. Useful information for cotton manufacturers . us one will be disappointing; the behavior of one cropwhen worked at a certain standard of moisture in the differ-ent departments is a guide for the next one. but not aninfallible rule. Again, the problem is complicated by thevariable amount of oil in the fibre,—many planters nowrealizing the advantage of leaving the seed in the cotton aslong as possible before ginning, so that the fibre may absorbas much oil as possible. 1343 STUART W. CRAMER As to the effect of humidity on the appearance of yarn, thefollowing cut shows a micrograph illustrating
. Useful information for cotton manufacturers . us one will be disappointing; the behavior of one cropwhen worked at a certain standard of moisture in the differ-ent departments is a guide for the next one. but not aninfallible rule. Again, the problem is complicated by thevariable amount of oil in the fibre,—many planters nowrealizing the advantage of leaving the seed in the cotton aslong as possible before ginning, so that the fibre may absorbas much oil as possible. 1343 STUART W. CRAMER As to the effect of humidity on the appearance of yarn, thefollowing cut shows a micrograph illustratingEffect of it* the Presence The yarn above was spun wnth relative of Moisture humidity at 80% and the yarn below^ at 457c. on the both being the same counts, at the same tem- Appearance peratures, and all other conditions the same. of Yarn. The yarn spun at low humidity appears to be twice as large as the other, and is not soclose, compact and smooth; furthermore, the drier the atmos-phere in which it is spun the more oozy the yarn. It is in-. (Beaty) teresting to note, however, that after 65% humidity waspassed, it was impossible to distinguish any difference inthe appearance of the yarn. From all of which it appearsthat yarns spun in an atmosphere of 65% relative humidityand above, appear to the best advantage,—although an in-crease of the humidity beyond 65% adds nothing further toits appearance. It appears that the alternate moistening, drying andmoistening of woven cotton fabrics do notThe Effect of materiallv effect their strength, as is shown Drymgand ^^ ^^^ following tests made bv the Industrial Dampening g^^j^^^^ ^^ Mulhousen. Cloth. Normal Strength of Cloth 100 Saturated with Moisture 104 Dried on Hot Cylinders 86 Again Dampened 103 *—The percentages of relative humidity were taken with ahygrometer and their accuracy is therefore open to question; still,they answer well enough for purposes of comparison. 1344 Providence, R. I. Charlotte, N. C Atlanta, Ga. M
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcottonm, bookyear1904
