AN ACCOUNT OF THE AETHER, _&c._
This truly extraordinary Chemical Preparation is not a new
Discovery, having been known and esteemed, as a valuable
Curiosity, by many of the greatest Chemists and Philosophers, both
Ancient and Modern; particularly by Sir _Isaac Newton_ [Footnote:
Quere 31st, at the End of his Optics.], and the Honourable
Mr. _Boyle_ [Footnote: Treatise on the Producibleness of Chemical
Principles.], who both mention it in their Works, tho' not by this
Name: And therefore before any Thing is said of it's Virtues as a
Medicine, it may not be improper to explain the Nature of it, and
enumerate a few of it's remarkable Properties, considered as a
Curiosity in Chemistry, in which Light chiefly it has hitherto
been view'd by those who have been acquainted with it.
It is a kind of ETHEREAL OIL, produced by the Decomposition of the
Vinous Spirit by Means of the Vitriolic Acid, and differs
essentially both from Vinous Spirits and Essential Oils in several
Respects, tho' it agrees with them in some, as will appear
hereafter: But as the Vinous Spirit may be decomposed by means of
all the three Mineral Acids, _viz.
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