In 1816, Herr Andre came to Munich again, and I imparted to him many of my recent inventions in regard to lithography. On this occasion we decided ultimately which of our plates should be put into the work and which should be discarded. I promised to get seriously to work and we looked forward so confidently to the completion of the entire publication that Herr Andre circulated a preliminary notice of it in the Easter-Messe at Leipsic, whither he went after leaving Munich. Despite this, there came many delays, the chief one being caused by my meeting Herr Gerold, book-dealer and printer of Vienna, who invited me to establish a printery for him. As my presence in Vienna would be needed for only three months, I believed that this would cause no delay in the publication of the text-book, because the plates ordered from the Munich artists could be completed during that time, while I could furnish the text as well in Vienna as in Munich. But I had the misfortune of becoming seriously ill soon after reaching Vienna. A great weakness remained as result, and this made it impossible for me to undertake the return voyage in the bad weather that marked the winter of 1816-17. Lithography did not progress particularly with Herr Gerold during my stay, because he could not obtain the franchise, though he had petitioned for it a year ago. The greatest blame for this was due to Herr Steiner's opposition. This man, who had done but little for the art in the entire time during which he enjoyed the exclusive Austrian franchise that I had turned over to him, did this from pure ill-will, because he had suffered similar ill-luck, as he said. So Gerold could not establish so complete a printery as I wished, without going into expenses based on an uncertainty. However, various drawings were made that served to show art-lovers what could be done with lithography. It would be easy to perfect this art immensely in Vienna, because there is no lack of excellent artists. Among those who interested themselves at the very beginning in Herr Gerold's undertaking were Herr Colonel von Aurach, Herr Captain Kohl, and Herr Kunike, the drawing-master for the family of Prince von Schwarzenberg. They convinced themselves with many experiments that lithography was eminently suitable for the easy reproduction of many styles of drawing, and recommended the method to all their acquaintances. Through the experiments of Herr Kunike I gained the conviction that one could print true originals by using a method of touching up the impressions.