For a fast black dye for stockings that have become green by exposure to the sun, dissolve l1b. of copperas and 2oz. of blue vitriol in 1 gal. of water; place the stockings in this, raise gradually to the boil, and wring out. Then place them in a bath made by boiling 51b. of logwood chips in 1 gal. of water; raise to the boil, and keep boiling for about half an hour; pass through tepid water two or three times to remove the excess of logwood, and dry. Lay them out flat before they are quite dry, and hot press.