But (_Pyrophilus_) it may seem somewhat strange to one that has never
consider'd the Compounded nature of Brimstone, That, whereas the Fume of
Sulphur will, as we have said, Whiten the Leaves of Roses; That Liquor,
which is commonly call'd Oyl of Sulphur _per Campanam_, because it is
suppos'd to be made by the Condensation of these Fumes in Glasses shap't
like Bells, into a Liquor, does powerfully heighten the Tincture of Red
Roses, and make it more Red and Vivid, as we have easily tried by putting
some Red-Rose Leaves, that had been long dried, (and so had lost much of
their Colour) into a Vial of fair Water. For a while after the Affusion of
a convenient Quantity of the Liquor we are speaking of, both the Leaves
themselves, and the Water they were Steep'd in, discover'd a very fresh and
lovely Colour.
_EXPERIMENT XXIV._
It may (_Pyrophilus_) somewhat serve to Illustrate, not only the Doctrine
of _Pigments_, and of _Colours_, but divers other Parts of the _Corpuscular
Philosophy_; as that explicates Odours, and many other things, not as the
Schools by Aery Qualities, but by Real, though extremely Minute Bodies; to
examine, how much of a Colourless Liquor, a very small Parcel of a Pigment
may Imbue with a _discernable_ Colour.
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