MORDANTS. 531

2. Red Cotton Spirit.

Hydrochloric acid, as before.6 gals.

Nitric acid.I gal.

Water .1 „

Tin.6 lbs.

Work as before. This spirit is more adapted for the cotton-warps of claretsand browns.

3. Red Cotton Spirit.

Hydrochloric acid, at 32° Tw.6 gals.

Nitric acid, at 64° Tw.2 ,,

Tin.10 lbs.

Work as above.

4. Red Cotton Spirit.

Hydrochloric acid, at 35° Tw.8j gals.

Nitric acid, at 64° Tw...il ,,

Tin sufficient to bring up the specific gravity to 54 0 Tw.

Bichromate of potash .1 oz.

5. Red Cotton Spirit.

Hydrochloric acid, at 32 0 Tw.3 gals.

Nitric acid, at 64° Tw.1 gal.

Water .1 ,,

Tin, 2 ozs. per lb. of the. mixed acid.

In this case, exceptionally, the tin is not used in the bar, but granulated, andadded in very s'mall quantities at a time.

6. Red Cotton Spirit.

Hydrochloric acid, at 32° Tw..6 gals.

Nitric acid, at 64° Tw.1 gal.

Tin, grain-bar .10 lbs.

Barwood Spirit.

Hydrochloric acid, at 32° Tw.5 gals.

Nitric acid, at 64° Tw.1 gal.

Tin, 1 oz. per lb. of mixed acids.

Plum Spirit.

Hydrochloric acid, as above.6 gals.

Nitric acid, as above. 1 gal.

Tin, i£ ozs. per lb. of mixed acidsPink Spirit, with peach-wood or cotton ; see “ Yellow Spirit.”

“ Solution of Tin.”

These preparations, called often simply “ Solution,” are used for similarpurposes to red cotton spirits. They are generally a little stronger.

Hydrochloric acid at 32 0 Tw.6 gals.

Nitric acid at 64° Tw.ij gals.

Water . 1 gal.

Tin, in rods.. 7 lbs.

2 M 2