286 Of the Vitriol 



ever it come; nay, both the combination of theft 

 two parts, and their proportion, are the fame in 

 each : but fo far they differ, as this acid fait is de- 

 rived from different quarters, namely, fometimes 

 from fulphur, which in pyrites lies next to the me- 

 tal ; fometimes from the air, being attracted by the 

 defulphurated, nay, repeatedly elixated earth, as 

 by a magnet"; fometimes alfo, without fulphur, it 

 is formed only by the medium of fire, as we ex- 

 perience in that extraordinary body, calamy •, fome- 

 times a prepared vitriol-oii itfelf comes to be incor- 

 porated, in the common manner of folution, with 

 a formal iron. 



From all thefe circumflances to felect only the 

 moil general; vitriol is produced either fponta- 

 neoufly, or by art, and accordingly we have a two- 

 fold fort, a native, and a factitious. But, firft, 

 we are to avoid here the being misled by the term 

 waxing- troughs* ufed in the vitriol-huts, in which 

 troughs, as the workmen fay, the vitriol waxes, or 

 grows ; fince 'tis only a mooting, or cry ftallifation 

 of a vitriol already waxen and generated, only flill 

 contained in a large ^quantity of water, which is to 

 be boiled away. Many alfo imagine grown or na- 

 tive vitriol^ which breaks vein- wife in firm entire 

 rock, fuch as is the Hungarian fort, to have fome- 

 thing extraordinary in it, compared with that ufu- 

 ally formed into icicles, or flakes, in old mine- 

 works, though both are originally derived from 

 diflblved pyrites* and differing in nothing from that 

 generated at the day. 



The feveral appellations, vitriolum coftile, or 

 vulgare, concreticum, ftalattites, ftillatitium^ cup*ro- 

 ja, trichites* leucojon* or rather loncboton, or lance* 

 atum ntophytott) diphryges* magnefm vitriolata, &c, 



do 



