2388. Light Bed Enamel

2388.    Light Bed Enamel. Red sulphate of iron, 2 parts; flux I (in No. 2379) 6 parts; white lead, 3 parts. Light red.

2389. Bed Enamel

2389.    Bed Enamel. Paste or flux colored with the red or protoxide of copper. Should the color pass into the green or brown, from the partial peroxidizement of the copper, from the heat being raised too high, the red color may be restored by the addition of any carbonaceous matter, as tallow, or charcoal.

2390. Beautiful Bed Enamel

2390.    Beautiful Bed Enamel. The most beautiful and costly red, inclining to the purple tinge, is produced by tinging glass or flux with the oxide or salts of gold, or with the purple precipitate of cassius (see Nos. 2720 (To Make Purple of Cassius) to 2723), which consists of gold and tin. In the hands of the skillful artist, any of these substances produce shades of red of the most exquisite hue; when most perfect, the enamel comes from the fire quite colorless, and afterwards receives its rich hue from the flame of the blow-pipe.

2391. Rose Colored Enamels

2391.    Rose Colored Enamels. Purple enamel, or its elements, 3 parts; flux, 90 parts; mix, and add silver-leaf or oxide of silver, 1 part or less.

2392. Transparent Enamels

2392.    Transparent Enamels. Either of the first five fluxes in No. 2379.

2393. Violet Enamels

2393.    Violet Enamels. Saline or alkaline frits or fluxes colored with small quantities of peroxide of manganese. As the color depends on the metal being at the maximum of oxidation, contact with all substances that would abstract any of its oxygen should be avoided. The same remarks apply to other metallic oxides.

2394. Yellow Enamels

2394.    Yellow Enamels. Superior yellow enamels are less easily produced than most other colors; they require but little flux, and that mostly of a metallic nature. I. Red lead, 8 ounces; oxide of antimony and tin, calcined together, each 1 ounce; mix, and add flux IV. (in No. 2379), 15 ounces; mix and fuse. By varying the proportion of the ingredients, various shades may be produced.

II.  Lead, tin ashes, litharge, antimony, and sand, each 1 ounce ; nitre, 4 ounces; mix, fuse, and powder, and add the product to any quantity of flux, according to the color required.

III.  Flux fused with oxide of lead, and a little red oxide of iron.

IV.    Pure oxide of silver added to the metallic fluxes. The salts of silver are also used, but are difficult to manage. If a thin film of oxide of silver be spread over the surface of the enamel to be colored, exposed to a moderate heat, then withdrawn, and the film of reduced silver on the surface removed, the part under will be found tinged of a fine yel-low.

2395. Bright Yellow Enamel

2395.    Bright Yellow Enamel. White oxide of antimony, alum, and sal ammoniac, each 1 part; pure carbonate of lead, 1 to 3 parts, as required, all in powder; mix, and expose to a heat sufficiently high to decompose the sal ammoniac.