6g2

DYEING AND CALICO PRINTING.

Black .—

Gum tragacanth. 12 ozs.

Starch . 1 lb.

Glue.• .. .. 8 ozs.

Boil up to a paste in water, and add—

Iron liquor . 3 litres.

Nitrate of iron . 1 litre.

Make up the whole with Water to 6 litres.

Discharge White .—

Gum tragacanth. 12 ozs.

Starch .. .. .. .. 1 lb.

Glue. 8 ozs.

Boil up to a paste, and add—

Citric acid . 2 lbs.

The pieces are then aged, dunged, rinsed, and dyed up in madder, taking10 lbs. madder and 2 lbs. chalk per 60 yards. After dyeing, the goods arepassed through a chlorine bath, taking 1 lb. chloride of lime for the abovequantity. The pieces are then rinsed, passed through muriatic sours at£° Baume, and rinsed again. If, after rinsing, the goods are still acid, theyare passed through a chalk bath, and rinsed again.

Dark Spirit Violet on Cotton Warps.

First Method, with Logwood. —Soften J lb. gum tragacanth in water, andlet it swell up to a jelly. Meantime dissolve £ lb. logwood extradt in boilingwater. Mix both solutions, make them up to 10 litres, boil, and stir till cold.Into the mixture stir £ lb. of crystallised bichloride of tin (perchloride), andadd finally i£ ozs. bichromate of potash in powder. The mixture is ready foruse after being well stirred. The printed yarns are exposed to the air for aday, and are then rinsed without steaming.

Second Method, with Aniline Colours. —Soften 2 lbs. casein in water at167° F., adding £ lb. liquid ammonia. Dissolve 1 oz. aniline violet and £ oz.crude magenta in water; mix with the casein, make up to 10 litres, and add4 ozs. powdered bichromate of potash. The mixture can be used immediatelyfor printing. The printed yarns are dried in the sun, and rinsed. For a darkershade more bichromate is required.

Blackley Orange is the trade name of a coal-tar colour manufactured bythe well-known firm Levinstein and Sons, of Manchester. It is easily solublein hot water. For printing on woollens or silks a concentrated solution inwater is employed, without the addition of acids or mordants. In dyeing itis applied at a boiling-heat, with a slight addition of tartaric or acetic acid, orof the chloride of zinc. Large additions of acid destroy the colour. Blackleyorange resists the adtion of the atmosphere better than most coal-tar colours,and its brightness is not injured by soap-lyes, warm or cold.

Dale’s Patent Process for Printing and Dyeing with Aniline Colours.

First Method, applicable to Goods which are Printed in all Mauve, or haveonly very little Black. —The goods are bleached as if for the best madder-work, and printed with the following mixture. In machine-printing particularattention must be paid to have the colour-boxes quite clear, and especially free