Recipes for Preserving Gold Embroidery Thread
RECIPES FOR PRESERVING GOLD.
We give here two recipes, which may be found serviceable. They are from different sources; the first is a very old one. They may preserve gold for a certain time.
1. Isinglass dissolved in spirits of wine and brushed over the thread or braid, which should be hung over something to dry, and not touched with the hand.
2. Spirits of wine and mastic varnish mixed very thin and put on in the same way with a brush.