Note 54 — Chapter I · ADVANCE OF THE ROMANS TO THE FIRTHS OF FORTH AND CLYDE.

See for an elaborate description of this wall Mr. Collingwood Bruce’s exhaustive work, The Roman Wall, a Description of the Mural Barrier of the North of England, third edition, 1867. The main authority for Hadrian’s work in Britain is Ælius Spartianus (181), who says, ‘Ergo conversis regio more militibus, Britanniam petiit: in qua multa correxit, murumque per octaginta millia passuum primus duxit, qui Barbaros Romanosque divideret.’—(De Hadr. 11.)