Haidinger left Freiberg to re-settle in Edinburgh, where he stayed until the summer of 1825. In Edinburgh Haidinger met mineralogists Robert Jameson and Robert Ferguson of Raith, geologist James Hall, chemists Thomas Thomson and Edward Turner, and physicist David Brewster. The years in Edinburgh are among Haidinger's most productive: The translation of the comprehensive textbook by Mohs appeared in print and 33 scientific papers were written and published (in, for example, The Edinburgh Journal of Science of David Brewster and in the Philosophical Journal of Robert Jameson). While in Edinburgh Haidinger's friend Pierre Berthier named a new mineral (an iron antimony sulfide) "Haidingérite". Return to Austria A long journey with Robert Allan (the son of Thomas Allan) in 1825 and 1826 brought Wilhelm Haidinger to Norway, Sweden, Denmark, Germany, Austria, and northern Italy. The winter months of 1825 and 1826 were spent by Wilhelm Haidinger in the highest scientific circles of Berlin; here he met for example Gustav Rose and Heinrich Rose, Friedrich Wöhler, Eilhard Mitscherlich, Heinrich Gustav Magnus, and Johann Christian Poggendorff. In the spring of 1826 the journey was continued and visits to Friedrich Mohs in Freiberg, to Johann Friedrich Ludwig Hausmann and Friedrich Stromeyer in Göttingen, Hermann von Meyer in Frankfurt, Carl Cäsar Ritter von Leonhard and Leopold Gmelin in Heidelberg, Christian Gmelin, Franz von Kobell in Munich and Franz Xaver Riepl in Vienna completed their trip. In 1827 Wilhelm Haidinger returned to Austria and became one of the directors of the "Erste (böhmische) Porzellan-Industrie Aktien Gesellschaft (Epiag)" in Elbogen (now Loket, Czech Republic). Working in the ceramics factory owned by his brothers Eugen and Rudolf did not prevent Wilhelm from continuing his mineralogical research and writing scientific papers. In the years 1827 to 1840 Haidinger published some 24 papers (according to the Catalogue of Scientific Papers), which appeared in such well known journals as Poggendorff's Annalen and the Zeitschrift für Physik. One of the papers described the occurrence of fossil plants in the brown coal and sandstones of the surroundings of Elbogen (Loket). In 1840 Wilhelm Haidinger moved to Vienna to succeed his tutor Friedrich Mohs as director of the mineralogical collection of the "Kaiserlich-Königlichen Hofkammer im Münz- und Bergwesen". How much Haidinger devoted himself to science in general is evident from the fact that he founded a non-governmental scientific society: the "Freunde der Naturwissenschaften in Wien". Becker, in 1871, recalled how Haidinger had been able