The manner of preparing.
Allome is to be cast in as it is of it self, without mixing of it, but salt must be mixed with bole, or some other earth, to keep it from melting: with the spirit volatile, there goeth also along an acid spirit, whose vertue is described in the first part. The Oyl of Allome hath almost the like operation with the oyl of vitriol. Also the spirit volatile of both these, is of the same nature and condition with that which is made of vitriol: but common salt, and allome, do not yield so much, as vitriol; unless both, viz. salt and allome be mixed together, and so a spirit distilled of them.
Of the sulphureous volatile spirit of Minerals and Metals, and of their preparation.
Such a penetrative sulphureous spirit may be made also of Minerals and Metals, which in vertue goeth beyond the spirit of vitriol, that of common salt, and that of allome, viz. after the following manner.
The preparation of the volatile spirits of Metals.
Dissolve either Iron or Copper, or Lead or Tin with the acid spirit of vitriol, or of common salt: abstract or draw off the phlegm; then drive the acid spirit again from the Metal, and it will carry along a volatile spirit, which by rectifying must be separated from the corrosive spirit. And such Metallical spirits are more effectual than those that are made of the salts.
The preparation of the volatile spirit of Minerals.
Take of Antimony made into fine pouder, or of golden Marcasite, or of some other sulphureous Mineral, which you please, two parts, mix therewith one part of good purified Salt nitre, and cast in of that mixture a small quantity, and then another, and so forth after the manner above described; and there will come over a spirit which is not inferiour to the former in efficacy and vertue; but it must also be well rectified.
Another way.
Cement what laminated or granulated Metal you please, (except gold) with half as much in weight of common sulphur, closed up in a strong melting pot or crucible, such as doth not let the sulphur go through, for the space of half an hour, until that the sulphur hath penetrated and broken the plates of Metal: Then beat them into powder, mix them with the like quantity in weight of common salt, and so distil it after the way above mentioned, and you will get a volatile spirit of great vertue: and every such spirit is to be used for such special part or member of the Body, as the Metal is proper for, out of which the spirit is made. So silver for the brain; Tinn for the lungs, Lead for the spleen, and so forth.