sentences:  From 1933 on, he was the second director of the Übersee-Museum in Bremen, Germany.The Senckenbergische Naturforschende Gesellschaft bought his extensive collection (including type material from other arachnologists such as L. Koch, Eugène Simon, Thorell, Philipp Bertkau and Friedrich Dahl) and his private library.Some of his specimens are also in the Museum für Naturkunde Berlin.