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Another (Peach-stones burnt in a close)

Peach-stones, burnt in a close vessel, produce a charcoal, which, when ground on porphyry, is employed in painting to give an old particular case, if a very fine durable white be regray. quired, grind it with a little essence, and mix it with sandarach or varnish.

Another. Vine twigs reduced to charcoal give a bluish black, which goes a great way. When To Paint in Light Gray and Distemper. mixed with white it produces a silver white, which is not produced by other blacks; it has a Ceruse, mixed with a small quantity of lampblack, composes a gray, more or less charged, ac pretty near resemblance to the black of peach | cording to the quantity of black. With this mat