GERMAN SHEET GLASS.
| 400 | lbs. | silex, |
| 130 | " | soda, |
| 126 | " | hydrate of lime, |
| 4 | " | charcoal, |
| 7 | " | nitrate of soda, |
| 4 | " | arsenic, |
| 1 | " | manganese. |
Gold-colored spangles may be diffused through the glass by mixing gold-colored talcs in the batch.
AGATE.
| To | 150 | lbs. | flint batch add |
| 10 | " | phosphate of lime, | |
| 6 | " | arsenic. | |
BLACK.
| 600 | lbs. | flint batch, |
| 40 | " | manganese, |
| 46 | " | oxide of iron. |
LIGHT EMERALD GREEN.
| 200 | lbs. | flint batch, | |
| 2 | ½ | " | iron filings, calcined, |
| ½ | " | antimony. |
ORIENTAL GREEN.