Pharmacopœia Londinensis, or, The London dispensatory further adorned by the studies and collections of the Fellows, now living of the said colledg ... / by Nich. Culpeper, Gent.

Mercurius Sublimatus Corrosivus. P. 197. in Lat. B. Mercury Sublimate Corrosiye.

Take of Vitriol purified by Solution, Filtration, and Coagulation, and calcined till it be yellow one pound, Bay Salt in like manner 〈◊〉〈◊〉 and dried, 〈◊〉〈◊〉 in like 〈◊〉〈◊〉 purified, of each half a 〈◊〉〈◊〉, crude Mer∣cury clensed by straining through a 〈◊〉〈◊〉, one pound, bruise them all in a wooden mortar, with a wooden Pestle, till the Salis are in pouder, and no bits of the Mercury are seen, which will be best 〈◊〉〈◊〉 if you do it at divers times; as for example sake, taking Vi∣triol and Mercury, of each one ounce, Salt and Nyter, of each half an ounce at a time, and so forth, till the whole matter be brought into a pouder and mixt, then put this matter into a glass body, so capacious that it fill not above the one half of it, place the glass a little above the middle in Sand, in a conveniint Furnace, give fire to it by degrees, even to the height, twelve or sixteen hours being passed, the sublimated Mercury wil stick to the top of the glass, which being seperated and bruised, sublimate by it sels the second and third time, and oftener if it be too impure, till it be as white as snow, and no dross mixed with it.