I. Introduction.--II. Essays: The historical foundations of the German constitution, by Theodor Mayer. The proprietary church as an element of mediaeval Germanic ecclesiastical law, by Ulric Stutz. Franconia's place in the structure of mediaeval Germany, by Bernhard Schmeidler. The investiture contest and the German constitution, by Paul Joachimsen. The constitutional history of the reformed monasteries during the investiture contest, by Hans Hirsch. The state of the dukes of Zähringen, by Theodor Mayer. Constitutional reorganization and reform under the Hohenstaufen, by Otto freiherr von Dungern. Feudalism and the German constitution, by Heinrich Mitteis. The beginning of the national state in mediaeval Germany and the Norman monarchies, by Albert Brackmann.