To Dye Yarn Green
Take one ounce of best Spanish indigo, finely powdered, and half a pound of oil of vitriol; put them in a bottle, and let them stand in the sun a week; shake it often, but do not cork it tight, lest it should burst the bottle; take four pounds of black-oak bark, and the same of hickory, shave them fine, and soak them till wet through; then boil them in ten gallons of water till all the color is extracted; when take out the chips, put in a pound of alum; shake the bottle of indigo and vitriol, and pour it in; let them boil together a few minutes, and put in the yarn; turn it over several times, and let it boil half an hour; then spread it out in the sun for about an hour, and wash it well in strong soap-suds through two waters, to keep it from becoming tender. This will color ten pounds of yarn. You may have a fine blue color by omitting the bark. It will not answer for any thing but wool or silk, as the vitriol will destroy linen or cotton.
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