These are for writing on lithographic stones or plates:
I.—Mastic (in tears), 8 ounces; shellac, 12 ounces; Venice turpentine, 1 ounce. Melt together, add wax, 1 pound; tallow, 6 ounces. When dissolved, add hard tallow soap (in shavings), 6 ounces; and when the whole is perfectly combined, add lampblack, 4 ounces. Mix well, cool a little, and then pour it into molds, or upon a slab, and when cold cut it into square pieces.
II. (Lasteyrie).—Dry tallow soap, mastic (in tears), and common soda (in fine powder), of each, 30 parts; shellac, 150 parts; lampblack, 12 parts. Mix as indicated in Formula I.
Marking Or Labeling Inks:
Black Marking Inks.—
| I.— | Borax | 60 parts |
|---|---|---|
| Shellac | 180 parts | |
| Boiling water | 1,000 parts | |
| Lampblack, a sufficient quantity. | ||
Dissolve the borax in the water, add the shellac to the solution and stir until dissolved. Rub up a little lampblack with sufficient of the liquid to form a paste, and add the rest of the solution a little at a time and with constant rubbing. Test, and if not black enough, repeat the operation. To get the best effect—a pure jet-black—the lampblack should be purified and freed from the calcium phosphate always present in the commercial article to the extent, frequently, of 85 to 87 per cent, by treating with hydrochloric acid and washing with water.
II.—An ink that nothing will bleach is made by mixing pyrogallic acid and sulphate of iron in equal parts. Particularly useful for marking labels on bottles containing acids. Varnish the label after the ink is dry so that moisture will not affect it.
Colored Marking Inks:
Eosine Red.—