XXVTIT.] MIND. 17 



best to take an instance from among animals. Biras on Instance : 

 uninhabited islands show no dread of man, but after thev ^°^ ^'^^'^^ 



J acquire a 



nave become a mark for the sportsman for some time dread of 

 they acquire a dread of him, and this instinct becomes ™^'^' 

 hereditary.^ We cannot suppose that the birds which 

 inherit this fear of man have any conscious memory of 

 their parents or, it may be, their ancestors having been 

 frightened by man. They inherit the fear, but not the 

 consciousness of its cause. Selection will, no doubt, in- 

 crease this tendency, by the less timid birds being killed. 

 But the main cause is evidently hereditary habit. 



1 This illustration has been suggested to me by a passage in H. Spencer's 

 Review of Bain's Psychology, republished in H. Spencer's collected Essays. 



VOL. II. 



