The series: Topoi. Berlin Studies of the Ancient World brings together contributions from all fields of classical studies, from pre- and early history and classical archeology to ancient philosophy, theory of science and theology. Monographs and volumes which present the research results of the Excellence Cluster Topoi form a major focus of the series. Additional topics are currently being planned. The Excellence Cluster Topoi examines the formation and transformation of space and knowledge in ancient civilizations. Topoi is the joint responsibility of the Freie Universitat Berlin and the Humboldt-Universitat zu Berlin. Partner institutions are the Berlin Brandenburg Academy of Sciences and Humanities, the German Archeological Institute, the Max Planck Institute for the History of Science and the Prussian Cultural Heritage Foundation. Furthermore Topoi is interlinked with several university institutes as well as other institutions. For further information see www.topoi.org. Selected titles from the series Topoi. Berlin Studies of the Ancient World will be freely accessible in digital form on the Internet at the date of print publication. The series regards itself as a pilot project on how to combine open access with the support of professional publishers in the publication of current research. See press release June 23rd, 2009 .