#544. Ink, Indelible

- By Formula pot


  • Refer procedure


o four drachms of lunar caustic, in four ounces of water, add 60 drops of nutgalls, made strong by being pulverized and steeped in soft water. The mordant, which is to be applied to the cloth before writing, is composed of one ounce of pearlash, dissolved in four ounces of water, with a little gum arabic dissolved in it. Wet the spot with this; dry and iron the cloth; then write.