This section is from the "A Complete Dictionary of Dry Goods" book, by George S. Cole. Also available from Amazon: A complete dictionary of dry goods and history of silk, cotton, linen, wool and other fibrous substances,: Including a full explanation of the modern processes ... together with various useful tables.
Pigment Color. In dyeing, a color prepared in the form of a powder, and insoluble in the liquid by which it is applied to the fabric. Pigments are distinguished from other dyes and washes by their entire insolubility in the media in which they are mixed: whereas dye-stuffs are tinctorial substances applied in solution.
 
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