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essential parts. All this indeed has been 

 so generally understood and followed in 

 practice, that I should not have dwelt upon 

 it even so long as I have, but for the sake 

 of pointing out the reason, why one princi- 

 pal cause of the beautiful cannot take place 

 in the general forms of buildings ; and 

 why angles, which certainly are not beauti- 

 ful separately considered, must perpetually 

 occur. Still, however, among the more es- 

 sential parts of architecture, those are the 

 most beautiful, which either form an easy 

 curve, or, from their round and polished 

 surface insensibly steal from the eye, and 

 thereby approach most nearly to the effect 

 of the waving lines ; such as columns, 

 arches, domes, &c. 



No building is more generally admired 

 for its beauty, than what is usually called 

 the temple of the Sybil at Tivoli: let us 

 consider then how far it possesses the qua- 

 lities of beauty as they are recapitulated by 

 Mr. Burke for the purpose of comparing them 

 with those of the sublime. "In this comparison, 



