The Sceptical Chymist: or Chymico-Physical Doubts & Paradoxes, Touching the Spagyrist's Principles Commonly call'd Hypostatical; As they are wont to be Propos'd and Defended by the Generality of Alchymists. Whereunto is præmis'd Part of another Discourse relating to the same Subject.Boyle, Robert
Philosophy
The Sceptical Chymist: or Chymico-Physical Doubts & Paradoxes, Touching the Spagyrist's Principles Commonly call'd Hypostatical; As they are wont to be Propos'd and Defended by the Generality of Alchymists. Whereunto is præmis'd Part of another Discourse relating to the same Subject.
Boyle, Robert
Chemistry -- Early works to 1800
And first, one sort of Opposers will be forward to tell me, That they
do not pretend by Fire alone to separate out of all compound Bodies
their _Hypostatical_ Principles; it being sufficient that the Fire
divides them into such, though afterwards they employ other Bodies to
collect the similar parts of the Compound; as 'tis known, that though
they make use of water to collect the Saline parts of Ashes from the
Terrestrial wherewith they are blended, yet it is the Fire only that
Incinerates Bodies, and reduces the fix'd part of them into the Salt
and Earth, whereof Ashes are made up. This Objection is not, I
confess, inconsiderable, and I might in great part allow of it,
without granting it to make against me, if I would content my self to
answer, that it is not against those that make it that I have been
disputing, but against those Vulgar Chymists, who themselves believe,
and would fain make others do so, That the Fire is not only an
universal, but an adaequate [Transcriber's Note: adequate] and
sufficient Instrument to analyze mixt Bodies with. For as to their
Practice of Extracting the fix'd Salt out of Ashes by the Affusion of
Water, 'tis obvious to alleadge, that the Water does only assemble
together the Salt the Fire had before divided from the Earth: as a
Sieve does not further break the Corn, but only bring together into
two distinct heaps the Flour and the Bran, whose Corpuscles before lay
promiscuously blended together in the Meal. This I say I might
alleadge, and thereby exempt my self from the need of taking any
farther notice of the propos'd Objection. But not to lose the Rise it
may afford me of Illustrating the matter under Consideration, I am
content briefly to consider it, as far forth as my present
Disquisition may be concern'd in it.
Not to repeat then what has been already answer'd, I say farther, that
though I am so civil an Adversary, that I will allow the Chymists,
after the Fire has done all its work, the use of fair Water to make
their Extractions with, in such cases wherein the Water does not
cooperate with the Fire to make the _Analysis_; yet since I Grant
this but upon Supposition that the Water does only wash off the Saline
Particles, which the Fire Alone has Before Extricated in the Analyz'd
Body, it will not be Reasonable, that this Concession should Extend to
other Liquors that may Add to what they Dissolve, nor so much as to
other Cases than those Newly Mentioned: Which Limitation I Desire You
would be Pleas'd to Bear in Mind till I shall Anon have Occasion to
make Use of it. And This being thus Premis'd, I shall Proceed to
Observe,
First, That Many of the Instances I Propos'd in the Preceding
Discourse are Such, that the Objection we are Considering will not at
all Reach Them. For Fire can no more with the Assistance of Water than
without it Separate any of the Three Principles, either from Gold,
Silver, Mercury, or some Others of the Concretes named Above.
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