This section is from the book "Cyclopedia Of Painting", by George D. Armstrong. Also available from Amazon: Cyclopedia of Painting.
In 3 pints of water boil 1/2 pound of logwood until the decoction is of a dark red color, then add 1/2 ounce of salts of tartar. The wood is to receive three or four coats of this liquid, which must be used whilst boiling hot, each coat being allowed to dry thoroughly before another is applied. Veins may be formed in this with the black stain, using grainers' combs or other implements, but if this is done, the work is removed from mere staining and becomes an imitation of graining. Immerse 1/4 pound red sandalwood and 1/2 pound of potash in 1 gallon of hot water. When the color of the wood is extracted, 2 1/2 pounds of gum shellac are to be added, and dissolved over a quick fire. The mixture may then be used over the stain above described.
 
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