Page:Medieval Military Architecture in England (volume 1).djvu/379

 Carlisle Castle. 351 flows the deep and rapid Eden, here seven miles from the sands, and a score from its final disappearance in the Firth of the Solway. Above the city, and covering its eastern flank, the Petterill comes down to reinforce the Eden, which river, close below the city and beneath its walls, receives, by two branches, the waters of the Caldew, which thus covers the flank of the post towards the west. The city, so protected on the three sides on which it was most liable to be attacked, is built upon ground about 60 feet above the Eden, and which, slightly rising, terminates to the north in the prominence occupied by the castle, and which no doubt is the site of the " Caer," whence, whether of British or Roman origin, the city derives the first half of its name. Luguballia, or Caer Luel, does not stand upon, but about a mile within, the line of the Roman wall. This great work, coming from the direction of Wallby, and in the line of Linstock and Drawdykes, passed by Stanwix, across the river, to terminate on the Solway, at Dykesfield, near Burgh-upon-Sands. The castle occupies the northern, highest, and strongest part 01 the city, about 60 feet above the river. It is built upon the New Red Sandstone rock, and to the east, north, and west the slopes are very steep towards the meads, which fringe to a considerable breadth the left bank of the Eden, and the right of the Caldew. In plan the castle area is nearly a right-angled triangle, of which the right angle is to the south-west, and the long side, somewhat convex, and 256 yards in length, is presented towards the north and east. Of the other sides, that towards the city on the south is 200 yards, and that to the west 143 yards in length. The space within the walls is rather under three acres. The outer defence towards the city is an artificial ditch, 240 yards long, 30 yards broad, and about 10 yards deep, cut across the high ground from slope to slope, and stopped at each end by the wall connecting the city with the castle, which thus, though an indepen- dent work, is made to form part of the general enceinte. Between the castle and the city is an open space, about 78 yards broad, which contains the ditch and a broad glacis, and which, with the castle, lies outside the municipal boundary. On the west side, about 45 yards within this boundary, is Irishgate Brow, the site of the Irish gate of the city. The Scottish gate stood on a somewhat similar position on the east side ; and the third or English gate, guarded by the citadel, was at the opposite or south end of the city. The castle is composed of an outer and an inner ward, the keep standing in the latter. The inner ward forms the eastern end or apex of the area, of which it occupies about a fifth, and it is divided from the outer ward by a cross wall, 90 yards long, upon the low salient of which is the inner gatehouse. The other sides of this ward are the east, 96 yards, and the south, 73 yards. The keep stands in the south-west angle, about 20 feet from the two adjacent curtains, of which the south is thrown out about 18 feet to gain space, and to form a shoulder flanking the outer gate.