made in Fair Water, and finding upon the Affusion and shaking of this New
liquor, that the Blewness formerly conspicuous in our Tincture does
presently vanish, I am thereby incited to suppose, that the Salt
Prædominant in Allom belongs to the Family of Sour Salts; but if on the
other side I have a mind to examine whether or no I rightly conceive that
Salt of Urine, or of Harts-horn is rather of a Saline Sulphureous (if I may
so speak) than of an Acid Nature, I drop a little of the Saline Spirit of
either into the Nephritick Tincture, and finding that the Cæruleous Colour
is rather thereby Deepned than Destroy'd, I collect that the Salts, which
constitute these Spirits, are rather Sulphureous than Acid. And to satisfie
my self yet farther in this particular, I take a small Vial of fresh
Tincture, and placing both it and my self in reference to the Light as
formerly, I drop into the Infusion just as much Distill'd Vinegar, or other
Acid liquor as will serve to Deprive it of its Blewness (which a few drops,
if the Sour Liquor be strong, and the Vial small will suffice to do) then
without changing my Posture, I drop and shake into the same Vial a small
proportion of Spirit of Hartshorn or Urine, and finding that upon this
affusion, the Tincture immediately recovers its Cæruleous Colour, I am
thereby confirm'd firm'd in my former Opinion, of the Sulphureous Nature of
these Salts. And so, whereas it is much doubted by Some Modern Chymists to
what sort of Salt, that which is Prædominant in Quick-lime belongs, we have
been perswaded to referr it rather to Lixiviate than Acid Salts, by having
observ'd, that though an Evaporated Infusion of it will scarce yield such a
Salt, as Ashes and other Alcalizate Bodyes are wont to do, yet if we
deprive our Nephritick Tincture of its Blewness by just so much Distill'd
Vinegar as is requisite to make that Colour Vanish, the _Lixivium_ of
Quick-lime will immediately upon its Affusion recall the Banished Colour;
but not so Powerfully as either of the Sulphureous Liquors formerly
mention'd. And therefore I allow my self to guess at the _Strength_ of the
Liquors examin'd by this Experiment, by the _Quantity_ of them which is