This technique was invented by Aloys Senefelder in 1796 in Germany. This process takes advantage of the fact that water and fatty subtances are incompatible on flat limestones. With this mount, drawing directly is made possible with great fluidity. The artist carries out his drawing on the stone by using pencils and lithographic inks. The chemical concoction, made out of nitric acid and gum arabic, fixes the drawing on the stone. The latest is moisturized and finally inked with a roll. The ink will only stick on drawn surfaces. For convenience reasons, zinc and aluminum plates can replace stones.
"Jour de fête", lithograph by Maurice Estève, 1952