On the east side, which has been entirely remodelled in the Perpendicular period, the bay next to the tower displays from the ground to the triforium a plain surface broken only by a pointed doorway surmounted by three cinquefoiled niches with ogee crocketed hoods. The doorway retains its original doors with an ornamental iron scutcheon over the keyhole. In their great strength, and in their treatment generally, the two arches opening into the aisle resemble the Perpendicular arches of the central tower. The triforium stage is exceedingly poor, and shows traces of more or less modern disfigurement. Each bay contains a single arch which does not occupy the whole space, and which is surmounted by a hood-mould and divided into two sub-arches, but without cusps. Here again the arches were once pierced through to a gallery over the aisle, as the exterior of the wall plainly shows; and this seems to indicate either that the external roof had not been lowered when these Perpendicular repairs took place, or that possibly the two lower storeys of Archbishop Roger's wall were left standing, and have been, not rebuilt, but cased. The appearance of the wall externally suggests that these arches may have once been round, and the unusual bulk of the two aisle-arches seems further to support the theory of a 'casing.' In the clearstorey the windows have hood-moulds, but otherwise are treated much as in the nave. The southernmost contains a fragment of old glass, bearing the words 'Jhesu mercy.' Along the sill of the passage may be seen the stumps of uprights which may perhaps have supported a rail. The roof-shafts are clustered and extremely thick, and appear the more awkward in that the wall and the shafts with it are set back at the base of the triforium. In this transept the ceiling is old, and among the heraldic devices carved upon it are those of the church itself, St. Wilfrid, the See of York, the Pigotts, the Nortons, and Fountains Abbey.