^nti 



ire 

 the 



Hi 



Prob; 



nay 



do 



Ts, ai 

 a n eoi 



areoi 



ble( 



)thef 



I mai 



areot 

 in! 

 duct 



tei» 





dii! 



HUTTONIAN THEORY. 



29 



dity much mor 



yki^ finer kind 



f 



perfe(5t 

 larble. 



Th 



th 



fal 



d many others that 



have a ftruclu 

 been foftened 

 before this c 



highly cryftalUzed, muft h 



deg 



yft 



{liort of fufion 



r 



uld take 



on til' Even the petrifacl 



hich abound fo much 



m 



flones. tend to eiiablifti 



fame fad: 



for they poiTefs a fparry ftrudure, and muft 

 acquired that ftrudure in 



the 



iition fr 



fluid to a folid ftate 

 5. In' accounting, by 



the operation of heat 

 for thefe appearances of fluidity, Dr Hutton ha; 



proceeded on the principle 



dy laid d 



as conformable to analogy, that calcareous earth 

 under great compreffion, may have its fixed ai 



d in it, notvvithftanding the adion of 



fe 



into fu 



at, and may, by that means, be reduced 



J 



Ion, or into a ftate approaching to it. 



* 



In all this, I do not think that he has departed 

 from the 



gation. 



ftone was once foft, its fragments retaining at 



ftricleft rules of philofophical invefti 

 The fads juft ftated prove, that lime 



the fame time their pec 



fo 



we 



know of 



ft 



, an effedt to 

 but thofe of 



? 



and therefore, thouQ-h we could not con- 



whi 

 fire 



jedure how heat might be applied to limeftone 

 fo as to melt it, inftead of reducing it to a calxj 

 wefhould, neverthelefs, have been forced to 



fuppofa 

 * Note- viii. 



