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Show m6 Experiments in diffolving Lea.VIL aaa another of Nitre: which yet is contrary to the Experiment. Andit isthe fame thing, whether we fuppofe the Pores of Water to be alfo different, or not. Becaufe, that if the Figure of all the faid Atomes be the fame; then their refpe& to the Pores of the Water muft be the fame, howdifferent fo ever thofe Pores be: which is alfo contrary to the Experiment. Befides it isa great prefumption, to fay, that the Pores, and therefore the Atomes of Water have different Figures 3 and yet not thofe of Salts, 13. §, From the fame Experiment we may go upon good ground in Compounded Infufions ; whether of Purgative, or other Materials. As not doubting, but that the fame Men/fruumay be highly impregnated with feveral Ingredients at once, whofe operative parts may betherein copioufly diffolved, without hindring either an ExtraGion, or caufing a Precipitation one of another. 14. §. The Second Enquiryis, With what difference this Superimpregnation of Water is made ? which find confiderable. For a Solution of abovefive Drachms of Nétre maybe fuperimpregnated with no lefS quantity of Sal Armoniac. And a Solution offive Drachms of com- mon Salt, maybe fuperimpreguated with as much Nifre. Yet neither a {trong Solution ( as of five Drachms) of commonSa/t,will bear above two Scruples of Sal Armoniac: nor will a {trong Solution (as of five Drachms) of Sal Armoniac, bear above a Drachm of common Sait ; for if above the faid quantities ofeither ofthem be mixed together: they are both copioufly and forthwith precipitated to the bottome of the Ghafs. 15. §. Whence, notwithftanding the former Experiment, yet are we admonithed, not to infufe ‘all manner of Ingredients in any proportion. Becaufe though fome do not, yet others will precipitate one another. 16, §. The Third Enquity was this, Whether the Solution of a {maller quantityof feveral Salts, doth confift with the ~on-ixcreafé of the Bulkof the Water 2 For this I took a Bolthead with a flender Neck, conteining about a pint and a quarter of Waters and diffolved therein about 3) of Nitre. And marking the place to which the Water afcended in the Neck of the Bolthead: 1 then diffolved in the fame Wa- Led. VIL Salts in Water. before. And upon tryal it appears, Firft, that two Ounces of Water will diffolve three Ounces of Loaf-Sygar and no more, except the Water be heated. 19. §. The fame quantity of Water that is, two Ounces will dif folve above two Ouncesof Salt of Tartar. I fay above, for how much more, want of a greater quantity of Sa/t which I could confidein, made methat I could not finifh the Experiment. 20. §. The fame quantity, /c. two Ounces of Water, diffolveth an 22. g. Of Niétre, Five Drachms two Scruples and an half, 23. §. 24. 9. OfSal Armoniac, five Drachms and two Scruples. Of Alum, not above two Drachms and Scruple. a5. §. And of Borax, not above a Drachm andhalf a Scruple. Ounce and a Drachm of Greez Fitriol, 21. §. Thelike quantity diffolveth fix Drachms and a Scruple or above } of an Ounce ofcommonSalt. 26. §. Ofthefe note, That although Common Salt be very difloluble, and will prefently catch the moyfture of the Aer: yet a much greater quantity not only of Salt of Tartar, but even of Loafsugar, and of Green Fitriol it felf, may be diffolved in Water than of Common Salt. 27. §. Again, as the great Solubility of fome, fo the lefS Solubility ofother Salts is alfo obfervable, as of Alum, and Borax. For the fame quantity of Water will diffolve near four times as much ofGreen Vitriol, as it will of Alu, And of Sugar more thanten times as much. Of Green Vitriol near eight times as much as ofBorax 3 and ofSugar, twenty times as much, 28. §. Fromthis Experiment we are likewife cautioned, not only in the Infufion of feveral Ingredients together, but of any onefingly 5 that fuch a proportion thereofto the Men/truuum, be not exceeded. Forall that is over and above whatthe Afen/trunm will bear,is either not extracted, or will be precipitated. As is evident notonly inthe Di//olution of the Salts above named, but in the Infuftox of Plants themfelves: as, for inftances of Seva; two Drachms whereof will impregnate four Ounces of Water as {trongly,asif twice the quantity were infufed 5 becaufe the Water willbear no more of the Purgative Parts of that ter about a Drachm ofSal Gemma: which little quantity raifed the Water above halfan Inch higher then it was before. The like I obferved in the addition of Nitre to a Solution of Sal Armoniae. So that to fuppofe the variation of the sa/t doth prevent the increafe of the Bulk Body. of the Water, is a manifeft Error. 17. §. Fromthe fame Experimentit alfo appears, That the afcent Tacchamahacca, and fome others will do. For if two Drachms, fuppote of thefe Cry/fals, of Tartar (commonly fold for Cremor TartarzJ be put to one Ounce of Water, {carce five Grains thereof will, by Agi« of the Water upon a Superimpregnation, is the fame, by whatfoever Salt the firft Impregnation be made. For inftance, Let a Solution of Nire afcend in the Neck of the Bolthead, fuppofe, to 10 Inches, then add + an Ounce more of Nitre, fo as to raife the Water, fuppofe, 12 Inches or more, or lefs, according to the Bore of the Neck, In like manner, let a Solution of Sal Armoniac reach to ten Inches: then add again half a Onnse of Nitre 5 andit will reach juft 12 Inches, or more or lefs, as Derore, 18. §. The Fourth Enquiry is, What quantity of the feveral kinds of salt, may be diffolved feverally in the fame quantity of Water : that is tofay, byagitation alone, without the help of fire, as I noted before. EA §. There is only one Sait more reniaineth to be fpoken ofun- der this Experiment 3 and that is, the Cry/fals of Tartar. Whereof; it is fomewhatftrange to obferve, that it will {carce at all diffolve in Water : not more, than even divers Refizows Gims, as Maftich, Tolu, tation, be therein diflolved. ’ |