 The "Thesaurus Practicus" (1629), an alphabetical and encyclopedic work defining legal and other terms, ran to many editions, being taken up by his student Johann Jacob Speidel (died 1666) and others.His publication of three volumes of documents from the Stuttgart archives was tendentious.Their contents suggested that the immediate dependency of the Württemberg monasteries on the Empire ("Reichsunmittelbarkeit") implied for the local dukes the obligation of restoring the confiscated religious property.