456 THE HISTORY Book I. of the wall of Severus. And the fecond Iter of Antoninus exhi- bits this title and thefe names, A Valla ad Portum Ritupas, A Blato Bulgio Caftra Exploratorum m. p. 12 Luguvallio m, p« , 1 2. This Iter therefore commences equally from one of the walls, and, as the mention afterwards of Luguv allium demon ftrates, commences equally from the wall of Antoninus, Luguvallium was certainly at the wall of Severus, and is in the fifth Iter ac- tually denominated Luguvallium Ad Vallum. Thus plainly are two Itinera of Antonine evinced to begin from the more nor- therly vallum, and to travcrfe the whole province of Valentia. And thus plainly are the Romans evinced to have garrifoned the walls betwixt the friths even as late as the reign of Couftan- tine and in a part of the fourth century. And the Notitia is ftill more particular. It not only points out the continuance of the Roman foldiers at the northern vallum. It fpecifies the number of forts that were garrifoned at it, and it gives us a lift of the forces that were quartered in them. Twenty-three fta- tions are placed by the Notitia per lineam Valli.. And the fir ft eighteen of thefe are demonftrated by Horfeley to range along the line of the fouthern wall * Thefe eighteen compofe the whole length of that extended chain of forts which fecured the' Vallum of Severest. Where then (hall we fettle the other five ? We aft in fall centradi&iou to the declaration of the No- titia, if we transfer them from the line of the wall and plant them at a diftance from it. They are declared as exprefsly as the others to be per lineam Valli. Demonft ration fliews them not to have been placed along the range of the fouthern Vallum. Prejudice therefore muil acknowledge them to have been certainly conftru&ed* along the line of the northern. But there is one very remarkable circumftance in the two abovementioued Itinera of Antoninus, which has never been ob*» fcrved by the critics. The one Iter begins thus, A Limite