In order to obtain a yellowish chocolate, add, for each quart, 1 oz. extract of bark at 304° Tw. This chocolate may also be prepared from stale red colours by adding to them, for each quart, 4-1 oz. red prussiate of potash dissolved in hot water.
(3) Chromium Chocolate.—Take 70 fi. oz. Pernod's extract of madder in paste ; the same measure of acetic acid at 94° Tw., and 105 fi. oz. acetate of chromium at 254° Tw. Mix well, print, and steam.
In place of Pernod's extract, a proportionally smaller qaantity of alizarine will uow be used.
(4) Chocolate.—Sapan liquor at 9° Tw., 12 qt. ; nitrate of alumina, 3 qt.; logwood liquor at 12° Tw., 6 qt. ; yellow prussiate, 6 uz. ; red prussiate, 6 oz.; chlorate of potash, 9 lb.
Cinnamon.—Cochineal liquor at 8° Tw., 1 qt.; logwood liquor at 8° Tw., 1 qt.; berry liquor at 10° Tw., 1 qt. ; alum, 6 oz.; alum 4 oz. ; cream of tartar, 4 oz. ; starch, a lb. Boil, and, while still warm, add tin crystals, 3 oz.
Dark Drab.—Berry liquor at 12° Tw., 4 qt.; gum substitute, 7 lb. Boil, cool, and add alum, 24 oz. ; copperas, 16 oz. ; logwood liquor at 2° Tw., 1 qt.; cochineal liquor at 3° Tw., 1 qt.
Drab.—Lavender liquor, 2 gal.; blue standard, 2 gal. ; bark liquor 8° Tw., 2 qt. ; gum water, 20-35 gal.
To make the blue standard, take water 2 gal. ; yellow prussiate, 4 lb. ; alum, 4 lb. ; sulphuric acid, 170° Tw., 11 lb.
Greens : (1) Berry liquor at 114° Tw., 7 pints ; red liquor at 114° Tw., 14 pint ; blue mixture, as below, 7 pints. When cold, add solution of chloride of tin at 1131° Tw., 84 oz. ; white starch, 20 oz. Steam twice for 20 minutes each time ; wash, dry, and finish with 350 pints cold water, 88 lb. white starch, and 4 lb. 6 oz. stearine.
To make the blue mixture, dissolve 22 lb. yellow prussiate, 3 lb. 4 oz. tartaric acid, and the same weight of oxalic acid in 871 pints boiling water.
(2) Cteruleirie Green.—Gum water, 174 qt. ; ca3ruleine, 7 qt.; hisulphite of soda, 14 pint. To be added on using, acetate of chrome at 264° Tw., 3-k pints.
(3) Bark Green.-24 lb. starch, 14 gal. bark liquor at 16° Tw. Boil, and add 9 oz. alum, 12 oz. oxalic acid, 8 oz, tin crystals. When half cold, add 1 lb. 14 oz. tartaric acid, 3 lb. 6 oz. yellow prussiate, 1a pint tin pulp, 4 pint olive oil. After steaming, pass through chrome liquor at 41° Tw.
Wash in clear water, and dry.
(4) Aloes Green.—Chrysammide (the product of chrysammic acid on treatment with ammonia), thickened according to shade with gum water.
After steaming, this colour comes up a rich moss green, which is not affected by boiling water, nor by the madder baths, and is capable consequently of a variety of useful applications. Thus an aloes green ground may be obtained ; iron and alum mordants may be printed on, and the piece may be dyed with alizarine, giving red, purple, chocolate, and black figures, on a green ground.
(5) Green for Blotch Grounde.—Bark liquor at 10° Tw., 4 gal., boiled up with 6 lb. starch. Add alum, 2. lb. ; tartaric acid, 3 lb. ; yellow prussiate of potash, 6 lb.; oxalic acid, 12 oz. ; and tin pulp, gal. After printing, take through a weak bath of bichromate of potash, to raise the colour.
(6) Green for Block Work.—Yellow prussiate, 14 lb., dissolved in very hot water, 3 gal. Mix meantime, in another vessel, water, 1 gal. ; double muriata of tin at 120° Tw., gal.; and gum senegal water, at 6 lb. per gal., 5 gal. Now mix these two liquids by pouring them repeatedly backwards and forwards, and stirring thoroughly. When perfectly mixed, add berry liquor at 10° Tw., 6 gal. ; tartaric acid, 5 lb.; oxalio acid, lf lb., previously dissolved in 24 gal. water; acetic acid, 14 qt. ; extract of indigo, pint.
Greys : (1) Aniline Grey for Calico.—Dissolve 21f oz. cblorate of potash in 6 pints boiling water. When cold, add llf pints gum water, 10f oz. sal ammoniac, 31 lb. chromo-tartrate of potash at 49° Tw., 61 oz. aniline, and 2 lb. 84 oz. tartaric acid. Print on, age for 48 hours at 32° (89° F.), and wash for 1 hour. Lighter shades are produced by increasing the gum. This grey gives a fine ground, and can be submitted to all the operations necessary for slizarine reds, except passing through a salt of tin.
To prepare the chromo-tartrate of potash, 331.- oz. bichrome are dissolved in 54 pints boiling water. When it has cooled down to 43° (110° F.), add gradually 3 lb. 24 oz. tartaric acid in fine powder, avoiding a rise of the temperature.