except they receive a clear and manifest sulphur: for the smoak of sulphur will not black a paper, and is commonly used by women to whiten Tiffinies, which it performeth by an acide vitriolous, and penetrating spirit ascending from it, by reason whereof it is not apt to kindle any thing nor will it easily light a Candle, untill that spirit be spent, and the flame approacheth the match. This is that acide and piercing spirit which with such activity and compunction invadeth the brains and nostrils of those that receive it. And thus when _Bellonius_ affirmeth that Charcoals made out of the wood of Oxycedar are white, Dr. _Jordan_ in his judicious Discourse of mineral waters yeeldeth the reason, because their vapors are rather sulphureous then of any other combustible substance. So we see that _Tinby_ coals will not black linnen being hanged in the smoak thereof, but rather whiten it, by reason of the drying and penetrating quality of sulphur, which will make Red roses white. And therefore to conceive a general blackness in Hell, and yet therein the pure and refined flames of sulphur, is no Philosophical conception, nor will it well consist with the real effects of its nature. These are the advenient and artificial wayes of denigration, answerably whereto may be the natural progress. These are the wayes whereby culinary and common fires do operate, and correspondent hereunto may be the effects of fire elemental. So may Bitumen, Coals, Jet, Black-lead, and divers mineral earths become black; being either fuliginous concretions in the earth, or suffering a scorch from denigrating Principles in their formation. So men and other animals receive different tinctures from constitution and complexional efflorescences, and descend still lower, as they partake of the fuliginous and denigrating humour. And so may the _Æthiopians_ or _Negroes_ become coal-black, from fuliginous efflorescences and complexional tinctures arising from such probabilities, as we have declared before.