And by this means, to tell you that
upon the by, I have been able to discover, that there may be made Bodies,
which though they run _per Deliquium_, as readily as Salt of Tartar, belong
in other respects, not to the family of Alcaliz, much less to that of
Salfuginous, or that of Acid Salts. Perhaps too, I may know a way of making
a highly operative Saline Body that shall neither change the Colour of
Syrrup of Violets, nor Precipitate the Solution of Sublimate; And, I can
likewise if I please conceal by what Liquors I perform such changes of
Colour, as I have been mentioning to you, by quite altering the Texture of
some ordinary Chymical productions, the Exploration of which is the main
use of the fortieth Experiment, which I think teaches not a little, if it
teach us to discover the nature of those things (in reference to Salt) that
are obtain'd by the ordinary Chymical Analysis of mix'd Bodyes, though
perhaps there may be other Bodyes prepar'd by Chymistry which may have the
same Effects in the change of Colours; and yet be produc'd not from what
Chymists call the Resolution of Bodies, but from their Composition. But the
discoursing of things of this nature is more proper for another place.
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