By this mineral fire, all kind of Transmutations of things are
perfected, but particularly it exalteth some of the more base metals
into a higher degree, and makes them more constant, of which more shall
be said in the following Chapters or Treatises.
In the general, some Vegetables, Animal and Mineral subjects, may by
the operation of this Oyl be reduced into fixt Medicines, and indeed
far more commodiously than by the common fire of Wood or Coals.
And moreover which is a far greater thing in this very oyl a fiery
Tincture is hidden, and is manifested by the benefit of Art, as Fryer
_Basilius_, and other Philosophers do affirm.