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Slate or Stone Color

Work the silk for 30 minutes in a decoction of 1 pound sumach, 4 ounces fustic, and 4 ounces logwood; lift, and add a solution of 4 ounces copperas; work 30 minutes more, wash in cold water, and finish.

For different tints, vary the proportion of sumach, &c. them each dyed a different color. This is seldom done except with new goods, or with very light colored goods which are desired to be dyed dark colors. As the process for dyeing woolens will seldom impart the same color to cottons, the two are dyed separately, and the method is quite simple. For most colors it is necessary to dye the woolen portion first, and then the cotton; but in a few cases the cotton must be the first to be acted on.