in Rohault's Tract. Physic. pt. II. c
27.

[68] By aspect is to be understood an angle formed by the rays of two
planets meeting on the earth, able to execute some natural power or
influence.

[69] Those who wish to read a curious monument of the follies of the
alchymists, may consult the diary of Elias Ashmole, who is rather the
historian of this vain science, than an adept. It may amuse literary
leisure to turn over his quarto volume, in which he has collected the
works of several English alchymists, to which he has subjoined his
commentary. It affords curious specimens of Rosicrucian mysteries; and
he relates stories, which vie for the miraculous, with the wildest
fancies of Arabian invention.

[70] Alcahest, in chemistry, (an obsolete term,) means a most pure and
universal menstruum or dissolvent, with which some chemists have
pretended to resolve all bodies into their first elements, and perform
other extraordinary and unaccountable operations.

[71] In this writer we find the following passage: "Such as are skilled
in the ways of nature, can take; silver and tin, and changing their
nature, can turn them into gold." He also tells us that he was "wont to
call himself a _gold-melter_ and a _chemist_."

[72] The principal Authors on alchymy are Geber, the Arab, Friar Bacon,
Sully, John and Isaac Hallendus, Basil Valentine, Paracelsus, Van
Zuchter, and Sendirogius.

[73] Corringius calls this statement in question, and asks how Suidas,
who lived but five hundred yours between them, should know what happened
eight hundred years before him? To which Borrichius the Dane, answers,
that he had learnt it of Eudemus, Helladius, Zozimus, Pamphilius, and
others, as Suidas himself relates.

[74] It does not appear that the Egyptians transmuted gold; they had
ways of separating it from all kinds of bodies, from the very mud of the
Nile, and stones of all kinds: but, adds Kercher, these secrets were
never written down, or made public, but confined to the royal family,
and handed down traditionally from father to son.

CHAPTER IX.

ALCHYMICAL AND ASTROLOGICAL CHIMERA.

Having so far explained the fragile basis on which human knowledge may
be said to have depended, during the obscurity and barbarity of the
middle ages, when the progress of true knowledge was obstructed by the
most absurd fancies, and puerile conceits: when conjectures, caprices,
and dreams supplied the place of the most useful sciences, and of t