The Transepts.—Leaving the choir by its western end the visitor at once enters the transepts. A large portion of these, including the great piers and arches which carry the central tower, are, without doubt, of the time of Carileph. The eastern side of both is certainly his work, while the western is probably the building which was carried on by the monks in the interval between Carileph's death, in 1096, and the appointment of Flambard to the see in 1099. The work on the eastern sides differs little from that of the choir, while that of the western sides, being plainer, has been thought by some to indicate a want of means on the part of the monks, while carrying on the work in the interval just alluded to. Each transept consists of two bays, with an aisle on the eastern side, access to which is gained by the ascent of three steps.
Each of the three sub-bays nearest the north and south extremities originally contained an altar, those in the north transept being dedicated to S. Nicholas and S. Giles, S. Gregory and S. Benedict. Over the site of the latter may still be seen remains of fresco painting. The altars in the south transept were dedicated—one to S. Faith and S. Thomas the Apostle, one to our Lady of Bolton and the other to our Lady of Houghall. The north transept is closed by a large window, which is the work of Prior Fossor, probably about the year 1362. The window is of six lights, and the head contains late geometrical tracery. The architectural feature of this window, especially for its date, is the transom which crosses the mullions, and which is not visible from the exterior. Below the transom is a second inner set of mullions supporting a small gallery, by means of which access may be had to the triforium. In the year 1512 the window was repaired by Prior Castell, who filled it with stained glass containing large figures, among others of S. Augustine, S. Ambrose, S. Gregory, and S. Jerome. From this circumstance the window became known as the window of the Four Doctors of the Church. Prior Castell also contrived to introduce a figure of himself kneeling at the feet of the Virgin. The large window at the end of the south transept, also named from the glass it contained, the Te Deum window, is in the Perpendicular style, and is of six lights. It may possibly have been the work of Prior Wessington, 1416 to 1446. Along the sill of this window also access may be had to the triforium.
Both the north-west and south-west corners of the transepts contain stairways, opening at their various levels on to the triforium, clerestory, and the space between the vaulting and the roof. That in the south transept also gives access to the central tower and belfry, an ascent of which, if the day be clear, will repay the visitor for his fatiguing climb of three hundred and forty steps by the magnificent view spread at his feet. The transepts were no doubt the earliest part of the building to be vaulted; that of the northern arm being plain is probably the earlier, while that of the south arm, though of similar character, has zig-zag ornaments. Several of the priors of Durham were buried in the transepts, the first, Prior Fossor, 1364, and the last, Robert Ebchester, who died in 1484.
On the piers of the transepts projecting brackets may be noticed. These are of Perpendicular date, and originally carried statues.
The crossing, or space between the four piers supporting the central tower, gives us a fine view of the interior of the lantern.
The Tower is carried on four large clustered Norman piers with semi-circular arches. Over the arches, and seventy-seven feet above the floor of the church, is the lower stage of the lantern, round which is a gallery with an open pierced parapet. It rests on corbels, each alternate one being carved with a grotesque head. The walls are panelled up to the base of the great windows,—each panel having two cinquefoiled arches under a crocketed canopy and final; while between them are small buttresses, also panelled, and ending in a finial which reaches the same height as the canopy. Over the panelling is a string course ornamented with that characteristic ornament of the Perpendicular period, the Tudor flower, and above this on each face two tall windows near together. Each window has two lights, and is divided by a transom. The roof of the lantern is groined, with fine bosses at the intersections of the ribs. The whole seen from below has a very fine effect, and must be very different in appearance from the original Norman structure. The whole of the lantern was refaced, and the statues which had been removed from their niches were replaced, some thirty years ago, by the Dean and Chapter of Durham.
