_Blue Black_.--3-1/2 lb Janus Black I and 1/3 lb. Janus Black I I in the dye-bath, and 16 lb. sumac extract and 2 lb. tartar emetic in the fixing bath. _Dark Brown_.--2-1/2 lb. Janus Brown B, 1 lb. Janus Black I, 3-1/2 oz. Janus Yellow G, and 5 oz. Janus Red B in the dye-bath, with 16 lb. sumac extract and 2 lb. tartar emetic in the fixing bath. _Drab_.--1-1/2 oz. Janus Yellow R, 1/4 oz. Janus Red B, 1 oz. Janus Blue R, and 1/4 oz. Janus Grey B B, in the dye-bath, and 4 lb. sumac extract and 1 lb. tartar emetic in the fixing-bath. _Grey_.--5 oz. Janus Blue R, 3-1/4 oz. Janus Grey B, 1-1/2 oz. Janus Yellow R, and 1/4 oz. Janus Red B in the dye-bath, with 4 lb. sumac extract and 1 lb. tartar emetic in the fixing-bath. _Nut Brown_.--1 lb. Janus Brown R, 8 oz. Janus Yellow R, and 1-1/2 oz. Janus Blue B in the dye-bath, and 8 lb. sumac extract and 1 lb. tartar emetic in the fixing-bath. _Walnut Brown_.--3 lb. Janus Brown B, 1 lb. Janus Red B, 1 lb. Janus Yellow R, and 1-1/4 oz. Janus Green B in the dye-bath, with 8 lb. sumac extract and 1 lb. tartar emetic in the fixing-bath. _Crimson_.--2-1/2 lb. Janus Red B, and 8 oz. Janus Claret Red B (p. 183) in the dye-bath, with 8 lb. sumac extract and 1 lb. tartar emetic in the fixing-bath. _Dark Green_.--1-1/2 lb. Janus Green B, 1 lb. Janus Yellow R, and 8 oz. Janus Grey B in the dye-bath, with 4 lb. sumac extract and 1-1/4 lb. tartar emetic in the fixing-bath. _Chestnut Brown_.--1 lb. Janus Brown R and 1 lb. Janus Yellow R in the dye-bath, and 8 lb. sumac extract and 1 lb. tartar emetic in the fixing-bath. Before the introduction of the direct dyes the method usually followed, and indeed is now to a great extent, is that known as Cross-dyeing. The goods were woven with dyed cotton threads of the required shade and undyed woollen threads; after weaving and cleansing the woollen part of the fabric was dyed with acid dyes such as Acid Magenta, Scarlet R, Acid Yellow, etc. In such methods care has to be taken that the dyes used for dyeing the cotton are such as stand acids, a by no means easy condition to fulfil at one time. Many of the direct dyes are fast to acids and therefore lend themselves more or less readily to cross-dyeing. For details of the dyes for cotton reference may be made to the sections on dyeing with the direct colours in the companion volume to this book on _Dyeing of Cotton Fabrics_.