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 second Crocus Metallorum, which is though to be that of Rullandus.

THis second preparation doth not differ in the matter, it only differs in the work which is something of longer deduction: for you must take lb ss, of Niter, and melt it in a Crucible, and being melted draw it off from the fire, and try with a small par∣cel of Antimony reduced to powder, if it will not take fire when put upon; and if it happens so, then stay yet a while, for it must not burn to a flame: but as soon as by trial you have found that the mixture may be made without inflaming, pour upon it gently and by little and little lb s. of Antimony made in powder, and mix it well with a Spatula or Slice with the melted Niter, until all the substances be well incorporated; this done, set it on fire with a kindled coal, as you did the other, and you will have the same effect to succeed. This mixture and manner of working is only for this end and reason, that the Niter in fluxion mixes & doth unite it self, and penetrates much better the Antimony, then the Niter cold and in powder, and the conflagration or quick burn∣ing doth carry much better away the impure sulphur of Antimo∣ny, which makes the Crocus Metallorum lesse violent in its o∣peration, since all the ill consequences commonly feared in An∣timony, take their rise from this impure and dangerous Sulphur, to which, though upon slight grounds, are attributed the arsenical and venomous vapours of it.