Hummel, J. J. (John James), d. 1902 · London : Cassell · leaf 39
ised wool dyes deepershades and more rapidly than ordinary wool. (3) The central, or medullary, portion of the woolfibre, when present, is formed of several layers ofrhombic or cubical cells, whicli appear as the marrowor pith of the fibre, and may traverse its whole lengthor appear only in parts.… … Fig. 9.—Cells of W^oolFibre under the Mi-croscope. 26 DTEIKG OF TEXTILE FABRICS. [Char IH. upon, a Tarisfcy of Actors, e.g., ra.oe, healtli of indiTidual,part dTthe body fiom wliicli the wool is taken, <tc. In colourless wool Hhe medTillarr portion often appearsunda die naiarosot^ as a dark or…
Dyes and dyeing
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