The method of chemical philosophie and physick. Being a brief introduction to the one, and a true discovery of the other. namely, of diseases, their qualities, causes, symptoms, and certain cures. The like never before extant in English.

The said Silver of Mercury is thus prepared.

℞ Quicksilver very well purged with Salt and Vine∣gar, dissolve it in a well rectified Aqua fortis, let it settle and the Quicksilver will fall to the bottom in Crystals, which grind well with oil of the Salt of Tartar (made per deliquium) then wash away the oil and all sharpness from it; then put thereon pure distilled Vinegar, and let it stand in gentle heat until the Quicksilver swim on the top of the Vinegar like leaves of Silver; which take off carefully by decanting the Vinegar (with that which

swimmeth on the top of it) from what remains in the bottom, filter the decanted Vinegar through a brown paper, and the Silver leaves of Mercury will remain in the paper; then put the siltred Vinegar upon the other part of the Quicksilver which remained in the bottom (if there be not enough of the Vinegar, add some more fresh to it) and proceed as before, so do till you have all (or most) of your Quicksilver in Silver leaves; and so is your Silver Mercury prepared.