«L 



144 



ILLUSTRATIONS OF THE 



fcribing the circumftances of a chemical procef^ 

 which they had adually witnefTed. 



The idea of calcareous matter which really be- 

 longs to the Huttonian Theory, is, 



changes which the terraqueou 



th 



in all 



imd 



6 



in paft ages, th 



globe has 

 exifted. as 



does now, either in the form of limeftone and 



marble, or in th 

 or in the ilate ( 



f 



polition of 

 lis. fliells. 



Hon 



d bon 



animals. 



4 



T 



particle of 



of 



It may be true, that th 



m 



at prefent 



IS no 



exiil- 



g on the furface of the earth, that has not 



at fom 



me. mad 



a part of 



animal b 



but of 



is it 



f 



we can have no certainty, nor 



ny imp 



that we (hould 



It 



t) 



h to know, that the rocks of marble and 



limeftone contain in general 

 been formed from 



m 



m 



s of having 

 cled at the 



bottom of the fea 



d of this a iingle cockle 



fhell, or piece of coral, found included in a rock 



fuffici 



proof 



efpedl to the 



hoi 



mafs of which it makes a p 



The principal object: which Dr Hutton had 

 in view when he fnokQ of the maffes of mar- 



ble a 

 rpous 



d 



a 



f 



lie, as compofed of the calca-^ 

 mar.ne bodies *, was to prove, 

 that they had been all formed at the bottom of 



the 



* 



Theory of the Earth, vol. i. p. 23, 24. 



