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To dye white gloves of a beautiful purple, boil four ounces of logwood, and two ounces of roche alum, in three pints of soft water, till half wasted.

By infusing brazil wood, French berries, or indigo in the vinegar, with a little roche alum, either red, yellow, or blue may be produced.

This article must first be prepared, by being steeped for several days in a mixture of roche alum, vitriol, verdigris, and copper filings, infused in white wine vinegar.