The plain transfer paper is prepared in the same manner, leaving out the barium sulphate and the coloring matters.
Preparation of the Silver Paper.—Immerse the paper for two minutes in a solution of—
| Sodium chloride (common salt, dry) | 2 parts |
| Lemon juice | 1 part |
| Water | 100 parts (filter) |
When dry and wanted for use, sensitize the salted paper by floating for one minute on—
| Silver nitrate | 8 parts |
| Nitric acid | 0.1 part |
| Water | 100 parts |
On its removal from the silver bath, sponge the paper between sheets of blotting paper and hang it up to dry.
| ENCAUSTIC FOR SINGLE TRANSFER PROOFS. | |
|---|---|
| White wax | 25 parts |
| Mastic | 3 parts |
| Turpentine | 100 parts |
Dissolve by heat, first the mastic, then the wax, and keep for use in a large mouthed vial.
| MATT VARNISH. | |
|---|---|
| Sandarac | 6 parts |
| Mastic | 6 parts |
| Lavender oil. | 0.5 parts |
| Ether | 100 parts |
When dissolved, add 30 parts of benzine. The opacity of the film varies with the quantity of benzine added; by excess the varnish dries transparent.