Volume 2

An essay about the origine & virtues of gems. : Wherein are propos'd and historically illustrated some conjectures about the consistence of the matter of precious stones, and the subjects wherein their chiefest virtues reside. By the Honourable Robert Boyle, Esq; Fellow of the Royal Society.

  • Boyle, Robert, 1627-1691.
Date:
1672
Catalogue details

Licence: Public Domain Mark

Credit: An essay about the origine & virtues of gems. : Wherein are propos'd and historically illustrated some conjectures about the consistence of the matter of precious stones, and the subjects wherein their chiefest virtues reside. By the Honourable Robert Boyle, Esq; Fellow of the Royal Society. Source: Wellcome Collection.

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    eo eee Se ee <a - 7 es ss nk, — —— == SSS eek a ee — ~ als Se — et ae See ee ee —— ata — SS a ee a ee — = — SS SS <— o% Sa eS s = — pee ae Se = eae ee — = 176 «Sn Ellay about the Deigine its Virtue will be fuch as it fhould be for kind, but for degree may be very various, anfwerable to the plenty, pu- rity , fubtlety, &c. of the Mineral that linpregnates it, But if the ftony ‘mat- ter chance to be inbued with fome o- ther fubftance of a. contrary nature, though perhaps the proportion of it may be fo fmall, and the colour of it fuch , as not to make an alteration in the Stone obvious to, fenfe, and great enough to make. it judged to be of an other fpecies 5 yet it,may fo vitiate the matter wherein its expected Quality refides, or check and infringe its ope~ rations, as not.to leave, the Stone any confiderable degree of Virtue. And on the other fide, if it happen that the Mineral Corpufcles; that, are, wont to impart a. certain Virtue to the ftony matter. of one Gem, fhould, by fome lucky hit, befo united with that ofan other fort of Gems ( of which cafe I formerly .gave an Inftance in. green this unufual, Ingredient may be but very {mall, yet, if it’s efficacy be grear, | i it may degree poled toanot And 1 kooy Scholar af a Ce gun: | fo trout the Nos Remedi demy 0 was dit door very fam antlent | about ¢] with ap lence cn being we Upon th FECOvEre( COntiderg