Important: Safety Warning
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.
Bright green
Proceed as before to produce a yellow; but instead of aquafortis add as much of the vitriolated indigo as will produce the desired color.
Another Method.
To 3 pts. of the strongest vinegar add 4 oz. of the best verdigris, ground fine, oz. of sap-green, and oz. of indigo. Proceed in straining as before. and aquafortis, and keep it lukewurm until it has struck through.
Purple. To 2 lbs. of chip logwood and lb. of Brazil-dust add 4 galls. of water. Put in the veneers, and boil them well; then add 6 oz. of pearlash and 2 oz. of alum; let them boil 2 or 3 hours every day, till the color has struck through.
Fine blue. Into 1 lb. of oil of vitriol in a glass bottle put 4 oz. of indigo, and proceed as before directed.
To Stain Paper or Parchment.
Yellow. Paper may be stained a beautiful yellow by the tincture of turmeric formed by infusing an oz. or more of the root, powdered, in a pint of spirit of wine. This may be made to give any tint of yellow, from the lightest straw to the full color, called French yellow, and will be equal in brightness even to the best dyed silks. If yellow be wanted of a warmer or redder cast, anatto or dragon's blood must be added. The best manner of using these, and the following tinctures, is to spread them even on the paper or parchment, by means of a broad brush, in the manner of varnish.