White precipitat, in Latin, Mercurius prae∣cipitatus albus.
Dissolve in a glass Cucurbit sixteen ounces of Mercury revived from Cinnabar, with eighteen or twenty ounces of Spirit of Nitre; when the disso∣lution is made, pour upon it salt water filtrated, made of ten ounces of Sea salt, in two quarts of water, add to this about half an ounce of the vola∣tile Spirit of Sal Armoniack, there will precipitate 〈◊〉〈◊〉 very white powder, that you must leave for a suffi∣cient time to settle, then having poured off the wa∣ter by inclination, wash i•• several times with Foun∣tain water, and dry it in the shade.
〈◊〉〈◊〉 It is used to raise a flux with, and to ••ure tettars and the itch.
Dose. It may be given inwardly from four to fif∣teen grains in Pills; when it is used outwardly, a dram or two drms of it may be mixed with an ounce of Pomatum.