A Dictionary of Arts, Manufactures and Mines

part is then to be poured off into a similar vessel. This process may be

repeated twice or thrice, to obtain a very good bistre. At last the settled deposit is sufficiently fine, and, when freed from its supernatant water, it is mixed with gum-water, moulded into proper cakes, and dried. It is not used in oil painting, but has the same effect in water-colours as brown pink has in oi...