A course of chymistry. Containing the easiest manner of performing those operations that are in physick. With curious remarks and useful discourses upon each operation / writ in French by Nicholas Lemery ; Translated by Walter Harris.

  • Nicolas Lemery
Date:
1677
Catalogue details

Licence: Public Domain Mark

Credit: A course of chymistry. Containing the easiest manner of performing those operations that are in physick. With curious remarks and useful discourses upon each operation / writ in French by Nicholas Lemery ; Translated by Walter Harris. Source: Wellcome Collection.

    104/390 (page 62)
    , entre. AM CRE Mb SP DPR LIN ie 2 a Deer 4 | ON 3 \ Ne In the making of this: ftratification we begin with a bed of Sulphur, and lay over it a bed of Copper-plates, then another bed of Sulphur; and’ another of Plates. We continue.to do fo till the Crucible is quite full; but you mutt be fure to Jet the firft and laft bed be of Sulphur. This Calcination is thus performed, that the common Sulphur by its burning may cleanfe the Copper Of its fuperficial Sulphur ; but it will become much better purified by the following Opera- tion, Purification of Ci opper.. Take what quantity you pleafe-of Calcined Copper, heat it red-hot in a Crucible between the burning coals, and caft it red-hot into a Pot, wherein you {hall have put enough Oyl of Lin- feed to fwim above it four fingers, cover the Pot prefently, for otherwife the Oyl would take fire, Jet the Copper fteep, till the Oyl is grown pret- ty cool, feparate it, and put it to heat again in the Crucible, then caft it into Oyl of Lin-feed . Oyl for nine feveral times, You mutt change your Oyl every third time ; you’l have a Copper Well purified, and of its former colour, If you Calcine it once again, to confume the Oy], and powder.