A manual of dyeing: for the use of practical dyers, manufacturers, students, and all interested in the art of dyeing (1910)
Knecht, Edmund, 1861-1925, Loewenthal, Richard, Rawson, Christopher · London, C. Griffin · leaf 177
that,in the condition in which it comes into the market, wool contains, in additionto suint and yolk, vegetable impurities (burrs) which cannot be entirely got ridof in washing. These burrs which cling to the fleece of the .sheep are the fruitsof plants (burr weeds) which represent principally… … It is especially those belonging to the latter category (medicks) which, owingto their peculiar structure, it is impossible to entirely remove by combing,carding, or any other mechanical process. These burrs are almost invari-ably present in Botany wool, more especially in the better qualities.…
Dyes and dyeing
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