780 VOLUNTARY MOVEMENTS. [Book hi. 



a complex chain. It is moreover a link of such a kind, that 

 while the changes which the breaking of it makes in the daily 

 life of a lowly animal, such as the dog, in whom the experience 

 of the individual adds relatively little to the nervous and psy- 

 chical storehouse transmitted from his ancestors, can hardly 

 be appreciated by a bystander, those which the breaking of it 

 makes in the daily life of a man, whose brain at any moment is 

 not only a machine fitted for present and future work but a 

 closely packed record of his past life, are obvious not only to 

 the individual himself, but to his fellows. 



