Note (3) — BOOK V.
James Greive translation
3. Calcined lead. Plumbum combustum.) The process of this is mentioned by Dioscorides under the correspondent Greek name—It was prepared by putting very thin laminæ of lead, with sulphur strewed upon each of them, into an earthen pot, and keeping them on the fire, stirred with an iron rod, till the lead was converted into ashes. It was afterwards rubbed in a mortar, and washed by repeated affusions of water, till no dross swam at top. Dioscorid. lib. cap. 870.