. Cyclopedia of textile work : a general reference library on cotton, woollen and worsted yarn manufacture, weaving, designing, chemistry and dyeing, finishing, knitting, and allied subjects . )ossessing thick walls and a nunute central canal. Atirregular intervals faint transverse markings may be detected, andthese are often pronounced in the larger fibres. (See Fig. 6.)Flax line varies considerably in length and diameter, since it iscomposed of a varying number of constituent fibres, but theultimate fibres are a[)[)roximately 25 to 30 millimeters in length,and .02 to .02) millimeters in diam
. Cyclopedia of textile work : a general reference library on cotton, woollen and worsted yarn manufacture, weaving, designing, chemistry and dyeing, finishing, knitting, and allied subjects . )ossessing thick walls and a nunute central canal. Atirregular intervals faint transverse markings may be detected, andthese are often pronounced in the larger fibres. (See Fig. 6.)Flax line varies considerably in length and diameter, since it iscomposed of a varying number of constituent fibres, but theultimate fibres are a[)[)roximately 25 to 30 millimeters in length,and .02 to .02) millimeters in diameter. Linen is stronger tiian cotton, possesses greater lustre, and isa better conductor of heat. It is for the latter reason that itmakes cooler clothing. Linen is hygroscopic to about the sameextent as cotton, containing (3 to 8 per cent of moisture. 41. Chemical Composition. Like cotton, linen consists for 27 20 TEXTILE ClIEMTSTRY AND Fitr. (). the most part of cellulose, but in the raw and luiLleached state it ismixed with from 15 to 30 per cent of natural impurities. Amongtnese natural impurities, pectic acid is the most abundant, andthis is accompanied witli sinaller amounts of fatty and colormgmatters. 42. Action of Reagents. In general, linen acts like cotton with reagents. SchweitzersReagent dissolves pure linenas readily as it does cotton. The action of mineralacids on bleached linen isalmost identical with theiraction on cotton, but in thecase of raw and unbleachedlinen the action is a littlemore energetic, owing to thelarge percentage of naturalimpurities present. For thisreason, linen is also renderedmuch more difficult to bleach than cotton. The action of mordants and dyestnffs on linen is veiysimilar to tlieir action on cotton, but linen is usually more diffi-cult to dye, not being as easily penetrated as cotton. JUTE. 43. Jute is tlie most important vegetable fibre after principal source is I
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