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.
Dupion (Du'Pion). A double cocoon formed by two silk worms spinning together. The coarse silk furnished by such double cocoons.
 
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