1822 studies at the University of Berlin; 1827 doctorate with a dissertation on tellurium; 1827 investigations in the laboratory of Berzelius at Stockholm; 1828 return to Berlin; 1831 Habilitationsschrift on mineral analysis; Privatdozent; lectures on technology at the university and on chemistry at the municipal trade school; 1833 associate professor; 1845 professor of technology and physics at the University of Berlin; 1861-62 rector at Berlin; 1868 co-founder of the German Chemical Society.
