The Lady Chapel is one of the most perplexing portions of the church: the masonry of its walls and the early fourteenth-century tracery of one of its windows suggest that, if there was a more than temporary wall at the east end of the south aisle, its materials were re-used here. The arcade and the tracery of the remaining windows, almost disagreeably fantastic in its exaggerated curves, point to an advanced period in the fourteenth century for its completion, and show signs of that failing force which was an immediate result of the Black Death. We may assign the ten years between 1350 and 1360 to this work. The circular buttress-turrets at the east end are very like those which flank the north porch at Holbeach Church in South Lincolnshire, a building of much the same date. When this work was finished, only one thing remained to be done to give the church the form of a regular aisled parallelogram. This was the building of a north chapel to the chancel, a continuation eastward of the great north aisle. As we have seen, the eastern bay of that aisle already opened into the chancel. The lengthening was not taken in hand until a century and a quarter after the Lady Chapel was built; and, in the interval, one important piece of work was achieved, the widening and heightening of the eastern bay of the nave on either side, evidently to give dignity to the rood-screen and loft. It is not at all unlikely that there may have been a chancel arch up to this time, perhaps with twelfth-century jambs supporting a pointed arch, like those which had been added to the nave arcades. If so, it was now cut away: the responds of the arcades on either side were destroyed, and from the wall-face thus mutilated—the recklessly hacked surface may be seen by opening a hinged panel in the side of the modern screen—wide and lofty arches were thrown across to single dwarf-shafts resting on the abaci of the twelfth-century piers to the west. Thus unimpeded space was obtained for the screen with its loft, and the great rood on its beam above. The character of the work is later than 1350; and the screen to which the document of 1349 refers probably underwent some alteration, or was now replaced by a new one, the central portion of which was certainly of stone.[77] Of fifteenth-century work is the crypt door, with its solid panelled screen on the south of the chancel; a window of much the same date was inserted in the south aisle, just east of the south doorway of the nave. In the latter half of the century the east wall of the north aisle was removed; the north wall of the chancel was pierced with three wide arches with slender responds and intermediate piers, poor in design and detail; and the north chancel chapel, with its large Perpendicular windows, was built. This was known as the “Corpus Christi Quire.” This has been repeatedly referred to the munificence of Richard Foxe, Bishop of Winchester, a great benefactor