he vanity of _Virga Divinatoria_, p. 181.

A peculiar way of washing out very small _Dust-gold_, p. 198.

Of some extraordinary big pieces of perfect _Natural_ Gold and Silver, p.
203.

Of a very rare Mineral, sent to the Author out of the _Hungarian_ Mines,
which had pure Silver branching out into Filaments, and some splendid
yellow parts, which was pure Gold, and some dark parts, which was Silver
mixed with Gold, 189.

_Salt_ the _Basis_ of all Natural Productions, and the admirable variety of
Salts, p. 299.

Strange Figures of _Plants_, p. 348.

The way of producing _Plants_; p. 414.

In how much time a Swallow can fly about the World, p. 411, &c.

This may suffice, to give occasion to the Searchers of Nature, to examine
this Book, and the Observations and Experiments contained therein, together
with the Ratiocinations raised thereupon, and to make severer and more
minute Inquiries and Discussions of all.

* * * * *

_A farther account of an Observation above-mentioned, about _White Blood_._

Since the Printing of the former Sheet, there is this farther account from
the same hand.

Mr. _Boyle_,

I have at length, according to your desire, received from the Ingenious Dr.
_Lower_, an account in writing of the Observation about _Chyle_ found in
the Blood; which though you may think strange, agrees well with some
Experiments of his and mine, not now to be mentioned. The Relation, though
short, comprizing the main Particulats of what he had more fully told me in
Discourse, I shall give it you with little or no variation from his own
words. {118}

A Maid, after eating a good Break-fast, about seven in the Morning, was let
Blood about eleven the same day in her Foot; the first Blood was receiv'd
in a Porringer, and within a little while it turn'd very white; the last
Blood was received in a Sawcer, which turn'd white immediately, like the
white of a Custard. Within five or six hours after, he (the Physitian)
chanced to see both, and that in the Porringer was half Blood and half
Chyle, swimming upon it like a Serum as white as Milk, and that in the
Sawcer all Chyle without the least appearance of a drop of Blood; and when
he heated them distinctly over a gentle fire, they both harden'd: As the
white of an Egge when 'tis heated, or just as the _Serum_ of Blood doth
with heating, but far more white. This Maid was then in good health, and
only let Blood because she never had her C