630

DYEING AND CALICO PRINTING.

Boil and strain ; exhaust the residue with further portions of water, mix theextra&s, concentrate to ioj pints; cool and let settle. In the clear liquor

dissolve—

Oxalic acid. 5 ozs.

Tin crystals. 2J „

Thicken with—■

Wheat starch. J lb.

White glue . } „

Print, steam at igo° F., and rinse.

No. 33. Scarlet for Woollen Yarn .—

The mixture is the same as for ponceau, but from J to xj oz. of extradt offustic, previously dissolved in water, is added.

Silks,

There is in many cases a difficulty in preserving the whites—grounds orfigures—clean, as the silk has in itself a considerable attradtion for colours.Before the printing the goods are boiled for two hours with soap of a finequality, in the proportion of r lb. of soap to 4 lbs. of material. They are thenwell rinsed in pure water, and dried. Every shade of colour can be producedon silk by the steaming process, with the advantage that the grounds remainunsullied. The goods are first prepared with tin, being steeped for four hoursin sulpho-muriate of tin, at 2° Tw. After this process the silk is washed inclean water, and dried.

No. 1. Snlpho-Muriate of Tin , for Silks. —Dissolve in water—

Tin crystals . 1 lb.

And add—■

Sulphuric acid, at 170° Tw. 1 lb.

And reduce with water to 2° Tw.

No. 2. Blacks .—

Logwood liquor, at 8° Tw. 2 gals.

Iron liquor, at 10° Tw. .. i quart.

Flour . 1 lb.

British gum, light .. . 1 „

Boil, and add—

Yellow prussiate. 6 ozs.

When cold add—

Sulphate of copper . 2 ozs.

Muriate of iron, at 80° Tw. 1 pint.

Nitrate of iron, at 80° Tw. ,. .... .. .. 1 gill.

No. 3. Black , for Grounds .—•

Logwood liquor, at 8° Tw. 2 gals.

Acetate of copper (liquid), at 40° Tw, .. .. ,. 1 pint.

Red liquor, at 18 0 Tw. ,, . .. .. 32 ozs.

Starch. 2f lbs.

Boil, and after cooling add—

Nitrate of iron, at 8o° Tw.. .. .. 1402s,