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 following summers the same attack and retreat, with a gradual abatement of hope and vigor, till the mischances of shipwreck and disease, of the sword and of fire, compelled them to relinquish the fruitless enterprise.