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Green Ink


Dissolve 180 grains Bichromate of Potash in one fluid ounce

of Water; add while warm one-half ounce Spirits of Wine, then decompose

the mixture with concentrated sulphuric acid until it assumes a brown

color; evaporate this liquid until its quantity is reduced one-half,

dilute it with two ounces distilled water, filter it, add one-half

ounce Alcohol, followed by a few drops of strong sulphuric acid; it is

now allowed to rest, and after a time it assumes a beautiful green

color. Add a small quantity Gum Arabic and it is ready for use.



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