 lived on, and became immortal, and moved downward 

 through generation after generation to us ; even as our 

 thoughts, joining theirs, will pass through the ages to the 

 generations yet to come. 



1 Emerson : Natural History of Intellect. 



