II.—Triturate together 1 pint pine soot and 2 pints Prussian blue with a little glycerine, then add 3 pints gum arabic and sufficient glycerine to form a thin paste.
Blue Stencil Inks.
| I.— | Shellac | 2 ounces |
|---|---|---|
| Borax | 1 1/2 ounces | |
| Water | 10 ounces |
Boil together until 10 ounces of solution is obtained. The coloring:
| Prussian blue | 1 ounce |
| China clay | 1/2 ounce |
| Powdered acacia | 1/2 ounce |
Mix thoroughly and gradually incorporate the shellac solution.
| II.— | Prussian blue | 2 ounces |
|---|---|---|
| Lampblack | 1 ounce | |
| Gum arabic | 3 ounces | |
| Glycerine, sufficient. | ||
Triturate together the dry powders and then make into a suitable paste with glycerine.
Indelible Stencil Inks.
II.—Sulphate of manganese, 2 parts; lampblack, 1 part; sugar, 4 parts; all in fine powder and triturated to a paste in a little water.