Typo: A Monthly Newspaper and Literary Review, Volume 4
Iridescent Paper.—
Iridescent Paper.—
Boil in water eight parts (by weight) of nutgalls, five parts of sulphate of iron, four each of sal ammoniac and sulphate of indigo, and one-eighth part of gum arabic. Wash the paper in this decoction, and then expose it to the fumes of ammonia until the desired result is reached.