BLACK.
| 600 |
lbs.
| flint batch, |
| 40 |
" |
manganese, |
| 46 |
" |
oxide of iron. |
LIGHT EMERALD GREEN.
| 200 |
lbs.
| flint batch, |
| 2½ |
" |
iron filings, calcined, |
| ½ |
" |
antimony. |
ORIENTAL GREEN.
| 110 |
lbs.
| flint batch, |
| 1 |
" |
oxide of uranium, |
| 2 |
oz. |
carbonate of copper. |
OPAL.
| 500 |
lbs.
| batch, |
| 60 |
" |
phosphate of lime, |
| 4 |
" |
arsenic, |
| 20 |
" |
nitrate of soda. |
Said to turn without cooling.
William Gillender, of England, gives the
following receipt for Bohemian Red, or Ruby:--
Sand, 62 lbs.
Lead, 76 "
Nitre, 22 "
Antimony, 8 oz.
Manganese, 3 "
|
Add one ounce of purple of Crassus
to every eighty pounds of the above batch.
WAX RED.
| To 15 |
lbs.
| flint batch add |
| 1 |
" |
raw brass, |
| ¾ |
" |
crocus martus
[purple iron oxide,
Fe2O3]. |
This he says is very good.
|
