INDIGO EFFECTS. 5S9

For lighter shades the alum and sugar of lead are proportionately reduced

(See also p. 474.)

No. 14. Brown Resist .—

Catechu .24 lbs.

Sal-ammoniac. 6 ,,

Water . 2 gals.

Acetic acid . 1 gal.

Boil for a quarter of an hour, and add—

Gum water . 7J gals.

Nitrate of copper, at roo° Tw. rj ,,

No. T5. White Resist .—

See Nos. 5 or 6.

The pieces after ageing for seventy-two hours, and dipping to the requiredshade in a vat composed of—Indigo, 120 lbs.; copperas, 135 lbs.; and lime,150 lbs. to 1000 gals, water, are washed, dunged for a quarter of an hour, at160° F., washed again, and dyed up with madder or garancin.

In the other modification of the lazulite style the following whites areused:—

No. 16. Lazulite White (Bloch ).—

Lime-juice, at 30° Tw. 3$ gals.

Water . £ gal.

Sulphate of copper. 9 lbs.

Pipe-clay.48 lbs.

Lime-juice, at 30° Tw. if gals.

Separately thickened with gum Senegal before adding it to the rest. (See

also p. 474.)

No. 17. Ditto for Machine .—

Lime-juice, at 42° Tw. 2 gals.

Sulphate of copper . 4 lbs.

Nitrate of copper, at 100° Tw. 3 pints 4 ozs.

Previously thickened with starch . ij lbs.

For blacks, see Style I., Nos. 6 and 7.

In this style the lazulite or neutral whites are first printed in, andwhen perfedtly dry the other reserve colours are printed over them. If a whiteunder the blue alone is wanted, Nos. 5 and 6 (of this style) may also beprinted. The pieces are then aged, dyed blue, washed, dunged, dyed withmadder or garancin, soaped, and washed. The effedt may then be furtherdiversified by blocking in steam, spirit, or pigment colours.

It must be remarked that indigo, in whatever manner applied, though ityields fast colours, is always dull, and never produces a pleasing effedt uponcalico. Its use is, therefore, ordinarily confined to the lower qualities ofprinted goods.

The three following patterns are a combination of indigo with other colours.In the first stage we see a dark vat blue, on which a lighter blue design hasbeen “reserved.”

In the second stage a discharge has been printed on, so that the patternnow shows a design both in light blue, and in white upon the original darkblue ground.