Following are miscellaneous recipes for lacquering metallic surfaces of all kinds. (1) For gold: 1 gal. alcohol, 1/2 lb. turmeric; macerate for a week, then filter, and add 2 oz. gamboge, 6 oz. shellac, 1 3/4 lb. gum - sandarach; dissolve in warm bath, and add 1 qt. common turpentine varnish. For red lacquer use 1 1/2 lb. annatto instead of the turmeric, and 8 oz. dragon's blood instead of the gamboge. (2) Pale: alcohol, 8 oz.; turmeric, 4 dr.; dragon's blood, 4 scr.; red sanders, 1 scr.; hay saffron, 2 scr.; shellac, 1 oz.; gum - sandarach, 2 dr.; gum - mastic, 2 dr.; Canada balsam, 2 dr.; dissolve, and add 1 1/2 dr. spirits of turpentine. (3) The following is an excellent lacquer for brass:- Seed - lac, 12 oz.; copal, 4 oz.; dragon's blood, 80 gr.; extract of red sanders - wood, 50 gr.; saffron, 70 gr.; pounded glass, 1/2 lb.; spirits of wine, 2 qt. This is very durable. (4) Pale: 1 gal. methylated spirits of wine, 5 oz, shellac, 4 oz. gum - sandarach, and 1 oz. gum - elemi; mix in a tin flask, and expose to a gentle heat for a day or two; then strain off and add 1/2 gal. spirit to the sediment, and treat as before. (5) Pale gold: 1 gal. methylated spirits of wine, 10 oz. seed - lac bruised, and 1/2 oz. red sanders; dissolve and strain. (6) A paste is made of finely - pulverized quartz, carbonate of potash (or oxide of lead) and water, according to the colour required.

A thin coat of this is applied with a brush to the object, which is then placed in a muffle, and heated to 1495° F. (811° C). The articles emerge covered with a sort of polished glass, which resists blows, and which does not split nor scale off, while it serves perfectly to protect the metal against oxidation. (7) Petroleum essence, 1 lb.; boiled linseed - oil, 1/2 lb.; to be mixed cold. Metallic plates prepared for lithography, etc, are brushed over with this varnish (applied cold)'; when dried by heating, it has a golden yellow tint. (Bul. Soc. Chim.) (8) Green Varnish for Metals. - Finely pulverized gum - sandarach or mastic (the latter, however, is too expensive for some uses) is dissolved in strong potash lye until it will dissolve no more. The solution is diluted with water, and precipitated with a solution of a copper salt, either sulphate or acetate. This green precipitate is washed, dried, and dissolved in oil of turpentine, producing a fine green varnish which does not change under the effect of light, and will be especially useful for ornamental iron - work. (Industrie Blatter.) (9) Green Transparent Varnish. - Grind a small quantity of Chinese blue with double the quantity of finely powdered chromate of potash (it requires most elaborate grinding); add a sufficient quantity of copal varnish, thinned with turpentine.

The tone may be altered by more or less of one or the other ingredients. (10) Green Bronze Liquid. - 1 qt. strong vinegar, 1/2 oz. mineral green, 1/2 oz. raw umber, 1/2 oz. sal - ammoniac, 1/2 oz. gum - arabic, 2 oz. French berries, 1/2 oz. copperas; dissolve the whole in a pipkin over a gentle fire, allow to cool, and then filter. (11) Green Lacquer. - Mix 5 oz. shellac, 6 oz. turmeric, 4 oz. gum - sradarach, and 1 oz. each gum - elemi and gum - gamboge in 1 gal. methylated spirits; expose to a gentle heat, strain, add 1/2 gal. spirit to the sediment, and treat as before. (12) Gold - coloured Lacquer for Brass Watch - cases, etc. - 6 oz. seed - lac, 2 oz. amber, 2 oz. gamboge, 24 gr. extract of red sanders - wood in water, 60 gr. dragons' - blood, 36 gr. oriental saffron, 4 oz. powdered glass, 36 oz. pure alcohol. The seed - lac, amber, gamboge, and dragons' - blood must be pounded very fine on porphyry or clean marble, and mixed with the pounded glass. Over this mixture is poured the tincture formed by infusing the saffron and the sanders - wood extract in the alcohol for 24 hours, then straining.

Metallic articles that are to be covered with this varnish are heated, and, if they admit of it, immersed in packets. (13) For philosophical instruments : 1 1/2 oz. gamboge, 4 oz. sandarach, 4 oz. elemi, 2 oz. best dragons' - blood, 1 1/2 oz. terra merita [terra merita is the root of an Indian plant; it is of a red colour, and much used in dyeing; in varnishing, it is only employed in the form of a tincture, and is particularly well adapted for the mixture of those colouring parts which contribute the most towards giving metals the colour of gold; in choosing it, be careful to observe that it is sound and compact], 4 gr. oriental saffron, 2 oz. seed - lac, 6 oz. pounded glass, 40 oz. pure alcohol. The dragons' - blood, gum - elemi, seed - lac, and gamboge are all pounded and mixed with the glass. Over them is poured the tincture obtained by infusing the saffron and terra merita in the alcohol for 24 hours. This tincture, before being poured over the dragons' - blood, etc, should be strained through a piece of clean linen cloth, and strongly squeezed. If the dragons' - blood gives too high a colour, the quantity may be lessened according to circumstances. The same is the case with the other colouring matters.

This lacquer has a very good effect when applied to many cast or moulded articles used in ornamenting furniture.