Young's Demonstrative Translation of Scientific Secrets / Or, A Collection of Above 500 Useful Receipts on a Variety of Subjects

by Daniel Young

45. GOLDEN INK

Take some white gum arabic, reduce it to an impalpable powder in a brass mortar, dissolve it in strong brandy, and add a little common water to render it more liquid, provide some gold in a shell, which must be detached in order to reduce it to a powder, when this is done moisten it with the gum solution, and stir the whole with a small hair brush, or your finger, then leave it for a night that the gold may be better dissolved. If the composition becomes dry during the night, dilute it with more gum water in which a little saffron has been infused, but take care that the gold solution be sufficiently liquid to flow freely in a pen; when the writing is dry polish it with a dry tooth.