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.