(1) Powder a little Prussian blue, and mix to the consistency of paint with beer; brush it on the wood, and when dry size it with glue dissolved in boiling water; apply lukewarm, and let this dry also; then varnish or French polish.

(2) Indigo solution, or a concentrated hot solution of blue vitriol, followed by a dip in a solution of washing soda.

(3) Prepare as for violet, and dye with aniline blue.

(4) A beautiful blue stain is obtained by gradually stirring 0.52 oz. finely-powdered indigo into 4.2 oz. sulphuric acid of 60 per cent., and by exposing this mixture for 12 hours to a temperature of 77° F. (25° C). The mass is then poured into 11-13.2 lb. rain-water, and filtered through felt. This filtered water is applied several times to the wood, until the desired colour has been obtained. The more the solution is diluted with water, the lighter will bo the colour.

(5) 1.05 oz. finest indigo carmine, dissolved in 8.75 oz. water, applied several times to the articles to be stained. A very fine blue is in this manner obtained.

(6) 3.5 oz. French verdigris are dissolved in 3.5 oz. urine and 8.75 oz. wine vinegar. The solution is filtered and applied to the article to be stained. Then a solution of 2.1 oz. potash carbonate in 8.75 oz. rain-water is prepared, and the article coloured with the verdigris is brushed over with this solution until the desired blue colour makes its appearance.

(7) The newest processes of staining wood blue are those with aniline colours. The following colours may be chosen for the staining liquor : - Bleu de Lyon (reddish blue), bleu de lumiere (pure blue), light blue (greenish blue). These colours are dissolved in the proportion of 1 part colouring substance to 30 of spirit of wine, and the wood is treated with the solution.


(1) Various tones may be produced by mordanting with potash chromate, and applying a decoction of fustic, of logwood, or of peachwood.

(2) Sulphuric acid, more or less diluted according to the intensity of the colour to be produced, is applied with a brush to the wood, previously cleaned and dried. A lighter or darker brown stain is obtained, according to the strength of the acid. When the acid has acted sufficiently, its further action is arrested by the application of ammonia.

(3) Tincture of iodine yields a fine brown coloration, which, however, is not permanent unless the air is excluded by a thick coating of polish.

(4) A simple brown wash is 1/2 oz. alkanet root, 1 oz. aloes, 1 oz. dragons' blood, digested in 1 lb. alcohol. This is applied after the wood has been washed with aqua regia, but is, like all the alcoholic washes, not very durable.