What happened to the nave between 1245 and 1317 is not known. There is no work in the cathedral of that date. But between 1317 and 1327 Bishop Cobham commenced the reconstruction of the north side of the nave. It is therefore Curvilinear work. It is not, however, typical work of the period. With that tenderness for older design which one sees at Ely, St. Alban’s, Beverley and Westminster, the architect has suppressed his individual preferences, and designed his work so as to be a nice transition from the twelfth-century bays near the west front to the thirteenth-century bays of the choir; so his piers and his clerestory are a Curvilinear version of the work immediately to the west of him, while his triforium is a repeat of that of the choir. But before the new work on the north side was joined up to the Transitional bays of the nave money seems to have become scarce at Worcester. Pilgrims had begun to desert St. Wulfstan for newer if not holier saints. Hitherto St. Wulfstan had had a monopoly in the West-country. There was not another saint of equal efficacy till you reached Winchester. But in 1287 Bishop Cantilupe began to bring the dead to life at Hereford; and in 1327 Edward II. was buried at Gloucester, and miracles soon followed there also. So Worcester now had rival miracle-workers on either side. The result was that it was found impossible to finish the Curvilinear work, although the pier-arcade was complete all along the north side of the nave, and there only remained to build two bays of the triforium and clerestory. [Illustration: NAVE, LOOKING EAST.] Building operations seem to have halted for some thirty years; and when they were resumed, _c._ 1360, the completion of the north side and the rebuilding of the south side of the nave were carried out in a balder and more economical way. All this Perpendicular work, including the completion of the new tower, seems to have been completed before the end of the fourteenth century. About the same time the great transept was vaulted and panelled, somewhat after the fashion of the Gloucester work. The transept is a tangle of early Norman, late Norman, Transitional, Curvilinear, and Perpendicular work. Evidently there are breaks and lacunæ in the architectural record of Worcester which we have no materials for filling up. In the fifteenth century the monks seem to have rebuilt their cloister. A late and interesting bit of design is to be seen in the chantry of Prince Arthur, elder brother of Henry VIII., who died in Ludlow castle in 1486. The flat roof, with its fan-vault, skeleton ribs and pendant, is an anticipation of the vaulting of his father’s chapel in Westminster Abbey.