After the death of Constantine, the empire being again parted, civil dissensions took place; the northern barbarians and Persians renewed their incursions, and at length the battle of Mursa, between the emperor Constantius and an usurper named Magnentius, destroyed such numbers that the empire no more recovered its former strength. From this time therefore the wars with the barbarians became more and more violent; and, though frequently overcome, the advantage was ultimately on their side. In 361, the first year of the emperor Julian, the pestilence again made its appearance. It was accompanied by many other grievous calamities: Dreadful earthquakes were felt in every province; most of the cities in Palestine, Libya, Sicily and Greece, were overturned. Libanius writes, that not one city in Libya was left standing, and but one in Greece; that Nice was utterly ruined, and Constantinople greatly damaged. The sea, in several places, broke in upon the land, and destroyed whole cities with their inhabitants. At Alexandria, the sea, retiring during an earthquake, returned again with such violence, that it drowned several towns and villages in the neighbourhood. The earthquakes were followed by a famine, and the famine by a pestilence. It was observed by the christian writers, that the famine seemed to follow Julian from place to place: and no wonder that it did so; for he not only had always a large army along with him, which consumed great quantities of provision, but, attempting to remedy the evil by fixing the prices of provisions, he rendered it much worse, as the dealers in corn were thereby tempted to convey it to other places.[38] Indeed this emperor seems to have been inclined to produce famines wherever he went; for, on his entering the territories of the Persians, with whom he was at war, he wasted the country to such a degree, that he could neither subsist nor return; while the enemy, imitating his example, destroyed all before him. The consequence was, that, by the time Julian was killed, the famine raged in the Roman camp to such a degree, that not a single person could have escaped, had not the enemy mercifully granted them peace. [38] Univ. Hist. vol. xvi.