Gibbs, Charlotte Mitchell, 1885- [from old catalog], Illinois. University. Dept. of household science. [from old catalog] · Urbana, The University of Illinois · leaf 14
e simplest test for good silk; a thread of pure silkwill burn slowly, leaving as it burns a very small amount of crisp ashin a ball at the end of the thread. Heavily weighted silk burns andleaves the ash in the form of the original thread; this ash of coursedrops to pieces readily. Figure 5A shows… … Figure 5 14 University of Illinois Bulletin [August, metallic salts, dyestuffs, etc. A very small percentage of ash would beleft from the silk itself. Another method of adulterating silk is with cotton. The fibers arenot spun together, as the cotton and wool, but the threads of the twomaterials are…
Textile industry and fabrics
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