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To make Solutions for Dyeing

In making solutions of copperas, blue stone, chrome, &c., there is no fixed rule to be followed. A quantity of the crystals are put into a vessel, and boiling water poured upon them and stirred until dissolved. Some salts require less water than others when saturated solutions are wanted; but in the dyehouse saturation is not essential, and therefore there is always used ample water to dissolve the salt. In all cases, however, the proportions are known, so that the operator, when If the goods be old, and have previously adding a gallon, or any other quantity of liquor to the dye-bath, knows how much salt that portion contains. From 1/2 to 1 pound per gallon is a common quantity. 122. To Prepare Cotton Yarn for Dyeing. Cotton yarn, when spun, is put up in hanks, a certain number of which combined constitute a head; the number of hanks ranging from 6 to 20, according as the fineness of the yarn varies from very coarse to very fine. Sufficient of these heads are tied together, or banded with stout twine into a bundle, to make 10 pounds.

In bleaching cloth for dyeing, care has to be taken that it is all equally white, otherwise it will show in the color. The quantity of water used should be sufficient to cover the cloth easily without pressure. been dyed, and if the shade required be a deep shade, and the color of the goods light, in that case nothing is generally required but steeping in alkaline lye to remove any grease or starch; but if the color of the cloth is dark, the best method is to bleach as if they were gray goods.