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.
Cassimere. [From Cashmere] A general term applied to a class of all wool cloths used for men's clothing, woven plain or twilled, coarse or fine of "woolen" yarn. The pattern of Cassimere is always woven in the loom, and the cloth is never napped. In order to make the pattern more distinct, Cassimeres on leaving the loom are slightly felted and then are subjected to the process of singeing, to remove from their surface all superfluous nap or the ends of wool which have been ruffed up in weaving and milling, producing a smooth, clean surface. It remains a mooted question which are the better for wear for men's clothing, worsteds or cassimeres. The advocates of the latter contend that the looser and more pliable a wool cloth is woven and the greater amount of elasticity preserved, the better it will produce a resisting surface. [See Woolen and Worsted, Weaving]