"The interstices above contain two trefoil arches, with brackets at the base for the figures. The mouldings of the outer arch, with the sides of the pillars and all the sub-divisions, are studded with the dog-toothed quatrefoil. In the fourth stage, are two deeply recessed pointed arches, resting on clustered pillars; immediately over these is a string course of stemmated trefoils, which is continued round the front, the transepts, and the base of the north-west tower, together with the more modern base towards the south. In the fifth stage are four trefoil arches, like those of the second stage: these lie parallel with those at the base of the pediments, already described, and with those also of the side transepts. The sixth stage contains four long and narrow pointed arches, having corbels in the space above, and resting, like the whole series of arches below, on slender isolated columns, with prominent foliated capitals: above these is a string course of rosettes, forming the base of the parapet. Thus far the two turrets are strictly uniform; but in the parapets, by which they are surmounted, and in the pinnacles, which terminate the clustered shafts, there is a marked difference. "The parapet of the north turret consists of the wave ornament, with double featherings and intersections: the pinnacles at the angles are hexagonal, corbelled at the base of the pyramid with human heads, and finished above with crockets and finials. "The parapet of the south turret contains a series of quatrefoils, while the pinnacles at the angles are beautifully blended with the clustered shafts, so as to form a regular and continuous course and termination; the mouldings are carried up in high pointed pediments, and from these a cinquefoil arch at each angle, surmounted also by a pediment, with a quatrefoil in the spandril, connects them with the spire in the centre, and sustains a lofty triangular pinnacle, which, like the pediments below, is decorated with crockets and a finial. In this respect the south spire differs from the other, which has no connection with the side pinnacles. Both are pierced with pointed windows in two ranges, four in each range, divided by mullions, and crowned with crocketted pediments; and the apex of each is terminated by a finial and a cross, included in the extensive repairs carried on by the present dean[27] and chapter.