On the south side also of the screen, there is a second stair leading to the loft, formed in the thickness of the screen wall of the first bay of the south choir aisle, lighted by a pierced quatrefoil, and approached by a small ogee-headed archway, to be reached by a short step-ladder. This, it has been stated, was for the use of the custodian of the choir, and from its smallness could never have been used by priests arrayed in canonicals. The eastern side of the screen is formed by the return stalls, and over the entrance there is a projection of half polygonal shape, and of much the same date as the choir-stalls themselves. It is noteworthy that the eastern doorway in the stone screen has a deep moulding running round the arch, with traces of colour as a finishing touch, evidently intended to be seen, before the woodwork of the stalls was placed in front of it. I may here mention that the date of the stone screen has been generally considered to be about 1320, and that of John of Welbourn’s choir-stalls about 1380. This projection is coved, and some of the ribs run down to the doorway, but it is curiously and mainly supported by horizontal beams running westward from the projection for half their length over the floor of the loft, and being bolted through that floor at their western ends. Four uprights pass downwards from the floor of the projection, two of them to the floor of the choir, which two are stopped by responds at each side of the stone archway. On reaching the loft, there is a broad seat of stone extending the whole length of the loft on the western side, above that a broad band of elegant diaper-work, surmounted by a parapet pierced with trefoils alternately erect and inverted, and finished with a battlemented cresting.