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Catechu Drab

Work for 15 minutes in hot water containing 1 pint prepared catechu (see No. 93); lift, and add 1 ounce pounds sumach until cool; work in red spirits copperas; work 10 minutes; wash out and (sce No. 108) at 14° Baumé for an hour, and wash in cold water; then work for half an hour in a decoction of 3 pounds logwood at 140° Fahr.; lift, and add 1 gill red spirits, and work 10 minutes more; wash in cold water and dry.

If a browner tint is required, use a little more sumach; for a bluer tint, use less sumach and more logwood; and add, after lifting, 1/2 pint red liquor (see No. 100), or 2 ounces alum, instead of red spirits.