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are not warranted in supposing there is 

 any sensation such as I have defined. 



Assuredly, motion does not necessarily 

 imply sensation ; it takes place where 

 no one ever yet imagined there could 

 be sensation. If I put on the table a 

 bason containing a saturated solution of 

 salt, and threw into it a single crystal ; 

 the act of crystallization would begin 

 from the point touched, and rapidly and 

 regularly pervade the liquor till it as- 

 sumed a solid form. Yet I know I should 

 incur your ridicule, if I suggested the 

 idea that the stimulus of the salt had 

 primarily excited the action, or that its 

 extension was the effect of continuous 

 sympathy. If also I threw a spark amongst 

 gun-powder, what would you think were 

 I to represent the explosion as a struggle 

 resentful of injury, or the noise as the 

 clamorous expression of pain ? 



