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active and lively pleasures: it's nature, how- 

 ever, is eager and hurrying, and such are 

 the pleasures which spring from it. Let 

 those who have been used to observe the 

 works of nature, reflect on their sensations 

 when viewing the smooth and tranquil 

 scene of a beautiful lake, or the wild 

 abrupt and noisy one of a picturesque 

 river: I think they will own them to have 

 been as different as the scenes themselves, 

 and that nothing but the poverty of lan- 

 guage makes us call two sensations so dis- 

 tinct from each other, by the common 

 name of pleasure. 



AH that has been said in this chapter 

 with respect to the effects of roughness 

 and smoothness, of light and shadow, in 

 producing either irritation or repose, will 

 receive much additional illustration from 

 that art, by means of which the most strik- 

 ing characters of visible objects have been 

 pointed out to our notice, and impressed 

 on our minds. I now therefore shall take 

 a view of the practice and principles of 



some of the most eminent painters, and 



6 



