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2707. Silk (Crimson). Take about a spoonful of cudbear, put it into a small pan, pour boiling water upon it; stir and let it stand a few minutes, then put in the silk, and turn it over in a short time, and when the colour is full enough, take it out; but if it should require more violet or crimson, add a spoonful or two of purple archil to some warm water; steep, and dry it within doors. It must be mangled, and ought to be pressed. 2708. Silk (Lilac). For every pound of silk, take one and a half pounds of archil, mix it well with the liquor; make it boil for a quarter of an hour, dip the silk quickly, then let it cool, and wash it in river water, and a fine half violet, or lilac, more or less full, will be obtained. 2709. Silk (Madder Red). Use the dye for cloth. 2710. Silk (Yellow). Take clear wheat bran liquor fifteen pounds, in which dissolve three quarters of a pound of alum; boil the silk in this for two hours, and afterwards take half a pound of weld, and boil it till the colour is good. Nitre used with alum and water in the first boiling fixes the colour. 2711. Wool (Blue). Boil in a decoction of logwood and sulphate or acetate of copper. 2712. Wool (Brown). Steep in an infusion of green walnut-peels. 2713. Wool (Drab). Impregnate with brown oxide of iron, and then dip in a bath of quercitron bark. It sumach is added, it will make the colour a dark brown.