VI.—Copying.—Take 6 parts of pulverized bichromate of potash, mixed with 10 parts of acetic acid and 240 parts of liquid extract of logwood, and add a pulverized mixture of 35 parts of alum, 20 parts of sal sorrel, and 20 parts mucilage. Mix well. For use, 1 part of this paste is mixed with 4 parts of hot water.
Purple Ink.
II. (Normandy).—To 12 pounds of Campeachy wood add as many gallons of boiling water. Pour the solution through a funnel with a strainer made of coarse flannel, or 1 pound of hydrate, or acetate of deutoxide of copper finely powdered (having at the bottom of the funnel a piece of sponge); then add immediately 14 pounds of alum, and for every 340 gallons of liquid add 80 pounds of gum arabic or gum senegal. Let these remain for 3 or 4 days, and a beautiful purple color will be produced.
Red Ink.
Inks For Shading Pen.
| I.— | Water-soluble nigrosin | 1 part |
|---|---|---|
| Water | 9 parts | |
| Mucilage acacia | 1 part | |
| II.— | Paris violet | 2 parts |
| Water | 6 parts | |
| Mucilage acacia | 2 parts | |
| III.— | Methyl violet | 1 part |
| Distilled water | 7 parts | |
| Mucilage acacia | 2 parts | |
| IV.— | Bordeaux red | 3 parts |
| Alcohol | 2 parts | |
| Water | 20 parts | |
| Mucilage acacia | 2 parts | |
| V.— | Rosaniline acetate | 2 parts |
| Alcohol | 1 part | |
| Water | 10 parts | |
| Mucilage acacia | 2 parts |
Silver Ink.
II.—Make as gold ink, but use silver leaf or silver bronze powder.
| III.— | Oxide of zinc | 30 grains |
|---|---|---|
| Mucilage | 1 ounce | |
| Spirit of wine | 40 drops | |
| Silver bronze | 3 drachms |
Rub together, until perfectly smooth, {417} the zinc and mucilage, then add the spirit of wine and silver bronze and make up the quantity to 2 ounces with water.