Forel, François Alphonse (1841-1912)(19)
Regelmann, Christian (1842-1920)(2)
Reid, Harry Fielding (1859-1944)(2)
Strasburger, Eduard (1844-1912)(2)
Volger, Georg Heinrich Otto (1822-1897)(2)
Archenhold, Friedrich Simon (1861-1939)(1)
Darmstaedter, Ludwig (1846-1927)(1)
Dufour, Henri Evert (1852-1910)(1)
Engelmann, Wilhelm (1843-1909)(1)
Graff, Ludwig von (1851-1924)(1)
Ratzel, Friedrich (1844-1904)(1)