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.

Of the Chymical Preparation of Emerald.

TAke fragments of Emerald the greenest and cleanest you can meet with, beat them to pouder in a steel-Mortar, and searce the pouder through a fine linnen Searcer fitted in a Box, which in

the French shops is called Cicotriner; or it is as good to tritu∣rate them into an impalpable pouder, which put in a Matrass, pour∣ing upon it of the volatile spirit of Urine having yet its phlegm, to draw the colour, and the spirit being sufficiently coloured, draw it off and pour on other until it takes no more colour; then filtrate the Tincture through a Cotten, and put them into a Cucurbite to draw off the Spirit, till you have the bottom in the consistency of an extract, upon which pour very good spirt of Wine; then stop∣ping the Vessel with a Blindhead, lute it, and in the vapour of Balneo put it to extract, digest and circulate untill the spirit be ting'd with a high green, after this draw back again the half or two thirds of the spirit with a slow heat, and you shall have an Elixir or essence of Emerald left, which is a soveraign Remedy against Dysentery and all other kinds of flux of the belly, red and white Courses of Women, Emrods and Hemorrhagy. It is of no less use against all affections of the brain, and passions of the heart, chiefly against swooning, weakness and palpitation; as also Me∣lancholy, Phrensie, Hebetation or weakening of the functions of the Spirits proceeding from some long and perillous disease. For besides this Centrical and luminous Sulphur whence all these noble vertues are derived, there remains besides in this Elixir a certain portion of the volatile salt of Urine, which cleaves to this Sulphur by the help of the spirit of Wine, framing together an essence capable of all these vertues which we have attributed unto it. The Dosis is from ij. drops unto x. in Liquor appropriated to the diseases of the Head, Heart and lower Ventricle.