PICT'S-WALL, (Miscellaneous) of which there are still some ruins both in Northumberland and Cumberland, was built by the Romans from Carlisle to Newcastle upon Tine, i.e. 80 m. from the Irish-Sea to the German-Ocean, to prevent the incursions of the Scots and Picts, who harrassed them from the Scots b. when the necessities of the empire drew their legions from Britain. The Emperor Adrian first built it of earth, and in anno 123 caused it to be pallissadoed. Severus the Emperor built it of stone, with turrets at every mile, wherein he kept garrisons; yet the Picts broke in through it more than once. AEtius, the Roman general, rebuilt it of brick anno 430; but it was not long before it was pulled down by the Picts. It was 8 foot thick, and 12 foot high.