STEAM COLOURS.

605

No. 16 c. Brown Standard , referred to in Nos. 16 a and b .—

Catechu, cubic .25 lbs.

Water. 8 gals.

Boil eight hours, and add—•

Acetic acid. 2j quarts

Then dissolve—

Sal-ammoniac . 10 lbs.

In— Water . i£ gals.

Mix both liquids well; let settle, and thicken the clear liquor with gum-water.No. 17. Buff (Chamois). —

Madder liquor . 3 gals.

Bark liquor, at 10° Tw. 4 quarts

Red liquor, at 14 0 Tw. 2 gals.

Starch. 7 lbs.

Boil, and add—

Crystals of tin . 2 ozs.

No. 18. Chocolate (for Cylinder-Work ).—

Logwood liquor, at 12 0 Tw. 3 gals.

Sapan liquor, at 12 0 Tw. 2 „

Nitrate of alumina (see below). 1 gal.

Bark liquor, at 12 0 Tw. £ „

Water. 4 gals.

Starch . 17 lbs.

Boil, and then add—

Chlorate of potash . i lb.

Red prussiate. lbs.

No. ig. Nitrate of Alumina .—

Boiling water. 8 gals.

Nitrate of lead, crystals .24 lbs.

Alum .24 „

Carbonate of soda, crystals . 5 ,,

Stir till dissolved; let settle, and draw off the clear liquid for use.

No. 20. Another Chocolate .—

Sapan liquor, at g° Tw.

Nitrate of alumina .

Logwood liquor, at 12” Tw.

Yellow prussiate. ..

Red prussiate. .

Chlorate of potash.. ..

Starch ■. .

This formula requires well boiling and mixing.No. 21. Another Chocolate. —

Sapan liquor, at 8° Tw.

Red liquor, at 16 0 Tw.

Nitrate of alumina .. .. .. ..

Logwood liquor, at 18° Tw.

Bark liquor, at 18° Tw. .. .. ..Starch .

12 quarts3 n6 „

6 ozs.

6 >.

6 „

9 lbs.

5 g^s.

6 quarts6 „

2 gals.

3 quarts16 lbs.