make this more intelligible by particular examples; If you dissolve
Copper in _Aqua Fortis_, or Spirit of Nitre, (for I remember not which
I us'd, nor do I think it much Material) You may by Crystalizing the
Solution Obtain a goodly Vitriol; which though by Virtue of the
Composition it have manifestly diverse Qualities, not to be met with
in either of the Ingredients, yet it seems that the Nitrous Spirits,
or at least many of them, may in this Compounded Mass retain their
former Nature; for having for tryal sake Distill'd this Vitrioll
Spirit, there came over store of Red Fumes, which by that Colour, by
their peculiar stinke, and by their Sourness, manifested themselves to
be, Nitrous Spirits; and that the remaining Calx continu'd Copper, I
suppose you'l easily beleeve. But if you dissolve _Minium_, which is
but Lead Powder'd by the Fire, in good Spirit of Vinager, and
Crystalize the Solution, you shall not only have a Saccharine Salt
exceedingly differing from both its Ingredients; but the Union of some
Parts of the _Menstruum_ with some of those of the Metal is so strict,
that the Spirit of Vinager seems to be, as such, destroy'd, since the
Saline Corpuscles have quite lost that acidity, upon whose Account the
Liquor was call'd Spirit of Vinager; nor can any such Acid Parts as
were put to the _Minium_ be Separated by any known way from the
_Saccharum Saturni_ resulting from them both; for not only there is no
Sowrness at all, but an admirable Sweetness to be tasted in the
Concretion; and not only I found not that Spirit of Wine, which
otherwise will immediately hiss when mingl'd with strong Spirit of
Vinager, would hiss being pour'd upon _Saccharum Saturni_, wherein yet
the Acid Salt of Vinager, did it Survive, may seem to be concentrated;
but upon the Distillation of _Saccharum Saturni_ by its Self I found
indeed a Liquor very Penetrant, but not at all Acid, and differing as
well in smell and other Qualities, as in tast, from the Spirit of
Vinager; which likewise seem'd to have left some of its Parts very
firmly united to the _Caput Mortuum_, which though of a Leaden Nature
was in smell, Colour, &c. differing from _Minium_; which brings into
my mind, that though two Powders, the one Blew, and the other Yellow,
may appear a Green mixture, without either of them losing its own
Colour, as a good Microscope has sometimes inform'd me; yet having
mingl'd _Minium_ and _Sal Armoniack_ in a requisite Proportion, and
expos'd them in a Glass Vessel to the Fire, the whole Mass became
White, and the Red Corpuscles were destroy'd; for though the Calcin'd
Lead was separable from the Salt, yet you'l easily beleeve it did not
part from it in the Forme of a Red Powder, such as was the _Minium_,
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