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.

The essential and stomachical spirit of Salt.

℞ Of purified and very dry salt, calcinated in open fire in a Cru∣cible to whitenesse; put it in a Matrass and imbibe it with oyle of salt, which is the last spirit remaining in the rectification in the bottom of the Cucurbite; make the imbibition by little and little, stirring the Vessel until the mixture be reduced into a clear pap, lute the Matrass with a Blindhead, and put it to digest in ashes in a moderate and equal heat, until the oyle of salt be well united with the calcined and desiccated salt; then begin again the imbibition, digestion, union and extraction so often, that the salt refuses to receive any more of, and be satiated with this Oyle, which must swim above it without penetrating; but the true con∣cluding signe that this salt will be ready fitted for distillation, is the turning of its colour into a fair golden yellow colour, and having contracted a pleasing and a sweet smell, which when it hath, put it in a Retort, and distil in a well graduated fire, and there will come out a very white smoak and clouds, which by degrees shall turn into Liquor; the distillation being ended, rectifie this spirit in B. M. to separate the phlegm thereof, and you shall have an essential and stomachical spirit of Salt, with which none is to be compared in Physick, to stop in a moment and as it were miraculously all fits of vomiting in any accident or Disease whatsoever. Some are of opinion, that this Spirit is capable to extract and-draw the Tincture of Gold to it self, without a full dissolution or disunion of the whole body. The Dosis is from j, to iv. drops in some Broth, or a spoonfull of syrup of Pomgranates, or rind of Oranges, or in a little Wine.