There were, however, considerable works executed in his reign. The finest and most magnificent aqueduct which has been carried on to Rome, the _Aqua Claudia_, was built by him; and there is no doubt but that in the restoration of the city in the fifteenth century, it might have been completely repaired. Other relics also of his buildings are in the very grandest style; the two great arches, known under the name of the _Porta Maggiore_ are undoubtedly his. He likewise accomplished the draining of the Lake Fucinus into the Liris, which Augustus had given up in despair: the fallen in vaults may still be seen. At first, some mistakes were made in the levelling, and an attempt to let off the water miscarried; but the fault was soon remedied. He undertook a warlike expedition against Britain, a country which no one had thought anything about since the time of Julius Cæsar; and he extended the boundary of the Roman empire thus far. He himself led the army over, and established a province which comprised the greater part of south-eastern England, and in which colonies and _municipia_ were soon founded: from thence the subjection of Caledonia was afterwards effected. He died, being undoubtedly poisoned by his wife Agrippina; for she wanted to secure the succession for her son Nero, as she knew that Claudius was sorry that he had adopted him, and wished to reinstate Britannicus in his rights. He had always been unhappy,—fortune indeed had been too hard upon him,—and he died despised and laughed at; an instance of which we have in the _Ludus de morte Claudii Cæsaris_ (incorrectly called ἀποκολοκύνθωσις) written by Seneca. LITERATURE AFTER THE DEATH OF AUGUSTUS. MORAL CONDITION OF ROME AND THE PROVINCES.