When I saw before me the first successful impressions from a stone, and conceived the plan of making the invention useful for myself, I did not think that it would demand the greatest part of my life. Rather, because it seemed to be a cheap process, I considered it merely a first step toward putting me into a position where I would be able to make inventions far more useful and important. I must, however, count myself fortunate among thousands, because my invention received such thorough recognition during my lifetime, and because I myself was able to bring it to a degree of perfection such as other inventions generally attained only after many years and long after the inventor himself was dead. Herr von Manlich, the Director of the Royal Gallery, has had his skilled pupils, Strixner and Pilotti, copy many collections in the Royal Drawing Cabinet (Königliche Zeichnungs Kabinett), and many of these sheets are so good that competent critics have declared them to be perfect facsimiles. But on the whole the publication of the Royal Gallery of Paintings is still more excellent and has aroused general attention, which would be even greater if the printers had been as expert as the artists were. Many of these pages would leave nothing to be desired if the pictures appeared on the paper in perfection equal to the perfection of the drawings on the stone. The method used for these illustrations is the crayon method, with one or more tint plates. It is the easiest method for the artists because it demands little previous experience. To give it its correct emphasis, however, one must know especially how to get the best effect out of the tint plates. If this is done just right, and if, of course, the drawing bears the impress of a masterly hand, and if the printer understands his art, the impression will be perfectly like an original drawing, so that the most skilled etcher in copper hardly can attain the same effect. Therefore this method, which has the further advantage of being a quick one, is excellently well adapted for copying paintings. Hereby I wish to express my deepest gratitude publicly to the worthy Herr Direktor von Manlich and his industrious pupils for the service they have done for the fame of lithography by utilizing my inventions. To their labors, as well as to those of Herr Professor Mitterer, is due the ever-growing sympathy and interest of the public. Herr Mitterer now has attained such perfection, especially in the simple crayon method, that many of his productions probably will remain the _non plus ultra_ of this method. Lithography also owes to his unresting energy the triumph of having been become the mother of many useful works of instruction, which are so cheap that they only require the active work of a good art-dealer or book-dealer to become widely circulated.