2917. White Varnish

2917.    White Varnish. Sandarach, 8 ounces; mastich, 2 ounces; Canada balsam, 4 ounces; alcohol, 1 quart. Used on paper, wood, or linen.

2918. Best White Hard Varnish

2918.      Best White Hard Varnish. Rectified spirits of wine, 1 quart; gum sandarach, 10 ounces; gum mastich, 2 ounces; gum anime, 1/2 ounce; dissolve these in a clean can, or bottle, in a warm place, frequently shaking it. When the gum is dissolved, strain it through a lawn sieve, and it is fit for use.

2919. Mordant, or Transfer Varnish

2919.    Mordant, or Transfer Varnish. Mastich in tears, 61/2 ounces; resin, 12£ ounces; pale Venice turpentine (genuine) and sandarach, of each 25 ounces; alcohol, 5 pints; dissolve as before. Used for fixing engravings or lithographs on wood, and for gilding, silvering, etc.. (See No. 2928 (Transfer Varnish).)

2920. Map Varnish

2920.     Map Varnish is prepared by pulverizing 1 ounce sandarach, 1/4 ounce mastich, 1/4 ounce elemi, dissolving them in 1/2 ounce of Venice turpentine, and adding to it a solution of 4 ounces shellac, and 3 ounces oil of lavender, in 12 ounces alcohol. (See No. 2935 (French Transparent Colorless Varnish).)

2921. Canada Varnish

2921.    Canada Varnish. Clear balsam of Canada, 4 ounces; camphene, 8 ounces; warm gently, and shake together till dissolved. For maps, drawings, etc., they are first sized over with a solution of isinglass, taking care that every part is covered; when dry, the varnish is brushed over it.

2922. Collodion Varnish

2922.   Collodion Varnish. The addition of l part castor oil to 32 parts collodion, makes a good varnish; it dries rapidly and does not penetrate the paper. This varnish will do very well for coating maps, lists, labels, etc., and it will keep for years. If, after a repeated coating, white spots should appear, moisten them with ether, and they will vanish instantly.

2923. Varnish to Imitate the Chinese

2923.   Varnish to Imitate the Chinese. Put 4 ounces powdered gum-lac, with a piece of camphor about the size of a hazelnut, into a strong bottle, with 1 pound good spirits of wine. Shake the bottle from time to time, and set it over some hot embers to mix for 24 hours, if it be in winter; in summer time it may be exposed to the sun. Pass the whole through a fine cloth, and throw away what remains upon it. Let it settle for 24 hours; separate gently the clear part in the upper part of the bottle, and put into another phial; the remains will serve for the first layers or coatings.

2924. Varnish for Drawings and Lithographs

2924.      Varnish for Drawings and Lithographs. Take of dextrine, 2 parts; alcohol, 1/2 part; water, 2 parts. These should be prepared previously with 2 or 3 coats of thin starch or rice boiled and strained through a cloth. (See No. 2927 (De Sylvestre's Dextrine Varnish).)