“ He was educated in Vienna, afterwards studied geology at the mining academy of Schemnitz (1839–1843) , and for a time was engaged in official mining work in Styria. In 1846 he became assistant to W. von Haidinger at the mineralogical museum in Vienna; three years later he joined the imperial geological institute, and in 1866 he was appointed director. In 1886 he became superintendent of the imperial natural history museum in Vienna. ”