Proud officials presented Meitner to Kaiser Wilhelm II at the official opening of the KWI for Chemistry on 23 October 1912. The following year she became a Mitglied (associate) like Hahn (although her salary was still less), and the radioactivity section became the Hahn-Meitner Laboratory. Meitner celebrated with a dinner party at the Hotel Adlon. Hahn and Meitner's salaries would soon be dwarfed by royalties from mesothorium ("middle thorium", radium-228, also called "German radium") produced for medical purposes, for which Hahn received 66,000 marks in 1914 (equivalent to €369,000 in 2021). He gave ten per cent to Meitner. In 1914, Meitner was offered an academic position in Prague, which was then part of her country of Austria-Hungary. Planck made it clear to Fischer that he did not want Meitner to leave, and Fischer arranged for her salary to be doubled to 3,000 marks (equivalent to €17,000 in 2021).