"The style of these spires, with the parapets and pinnacles, marks them out as a later work than the turrets beneath; and we may infer from the similarity of their details to those of the porch, that they formed a part of the repairs and alterations which the whole front appears to have undergone when the appendage was inserted; and when the central window of the nave was enlarged, and that, and the others which now enliven the inner wall, were filled with perpendicular tracery. The porch is vaulted with stone, and is entered by an obtuse arch, over which is an elliptical window, divided by mullions into six lights under cinquefoil arches, which are again subdivided in the head into lesser arches. "The spandrils formed by the curve of the arch, and the base of the window, are enriched with circles, clasping shields of arms, and rosettes with other devices. The arches and windows are bounded by buttresses, which are broken by offsets and empannelled with niches. Besides these, the porch is flanked with staircases, one on each side, forming three parts of an octagon, and leading to an apartment now used as a library. The summit is closed with an embattled parapet, having a pediment at each end, and one in the centre. The surface of the walls is enriched with canopied niches, pilasters, brackets, panel work, and string courses in all the wildness and profusion which distinguish the last stage of gothic architecture. "Besides the arch before mentioned, the porch has two smaller arches, north and south, parallel with the piazza formed by the great arches and piers of the front, and keeping up the communication with its opposite extremities. Over these also are mullioned windows with blank interstices. "The great window of the nave, the outer arch of which is obviously an alteration from the original design, is divided by mullions into five lights,--those of the side aisles into three lights, both under cinquefoil arches, and the lancet windows of the transepts into two lights, under trefoil arches: these windows are parted, each by an embattled transome into an upper and lower range of lights, and the heads filled with subordinate tracery. "The door-ways beneath are exceedingly rich, and in point of execution and delicacy of detail perhaps the finest portions of the front. The central door-way is divided by a pillar, rising from a carved cylindrical base into two smaller arches; but the whole design and finish cannot be made out, in consequence of the introduction of the porch, the foundation and butments of which are built against it.