Important: Safety Warning
This page describes practices involving highly flammable materials in ways that create a serious risk of fire or explosion.
This page describes trade processes that use dangerously toxic materials such as cyanide solutions, mercury amalgams, or strong acids. These processes require training, equipment, and precautions far beyond what the text describes.
This information has been left in for historical purposes but should not be acted upon.
Home › Recipes › Luminous Ink that will shine in the Dark
Luminous Ink that will shine in the Dark
To half an ounce of sulphuric ether, in a phial, add one drachm of phosphorus; cork the phial close and let it remain two or three weeks, often shaking it. Afterwards any words may be written with it on dark coloured paper, and if carried into a dark room, will appear very bright.