dder 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
their particular Textures.

_EXPERIMENT XXIX._

It may be of some Use towards the discovery of the nature of these Changes,
which the Alimental Juice receives in some Vegetables, according to the
differing degrees of their Maturity, and according to the differing kinds
of Plants of the same Denomination, to observe what Operation Acid,
Urinous, and Alcalizate Salts will have upon the Juices of the several
sorts of the Vegetable substances I have been mentioning.

To declare my meaning by an Example, I took from the same Cluster, one
Blackberry full Ripe, and another that had not yet gone beyond a Redness,
and rubbing apiece of white Paper, with the former, I observ'd, that the
Juice adhering to it was of adark Reddish Colour, full of little Black
Specks; and that this Juice by a drop of a strong _Lixivium_, was
immediately turn'd into a Greenish Colour deep enough, by as much Urinous
Spirit into a