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Show Minerals mixed 244 12. ¢. Led.II: Talk will not ftir in the leaft either with Spirit of Nitre, or Oy] of Vitriol. But the Lead-Spar maketh a conftderable Effervefcence with both of them severally. Hence, however this be alfo called Exglifh Talk, yet there is no {mall difference betwixt this, and true Tal, “43. §. Tothefe Stones maybe addedpetrified bodies. As petrified wood 5 which (that upon which I made tryal) no acidflirreth in the leaft. Petrified fhells 5 upon four or fve feveral forts whereof, Oy! ofVitriol being poured, produc eth agreat Effere efcence. The Root or rougher part of the Stone called Gloffopetra, with Spirit of Nitre, makes a con{picnous Bullition. Afteria, the Stone fo called, andfound in fome places in England, mith Oyl of Vitriol, maketh an Effervefcence at the fame degree, $0 doth the Belem- nites, or Thunder-Stone, both the larger and the leffer kinds. So that none of thefe are acid, or vitriolick, but alkalizate Stones. 14. §. Coraline, with Oyl of Vitriol, makes a confpicnows Bullition, yet mild and gentle; that is, with very little, if any heat, and without Led. II. with feveral Menftruums, heretoyou only adda drop or tmo of Water, they prefently boilup with very great vehemency. The Caufe is obfcure; yet it is well known, that Waterit (elf will diffolve Iron: {0 that it appeas, as well by this, as by fome other Experiments, that even incommon Water, as mild e it is, there is fome kind ofcorrofive Principle. ‘ 23. §. Antimony with Spirit of Nitre, and Aqua fortis maketh an Effervefcence 5 Joubbhig'but than thie. Wirt One it the Sani ce as difficulty to be perceived with a Glafi. ence it feemeth to be of a very compounded 5 é it, a fubacid-alkaline Metal. y Seated See my ae ip eal 24. §. <Antimonium Diaphoreticum, with Spirit of Nitre i of Vitriolfeverally, makes a confiderable Bpristdal Wieeee A not an ufelefs Preparation 5 as ftom the Calcination and Ablution ufed therein, fome have thought. 25. §. Bezoardicum Minerale, (that upon which I m any vifible Fumes. And red and white Coral do the like. Hence they are all of a very gentle operation, andfit for Children, as thecafe reuires. : 15. §. Magiftery of Coral (prepared the ordinary way) flirreth not Stirreth not at all either with thee or es in the leaft, either with Alkalies or Acids. Whenceit isevident, Thatits alfo a fair Bullition with Oyl of Vitriol. Anda gentle one with Spirit of Salt. Wherefore, it hath fomething of the nature both of iTOR, Lead, and Copper. aétive Principles are in its preparation deftroyed and wafhed away : that is to fay, It is an elaborate Medicine good for nothing. And thus far of Stones. 16. §. I next come to Metals and Ores. Andfirft for Leads upon which Spirit ofSalt Spirit of Nitre, or Aqua fortis being dropped, #1ftirreth wot in the leaf? with any of them: but with Oyl of Sulphur, and efpecially with Oyl of Vitriol it maketh a flow Bullition andfroth. Hence it {eemeth to be the moft alkalizate Metal. Which isalfo confirmed by a foregoing Experiment upon the Lead-Spar, which maketh a confiderable Effervefcence with any fort of acid. And which likewife, being calcined, yieldeth a good quantity of Lixévial Salt. 17. §. Lead-Ore Stirreth not at all with Aqua fortis or Oil of Vitriol. But Spirit ofsalt makes it bubble,and Spirit of Nitre makes it boil. Hence thereis a confiderable difference betwixt the perfect Metal and the Ore. 18. §. Burnt Lead and red Lead, make avery fall Bullition with Oy! ofVitriol, with Spirit ofNitre a far greater. 19. §. Mercury, with Oylof Vitriol, will not ftir, nor with Oylof Sulphur. But with Spirit of Nitre prefently boyls up. Hence Mercury isa fubacid Metal, Spirit of Nitre being a fubalkaline Acid. 20. §. The filings of Iron or Steel, with Oyl of Vitviol, make a fair Bullition, like that ofMinium. But Spirit of Nitre makes them boil with much celerity. Hence Ironis likewife a fubacid Metal. a1. §. Steel prepared with Sulphur maketh a far lefs Efferuefcence with the fame Spirit of Nitre, than do the filings. Hence there isa great difference in their ftrength. So that ten grains of thefilings unprepared, will go as far as fifteen grains or more of thofe which are prepared, - above-faid. etter, Yet in fome cafes the weaker and milder may be the 22. §. There is one Circumftance in the mixture of Steel and Aqua fortis, which is furprizing 3 and that is this, That flrong Aqua fortis, dropped upon Steel, will not, of it felf, make the least Bullition : but if hereto who make ufé of it, have regard. To Mer arte ; 26. §. Tin, with Spirit of Nitre, makesfo hot and vehement an Effervefcence, that it turns prefently, as it were, intoa Coal, It makes 27. §. The like remarkable circumftance is een in the mix Aqua fortis with Tin, as with Iron, i Tin e Strong divea of themfelves will not Stirs but adda few drops of water to them, e and they a up ae the greateft vehemency. : 28. §. Copper, with Spirit ofSalt, and Oyl of Vitriol feveral q not at all. Spirit z Nitre, and Agua fortis, both ie: it 5 ea, Neither Spirit of Harts-horn,zor Spirit of Salt Armoniac maketh any Bul- lition therewith. But both of them, by a gentle folution, that is, gently Separating its Sulphurfromits Salts, turn it blue. Hence Copper hath : Po proportion of acid than any of the forementioned Meals. 29. §. Silver, neither with Spirit of Salt, nor Oyl of Vitriol Bullition. With Spirit of Nitreit ft one,but tis ne over + Ga continues to diffolve flowly into white Coagulations. It alfo wzaketh with Spirit of Harts-horn, or of Salt Armoniac, a full and deep blue. Hence there is a greater proportion ofacid in Silver, than in Lead, Mercury Tron, Antimony, Tin, or Copper. , 30. §. Litharge of Silver makeththe greate@ Efferuelcence wit of Vitriol. Yet fome with spirit of Nie on oh pe faut £ moniac maketh fome little huff or elevation. And being mixed with Sptrit of Nitre and Spirit of salt Armoniac both together, produceth a faint blue, Hence, although the far greater part of this Litharge be but Lead 5 yet, it feems, it hath fome {mall mixture ofSilver. of Gold {eemeth, for contrary reafons, not to have any Gold. 31. §. But that Gold maketh no Effervefcence with any fungle Salt I know of. But it is commonly diffolved with Aqua Regis, which is known to be a alkaline Liquor. Whence it feemeth, That as Lead is the moft alkalizate, fo Gold the moft acid of Metals, |
