A soldier named Constantine was then chosen, owing his elevation mainly to his name being that of the celebrated Emperor; and this new Constantine no sooner assumed the purple, than, with the fatal policy of his predecessors, he resolved to strike a blow for the possession of Gaul, and Spain likewise. Before withdrawing the troops from Britain, however, he counselled the provincial Britons to abandon the districts between the walls, a territory now barely and with difficulty maintained by them, and to protect the remainder of the province by maintaining garrisons on the southern wall. At the same time the valleys on the north side of the Solway Firth appear to have been protected by an earthen rampart and fosse, which extends from the shore of the firth opposite the western termination of the wall across the upper part of the valleys till it terminates at Loch Ryan. On the south coast, where the province had been exposed to the piratical descents of the Saxons, and had hitherto been protected by the Roman vessels, he erected towers at stated intervals. Having thus taken the best measures in his power to enable the provincial Britons to protect the province, Constantine crossed over to Gaul with the army, and the Roman legions left Britain, never again to return. They had no sooner been withdrawn, than the old enemies of the province occupied the district as far as the southern wall to which Constantine had withdrawn the frontier; but although the Roman troops had left the island, the civil government of the Romans still remained in force, and the provinces of Britain continued to form an integral part of the Empire. The events, however, connected with the usurpation of Constantine speedily led to the termination of the Roman government in Britain, and its final separation from the Empire. Constantine had no sooner landed in Gaul than an engagement took place between the British army and the Barbarians who had entered Gaul by the passes of the Alps, in which the former were successful, and a great slaughter of the enemy took place. The Roman troops in Gaul submitted to Constantine, and he thus obtained possession of the whole of that country. In the meantime, intelligence having reached Rome of Constantine’s successful usurpation, and that the provinces of Gaul had become subject to him, Stilicho returned to Rome from Ravenna, and sent Sarus in command of an army against him. Justinian, one of Constantine’s generals, was encountered and slain. Neviogastes, another, was put to death by treachery; and Sarus proceeded to besiege Valentia, where Constantine then was. The usurper now appointed Edovinchus, and Gerontius a native of Britain, his generals; and Sarus, dreading their military reputation, retreated from Valentia, which he had invested for seven days. The new generals followed and attacked him, and it was with difficulty he reached the Alps and escaped into Italy, having had to