Instinct 



165 



birds teach their fledglings to fly, and ants their young their 

 place in the community of the nest, and that animals imi- 

 tate each other, it is quite possible, and indeed probable, 

 that an instinct may be steadily improved throughout suc- 



'^v^s^S 

 FIG. 32. Young ducks catching moths. (From St. John's Wild Sports.) 



cessive generations by the intelligence of the individuals of 

 a species, without any acquired character being inherited. 



The possible factors in the evolution of instinct are 

 therefore 



(i) Natural Selection, which might develop innate 

 capacity this is certainly insufficient for the 

 development of form, and therefore, probably, also 

 of mind. 



