694. Yellow Ink.—Dissolve gamboge in a solution of gum-arabic.
695. Scarlet Ink.—Dissolve vermilion in a solution of gum-arabic.
696. Red Ink.—Boil one ounce of Brazil wood in half-a-pint of water for a quarter of an hour; add to the decoction three drachms of gum-arabic, and an ounce of alum.
697. Green Ink.—Verdigris, two ounces; cream of tartar, one ounce; water, half a pint; boil till reduced to one half, and filter.