Lithograph

This is a printing process based on the fact that oil and water don't mix. It originated in Solnhofen, Germany where in 1798, Alois Senefelder discovered that when a greasy crayon was used to draw on a smooth limestone surface and then the surface was covered with water and then with ink, the ink would only stick to the stone where the greasy crayon had drawn marks. Paper could then be pressed on this surface and a print made of the drawing The process was soon refined and rapidly became a favorite printing method of and for artists. It was used by such greats as Goya, Daumier, Géricault, Delacroix, Degas, Munch, Toulouse-Lautrec. In the twentieth century it has been used by such artists as Picasso and Miro.