How it will succeed
in many other Vegetable Juices, and Infusions of the same Colour, I have at
present so few at hand, that I must leave you to find it out your self. But
as for the Operation of the other sorts of Salts upon these Red Substances,
I found it not very Uniform, some Red, or Reddish Infusions, as of Roses,
being turn'd thereby into a dirty Colour, but yet inclining to Green. Nor
was the Syrrup of Clove-july-flowers turn'd by the solution of Pot-ashes to
a much better, though somewhat a Greener, Colour. Another sort of Red
Infusions was by an _Alcaly_ not turn'd into a Green, but advanc'd into a
Crimson, as I shall have occasion to note ere long. But there were other
sorts, as particularly the lovely Colour'd juice of Buckthorn Berries, that
readily pass'd into a lovely Green.
_EXPERIMENT XXVII._
Among other Vegetables, which we thought likely to afford Exceptions to the
General Observation about the differing Changes of Colours produc'd by Acid
and Sulphureous Salts, we thought fit to make Trial upon the Flowers of
_Jasmin_, they being both White as to Colour, and esteem'd to be of a more
Oyly nature than other Flowers. Whereupon having taken the White parts only
of the Flowers, and rubb'd them somewhat hard with my Finger upon a piece
of clean Paper, it appear'd very little Discolour'd.
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