The design is drawn or painted on the polished, or grained, flat surface of a stone, usually Bavarian limestone, with a greasy crayon or ink. The design is chemically fixed on the stone with a weak solution of acid and gum arabic. In printing, the stone is flooded with water which is absorbed everywhere except where repelled by the greasy ink. Oil-based printer's ink is then rolled on the stone, which is repelled in turn by the watersoaked areas and accepted only by the drawn design. A piece of paper is laid on the stone and it is run through the press with light pressure, the final print showing neither a raised nor embossed quality but lying entirely on the surface of the paper. The design may be divided among several stones, properly registered, to produce, through multiple printings, a lithograph in more than one color. A transfer lithograph (French, autographie) employs the same technique, but the design is drawn on specially prepared transfer paper with a lithographic crayon and is later mechanically transferred to the stone. A zincograph is the same as a lithograph, but employing a zinc plate rather than a stone.