A compendious body of chymistry, which will serve as a guide and introduction both for understanding the authors which have treated of the theory of this science in general: and for making the way plain and easie to perform, according to art and method, all operations, which teach the practise of this art, upon animals, vegetables, and minerals, without losing any of the essential vertues contained in them. By N. le Fèbure apothecary in ordinary, and chymical distiller to the King of France, and at present to his Majesty of Great-Britain.

To prepare the Right Magistery of ♄

℞ ℥ ij. of Ceruss, and having made it into very small pow∣der, put the same in a Matrass, pouring upon it ℥ vj. of the spi∣rit of ♂ by little and little, and stir them together that the spirit may reach to the bottom; place the Matrass in B. M. and keep it there warm in digestion the space of 12 hours, then filtrate softly the dissolution, and let the filtration rest one night in a cold place, after which you will finde it coagulated into white Chry∣stals; separate the superfluous liquor, and draw the spirit in Bal∣neo by distillation to a dry bottom, and you shall have in the bot∣tom of your Vessel the Magistery of ♄ dissoluble in all kinds of Liquors, like unto the first which was in Chrystals in respect of its vertue, which you must dry in a slow heat between two papers. This Magistery may be administred in all Diseases, wherein we have said the salt of ♄ to be good and conducible, and we shall finde from it much better and quicker effects, then those we have attributed to the Salt made with vinegar; but the Dosis of it is less: for it sufficeth to give of this Magistery from ij. gr. to xij. Note, that the spirit of Venus which you have made use of in this Ope∣ration, drawn off again by distillation, is good yet for the same ope∣ration, and any other to which it might be employ'd, for it doth not lose of its action or vertue for Physical uses, nor power and efficacy for distillation and extraction of Tinctures.