Evidence is not wanting to prove, on the other hand, that quarries near the line of the Roman Wall were wrought in the time of Hadrian. In an old quarry near the top of Borcum, or Barcombe (a hill near the village of Thorngrafton, and opposite to the station of BORCOVICUS), a large number of Roman coins was found. They are described and figured in the last Part of this work. Since none of the pieces of this hoard were later than the time of Hadrian, and the coins of his reign and Trajan’s were peculiarly fresh, it is agreed that the treasure must have been deposited in Hadrian’s time. The quarry on Haltwhistle-fell (p. 81), it will also be remembered, bore the name of the sixth legion, which, if the reasoning in the next paragraph be admitted, will appear to have been inscribed before the arrival of Severus in Britain. It has already been observed that numerous stones along the line bear, without any addition, the names of the second legion, the sixth, and the twentieth. There can be no doubt that these legions and their vexillations executed the principal part of the Work. The main bodies of these forces, however, had their head-quarters, at the time of the arrival of Severus, in districts of the country southward of the Barrier line. The second legion, after the building of the Antonine Wall, appears to have gone to Carleon, in South Wales, the Isca of the Romans. The sixth legion removed to York before A.D. 190, where it continued as long as the Romans remained in the island. Horsley, speaking of the inscriptions on the Wall which mention this legion,[Sidenote: MOVEMENTS OF THE LEGIONS.] says, ’some of them, from the characters and other circumstances, may be supposed as ancient as Hadrian’s reign.' The twentieth legion had taken up its abode at Chester, the DEVA of the Romans, as early as the year 154. Though it is probable that Septimius Severus may have taken detachments of these legions with him in his Scottish campaign, it is not likely that he would withdraw the main bodies from forts of such importance; and those which did accompany him would find the discharge of their military duties sufficiently onerous, without engaging in a work so vast as the building of the Wall.