But Irene's services to the Church were not allowed then, any more than we should allow them now, to preserve her in power. The stars in their courses seemed to the superstitious to fight against her, and, though she held the crown she had so ill-won for five years, the end came at last by the treachery of those she had raised to highest place. "For five years," says Gibbon, "the Roman world bowed to the government of a female; and, as she moved through the streets of Constantinople, the reins of four milk-white steeds were held by as many patricians, who marched on foot before the golden chariot of their queen." But among the patricians whom she had chosen was the treasurer Nicephorus, who on October 31, 802, having captured his benefactress, and with some spark of generosity, undestroyed by his ambition and his avarice, sent her to banishment rather than to death, ascended the throne of the Cæsars.

With him began a new dynasty, a new century, and in some ways a new era for the imperial city.

During the eighth century Constantinople, as a city, underwent a great change. This was not merely due to the incessant ebb and flow of population, the coming and going of different detachments of the imperial army, the founding of new monasteries by men from all parts of the Christian world, the opening of new commercial establishments, the coming of new trading embassies, but to one great and irremediable disaster. From 745 to 747 the city was devastated by the plague, that bubonic distemper, so familiar already but now more terribly destructive than ever before. The words of Theophanes, who lived when the remembrance of it was still fresh, though they have been often quoted, may be quoted again. They stand side by side with the modern records of the still powerful pestilence.

"And in the spring of the first indiction (747) the pestilence spread to a greater extent, and in summer its flame culminated to such a height that whole houses were entirely shut up, and those on whom the office devolved could not bury their dead. In the embarrassment of the circumstances, the plan was conceived of carrying out the dead on saddled animals, on whose backs were placed frameworks of planks. In the same way they placed the corpses above one another in waggons. And when all the burying-grounds in the city and suburbs had been filled, and also the dry cisterns and tanks, and very many vineyards had been dug up, the gardens too within the old walls were used for the purpose of burying human bodies, and even thus the need was hardly met."

THE AQUEDUCT OF VALENS

The effect of the great loss of life which ensued was felt at once. At the very time when multitudes were seeking refuge in Italy from the iconoclastic persecution, came this new depopulation, and Constantine found himself obliged to encourage, and even enforce, immigration from every part of his dominions. Chiefly he brought Greeks from the mainland, and their places were filled by Slaves from the North. Greece and the Balkan States as they appear to-day, and even to some degree Constantinople itself took a new and marked departure in the middle of the eighth century. Constantinople received a new Greek population and, while its official classes still preserved the pomp and dignity of Roman traditions, began to feel itself more than ever Greek. None the less it was still actively and obviously cosmopolitan. Scholars from all parts of the world came to the university where ancient classics were still read and where Greek was still a living tongue. Constantine actually made Nicetas, a man of Slavonic race, patriarch, and it is said that his clergy mocked at his pronunciation of the Greek of the Gospel. Armenians had already become almost as prominent in the city as they are to-day; at the beginning of the ninth century one of them actually became Emperor. As early as the reign of Justin II. a large colony of traders from Central Asia was established in the city. When communication became easier and the power of the Roman State, reviving under Heraclius, more wide spread, the riches of the city increased. It is noted that the influence of the Church was steadily directed against luxury, and that nothing at all like the scenes described by Juvenal or Petronius marked the Byzantium of the days of the iconoclasts. Constantine himself was a man who lived freely, and the monks whom he attacked commented severely on his life. But the rich men of Constantinople, as a rule, though they delighted in the outward adorning of gold and precious stones, and loved entertainments, the circus and excursions on the Bosphorus, lived on the whole simply. Though the churches, as well as the houses, glittered with mosaics and gems, the asceticism which the many monasteries kept always visibly before the eyes of the people, had its influence among the rich as well as the poor. Rich though the imperial city was it was rich most of all in its churches and its relics. And indeed the constant danger from without, and the pressing needs of a large population, both gave employment to great numbers and gave to the government always some practical work which kept up the taxes. The laws, it has been observed, recognised the duty of the State to provide work for the people, and to see that they did it. Idleness was regarded as a crime as well as a sin: the State declared that for this reason it must actively discourage it, and no less because "it is unfair that strong men should live by the consumption of the superfluity of the labour of others, because that superfluity is owed to the weak." It is noted also that "besides the inevitable staff of public workmen, who, in a city like Byzantium, where fires were frequent and earthquakes not uncommon, had much to do beyond the repairs necessitated by the wear and tear of time, the State also supported multitudes of bakers"—for the State still followed the Roman rule and provided the poor with bread as well as public games—"and we are taught that the gardens, to which we sometimes meet casual references in the historians, were not the property of private citizens, but were parks for the people, kept up at the State's expense." Already we see that some of the features most prominent in the city to-day belonged to it in the early Middle Age. The great Dome of S. Sophia glittered upon the wayfarer as he sailed up towards the mouth of the Golden Horn, and the city as the soldier looked at it from the tower of Heraclius was a city set in bowers of perpetual green. Another feature as prominent, which the foreigner sees from the heights of Pera, owes its preservation to Constantine Copronymus. The aqueduct of Valens had been destroyed by the Avars in the reign of Heraclius, Constantine brought thousands of workmen together and repaired it, and the water flowed as of old into the capacious cisterns which were the work of the greatest of eastern architects.

The ninth century began with the new and short-lived dynasty of Nicephorus. "His character," says Gibbon, "was stained with the three odious vices of hypocrisy, ingratitude and avarice; his want of virtue was not redeemed by any superior talents nor his want of talents by any pleasing qualifications." The historians, being ecclesiastics, resented his attempt to assert the most extreme claims of the iconoclastic emperors to rule the Church, and the people despised him for his treachery and his failures in war. He fell in 811 in battle against the Bulgarians. In six months his son, Stauricius, followed him to the tomb. Michael Rhangabe, who had married Procopia, the daughter of Nicephorus, then reigned for two years, but his weakness caused his deposition, and the people of Constantinople found a new sovereign, Leo the Armenian, forced upon them by the army. During his reign the imperial city was again besieged. Hadrianople was lost, and but for the death of the Bulgarian king it seems unlikely that Leo would have been able to drive back the forces which overran the peninsula. Yet Leo, conqueror though he was, was able to hold the crown but little longer than his predecessors. In 820 a conspiracy of his generals, which his own generosity had made possible, attacked him as he sang matins on Christmas Day, and slew him at the foot of the altar in the chapel. He did not reign without leaving a memorial of his rule which lasts to this day. The wall of Heraclius was not thought fully to defend the quarter of Blachernae. Leo determined to build another wall and dig a broad moat in front of the Heraclian wall. "The wall of Leo," says Professor Van Millingen, "stands 77 feet to the west of the wall of Heraclius, running parallel to it for some 260 feet, after which it turns to join the walls along the Golden Horn." It is a strong fortification, and the number of attacks afterwards delivered on that quarter show how necessary it was that it should be strong. "Its parapet-walk was supported upon arches, which served at the same time to buttress the wall itself, a comparatively slight structure about 8 feet thick. With a view of increasing the wall's capacity for defence, it was flanked by four small towers, while its lower portion was pierced by numerous loopholes. Two of the towers were on the side facing the Golden Horn, and the other two guarded the extremities of the side looking towards the country on the west. The latter towers projected inwards from the rear of the wall, and between them was a gateway corresponding to the Heraclian gate of Blachernae."[15]

Michael II., called the Stammerer, who was then brought from the dungeon to the throne, and on whose legs,—such was the haste of the revolution,—the fetters actually remained for some hours after he was Emperor, was twice besieged in Constantinople by a rival general, but was relieved by the Bulgarians, and showed to the captured leader, Thomas the Slavonian, none of the mercy that had been shown to himself. He died in 829, and his son Theophilus reigned in his stead. Of his character and reign the most contradictory reports are given; but it is interesting to recall the scene of his choice of a wife, as Theophanes tells it. He determined to choose a bride from among the beauties of Constantinople, and when they were assembled he walked between two lines of lovely damsels. When he came to the poetess Kasia, he addressed her in verse: