Whether the Norman nave had only been projected, but never completed--only the west wall with its doorway and windows and the south doorway being erected--or whether the nave had been finished and afterwards destroyed, it is impossible to say. It is, however, evident that the Norman work in the choir and in the western and south doorways must have preceded the Transition work in the choir and nave by a considerable amount of time. The styles in both cases are quite distinct, and there is evidently a considerable hiatus between them. They do not follow one another by gradual development. The nave is 129 feet in length and 27½ feet in breadth in the central aisle, and measures about 57 feet in width internally over the aisles. It is divided into nine bays, each of which (Fig. 368) comprises a main arch resting on clustered piers, a triforium with one round arch containing two pointed arches, and a clerestory forming a continuous arcade, with four pointed arches in each bay. The main clustered piers contain (Fig. 369) four principal shafts at the angles and four intermediate shafts between them. The former are brought to a point on the face, the latter are flatter. The caps are simple and of an ordinary transitional [Illustration: FIG. 367.--Jedburgh Abbey. South Side of Choir and Crossing.] [Illustration: FIG. 368.--Jedburgh Abbey. The Nave, looking West.] form (Fig. 370), each with a square abacus. The bases are also simple and stand on a massive square plinth, a feature not uncommon in Norman work. The arches of the main arcade are somewhat acutely pointed, and the mouldings are bold, and resemble first pointed work. (See Fig. 369.) [Illustration: FIG. 369.--Jedburgh Abbey. Details.] In the triforium (Fig. 370) the principal arches are round, being an example of the round arch placed above the pointed arch. Each round arch is divided into two openings by smaller pointed arches, which contain first pointed mouldings (Fig. 371). The larger arches spring from clustered [Illustration: FIG. 370.--Jedburgh Abbey. Details.] shafts with bell caps and square abaci. The central pillars of the smaller arches vary in section. Those in the east part of the nave consist of four shafts united into one (being the same section as those of the clerestory of the choir), while those in the portion of the nave to the west of the centre are composed of two shafts. The shield between the smaller arches is perforated with a small circle. The simple constructional main arches of the triforium are seen on the exterior (Fig. 372), where also the corbels to carry the timbers of the roof of the triforium gallery are visible. [Illustration: FIG. 371.--Jedburgh Abbey. Plan of one half Bay of Clerestory.]