"The three plants form the basis for primary colors. They were often combined to make other shades like green, orange, purple ...

Madder raised in the non-calcareous soil of Alsace, gives a color ol no permanency or beauty; but when raised in soil containing more than ninety per cent, of lime earth, the roots give faster and ...

We have been informed that there grows wild, in Florida, a plant, whose roots, when eaten by hogs, colors their bones red. Such is the effect of madder. Doubtless this is an indigenous species ...