Root-Ends and Skin Pieces in Woolen Materials, Part 1
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Article by W. von Bergen arguing that root-ends and skin pieces found under the microscope in woolen cloth do not prove that pulled wool is present, since they also occur in the best fleece wool. It covers three sources: shed hairs in fleece (including wool that grows off through undernourishment or illness), skin pieces cut from the sheep during shearing, and pulled or skin wool removed by lime/sodium sulphide or by the sweating method. It then describes how skin pieces behave in sorting, scouring, worsted and woolen spinning, and weaving. Seven micrograph and photograph illustrations show roots and skin parts, including the effect of caustic soda; the article is continued in a later part.
- Type
- Article
- Date
- October 1930
- Language
- English
- Pages
- 4
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From Ralph Griswold's Digital Archive, delivered by the University of Arizona.
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