Plan No. 474. Green Ink Powder
Green ink is a novelty, and for that reason many people like to use it. He made the powders for green ink as follows:
Green anilin, 1 dram; dextrin, 4 drams. To use, dissolve in hot water, using more or less of the powder as darker or lighter shades of the green are desired.
Very easy and cheap to make; very easy and profitable to sell.