from the battlements; but during the whole time the shower of missiles from the archers and slingers never ceased for a moment.
2. We had with us two of the legions which had served under Magnentius, and which, as we have said, had lately been brought from Gaul, composed of brave and active men well adapted for conflicts in the plain; but not only useless for such a kind of war as that by which we were now pressed, but actually in the way. For as they had no skill either in working the engines, or in constructing works, but wore continually making foolish sallies, and fighting bravely, they always returned with diminished numbers; doing just as much good, as the saying is, as a bucket of water brought by a single hand to a general conflagration.
3. At last, when the gates were completely blocked, and they were utterly unable to get out, in spite of the entreaties of their tribunes, they became furious as wild beasts. But on subsequent occasions their services became conspicuous, as we shall show.
4. In a remote part of the walls on the southern side, which looks down on the Tigris, there was a high tower, below which yawned an abrupt precipice, which it was impossible to look over without giddiness. From this by a hollow subterranean passage along the foot of the mountain some steps were cut with great skill, which led up to the level of the city, by which water was secretly obtained from the river, as we have seen to be the case in all the fortresses in that district which are situated on any river.
5. This passage was dark, and because of the precipitous character of the rock was neglected by the besiegers, till, under the guidance of a deserter who went over to them, seventy Persian archers of the royal battalion, men of eminent skill and courage, being protected by the remoteness of the spot which prevented their being heard, climbed up by the steps one by one at midnight, and reached the third story of the tower. There they concealed themselves till daybreak, when they held out a scarlet cloak as a signal for commencing an assault, when they saw that the city was entirely surrounded by the multitude of their comrades; and then they emptied their quivers and threw them down at
