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Show 5-1 Tmnflmrent and Denfl' ‘Bor/ier. Chap. I, Chap. 1. 0f ‘Tmnflmrent and Oparc Border. 15 r And Jewels, as to their Origen and Nature, were firl't of all'Fluid Bodies mi in Solutir (Principiir, and afterward concreted into more fine {olid Subliances, :, , ' enetrals of ellucid Subliances 3 whereupon it's remarka- bl: illih‘fatlhle iiiofl bright regercuflions of Light, take their rife from the in» "15} by vertue of faline Particles, (booting themfelves into great variety of Shapes mid Compage of Tranfparent Bodies, and that the Beams are hrlt received into their Etirface, and then inlmuated into their interior parts, till at lafl puffing through the molt remote Surface, did afterward fulfermofi vivid rec ' and Sifes , which are infiruments of great Pleafure and Admiration to thofe . inquifitive Perfons, that are ambitious to pry into the Wonders of Nature, t; tag?" dircovercd by Experimental Philofophy; of Wthh Learned and Honourable 3412"" . . . . Mr. Bails is a great Mafier. About Oyarries feated near Springs, havmgfomewhat of a petrifying qua- lierfl ions of Light from the neighbouring furface of Air. So that more numerous Rays were reconvcyed to the Eye, by the futfaccs at [all pining; m‘ Chril‘rals, or Diamonds, in which they were t‘NlCClnflCaCd, as admit- through :er prolrre lU|'« fine Ilrrl bop ruw molt i'lvii rrfl min: (i lity, may be feen rough and Vopace Stones, whichbeing broken, within their riiw a double refraétion after their incidence in each Surface, whereupon they wombs may be oftentimes difcerned fome rare Liquor concreted, into fome finer fubftance ', and frequently in outwardly folid Stones, may be dilcovered in their inward Recefles, large Cavities all befet with beautiful Concreti- gained a greater brightnefs of the Chrifial, or Diamond, Without any re» ons, refembling Tranfparent Clirifials, adorned with diflerent Figures and Magnitudes , which feem to proceed from fome thin petrifying Liquor ( percolated through the Compage, of which the Stone. was formed ) landing at thofe Cavities, framing the inward Becefljes of this Maffy Stone, and the iiioifter parts of this fine lapedefent JUICE being exhaled, it took the ad- vantage to {hoot into thofe curious Chrifials,which did encircle the Cavities in numerous clulters. fraction 3 as inoftingenious Mr Hook hath truly obferved. And the truth of this Hypothefis may be farther eVinced, that the more bright refleftions of Light arife from the more condenfed parts of Air, producediby the efl'luvia of Vegetables,Minerals,and the like ,I may be experimented by putting the lower furface of Chrifials, Diamonds, into fame Tranfparent Liquor, which intercepteth the approach of any Air, and then the refleétion growerh f0 faint, that it could fcarce be difcovered : And another way may be tried by clapping on a folid body,as the Hand to the lower furface of Chri» flals, wherein it is defpoil'd of Air, when the Hand preffeth hard upon the And this Hypotlielis may receive a farther Confirmation, not only from Tranfparent Body, and then the reflefiions do almolt difappear, and 1f the another in the External Figuration, but the inward texture of thefe Gems, which do \ hm," not only refemble one another in outward Forms, but in the Interior Con- umi cretions 5 as it hath been feen in a great Lump made up of an aggregate body Hand be fomewhar loofened from the lower furfaceof pelliiCid Subfiances, :‘iiirniiiiiihrig of nany loft Cliriltals, which feemed originally to be many fine liquid Par- the Air lodged in the creafes of the Hand, doth prelent us With lively reflea ' is of Li yht as before. aKXnd furtliermore, the lower furface of the Tranfparent Bodies, being im- §2§$§°§f§fiy ticles, liafiily coagulated in a Clift or‘CaVity, modelling them into fuch Fi(of: Chmld‘i gures, as were fuitable to the Mould into which they were calt : And it hath been alfo obferved, that their inward Coalitions, have been framed of one merfed into pure mlick-filver, the clear repercullions of Light grow more firong than thefe arifing from Air, or Water, and the reafon ( as [apprea liend ) may be this: Becaufe Quick-filver doth offer greater refifiance to the Gum do not xrr'tmhleoue uniform Modely very agreeable to the outward; as is very confpicuous in common Salt, originally a Fluid Body, integrated of numerous Saline Parti- cles tdiflolved in Water) which being Concreted, are dreITed with one Gmsrmg 3:313:33" Shape, and may by yuxta pojitiort toalefce, into one Lump. The fame account may be given of Gems, as Diamonds, Rubies, Saphires, and thelike, which were in their tirlt fubl'tances Tranfparent liquid Bodies; 2;;ligsé‘gynrec‘ becaufe it is not probable that folid concreted Subfiances, that were never coin, gcliulct Fluid, fliould participate of Tranfparency. Which I conceive, proceed minimum, from the loofe compage of Liquid Bodies, befet with various Minute erh Pores, "WWW ranked in fuch order, with miiuy as it meeteth every way to receive the fubtle Particles of Light, which fo difpofe the Fluid Subltances 5 that When they are Concreted into folid Bodies, they retain the fame paflages made in them by the beams of Light, during their primitive confiitution of Tranlparent Subflauccs ; whofelul‘tre doth not only proceed from refraétions of Luc id parts, nutrirocccd firft Incident to the furface, next to the Eye, fiomtel'rafiliv and then Putting forward on of lucid _ through the open compage of Pelluci d Bodies, but alfo from the lively ReI "C 3‘ bailiff. "rrrt'ir [th "‘"V‘L‘gm' diii‘iiiiginrio pflrghfiffiylo fleé‘tions (made, as Iconceive, from fome opace parts accompanying a 1,2,21,23,53," Tranfparent fubfiance) firft penetrating the furface dil‘tant from the Eye, Wright? i'tnt, 3nd afterward darted through the more Inward receffes of Tranfp arent Bo[ES This Hypothefis may be confirmed by Chriltal, and Cornil' h, or true Dia- monds, whofe vivid repercuflions of Light, are not only fporting up and down from the various polilhed angles of cut Diamonds (borrowed from the plain eXtemal furfaces of thefe well polilhed and finely fliaped Bodies) but alfo from the refleétion of Beams, reconVeyed from an oppofite furface through the The bright repercmlions or Light in Franl'pareut Burheurc Hill retcivrd into that (who; and [heuinfimated into» their ruuaid parts, till motion of Light, than either Air or Water; whereupon (Auck-filver giveth more bright refleétions, by making returns of more numerous Rays than Air or Water, into the fubfiances of Tranfparent Bodies. . And it may be worth our notice, how Diaphanous Bodies embelilhed with fine Geometrical Figures, are made up of many thin Lamime, or Plates, one feared within another, which in their firf't origen, are f0 many thin Accretions chiefly framed of Saline Particles, imparting to Tranfparent Subflances, a power to coagulate by (booting themfelves oftentimes into divers fine Plates, To clofely adheering to each other, that they feem to confiitute one uniform nee. bubftlilis rare texture of Pellucid Bodies, compofed of many thin Pliifical Plains, may be difcovered by a curious furvey of their Edges, which are placed one under another in unequal dif‘tances, that they. feem to ,refemble To many fmall Steps, lying one above another, not unlike the Leaves of a Book a little opened ', this is obfervable in the compage of divers Tranfpa~ rent Minerals, and in fome kinds of Talk, and in divers Gems, whofe curious Fabrick (though commonly reputed to be one entire Subfiance) is fitted up of many thin Accretions, fo admirably fet together, With ('0 exaét a clofenefs, that it cannot be difcerned, but by a curious Eye, where thofe Tranfparent Jewels have fome fine edges unequallyrerminating {them; or when they are broken, fome of thefe Flakes, integrating the body of Gems, do fcale elf. by reafon of the clofe juxtapofion of their thin Accretions, is loofened, and (battered, in the violent agitation of their parts. Another G; ring unfau: of Air.‘ Diaphanous Bodies are made up or' many tlun L:~' minaz, or l'laits. The rare texture of Tranfparent Bo- dies framed of Phifical plainS. may be difcovcrcd by their edges placed unJcr each o« ther in unc- qual diltanrcs: |