STEAM COLOURS. 607

No. 28. Green for Block-Work .—

Hot water . 6 gals.

Yellow prussiate .. 28 lbs.

Mix meantime in a separate vessel—

Water . 2 gals.

Double muriate of tin, at 120° Tw. 1 gal.

Gum Senegal water (6 lbs.). 10 gals.

Mix these two solutions by pouring backwards and forwards, and stirring verybriskly. When the whole is perfectly incorporated and clear add—

Berry liquor, at io° Tw.12 gals.

Tartaric acid. 10 lbs.

Oxalic acid (dissolved in 5 gals, water). 2j ,,

Acetic acid . .. 3 quarts

Extradt of indigo. i\ gills.

No. 29. Green {inferior quality ).—

Starch .12 lbs.

Bark liquor, at 16 0 Tw... 8 gals.

Boil, and add—

Alum . 3 lb s.

Oxalic acid .. . i lb.

Tin crystals. 1 a

When nearly cold add—

Tartaric acid. 10 lbs.

Yellow prussiate.20 „

Tin pulp. 1 gal.

No. 30. Green for Blotch Grounds .—

Bark liquor, at 10° Tw. 8 gals.

Starch . 12 lbs.

Boil together, and add—

Alum . 5 lbs.

Yellow prussiate. .. . > 12 „

Tartaric acid. 6 ,,

Oxalic acid. lb.

Tin pulp. & gal.

Steam-greens after printing are frequently brightened, or “raised” as it istechnically called, by passing through a weak bath of bichrome.

No. 30 a. Aloes Green .—

Chrysammide (see p. 417) .. ..2 grms.

Gum-water, according to shade.

After steaming, this mixture gives a fine moss-green, not affedted by boilingwater, or madder and garancin baths. Thus a variety of modifications canbe produced. A design may be printed by this means in deep green ; a greenground may be obtained. Iron and alumina mordants may then be printedon, and the pieces dyed in the madder or garancin beck. The result will thenbe —in the one case, a white ground, with green, red, purple, chocolate, andblack figures; or, in the other case, a green ground with a design in the fourlatter colours, or any of them.