Gibbs, Charlotte M. (Charlotte Mitchell), b. 1885 · Urbana-Champaign, The University · leaf 15
e result ofburning the silk. This ash, left in the shape of the original sam-ple, is made up of metallic salts, dyestuffs. etc. A very smallpercent of ash would be left from the silk itself. Another method of adulterating silk is with cotton. Thefibers are not spun together here as the cotton and… … FIG. 5 15 cheap silks a fine cotton thread sometimes forms either warpor fining. Pongee is a material made from the cocoon of the unculti-vated silk worm; rajah, tussah and other uneven, coarse mater-ials are from the same source. These silks are very strong, butdo not have a high luster.…
Textile fabrics
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