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Thus we find that not only Crabs-eyes, that are of themselves White, and Pearls that are almost so, but Coral and Minium that are Red, being dissolv'd in Spirit of Vinegar, may be uniformly Præcipitated by Oyl of Tartar into White Powders.
And chiefly, though not only by this way of bringing the Minute parts of Bodies together in such Numbers as to make them become Notorious to the Eye, many of these Colours seem to be Generated which are produc'd by Precipitations, especially by such as are wont to be made with fair Water, as when Resinous Gumms dissolv'd in Spirit of Wine, are let fall again, if the Spirit be Copiously diluted with that weakning Liquor.
Of this you may remember, that I have given you several Instances already, to which may be added such as these, That if Quicksilver be dissolv'd in Aqua fortis, and Præcipitated out of the Solution, either with water impregnated with Sea salt, or with the spirit of that Concrete, it falls to the Bottom in the form of a white powder, whereas if it be Præcipitated with an Alcaly, it will afford a Yellowish or tawny powder, and if there be no Præcipitation made, and the Menstruum be drawn off with a convenient fire, the corroded Mercury will remain in the bottom, in the form of a substance that may be made to appear of differing Colours by differing degrees of Heat; As I remember that lately having purposely abstracted Aqua fortis from some Quicksilver that we had dissolv'd in it, so that there remain'd a white Calx, exposing that to several degrees of Fire, and afterwards to a naked one, we obtain'd some new Colours, and at length the greatest part of the Calx lying at the Bottome of the Vial, and being brought partly to a Deep Yellow, and partly to a Red Colour, the rest appear'd elevated to the upper part and neck of the Vial, some in the form of a Reddish, and some of an Ash-Colour Sublimate.
Brasil. lib 1. in fine. Purchas Pilgrim. Chap. Sect 5. Purchas. Ibid. Purchas Ibid. in fin The way, Pyrophilus, of producing Whiteness by Chymical Præcipitations is very well worth our observing, for thereby Bodyes of very Differing Colours as well as Natures, though dissolv'd in Several Liquors, are all brought into Calces or Powders that are White.
For being sollicitous to find out some ready wayes of discriminating the Tribes of Chymical Salts, I found that all those I thought fit to make Tryal of, would, if they were of a Lixiviate Nature, make with Sublimate dissolv'd in Fair Water an Orange Tawny Precipitate; whereas if they were of an Urinous Nature the Precipitate would be White and Milky.
This, as I said, Pyrophilus, seems to be the Chymical reason of this Experiment, that is such a reason, as, supposing the truth of those Chymical Notions I have elsewhere I hope evinc'd, may give such an account of the Phænomena as Chymical Notions can supply us with; but I both here and elsewhere make use of this way of speaking, to intimate that I am sufficiently aware of the difference betwixt a Chymical Explication of a Phænomenon, and one that is truly Philosophical or Mechanical; as in our present case, I tell you something, when I tell you that the Yellowness of the Mercurial Solution and the Oyl of Tartar is produc'd by the Precipitation occasion'd by the affusion of the latter of those Liquors, and that the destruction of the Colour proceeds from the Dissipation of that Curdl'd matter, whose Texture is destroy'd, and which is dissolv'd into Minute and Invisible particles by the potently Acid Menstruum, which is the reason, why there remains no Sediment in the Bottom, because the infused Oyl takes it up, and resolves it into hidden or invisible Parts, as Water does Salt or Sugar.
To make APRICOCK CHIPS or PEACHES. Take a pound of chips to a pound of sugar, let not your apricocks be too ripe, pare them and cut them into large chips; take three quarters of a pound of fine sugar, strow most of it upon the chips, and let them stand till they be dissolv'd, set them on the fire, and boil them till they are tender and clear, strowing the remainder of the sugar on as they boil, skim them clear, and lay them in glasses or pots single, with some syrrup, cover them with double refin'd sugar, set them in a stove, and when they are crisp on one side turn the other on glasses and parch them, then set them into the stove again; when they are pretty dry, pour them on hair-sieves till they are dry enough to put up.
On this we pour'd fair Water, which it did not Colour Green or Blew, but only seem'd to make a muddy mixture with it, then stopping the Vial wherein the Ingredients were put, we let it stand in a quiet place for some dayes, and after many hours the water having dissolv'd a good part of the imperfectly calcin'd Body, the Vitriolate Corpuscles swiming to and fro in the Liquor, had time by their opportune Occursions to constitute many little Masses of Vitriol, which gave the water they impregnated a fair Vitriolate Colour; and this Liquor being pour'd off, the remaining dirty Powder did in process of time communicate the like Colour, but not so deep, to a second parcel of cleer Water that we pour'd on it.
Or take this: "Jerusalem a handful of ashes blown by the wind, extinct, The Crusaders' streams of shadowy midnight troops sped with the sunrise, Amadis, Tancred, utterly gone, Charlemagne, Roland, Oliver gone, Palmerin, ogre, departed, vanish'd the turrets that Usk from its waters reflected, Arthur vanish'd with all his knights, Merlin and Lancelot and Galahad, all gone, dissolv'd utterly like an exhalation; Pass'd!
COWSLIP WINE another Way. To five gallons of water, put two pecks of cowslip peeps, and thirteen pounds of loaf sugar; boil the sugar and water with the rinds of two lemons, half an hour, and fine it with the whites of two eggs; when it is near cold put in the cowslips, and set on six spoonfuls of new yeast, work it two days, stirring it twice a day; when you squeeze out the peeps to tun it, put in the juice of six lemons, and when it has done working in the vessel, put in the quarter of an ounce of isinglass, dissolv'd in the little of the wine till it is a jelly; add a pint of brandy, bung it close up two months, then bottle it.
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