Dilute it. Only in some early Prim-roses it destroy'd the greatest part of
the Colour, and made the Paper almost White agen. And Madder also afforded
some thing peculiar, and very differing from what we have newly mention'd:
For having gather'd Some Roots of it, and, (whilst they were recent)
express'd upon White Paper the Yellow Juice, an Alcalizate Solution drop'd
upon it did not turn it either Green or White, but Red. And the bruis'd
Madder it self being drench'd with the like Alcalizate Solution, exchang'd
also its Yellowishness for a Redness.

_An admonition touching the four preceding Experiments._

Having thus (_Pyrophilus_) given you divers Instances, to countenance the
General observation deliver'd in the twenty fifth Experiment, and divers
Exceptions whereby it ought to be Limited; I must leave the further Inquiry
into these Matters to your own Industry. For not remembring at present many
of those other Trials, long since made to satisfie my self about
Particulars, and not having now the Opportunity to repeat them, I must
content my Self to have given you the Hint, and the ways of prosecuting the
search your Self; and only declare to you in general, that, As I have made
many Trials, unmention'd in this Treatise, whose Events were agreeable to
those mention'd in the twenty fifth Experiment, so (to name now no other
Instances) what I have try'd with Acid and Sulphureous Salts upon the Pulp
of Juniper Berries, rubb'd upon White Paper, inclines me to think, That
among that vast Multitude, and strange Variety of Plants that adorn the
face of the Earth, perhaps many other Vegetables may be found, on which
such _Menstruums_ may not have such Operations, as upon the Juice of
Violets, Pease-blossoms, &c. no nor upon any of those three other sorts of
Vegetables, that I have taken notice of in the three fore-going
Experiments. It sufficiently appearing ev'n by these, that the effects of a
Salt upon the Juices of particular Vegetables do very much depend upon