Did you perchance mean nigrosine?
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“Thus, once somebody called an aniline dye, which is soluble in water and is called "nigrosin," by the name "moorosin," and asked for it under that name in the store.”
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A colorhouse - a manufactory of colors for tints, dyes, pigments, paints, glazes, &c. Terms associated with the science and history of colormaking.
All sorts of things went into color...
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