The walls of this city are standing, more or less perfect, quite round; perhaps the most intire of any in the Roman empire, especially the whole north side of the wall, which is a most agreeable sight. The composition is chiefly flint for the space of four foot high, then a binding of three layers of rag-stone laid flat: in many places five of these double intervals remain for a great length. There was a broad ditch quite round, and now for the most part impassable, and full of springs. Here and there Roman bricks are left in the walls. Though on the out-side they are of this considerable height, yet the ground within is so raised as nearly to be equal to the top, and that quite round crowned with oaks and other timber-trees of no mean bulk, and which Mr. Camden takes notice of in his time. Not long since, lady Blessington cut 500l. worth of timber from thence. Gildas says, Constantius the son of Constantine the Great built it, and sowed corn in the track of the walls, as an omen of their perpetuity:[135] indeed, now the whole city is arable; and among the fields Roman bricks, bits of pots, rubbish of buildings, are scattered every where, and coins are picked up every day. It is a parallelogram whose shortest side to the longest is as 3 to 4; its length about 2600 feet, its breadth 2000; standing conformable to the four cardinal points: it had two gates upon its length opposite. There is only one farm-house within it, and the church. To the east, by that house, the foundation of the gate is visible, and several Roman bricks thereabouts. All the yards here are like a solid rock, with rubbish, pavements and mortar, cemented together. The late Rev. Mr. Betham, minister of this place, a learned, curious and worthy person, had collected a vast number of coins and antiquities found here: he is buried under the north wall of the chancel without side: within is another monument of a person of quality: it is remarkable that a wall only divides them in their graves, who both met a sad and disastrous fate at different times in the same place, being drowned in Fleet-ditch. Onion-hole, in the middle of the southern wall, is a place much talked of here by the ignorant country people, which is only an arch in the foundation for the issue of a sewer: they have a like story here of this city being taken by sparrows. I saw a silver coin of Philippus, and a brass one of Constantine, and many more. A spring arises from under the wall at the church-yard. The streets are still visible in the corn. Rings with stones in them are often found, among inscriptions and all sorts of other antiquities. [Sidenote: +Amphitheatre.+] [Sidenote: TAB. XLIII. 2d Vol.]