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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Mordant Brown
Steep the goods for six hours in a decoction of sumach, next dye a spirit yellow, according to the receipt given above. Then work for half an hour through a decoction of 2 pounds limawood and 8 ounces logwood; lift the goods, and add 2 ounces alum in solution; work for 15 minutes, wash and dry. This method is well adapted for cotton goods, is better than the spirits, and more easily performed by the nonpractical man. The spirit brown is best for yarn. acetate of lead in solution; wash in cold water and dry. 152. Catechu Fawns-Another Method. Work in warm water containing 4 pints catechu (sce No. 96), lift, and add 2 ounces copperas in solution, and work for 15 minutes; wash in water, and then in another tub of warm water in which sufficient soap has been dissolved to raise a lather, and then dry.