Pyritologia: or, A history of the pyrites, the principal body of the mineral kingdom .. . h •, wecannot in that cafe lay, pyrites holds gold : andfhould more than two different parts of pyrites,nay other foreign matters employed, contribute tothe ground-mixtibn of d\ch gold-earth, we mudthe rather adopt the terms, introduction, produc-tion, tranfmutation, &c< and drop that of ft pa-ration. It need not be wondered, that I have dwelt (olong on this queftion, as it includes another-, viz,whether art may not become ajjiflant to nature ? .Andfo far as this laft regards not only a matter of truth
Pyritologia: or, A history of the pyrites, the principal body of the mineral kingdom .. . h •, wecannot in that cafe lay, pyrites holds gold : andfhould more than two different parts of pyrites,nay other foreign matters employed, contribute tothe ground-mixtibn of d\ch gold-earth, we mudthe rather adopt the terms, introduction, produc-tion, tranfmutation, &c< and drop that of ft pa-ration. It need not be wondered, that I have dwelt (olong on this queftion, as it includes another-, viz,whether art may not become ajjiflant to nature ? .Andfo far as this laft regards not only a matter of truth,but of utility too, fo far does the other deferve to be In the Pyrites; 243 be examined into and cleared up. But fliould it atlength appear to be a thing impofiible to enrich oresand ennoble metals, this ufe at lead we may reapfrom it; viz. to learn not to throw away our labourand time to no purpoie: on the other hand, fliouldwe find fome degree of melioration attainable;this would not only encourage us for the prefent,but be an incentive to us for the future to R 2 CHAP. E 244 3 CHAP. XIII. Of the original Particles, or of thePrinciples of the Pyrites. E have hitherto treated of the mixed andcompounded parts of the pyrites > as (i.) itsiron-earth-, (2.) copper-earth; (3.) crude, unme-tallic earth, with which the two firft are ever en-tangled 5 (4.) itsfulphur; (5.)* arfenic, and thefandarach thence procurable ; (6.) the filver; (7.)the gold in the pyrites-y all thefe are to be foundin the pyrites, though not in equal regard orconsideration, fome being effential or conftituentparts, others incidental only, and without whichthe deilruclion of the whole either may, or may notbe effected. The proper ground- parts are an iron-eafth, and fomething that is volatile, and that ei-ther fulphur or arfenic •, all the others, namely,the copper, gold, and filver, are incidental, asthe pyrites is often found to be without them •, butas the proportion of the coppera
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Keywords: ., bookcentury1700, bookdecade1, booksubjectmineralogy, bookyear1757
