Next we come to the =Lady-Chapel=, the east window of which (seven lights) was inserted by Bishop Barnet (1366-1373), who also “beautified five of the windows in the presbytery.” The west window (eight lights) is of a little later date. In the side walls of the Lady-Chapel are five large windows, the tracery of which is very beautiful. The =East End= is a superb illustration of Early English, although slightly altered from its original state by the introduction of the windows in the chapels of Alcock and West, and a plain wall for the original windows in the south aisle. Flying-buttresses support the roof of the presbytery and choir. The Perpendicular window of seven lights attracts our notice in the south end of the south transept. The entrance to the Cathedral from the south opens from the eastern end of the cloisters and is called the =Monks’ Door=. The ornamentation is very rich. One spiral column is especially fine. The arch is trefoiled with cusps, having circular terminations with star ornament, and in the spandrels are quaint, crouching monks, each holding a pastoral staff. Two twisted dragons writhe above. At the west end of the north alley of the cloisters we come to the =Prior’s Door=, a fine specimen of late Norman. In the tympanum is a carving in high relief of the Saviour. Entering through the West we have a full view of the Cathedral, the vista fortunately not broken, for the open screen permits the gaze to wander the whole length to the east end. The massive Perpendicular arches here were built beneath the Norman ones to secure stability for the big tower that we have just examined. The =Nave= is one of the most perfect specimens of late Norman. It is very similar to that of Peterborough. Ely, however, offers no suggestion of the transition of the next style, as does Peterborough. The Ely nave is supposed to have been finished before 1173, a little before Peterborough’s, and after that of Norwich. It contains twelve bays and measures 208 feet. The piers are of alternate design. In front of each a shaft runs up to the roof. As we follow this with our eyes we see that the ceiling is painted with Biblical subjects; but these pictures need not detain us, as they are modern. The billet moulding decorates the string-course above the main arcade. Most of the capitals are cushion. The =Octagon= is the gem of the whole Cathedral.