| Draw onto the plates with lithographic pencils, crayons, tusche, and process with a single solution. |
| The grease in the lithographer's crayon or tusche will repel water during the lithographic process. |
| The most useful of all inks for writing or drawing on stone come under the name tusche. |
| Tusche is the drawing ink, to draw the image on the stone. |
| The surface is then chemically treated and dampened so that it will accept ink only where the crayon or tusche has been used. |
