226 Of the Go & D 



77'/*/ ; a defulphurated pyrites, and an exhaufted rj- 

 put mortuum, never yieldingij-any vitriol. 



Fire, which confifts in the quickeft degree of 

 motion and incalefcence of inflammable, fatty par- 

 ticles, imparts to the mixtion, partly from its own 

 matter, partly from the flame of coals, wood, &c. 

 applied externally, or from both together, fome- 

 rhing elTentiai and material, that either before was 

 not at all, or not in fuch mixtion and form therein; 

 as appears from an incinerated regulus of antimony, 

 which proves heavier than it was before fuch inci- 

 neration •, and from all the transformations of bo- 

 dies containing any thing inflammable, which by 

 the external fire is ever made the object of its own 

 rage. 



In all thefe difiblutions, new forms, or new pro- 

 ductions, frequently occur, where feparations are 

 feldom feen •, yet where deftructions happen per fe, 

 and are purely the effects of air and fire, without 

 any thing befides, there we may rather expect fepa- 

 rations, and that in mineral bodies : and if we would 

 proceed accurately, the feparations are to be veri- 

 fied by compofitions. I fpeak of mineral bodies, 

 and thofe both compounds and decompounds -, for, 

 animal and vegetable bodies eafily and certainly 

 enough feparate into their original earth and water, 

 out of which they grew : and mix is 9 nay, often 

 compounds, are of a nature, that the former bear not 

 reparation at all, the latter, not without fome diffi- 

 culty. In feparations the parts of the body are al- 

 ready formally in it, what is otherwife produced, 

 potentially only. Of the fire it is commonly faid, 

 that it is unfit for feparations, as framing new mix- 

 tions only -, that the fire is a deftroyer^ not an ana- 

 lyfer ; that the air, on the contrary, is a better fe- 



parator 



