nocturnal interview, he informed the enemy of a subterraneous passage from his house under the wall of the city; the son of the caliph, with a hundred volunteers, were committed to the faith of this new ally, and their successful intrepidity gave an easy entrance to their companions. After Caled had imposed the terms of servitude and tribute, the apostate or convert avowed in the assembly of the people his meritorious treason: "I renounce your society," said Romanus, "both in this world and the world to come. And I deny him that was crucified, and whosoever worships him. And I choose God for my Lord, Islam for my faith, Mecca for my temple, the Moslems for my brethren, and Mahomet for my prophet; who was sent to lead us into the right way, and to exalt the true religion in spite of those who join partners with God."

The conquest of Bosra, four days' journey from Damascus, encouraged the Arabs to besiege the ancient capital of Syria. At some distance from the walls, they encamped among the groves and fountains of that delicious territory, and the usual option of the Mahometan faith, of tribute or of war, was proposed to the resolute citizens, who had been lately strengthened by a reenforcement of five thousand Greeks. In the decline, as in the infancy, of the military art, a hostile defiance was frequently offered and accepted by the generals themselves: many a lance was shivered in the plain of Damascus, and the personal prowess of Caled was signalized in the first sally of the besieged. After an obstinate combat, he had overthrown and made prisoner one of the Christian leaders, a stout and worthy antagonist. He instantly mounted a fresh horse, the gift of the governor of Palmyra, and pushed forwards to the front of the battle. "Repose yourself for a moment," said his friend Derar, "and permit me to supply your place: you are fatigued with fighting with this dog." "O Dear!" replied the indefatigable Saracen, "we shall rest in the world to come. He that labors to-day shall rest to-morrow." With the same unabated ardor, Caled answered, encountered, and vanquished a second champion; and the heads of his two captives who refused to abandon their religion were indignantly hurled into the midst of the city. The event of some general and partial actions reduced the Damascenes to a closer defence: but a messenger, whom they dropped from the walls, returned with the promise of speedy and powerful succor, and their tumultuous joy conveyed the intelligence to the camp of the Arabs. After some debate, it was resolved by the generals to raise, or rather to suspend, the siege of Damascus, till they had given battle to the forces of the emperor. In the retreat, Caled would have chosen the more perilous station of the rear-guard; he modestly yielded to the wishes of Abu Obeidah. But in the hour of danger he flew to the rescue of his companion, who was rudely pressed by a sally of six thousand horse and ten thousand foot, and few among the Christians could relate at Damascus the circumstances of their defeat. The importance of the contest required the junction of the Saracens, who were dispersed on the frontiers of Syria and Palestine; and I shall transcribe one of the circular mandates which was addressed to Amrou, the future conqueror of Egypt. "In the name of the most merciful God: from Caled to Amrou, health and happiness. Know that thy brethren the Moslems design to march to Aiznadin, where there is an army of seventy thousand Greeks, who purpose to come against us, that they may extinguish the light of God with their mouths; but God preserveth his light in spite of the infidels. As soon therefore as this letter of mine shall be delivered to thy hands, come with those that are with thee to Aiznadin, where thou shalt find us if it please the most high God." The summons was cheerfully obeyed, and the forty-five thousand Moslems, who met on the same day, on the same spot ascribed to the blessing of Providence the effects of their activity and zeal.

About four years after the triumph of the Persian war, the repose of Heraclius and the empire was again disturbed by a new enemy, the power of whose religion was more strongly felt, than it was clearly understood, by the Christians of the East. In his palace of Constantinople or Antioch, he was awakened by the invasion of Syria, the loss of Bosra, and the danger of Damascus. * An army of seventy thousand veterans, or new levies, was assembled at Hems or Emesa, under the command of his general Werdan: and these troops consisting chiefly of cavalry, might be indifferently styled either Syrians, or Greeks, or Romans: Syrians, from the place of their birth or warfare; Greeks from the religion and language of their sovereign; and Romans, from the proud appellation which was still profaned by the successors of Constantine. On the plain of Aiznadin, as Werdan rode on a white mule decorated with gold chains, and surrounded with ensigns and standards, he was surprised by the near approach of a fierce and naked warrior, who had undertaken to view the state of the enemy. The adventurous valor of Derar was inspired, and has perhaps been adorned, by the enthusiasm of his age and country. The hatred of the Christians, the