Forty-six years after the flight of Mahomet from Mecca, his disciples appeared in arms under the walls of Constantinople. 1 They were animated by a genuine or fictitious saying of the prophet, that, to the first army which besieged the city of the Caesars, their sins were forgiven: the long series of Roman triumphs would be meritoriously transferred to the conquerors of New Rome; and the wealth of nations was deposited in this well-chosen seat of royalty and commerce. No sooner had the caliph Moawiyah suppressed his rivals and established his throne, than he aspired to expiate the guilt of civil blood, by the success and glory of this holy expedition; 2 his preparations by sea and land were adequate to the importance of the object; his standard was intrusted to Sophian, a veteran warrior, but the troops were encouraged by the example and presence of Yezid, the son and presumptive heir of the commander of the faithful. The Greeks had little to hope, nor had their enemies any reason of fear, from the courage and vigilance of the reigning emperor, who disgraced the name of Constantine, and imitated only the inglorious years of his grandfather Heraclius. Without delay or opposition, the naval forces of the Saracens passed through the unguarded channel of the Hellespont, which even now, under the feeble and disorderly government of the Turks, is maintained as the natural bulwark of the capital. 3 The Arabian fleet cast anchor, and the troops were disembarked near the palace of Hebdomon, seven miles from the city. During many days, from the dawn of light to the evening, the line of assault was extended from the golden gate to the eastern promontory and the foremost warriors were impelled by the weight and effort of the succeeding columns. But the besiegers had formed an insufficient estimate of the strength and resources of Constantinople. The solid and lofty walls were guarded by numbers and discipline: the spirit of the Romans was rekindled by the last danger of their religion and empire: the fugitives from the conquered provinces more successfully renewed the defence of Damascus and Alexandria; and the Saracens were dismayed by the strange and prodigious effects of artificial fire. This firm and effectual resistance diverted their arms to the more easy attempt of plundering the European and Asiatic coasts of the Propontis; and, after keeping the sea from the month of April to that of September, on the approach of winter they retreated fourscore miles from the capital, to the Isle of Cyzicus, in which they had established their magazine of spoil and provisions. So patient was their perseverance, or so languid were their operations, that they repeated in the six