vi Preface 



animals are evolved from different animals 

 through long lines of descent, and are not 

 suddenly and independently produced by the 

 fiat of a Creator, has attracted so much atten- 

 tion as to obscure the fact that the new view 

 has changed the form without changing the 

 substance of special creation. 



The reasoning used in the following pages 

 may be summarized as follows : 



Animals of the present day exhibit greater 

 intelligence and more physical strength than 

 existed in their ancestors of earlier ages. 

 The increase in intelligence from earlier geo- 

 logical ages to the present time is, in general, 

 a gradual one extending through the genera- 

 tions and necessarily involving heredity. The 

 question is as to how human intelligence got 

 into man in the line of descent from man's 

 ancestors. Or, more specifically, by what 

 means did some men become inherently more 

 intelligent than were any of their ancestors 

 a few generations previously? Were the 

 intellectual powers of these men the product 

 of special acts of creation and consequently 



