- Impregnate with nitro-hydrochlorate of tin, and then digest with heat in a strained decoction of fustic.
- Steep for twenty-four hours in a strong solution of the neutral chromate of potash, and then plunge for some time in a boiling solution of acetate of lead.
- Boil the articles in a solution of alum—a pound to half a gallon—and then immerse for half an hour in the following mixture:—Take half a pound of turmeric, and a quarter of a pound of pearl-ash; boil in a gallon of water. When taken from this, the bone must be again dipped in the alum solution.
Avoid Yourself What You Think Wrong in Your Neighbour.
1422. Horn
Horn must be treated in the same manner as bone and ivory for the various colours given under that heading.
1423. Imitation of Tortoiseshell
First steam and then press the horn into proper shapes, and afterwards lay the following mixture on with a small brush, in imitation of the mottle of tortoiseshell:—Take equal parts of quicklime and litharge, and mix with strong soap-lees; let this remain until it is thoroughly dry, brush off, and repeat two or three times, if necessary. Such parts as are required to be of a reddish brown should be covered with a mixture of whiting and the stain.