Tin Foils for Capsules.—
| I Per cent | II Per cent | |
|---|---|---|
| Tin | 20 | 22 |
| Lead | 80 | 77 |
| Copper | — | 1 |
Tin Foils for Wrapping Cheese, etc.—
| I Per cent | II Per cent | III Per cent | |
|---|---|---|---|
| Tin | 97 | 90 | 92 |
| Lead | 2.5 | 7.8 | 7 |
| Copper | 0.5 | 0.2 | 1 |
Tin Foils, for Fine Wrapping, I and II; for Tea Boxes, III.—
| I Per cent | II Per cent | III Per cent | |
|---|---|---|---|
| Tin | 60 | 65 | 40 |
| Lead | 40 | 35 | 58.5 |
| Copper | — | — | 1.5 |
Imitation Gold Foils.—
| Deep gold Per cent | Pure gold Per cent | Pale gold Per cent | |
|---|---|---|---|
| Copper | 84.5 | 78 | 76 |
| Zinc | 15.5 | 22 | 14 |
| Deep gold Per cent | Deep gold Per cent | Gold Per cent | |
| Copper | 91 | 86 | 83 |
| Zinc | 9 | 14 | 17 |
| reddish | dark yellow | pale yellow |
Imitation Silver Foil.—Alloy of tin and zinc: harder than tin and softer than zinc: Zinc, 1 part; tin, 11 parts.
To Attach Gold Leaf Permanently.—Dissolve finely cut isinglass in a little water, with moderate heat, which must not be increased to a boil, and add as much nitric acid as has been used of the isinglass. The adhesive will not penetrate the cardboard or paper.