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HUTTONIAN THEORY. 



509 



rotation, the ring is a folid annulus generated 

 by the rotation of a very flat ellipfis about a 

 given point in its grea 

 the centre of Saturn. 



axis- 



coinciding with 

 it may be fo conflituted, 

 the attraction of Saturn, combined with the 



centrifucral fo 



t> 



may prod 



dicular to its furface 



force perpen 



d may enable detached 



parts to remain at reft, animals, for inftance 



Ik on its furface, and fluids to be 



h 



The {y{\ 



of S 



quili 



is thus fortified 



ft the lapfe of time, as effeaually as that of 



the earth itfeif ; and the 



by which this 



accomplifhed, feem to prove, that the weapons 

 bich time employs, are in both cafes the fame, 

 the flow wearing and decompofition of the 



folid p 

 duced 



Th 



fl 



)w wearing may have pro- 

 figure by which its adion is moft ef 



fedually refifted. 



444. Thus Dr Mutton's theory of the earth 

 comes at laft to conned itfeif with the refearches 



The 



of phyfical aftronoray. 

 drawn from this coincidence 



fion to be 



IS 



the credit 



f 



both fc 



ences. 



Whe 



two 



ellers 



ho fet 



out from points fo diftant £ 

 and the aftronomer, and wh 



diffe 

 agre( 



the mineralogift 

 follow routes fo 



meet at the end of their journey, and 

 their report of the countries through 



which they have paffed, it affords no flight 

 fumption,that they have kept the 



pre- 



ht way, 



and 



