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 make the vulgar or common Cement.

℞ of Brick dust ℥ iiij. dryed salt ℥ ij. and of dryed and pure Salt-peter ℈ ij, and as much Verdegrease, reduch all to powder each by its self, and mix together to make the vulgar Cementation. But note, that you must ever begin by the powder of Cement to lay the first bed of your stratification, then lay over it a plate of the metal, and thus proceed by alternative beds, until the pot, box or Crucible be full, and order it so that the uppermost lay be also Cement; then cover the Vessel with a very close and exactly well fitted Cover, and lute it with a good Lute not subject to crack, and well dryed before you put it in the fire.