“It is continued from the face of the north transept, which it slightly exceeds in point of elevation. The external work is Decorated; the east is flanked by two flat buttresses of very singular character, which are terminated by rich pinnacles, now mutilated. Equally singular is the buttress dividing its two bays on the north side; flat at the bottom, after its first stage its projection becomes angular, and so runs up the whole height of the wall, becoming much smaller in its upper portion; its pinnacle is quite destroyed (but is now restored). At the junction with the transept a staircase is attached, in a singular and almost indescribable way, to the upper portion of the broad pilaster at the north-east corner of the transept....The east end has a very strange appearance, having three windows over each other, and a niche, not unlike a window, above all; that in the third stage is a blocked spherical triangle (now restored). The lower part of the wall is of ashlar, the occurrence of which is so rare in the exterior of this church; the upper is of rubble, excepting the buttresses.” Butterfield is responsible for the large Decorated window in the =North Transept=, and Scott raised the roof to its original pitch and rebuilt the north-west angle turret. In the west wall are two Transitional windows (but the northern one has long been filled in), and above is a corbelled parapet. Below, but at a lower level than the transept floor, is a doorway to the cloisters, with a semicircular outer arch having a solid tympanum and segmental head within. At a contemporary period half, and much later the whole, of this entrance was built up, and in the recess thus formed was placed a lavatory and drain. The east wall of the cloisters connects St. Mary’s College with the north transept. An imposing view is obtained on going through the door at the north-east corner of the cloisters. We now see the north side of the nave, with flying buttresses supported on huge masses of masonry, the ruins and graceful tower of St. Mary’s and, in the distance across the Alan, the magnificent ruins of the episcopal palace. The =North Doorway= (see p. 80) corresponds in position to the south porch, and is a good example of a Transitional (Norman to Early English) doorway, but it is much decayed. The principal ornament is, like those in the arcade, a kind of hybrid composed of the Norman chevron and the Early-English dog-tooth ornaments. There is a depressed arch to this doorway, which, with other evidence, leads us to suppose that it has been higher. Another feature which calls for comment--it is the same in the arcade but in less marked degree--is that no matter what the size of the stone, a complete part of the ornament has been carved upon it, thus obtaining an irregular but not unpleasing effect.