government put up at Trier. The last to defect were the Vangiones, the Caeracates and the Triboci. Meanwhile, government at Rome stabilized under Vespasian, who sent some 8 legions from various parts of the empire under Quintus Petillius Cerialis, a fortunate choice, to deal with the confusion on the Rhine frontier. On the approach of Cerealis the legions who had defected now deserted the government at Trier and sought refuge among the Mediomatrici, who, we learn, were still in place and had remained loyal to Rome. The three Belgic tribes among them, including the Vangiones, followed their tradition and changed loyalty back to the Romans. Cerealis poured oil on troubled waters. He forgave the tribes involved, of either nationality. Moguntiacum was reoccupied and restored. The legions who had defected hid in their tents and could not look their loyal comrades in the face. Cerealis instructed the others not to be scornful. Meanwhile, Gaul had repudiated Trier as a government. Cerealis offered it terms, which eventually it was forced to take, as were the Batavi. The frontier was restored, with the exception that now the Batavi had to accept a garrison of Roman troops. Cerealis rose to high rank, as he justly deserved to do, serving as a counterbalance to the headstrong Domitian, who had replaced Vespasian. Ptolemy Ptolemy, writing in the 2nd century AD, gives only brief mention of the Vangiones in his lists of towns and peoples. Lower Germany comprises from the Batavi at the mouth of the Rhine to Mocontiacum, or Mainz. Just after it is the Obruncus or Obrincus river, which is unknown, except that it ought to be the Main, and then the towns of Upper Germany. For the Vangiones Borbetomagus (Worms) and Argentoratum (Strasbourg) are mentioned. The Mediomatrices are not in either Germania but are listed to the south of Trier. Their town is Dividurum (Metz). Ammianus Marcellinus Ammianus Marcellinus, 4th century soldier and historian (Res Gestae), after pointing out that the Rhine had previously been governed by two iurisdictiones, describes the provincial division of his times. However, the regional names "upper" and "lower Germany" are still in general use. In the jurisdiction of Prima Germania ("First or Upper Germany") are Mogontiacus (Mainz), Vangiones (Worms), Nemetae (Speyer), Argentoratus (Strasbourg) and "alia municipia." Metz and Trier however are in Prima Belgica. For the year 356 Ammianus records the problems of the emperor Julian with Germanic tribes