The private pharmacy institute of Franz Wilhelm Schweigger-Seidel (1795-1838) in Halle

The aim of this paper is to describe the development of the chemical-pharma cist institute of Franz Wilhelm Schweigger-Seidel (1795-1838) in Halle. The institute was founded in 1829. Six letters by Johann Salomo Christoph Schw eigger (1779-1857) and Franz Wilhelm Schweigger-Seidel to Johann Bartholoma us Trommsdorff (1770-1837) present new detailed information on the institut e of Schweigger-Seidel and on his biography, especially on his descent and on his work as a pharmacist. Besides it was possible to show the family lin ks between him and J. S. Chr. Schweigger resulting from adoptation in a cor rect way for the first time.