The textile fibres; their physical, microscopical, and chemical properties (1904)
Matthews, J. Merritt (Joseph Merritt), 1874-1931 · New York, J. Wiley & sons; [etc., etc.] · leaf 88
(a) Fig. 25.—Cross-sections of Silk Fibre. a, from inner part of cocoon; b, from middle layers of cocoon; c, from outer part of cocoon; /, fibre of fibroin; s, layer of sericin. inner layers, of course, are not capable of being reeled with therest of the cocoon, and are used for waste silk. The…
Textile fibers
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