the lands, or fields granted on a tithe, as appears from Tacitus, to the rabble of Gauls who succeeded the Marcomanni. This people had till then proved a check to the Roman conquests on the Rhine; and hence probably their name, which signifies people living on the marches or limits of the empire. In Cicero we meet with Ager Decumanus, which is of the same import with the Ager Decumanus of Tacitus.