if 



b 



t 



ee^ 



othe 



ndto 

 may, 



ittliE 



Eng. 



lanq 

 t m 



id 



a 



hicli 

 •the 



11 



of 



ngf 



a 



P 



^ 





HUTTONIAN THEORY. 



27 



which it is compofed, are firmly and clofely 

 , h^.' united, without the help of any cementing fub- 



llance whatfoever. This appearance, which is 

 very common, feems to be quite inconfiftent 

 with every idea of confolidation, except an in- 

 cipient fulion, which, with the affiftance of a 



1 fuitable compreffion, has enabled the particles 



of quartz to unite into ftone. 



It has indeed been aiTerted, that the mere ap- 

 poiition of llony particles, fo as to permit their 

 corpufcular attraction to take place^ was fuffi- 

 cient to form them into Hone. To this Br Hut- 



r 



ton has very well replied, that, admitting the 

 poffibility of a hard and firm body being pro- 



I 



duced in this way, of which, however, we have 

 no proof, the clofe and compadl texture, the 

 perfedt confolidation of the Hones we are now 

 fpeaking of, would Hill remain to be explained, 

 and of this it is evident that the mere appo- 

 fition of particles, and the force of their mu- 



-(SJy tual attraction, can afford no folution. 



22. Thefe proofs that the ftrata mull have en- 

 dured the action of intenfe heat, though imme- 

 diately deduced from thofe of the filiceous ge- 



only, extend in reality to all the ftrata, of 



nus 



every kind, with wh 

 nated. 



they 



found alter 



It is impoffible that heat, of the inten- 

 fity here fuppofed, can have aded on a particu- 

 lar 



