er, 70° or tained in the strippings of machine cards in factories, which 80°C=160° to 175° F., would remove the liquid entirely, and do not first extract a portion of the oil by pressure, and then amounts to one third of the entire weight, is the source of a leave the fiber of the wool wholly uninj… … the dust and clean away the old oil. This opera- terial is reduced in advance to about one half its tion is completed in a few minutes, after which the move- original volume. previous stages of the manufacture; and, after being thus re- ment is exposed to air heated to a temperature a little above…
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