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Tincture of Columbo

moisten 6 troy ounces rhatany, in moderately fine 4 troy ounces columbo, in moderately one powder, with 2 fluid ounces diluted alcohol; powder, and percolate 2 pints tincture in the pack it in a cylindrical glass percolator, and same manner as the colchicum in last formula. (U. S. Ph.)