text: --Formerly an opening in the centre of this parapet had evidently conducted by several steps to the water's edge in order to facilitate the communications with boats on the river; but it had now been blocked up by a fresh mass of heavy brickwork and masonry as if for the purpose of adding security to the place; and at the time we write two culverins mounted so as to be on a level with the top of the parapet contributed to give to the spot the look of a fortified stronghold