Red can be made by a solution of dragon’s blood in spirits of wine. This stain is to be laid on the wood boiling hot, and before it dries it should be laid over with alum water.
Blue. Ivory may be stained blue thus: Soak the ivory in a solution of verdigris and nitric acid, which will make it green, then dip it into a solution of pearlash boiling hot, and it will turn blue.
To stain ivory, black, the same process as for wood may be employed.
Purple may be produced by soaking the ivory in a solution of sal-ammoniac and four times its weight of nitrous acid.
TO PRODUCE A CRYSTALLINE SURFACE
ON PAPER, WOOD AND GLASS.
A concentrated solution of salt, acetate of soda, Epsom salt, etc., mixed with Dextrine in the cold, and laid on thinly as possible, with a broad, soft brush, and allowed to dry. The paper must be sized first, otherwise the formation of crystals will be irregular, on account of the absorption of the liquid. The coating on glass is rendered adhesive by brushing it with a solution of shellac in alcohol.
Colored glass arranged in this way makes a pretty transparency.
A beautiful adhesive coating of pearly lustre upon paper produces a very handsome card.