Scientific American 12, 21.9.1861
Take isinglass, 1/4 oz., indigo in fine powder, 1/4 oz., soft soap, 4 ozs., glue, 5 ozs, logwood, 4 ozs., vinegar, 2 pints, ground black, &frac21; oz., bees-wax, 1 oz. Infuse the logwood in vinegar for some time with gentle heat, and when the color is well extracted strain the liquid and add the other ingredients to it; boil until the glue is dissolved, then put it into stoneware or glass jars. This blacking will be found very convenient for the harness of artillery and other army horses.
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