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.
Drap De Alma (Drap-De A'L-Ma). A fine close, flat-twilled dress fabric of wool, or silk and wool, finished on but one side; somewhat heavier than cashmere. The twill weave of Drap de Alma is very similar to Satin Royal, and only different from a Satin Rhadame twill in the diagonal lines being closer together.
 
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