PLUM BAG IN

A crystaiiizable substance, extracted from the root of the Plunbago Europeca. PLUMB AGO, Graphite, Black Lead. This useful substance is a compound of carbon, generally with a minute quantity of iron; there is, however, some doubt as to the nature of the combination. The finest plumbago is from Borrodale in Cumber land. PLUMB-LINE, [s. 953]