staircase in the thickness of its walls: it is now used as a museum for Roman and British antiquities. Advancing still further eastwards, but with an inclination to the north, and again following the course of De Vesci’s curtain, we reach the Constable’s Tower (No. 26 in plan), of Edwardian architecture, to which there are three external entrances, one in each floor: one chamber in this tower is used as an armoury. Again, as we follow the guidance of the curtain-wall towards the S.E., we have before us the Norman masonry, with traces of Edwardian, or first Percy, reparation. Here, about midway between Nos. 26 and 27 of the plan, an embattled projection from the line of the wall has been entitled “Hotspur’s Chair,” and to the east of this projection a gap in the curtain is filled up with eighteenth-century masonry; this gap a not very well-supported tradition assigns to a fierce assault by some Scots, who are said to have been so far successful as to beat down this portion of the castle-wall, after which exploit the tradition adds that the assailants were cut off to a man by the garrison. This tower, which is called both the Ravine Tower and the Record Tower (No. 27 of plan), stands at the easternmost extremity of the castle; with Edwardian remains in its walls, it was for the most part rebuilt in the last century: on the ground-floor is the muniment-room, in which the records are kept. From this point our course inclines in a south-westerly direction, the curtain being eighteenth-century work, until again, at No. 28 in the plan, we welcome traces of the early masonry: here another garret occurs, with the junction of the Norman and modern masonry; then yet another succeeds, as once more we follow an eighteenth-century wall until we reach the new Lion or Garden Gatehouse, No. 29 in the plan, through which a road leads to Barneyside, where are situated the extensive and beautiful gardens of the castle. [Illustration: _On the Barbican._]