Incarceration of students in a particular lock-up (detention room, slammer) administered for the purpose by the university, known in German as a Karzer, was a common disciplinary punishment used by universities with a larger or smaller degree of jurisdiction of their own. In Germany, the Karzer existed both at universities and at gymnasiums (grammar schools). Keeping students at universities in Karzer arrest went out of use in the years around 1910-1914. Marburg's last Karzer inmate, for exampl… (More on Karzer)