. A manual of practical hygiene. s, and then a drop of water tobe placed on it: then a needle should be drawn two or three times in the direction ofthe fibres, which will be easily detached. Then the fibre is laid on a glass and the re-agent is applied. CLOTHING. 7o Cotton—Microscopic Characters.—A diaphanous substance forming fibresabout ^Jy-g-th of an inch in diameter, flattened in shape, and ribbon-like,with an interior canal which is often obliterated, or may contain some ex-tractive matters, borders a little thickened, the fibres twisted at intervals(about 600 times in an inch). It has be
. A manual of practical hygiene. s, and then a drop of water tobe placed on it: then a needle should be drawn two or three times in the direction ofthe fibres, which will be easily detached. Then the fibre is laid on a glass and the re-agent is applied. CLOTHING. 7o Cotton—Microscopic Characters.—A diaphanous substance forming fibresabout ^Jy-g-th of an inch in diameter, flattened in shape, and ribbon-like,with an interior canal which is often obliterated, or may contain some ex-tractive matters, borders a little thickened, the fibres twisted at intervals(about 600 times in an inch). It has been stated that the fresh cottonfibre is a cylindrical hair with thin walls, which collapses and twists as itbecomes dry. Iodine stains them brown ; iodine and sulphuric acid (invery small quantities) give a blue or violet-blue ; nitric acid does not de-stroy them, but unrolls the twists. As an Article of Dress.—The fibre of cotton is exceedingly hard, itwears well, does not shrink in washing, is very non-absorbent of water.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjecthygiene, bookyear1883
