Important: Safety Warning
This page describes trade processes that use dangerously toxic materials such as cyanide solutions, mercury amalgams, or strong acids. These processes require training, equipment, and precautions far beyond what the text describes.
This information has been left in for historical purposes but should not be acted upon.
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Harness Liquid Blacking
Dissolve by heat, 4 ounces glue or gelatine oil and oil of vitriol, of each 1 pound. Mix gelatine oil and oil of vitriol, of each + pound. Mix and 3 ounces gum arabic in pint water; add 7 ounces molasses and 5 ounces ivory black in very fine powder; gently evaporate until of a proper consistence when cold, stirring all the time. Keep in corked bottles. 3082. the first three as before, then gradually add the vitriol, diluted with thrice its weight of water; mix well, and let it stand for 3 hours, 3 hours, when it may be reduced to a proper consistence with water or sour beer .
Harness Waterproof Paste 3089. Liquid Jet Blacking. Ivory- Blacking. Melt together 2 ounces mutton 3082. Harness Waterproof Paste black and molasses, of each 1/4 pound; oil of black and molasses, of each + pound; oil of suet and 6 ounces bees' wax; add 6 ounces vitriol, 1 ounce; sweet oil, 2 ounces; sour sugar candy, 2 ounces soft soap, 2½ ounces beer, 1 pint; finish as last receipt. 3090. Good Liquid Blacking . Ivorylampblack, and ounce indigo in fine powder; when thoroughly mixed add 1/4 pint of black, 7 pounds; molasses, 6 pounds; sweet oil of turpentine; put into pots or tins . 3083. Harness Waterproof Cake Blacking. Melt 1 pound bees' wax, 1 ounce Prussian blue ground in 2 ounces linseed oil , 4 pound ivory black, 3 ounces oil of turpenof turpentine and 1 ounce copal varnish; mix well towell together and form into cakes whilst warm.