A clear dark green -may be made by mixing aniline dyes as sold at most druggists' with plenty of hot vinegar. Green and blue yield a useful tone. Or apply hot 2 oz. of verdigris 1/2 oz. of China blue, and 1 pt. of vinegar; several coats will be required. These water stains have a tendency to raise the grain. The subsequent rubbing down with glasspaper will give the white flecks often seen on frames. If this is objected to, colour must be used in the polish or varnish. Another simple plan is to use emerald and bronze green mixed in hot beer.