Peacock Blue.--Mordant with 3 lb. bichromate of potash and 2-1/2 lb. tartar. Dye with 6 lb. Alizarine Blue D N W, 3 lb. Alizarine Yellow, and 1-1/2 lb. Patent Blue A, adding a little acetic acid to the dye-bath.
Paris Blue.--Mordant as in the last recipe. Dye with 3 lb. Galleine, 1 lb. Alizarine Blue D N W, and 1 lb. Patent Blue A, adding a little acetic acid.
Grey Blue.--Mordant as above and dye with 4-1/2 lb. Alizarine Blue D N W, and 1 lb. Alizarine Brown.
Blue.--Mordant with 10 lb. alum, 3 lb. tartar, and 2 lb. oxalic acid. Dye with 15 lb. Anthracene Blue W G, 3 lb. acetate of lime, and 1 lb. tannic acid.
Red Navy.--Mordant as in the last recipe and dye with 15 lb. Anthracene Blue B W, 3 lb. acetate of lime, and 3/4 lb. tannic acid.
Dark Blue.--Mordant with 1 lb. bichromate of potash and 2 lb. tartar. Then dye with 20 lb. Anthracene Blue W B. Anthracene Blue W G gives slightly greener shades than the W B brand, while the W R blue gives redder shades.
Grounding wool with various tints of indigo is a favourite method of producing many useful shades on wool. In general it is a good plan, as the bottom so given is a fast and permanent one, and is not in any way affected (so far as the stability of the colour is concerned) by the subsequent dyeing operations, care of course being taken that these are the usual acid or mordanting baths. The only drawback against bottoming with indigo is the increased cost of dyeing necessitated by the extra labour, and materials required to dye the bottom. As to the methods and materials required, they are just those usually employed in indigo dyeing, and these have been described. The hydrosulphite vat, or Messrs. Holliday's patent indigo, is, perhaps, the most convenient method to adopt.
Dark Slate.--Give a medium indigo bottom, then mordant with 3 lb. fluoride of chrome and 1 lb. oxalic acid, and dye with 1-1/2 lb. Anthracene Brown W, 1/2 lb. Alizarine Bordeaux G, and 1 oz. Diamond Flavine.
Dark Navy.--Give a medium indigo bottom in the vat, then mordant with 3 lb. fluoride of chrome and 1-1/2 lb. tartar, finally dyeing with 6-1/2 lb. Alizarine Cyanine G, and 1-1/2 lb. Alizarine Bordeaux G.
Dark Blue.--Give a medium indigo bottom, then mordant with 6 lb. fluoride of chrome and 2 lb. oxalic acid, finally dyeing with 14 lb. Alizarine Cyanine Black.