Mordants: 1 oz. sulphuric acid, 3 oz. Glauber salts. Boil 1 hour.
NO. 13. DARK PERSIAN BLUE
Dark Persian blue
Dissolve 1 oz. of dark blue in 1 pint of water.
Dissolve 1/4 oz. of green in 1 pint of water.
Use 10 tablespoonfuls of dark blue dye, 6 tablespoonfuls of green dye to 6 yds. of cloth.
Mordants: Same as in No. 12.
NO. 14. GOBELIN BLUE
Gobelin blue