i6t the Natural Hifiory Part l W 



and lead my Reader a long and tedious 

 Jaunt in tracing out thefe metallick 

 and mineral Bodies : in purfiiing theni 

 through their feveral Mazes and Re^? 

 treats : through the Earth, the Water, 

 and the Air. And yet, long as it is^ 

 we are not got much further than th^ 

 Borders of the Mineral Kingdom, and 

 have done little more yet than fettled 

 and adjufted Preliminaries; fb very 

 ample is this Kingdom^ fb various and 

 manifold its ProduQ:ions. For the fore- 

 going Conclufions relate only to the^ 

 Origin and Growth of thefe Bodies ; the 

 Natural Hifiory of each farticuUr Me? 

 tall and Mineral, with the Obfervatiom 

 whereon that Hiftory is grounded, be- 

 ing ftill to come. But I mufl: be forced 

 wholly to wave and fuperfede the De-^ 

 tail of thefe ; for I perceive, do what 

 I can, this Abftraft will fwell much I 

 beyond the bounds which I at firft de^j^ 

 figned. 



This Fourth Part will be followed 4 

 by feveral Treattfesj lerving to confirm^il 

 and to illuftrate fbme Paifages in it: | 

 \y hereof I fhall at prelent only mention;^ 

 the four following, 



I . Rules and iSireftions for the Dif^ 



€ovtrj of Mctalls and Mmmis latent ia 



. . , ..... , ^ 



