Secondly, The Green thus made being (if I may so speak) Mechanically
produc'd, there is no pretence to derive it from I know not what
incomprehensible Substantial Form, from which yet many would have us
believe that Colours must flow; Nor does this Green, though a Real and
Permanent, not a Phantastical and Vanid Colour, seem to be such an Inherent
Quality as they would have it, since not only each part of the Mixture
remains unalter'd in Colour, and consequently of a differing Colour from
the Heap they Compose, but if the Eye be assisted by a _Microscope_ to
discern things better and more distinctly than before it could, it sees not
a Green Body, but a Heap of Blew and Yellow Corpuscles.
And in the third place, I demand what either Sulphur, or Salt, or Mercury
has to do in the Production of this Green; For neither the Bise nor the
Orpiment were indu'd with that Colour before, and the bare Juxtaposition of
the Corpuscles of the two Powders that work not upon each other, but might
if we had convenient Instruments be separated, unalter'd, cannot with any
probability be imagin'd either to Increase or Diminish any of the three
Hypostatical Principles, (to which of them soever the _Chymists_ are
pleas'd to ascribe Colours) nor does there here Intervene so much as Heat
to afford them any colour to pretend, that at least there is made an
Extraversion (as the _Helmontians_ speak) of the Sulphur or of any of the
two other supposed Principles; But upon this Experiment we have already
Reflected enough, if not more than enough for once.
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