He made many attempts with his pupils to produce drawings on stones, but presumably his impressions were not successful, for those stones that I saw afterward at Herr Schulrath Steiner's had been etched first and the spaces then engraved away very deeply with all sorts of steel instruments, after the manner of wood-cuts, so that they might properly be called stone-cuts in relief. He had these stones printed in the Schul-fond's book-printery, and I hear that the impressions were very good. I saw none myself. However, Professor Schmidt's experiments were the means of making me acquainted with Herr Schulrath Steiner, who encouraged me so much that I conceived many ideas in order to fulfill his wishes, so that at last the art of printing from stone achieved its present honorable position. Herr Schulrath Steiner, an intimate friend of Professor Schmidt, was director of the Schul-fond's printery. As such he was concerned with many prints. Herr Schmidt's idea of publishing stone-etched pictures of poisonous plants for school use was approved by him; and as the attempts did not satisfy him, he decided to turn to me. At that time the Schul-fond was to print some church songs. This gave him the opportunity of visiting me. He asked me if the musical notes could not be so etched or cut in relief in stone that they could be made up with ordinary book-types and thus printed in the ordinary book-presses. I promised to try it. However, the necessary deep engraving of the spaces was too laborious, so that it would have been easier to do it in wood. As an expedient we printed the text first with ordinary types in the book-press and then printed in the music with stones in the stone-press. Meantime I tried to attain our purpose in other ways, connected with some of my early experiments. My best success was with the following method. On a stone polished with sand I painted a layer, equal to two or three card-thicknesses, of burned, finely powdered gypsum, butter, and alum, mixed with a proper amount of water. As soon as it was dry I inscribed the music with steel needles of various sizes on the surface of the stone, which was of a somewhat dark, almost gray color, so that I could see it more easily through the soft, white mass. Having finished the drawing I took warm sealing-wax smeared on wood, and applied it to the stone while it was warm with a hand-press. After cooling, the white mass was fast to the sealing-wax and quite loose from the stone, and it was scrubbed away clean with water and a brush, after which the drawing appeared on the wood in elevated wax extremely clear and clean, like a wood-cut. The spaces were so deep that the plate could be printed in regular book-printing manner.