Pulverize 160 parts, by weight, turmeric root, cover it with 1,700 parts alcohol, digest in a warm place for 24 hours, and then filter. Dissolve 80 parts dragon's blood, 80 parts sandarac, 80 parts gum elemi, 50 parts gum gutta, and 70 parts seed lac, put in a retort with 250 parts powdered glass, pour over them the colored alcohol first made, and hasten solution by warming in the sand or water bath. When completely dissolved, filter.

To Fix Alcoholic Lacquers on Metallic Surfaces

Dissolve 0.5 parts of crystallized boracic acid in 100 parts of the respective spirit varnish whereby the latter after being applied forms so hard a coating upon a smooth tin surface that it cannot be scratched off even with the finger-nails. The aforementioned percentage of boracic acid should not be exceeded in preparing the solution; otherwise the varnish will lose in intensity of color.                               

Lacquer for Oil Paintings

Dilute 100 parts of sulphate of baryta with 600 parts of water containing in' solution 60 parts of red lithol R or G in paste of 17 per cent., Boil the mixture for several minutes in a solution of 10 parts of barium chloride in 100 parts of water. After cooling filter and dry.

Lacquers for Papers

I

With base of baryta: Dissolve 30 parts of red lithol R or G in paste of 17 per cent, in 300 parts of hot water. Add an emulsion obtained by mixing 10 parts of sulphate of alumina in 100 parts of water and 5 parts of calcined soda dissolved in 50 parts of water. Precipitate with a solution of 17.5 parts of barium chloride in 125 parts of water. Cool and filter.

II

With base of lime: Dissolve 30 parts red lithol R or G in paste of 17 per cent, in 300 parts of hot water. Boil for a few minutes with an emulsion prepared by mixing 10 parts sulphate of alumina with 100 parts of water and 2.5 parts of slaked lime in 100 parts of water. Filter after cooling.

Lacquer for Stoves and other Articles to Withstand Heat

This is not altered by heat, and does not give off disagree-, able odors on heating: Thin 1 part of sodium water glass with 2 parts of water in order to make the vehicle. This is to be thickened with the following materials in order to get the desired color: White, barium sulphate or white lead; yellow, baryta chromate, ocher, or uranium yellow; green, chromium oxide or ultramarine green; brown, cadmium oxide, manganese oxide, or sienna brown; red, either iron or chrome red. The coloring materials must be free from lumps, and well ground in with the vehicle. Bronze powders may also be used either alone or mixed with other coloring stuffs, but care must be taken, in either instance, to secure a sufficient quantity. The colors should be made up as wanted, and no more than can conveniently be applied at the time should be prepared. An excellent way to use the bronze powders is to lay on the coloring matter, and then to dust on the powder before the glass sets. Lines or ornamentation of any sort may be put on by allowing the coating of enamel to dry, and then drawing the lines or any desired design with a fresh solution of the water glass colored to suit the taste, or dusted over with bronze.