186. These defences she cast round her city from the depth; and she made the following addition which was dependent upon them:—The city was in two divisions, and the river occupied the space between; and in the time of the former rulers, when any one wished to pass over from the one division to the other, he had to pass over in a boat, and that, as I imagine, was troublesome: she however made provision also for this; for when she was digging the basin for the lake she left this other monument of herself derived from the same work, that is, she caused stones to be cut of very great length, and when the stones were prepared for her and the place had been dug out, she turned aside the whole stream of the river into the place which she had been digging; and while this was being filled with water, the ancient bed of the river being dried up in the meantime, she both built up with baked bricks after the same fashion as the wall the edges of the river, where it flows through the city, and the places of descent leading from the small gateways to the river; and also about the middle of the city, as I judge, with the stones which she had caused to be dug out she proceeded to build a bridge, binding together the stones with iron and lead: and upon the top she laid squared timbers across, to remain there while it was daytime, over which the people of Babylon made the passage across; but at night they used to take away these timbers for this reason, namely that they might not go backwards and forwards by night and steal from one another: and when the place dug out had been made into a lake full of water by the river, and at the same time the bridge had been completed, then she conducted the Euphrates back into its ancient channel from the lake, and so the place dug out being made into a swamp was thought to have served a good purpose, and there had been a bridge set up for the men of the city.