The village of Walton, by its very name, bears testimony to its relationship with the great Barrier-line. Many of the stones of the Wall may be detected in its cottages. One of its dwellings furnishes a good specimen of the mode of cottage-building formerly prevalent in the North. The rafters of the house, which consist of large and rudely-shaped pieces of timber, instead of resting upon the walls, come down to the ground; they are tied together near the top by a transverse beam, and the mud walls, as well as the thatched roof, partially depend upon them for support. Horsley says, 'at Wal-town there seems to have been some fortification or encampment. One side of the square is yet very visible, and the ramparts pretty large, about eighty yards long. It is high ground and dry. Perhaps it has been a summer encampment or exploratory post for the garrison at Cambeck.' At Sandysike farm-house the foundation of the Wall as well as abundant traces of mural vicinage are to be seen. The barn consists of Roman stones marked with the diamond-broaching. Several sculptured stones are built up in the garden-wall; amongst them is one which displays the thunderbolt of Jove; the wall-fruit peacefully rests upon it. Another, exhibiting the wheel of Nemesis, the emblem of swift justice, and which no doubt once formed part of an altar to Jupiter, is built into a pig-sty. A mill-stone of peculiar shape, and closely resembling one at Naworth Castle, is preserved on the grounds; it is probably Roman. [Sidenote: PETRIANA.] PETRIANA, the Cambeck-fort of Horsley, and the Castle-steads of the locality, is to the south of the Vallum and Wall. A deep scar separates it from the lines of the Barrier. The site of the station may be recognised, but it is long since its ramparts were overthrown, and the ruined buildings of the interior entirely obliterated. Its rich soil and sunny exposure recommended it to the father of the present proprietor of Walton-house as a fitting site for a garden, and such it is at the present day. It has yielded many altars and[Sidenote: CAMBECK-FORT.] sculptured stones, some of which are still preserved upon the spot, and from time to time the spade still reveals to the numismatist, treasures, over the loss of which, Romans in ancient days may have mourned, though not in a degree proportioned to their present value. Wood-cuts of three of the coins which have been found at Castlesteads are here introduced, as they commemorate the family of a man whose name is intimately connected with the Wall. They are in the cabinet of Robert Bell, esq., of Irthington. [Illustration: Coin of Severus, Julia]