1704. Blue.—1. Immerse for some time in a dilute solution of sulphate of indigo—partly saturated with potash—and it will be fully stained. 2. Steep in a strong solution of sulphate of copper.
1705. Green.—1. Dip blue-stained articles for a short time in nitro-hydrochlorate of tin, and then in a hot decoction of fustic. 2. Boil in a solution of verdigris in vinegar until the desired color is obtained.
1706. Red.—Dip the articles first in the tin mordant used in dyeing, and then plunge into a hot decoction of Brazil wood—half a pound to a gallon of water—or cochineal.
1707. Steep in red ink until sufficiently stained.