250 



PHYSICAL EXPRESSION. 



ability" quantity, time, kind. The impression 

 made at one time may not be immediately followed 

 by an outcome ; the outcome may be long delayed, a 

 mere question of the attribute time; it may be 

 delayed till certain forces again act upon the subject 

 An impression may be latent till certain circum- 

 stances call the effect of that impression into 

 activity. 



We cannot know the impression upon the brain 

 itself ; we only know the effect in the outcome of 

 that impression. 



A child of four years old quietly looks at some 

 one putting a letter into a pillar post ; we cannot 

 at the time see the impression produced upon the 



