RED TO PURPLE, GREEN, AND CRIMSON.
Slice a little red cabbage; pour boiling water upon it, and when cold decant the clear infusion, which divide into three wine-glasses; to one, add a small quantity of solution of alum in water; to the second, a little solution of potash in water; and to the third, a few drops of muriatic acid. The liquor in the first glass will assume a purple colour, the second a bright green, and the third a rich crimson.