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310 MedicEval Military Architecture. being governed by the rocky ridge on which it stands, and which Hfts it a few feet above the level of the town. It is in length about IOC yards, and in breadth from 30 to 40 yards, the narrowest part being at the centre. Its outline is polygonal, and on each angle is a tower, also polygonal. Of these there are nine, two of which are double, and form gatehouses. There are also two smaller towers, also polygonal, in the centre of two of the curtains. The ground falls rather steeply from the south-east end, but at its lowest is some feet above the water level. The main or King's Gatehouse, a very noble structure, is in the centre of the town front, and occupies a re-entering angle of the wall. It is broad and high, with an unusually lofty and ornate arch- way, in the upper part of which is a statue of Edward II., who com- pleted the castle, and below this the recessed gateway. Two bold half-octagons flank the entrance, the approach to which was by a drawbridge, now superseded by a work in masonry. The portal is broad and high, vaulted and ribbed, with the usual portcullis grooves, rebates, and bar holes for doors, and meurtrilres in the vault. On either side is a lodge, an unusually spacious chamber. Both of the flanking towers are looped, and in that to the right is a mural gallery, with loops completing the command of the approach. The rear of this right-hand tower is prolonged into a square building forming the prison tower, in one angle of which is a well staircase leading to the upper floor of the gatehouse and its roof At the foot of this staircase a small portcullised doorway opens westwards upon the kitchen. From the Prison Tower a narrow building connected the gatehouse with the opposite or Exchequer Tower, and thus divided the castle into an eastern or upper, and a western or lower, ward. A hand- some archway pierced this building, and opened from one ward to the other. Building and gatehouse are gone, but the jambs of one side, with two portcullis grooves, show that the portal was strong and was ornate. Besides the King's Gate the upper ward was entered by a second or Queen's Gate, a very remarkable structure, seeing that it is placed at the highest part of the fortress, and that the cill of its entrance is some 25 feet above the present ground, and must have been 12 feet or 14 feet more above the bottom of the now filled-up ditch. How this entrance was approached does not appear, if by a drawbridge the pier on which it fell must have been a very lofty structure, and a sort of viaduct must have led up to it. The portal is vaulted and ribbed, and had a portcullis and gates, but the lateral chambers do not open from it. The rear of the gatehouse seems not to have been completed, but close to it, to the west, is the jamb of a small portcullised gateway, with ornate mouldings. Into what it led is not very apparent. The towers, though differing widely in details, are all of one general type, and probably designed by one hand. Each has a basement at about the exterior ground level, damp and dark, and only to be reached by a ladder from the floor above. Possibly these