Varnish, Glass. A solution of soluble glass. Used to render wood, &c., fire-proof.
Varnish, Gun-barrel. Prep. From shell-lac, 11⁄2 oz.; dragon’s blood, 3 dr.; rectified spirit, 1 quart. Applied after the barrels are ‘browned.’
Varnish, Hair. Prep. From hog’s bristles (chopped small), 1 part; drying oil, 10 parts; dissolve by heat. Said to be used to give cotton or linen cloth the appearance of horse-hair.
Varnish, India-rubber. Varnish. See Flexible (above).
Varnish, Italian. Prep. Boil Scio turpentine until brittle, powder it, and dissolve this in oil of turpentine. Used for prints, &c.
Varnish, Japan. Pale amber or copal varnish. Used for japanning tin, papier mâché, &c.
Varnish, Lac. Prep. 1. Pale seed-lac (or shell-lac), 8 oz.; rectified spirit, 1 quart; dissolve.
2. Substitute lac bleached with chlorine for seed-lac. Both are very tough, hard, and durable, but quite inflexible. Wood naphtha may be substituted for spirit. Used for pictures, metal, wood, or leather, and particularly for toys.
Varnish, Lac (Aqueous). Prep. From pale shell-lac, 5 oz.; borax, 1 oz.; water, 1 pint; digest at nearly the boiling point until dissolved; then strain. Equal to the more costly spirit varnish for many purposes; it is an excellent vehicle for water colours, inks, &c.; when dry, it is waterproof.
Varnish, Lac (Coloured). Syn. Lacquer, Brasswork varnish. Prep. 1. Take of turmeric (ground), 1 lb.; rectified spirit, 2 galls.; macerate for a week, strain, with expression, and add to the tincture, gamboge, 11⁄2 oz.; pale shell-lac, 3⁄4 lb.; gum sandarach, 31⁄2 lbs.; when dissolved, strain, and further add of good turpentine varnish, 1 quart. Gold coloured.