| No. 20's count and under | = | coarse. |
| Nos. 21's to 40's | = | medium. |
| No. 41's and over | = | fine. |
Cotton yarn is sometimes found as a Mercerised Grey Yarn. The fact that cotton yarn is in the unbleached state does not necessarily mean that it has not been advanced beyond that stage; it may be in the grey and at the same time be mercerised. [See "Cabled Yarns"] and ["Folded Yarn."]
Yarn-dyed.—Yarn-dyed goods are made of yarns that are dyed before being woven or yarns spun from wool that has previously been dyed. Yarn-dyed may be distinguished from piece-dyed fabrics by unravelling the threads of each kind. Yarn-dyed fabrics show that the dye-stuff has penetrated through the yarn, while in the case of piece-dyed fabrics the dye-stuff has not the same chance of penetrating the yarn as completely.
Zephyrs.—Lightly constructed, coloured, plain-woven cloths, well finished, in the pure state, principally woven from fine cotton yarns. There are also silk and cotton woven Zephyrs and woollen Zephyrs. [See Madras].
Zibeline.—The French name for Sable, used to designate a dress or cloaking material having a hairy surface.