Shelter and clothing; a textbook of the household arts (1920)
Kinne, Helen, 1861-1917. [from old catalog], Cooley, Anna M. (Anna Maria), b. 1874, joint author · New York, The Macmillan company · leaf 211
d. affects the twisted wall, making it(see Fig. 87). 86. —Wool fibers magnified. because they do not takethe spinning. As manyas 300 twists have beencounted on a single fila-ment. To the naked eyecotton fibers appear fluffyand dull white. Whenwoven, the threads areregular and uniform.Chemically the… … Fig, 88. Silk fibers from the cocoon examined microscopically ap-pear without any charac-teristic markings. Theyhave the appearance of asomewhat flattened com-bination of two filamentsof noticeable length andcontinuity. If mercer-ized cotton is used withsilk, the microscope re-veals it by an…
Home Economics · Textile industry and fabrics
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