Pictures from Observations
For Karl Gottfried Hagen (1749–1829), German chemist and professor at the University of Königsberg, Prussia (now Kaliningrad, Russia). While running his family-owned pharmacy (1772–1816), he became a doctor (1775), professor of medicine (1788), assessor (1789), medical advisor to the provincial health department (1800), and professor of chemistry, physics and natural history (1807). He founded the first German pharmaceutical (chemical) laboratory and introduced pharmacology as a university-taught discipline. He wrote Textbook on the Apothecary Art (1778) and Outline of Experimental Chemistry (1786), which Immanuel Kant declared ‘a logical masterpiece’. In 1817, he founded the Beiträge zur Kunde Preussens aimed at the popularisation of local history and science.