170 The Natural Eifld^ry jPartl V", 



PART IV. 



i 



X J" ' '". ' ■■■■■ii. I ,i. III I. ^ il , ». MMM . I .. .. I. 1... « | „ ,, ,. 



Of the Origin and Formation of 

 Metalls and Minerals. 



WHat I can advance, with com- 

 petent Certainty, about the 

 Fkiids of the Globe: the Sea, Springs, 

 Rivers, and Rain, I propofe in the 

 immediately foregoing, or Third Part 

 of this Eflay : As in the Second Part 

 of it I difpatch the Solids : Stone, Mar- 

 ble, Gravel, and all the other Terfe- 

 ftrial Matter of it, which is digefted 

 into Strata. That Part therefore com- 

 prehends the far greater fhare of that 

 Matter; and indeed all, excepting on- 

 , ly Metalls and Minerals ; which are 

 found much more fparingly and in 

 lefTer Parcels ; being either enclofed in 

 thofe Strata ( lying araongft the Sand, 

 Earth, or other Matter whereof they 

 confift) or contained in their perpen- 

 dicular Fiffures. And f/&e/e remaining 



ftiU 



