The Progress of the Marbling Art, from Technical Scientific Principles / With a Supplement on the Decoration of Book Edges

by Josef Halfer

THE GRAY MARBLE.

To produce this the following colors are necessary, black, dark purple, light bluish green, gall-water and a mixture of black with sprinkling water, by which the ground shade, gray, is obtained. A lighter or darker gray is obtained by adding more or less sprinkling water to the ground color.