White Ink For Writing On Black Paper





Having carefully washed some egg-shells, remove the internal skin, and

grind them on a piece of porphyry. Then put the powder into a small

vessel of pure water, and when it has settled at the bottom, draw off

the water, and dry the powder in the sun. This powder must be

preserved in a bottle; when you want to use it, put a small quantity

of gum ammoniac into distilled vinegar, and leave it to dissolve

during the night. Next morning the solution will appear exceedingly

white; and if you then strain it through a piece of linen cloth, and

add to it the powder of egg-shells, in sufficient quantity, you will

obtain a very white ink.





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