282 POPULAR SCIENCE MONTHLY. 



experience. Soon this becomes common, and the animal may then 

 properly be said to learn, though there is no evidence that at this stage 

 utilization of experience is ever conscious. When consciousness once 

 becomes a factor in determining action, capacity to profit by experi- 

 ence is a measure of intelligence, and it is just this increased sensitive- 

 ness to experience that gives the facility in adjustment of which we 

 have been speaking. Intelligence restricts the action of natural selec- 

 tion by enlarging the individual's range of adaptation and by giving 

 insight into conditions and the power to create new ones. There is 

 greater latitude for variation without destruction, and variation, again, 

 may suggest other lines of progress by means of which nature's selection 

 may be guided, so that she may find those fittest who are most appre- 

 ciative of the larger, more universal environment which it is educa- 

 tion's privilege to conceive and foster. 





