A fine soot formed by burning resin, petroleum, pitch, tar, and oils and fats in close iron vessels. During combustion the dense smoke passes into a chamber covered with a coarse woolen cloth, and a thick coating of lampblack is soon formed, which is shaken off and put up in barrels for sale. Lampblack is used by artists and painters, and is the chief ingredient in China ink and printing ink.

LACK.

LACK.