as we have it in Cakes from the Druggist. Several various Re∣medies usefull in Physick, are by the help of Art extracted out of these Bituminous bodies; as we will more particulary declare in the last Book of the Second part of this Chymical Trea∣tise.
Arsenick is either Natural or Artificial; the natural is of three kindes, Auripigment or Litharge of Gold, so called for its golden colour; Sandarak, which is red; and Realgar, which is yellow: the artificial is prepared by a sublimation of the natural, with Salt.
Antimony is also natural, otherwise called Mineral; and arti∣ficial, which is most frequent in our use, having been melted from the Mineral in Cakes: Of the qualities and choyce of it, its constituting parts, and various kindes, we shall speak more fully hereafter, where we handle the practice upon this Mineral.
Cinnabar is a Mineral body, composed of Sulphur and Mercury, or Brimstone and Quick-silver, coagulated together to a stony hardness. The natural is extracted from Mines, where it is found more or less mixed with Sand; the artificial is made by sublima∣tion of those two substances mixt together.
Cadmy is natural or artificial; the natural is a Metallick Stone, containing in it self the volatile and impute Salt of some Metal; there are very many kindes differing one from the other, in co∣lour, vertue, and consistency: The artificial is found in Furnaces where Metals use to be melted, being nothing else but the Flores or volatile Salt of Metals, sublimated and cleaving to the walls of the Furnace; raising, as the subtilest part of flower doth in Mills, to the roofs of melting houses. There are also of this seve∣ral sorts, as, Pompholyx, Spodium, Tuty.
The other kinde of Marcassites are Mineral Earths, as B••∣lus's, Terra Sigillata of Lemnos, Silesian Clay or Blois in France, Chalk, red Clay, and all other Mineral Earths. To this we might also add, all Artificial Earths, as the several kindes of Lime, made out of feveral sorts of Stones, and containing in them a corroding Salt, and a secret fire.
But before we begin with the Section of Metals, we must re∣move a difficulty which offers it self in this place; and that is, That since Salts are reckoned amongst Metallick Juices, how