3793. To Bronze Paper

3793.     To Bronze Paper. Paper is bronzed by mixing the powders up with a little gum and watery and afterwards burnishing. The paper used should contain sufficient sizing not to absorb the gum.

3794. Beautiful Red Bronze Powder

3794.    Beautiful Red Bronze Powder.

Mix together sulphate of copper, 100 parts; carbonate of soda, 60 parts; apply heat until they unite into a mass, then cool, powder, and add copper filings, 15 parts; well mix, and keep them at a white heat for 20 minutes, then cool, powder, wash thoroughly with water, and dry.

3795. Gold Colored Bronze Powder

3795.    Gold Colored Bronze Powder. Verdigris, 8 ounces; tutty powder, 4 ounces; borax and nitre, each 2 ounces; bichloride of mercury, 1/4 ounce; make them into a paste with oil, and fuse them together. Used in japanning as a gold color. Or: Grind Dutch foil or pure gold leaf to an impalpable powder. (See Nos. 2491 (Gold Ink) and 2517.)

3796. Silver White Bronze Powder

3796.    Silver White Bronze Powder. Melt together 1 ounce each bismuth and tin, then add 1 ounce running quicksilver; cool and powder.

3797. Graham's Quick Bronzing Liquids

3797.     Graham's Quick Bronzing Liquids. The following 19 receipts are preparations for bronzing brass, copper, and zinc, by simple immersion. Their action is immediate.

3798. Black or Brown Bronzing for Brass, Copper, or Zinc

3798.    Black or Brown Bronzing for Brass, Copper, or Zinc. Dissolve 5 drachms nitrate of iron in 1 pint water. Or: 5 drachms perchloride of iron in 1 pint water. A black may also be obtained from 10 ounces muriate of arsenic in 2 pints permuriate of iron, and 1 pint water.

3799. Brown or Red Bronzing for Brass

3799.     Brown or Red Bronzing for Brass. Dissolve 16 drachms nitrate of iron, and 16 drachms hyposulphite of soda, in 1 pint water. Or: 1 drachm nitric acid may be substituted for the nitrate of iron.

3800. Red-Brown Bronzing for Brass

3800. Red-Brown Bronzing for Brass. Dissolve 1 ounce nitrate of copper, and 1 ounce oxalic acid, in 1 pint water, brought to the boil, and then cooled. Or: 1 pint solution of ferrocyanide of potassium and 3 drachms nitric acid. This latter is slow in action, taking an hour to produce good results.

3801. Dark Brown Bronzing for Brass

3801. Dark Brown Bronzing for Brass. Mix 1 ounce cyanide of potassium, and 4 drachms nitric acid, with 1 pint water.

3802. Red Bronzing for Brass

3802.    Red Bronzing for Brass. Mix 30 grains tersulphite of arsenic, 6 drachms solution of pearl ash, and 1 pint water.

3803. Orange Bronzing for Brass

3803.     Orange Bronzing for Brass. Mix 1 drachm potash solution of sulphur with

1 pint water.