[52] The buttresses of this east wall were formerly connected at the bottom by a debased battlemented wall, and the space within was used for sheds, the grooves for whose pent roofs can be seen on the sides of the buttresses. [53] The arch springs from the buttress (as an excavation in 1900 showed), and may perhaps be a relieving-arch, to take the weight off a weak place in the foundations. Yet it was not intended, apparently, to be filled up. The stones forming the right edge of the hole are coigns, and have mason-marks on their sides. At the back of the hole the masonry appears to be of some antiquity: may it be part of the foundation of the east end of Archbishop Roger's choir? [54] There are several prints of the Cathedral, as it was before restoration, in the Ripon Museum. [Illustration: CONJECTURAL VIEW OF INTERIOR OF ARCHBISHOP ROGER'S NAVE BY SIR G. G. SCOTT. (By the kind permission of the Archaeological Institute.)] CHAPTER III. THE INTERIOR. =The Nave.=--On entering through the west doors a perspective is disclosed of 133 feet to the end of the Nave, 170 feet to the Rood Screen, and 270 feet to the end of the Choir. The Early English builders have preserved two bays of Archbishop Roger's nave and have incorporated them into the west towers,[55] and the two great tower-arches which they have cut through the Transitional walling are very fine specimens of the Early English style. Each of the half-pillars that support them is a cluster of five large engaged shafts separated by very deep hollows, and upon every shaft there is a large fillet, which is carried up into the capital and down over the base. The base consists of two round mouldings separated by a hollow and fillets, and overhangs the plinth so much as to suggest that the floor just here has been lowered. The capitals and the arches themselves (which are of three orders) are moulded with rounds and hollows very strongly marked, and the hood of the southern arch terminates eastwards in a bunch of foliage.