of the Pyrites. 255 



crude unmetaliic earth there may, indeed, be ibme, 

 but between water and a metallic earth, no ana- 

 logy •, but the latter may by means of middle fub- 

 ftances, viz. lalts, as appears from the effects of 

 fharp, corronve waters on metallic earths, be ap* 

 propriated to each other. 



Laftly, as little can pure induration prove of 

 any conlequence here, if, amidft many other cir- 

 cumflances we again only confider the beds and 

 figures of pyrites on drufe and /inter. 



But there are fome ftrong reafons againfl ima- 

 gining the generation of an ore to refemble the 

 fpringing of a plant out of the earth; one is, that 

 then we mull expect to find in the flone or rock 

 the roots, and, by their means, a connection of 

 the ore with other matters, as its origin •, but of 

 this we find not the lead trace either on drufe and 

 fifTures, where they often lie as loofe as if only 

 glued thereon by one end, or in the firm rock or 

 ftone. But the generation of ores rather happens 



ip-wife, as I think I have fhewn in chap. V. I 

 fhall only repeat one thing, that from hence, in 

 particular, it appears, why the ores, (landing on 

 :, generally prefent one fide only, namely, 

 where the weather or damp beats on them like a 

 driven fnow. 



Thefe ore-producing and ore- conveying damps 

 may, both in their original and incidental matters, 

 not happen to be of one and the fame mixtion and 

 influx •, yet it is not fo necefTary to fuppofe a very 

 great variety of them, feeing it is poilible, from 

 the internal coction, the length of time, the beds 

 or matrices, to aflign a reaion, why from one and 

 ;he fame damps different productions may arife. 



The 



