Another feature which shows that the York canons had started their work without considering whether they would be able to finish it is the omission of a stone vault, which was plainly contemplated at the outset; the pinnacles built for the purpose of weighting the buttresses against the thrusts of a stone vault still existing on the south side. When the north side was built, the canons had abandoned hope of vaulting the nave in stone, and so did not put up big pinnacles. It is well to remember, however, that the exterior of the nave was designed originally to have flying-buttresses and big pinnacles on both sides. In the end, as in Selby choir, a sham vault of wood was put up. One cannot help regretting these shams. It would have been Gothic to recognise honestly that the ceiling was wood, and to design it in wood and not in lithic fashion. Then we might have seen an English Gothic cathedral with such a hammer-beam roof as that of Westminster Hall: very magnificent it would have been.
Side by side with the nave went up the chapter-house. It belongs to the middle of the Geometrical period, c. 1300; later in character than its sister at Southwell, and but little earlier than the chapter-house of Wells. Externally, it is provided with buttresses and pinnacles and flying-buttresses and flying bridges to resist the thrusts of a stone vault. Yet no stone vault is there, but another sham vault of wood. The detail of the chapter-house, inside and outside, is of exquisite beauty.
At first the chapter-house was a detached building, but a vestibule was soon added. Parapet-mouldings of the chapter-house may now be seen inside the vestibule.
A very curious and bold specimen of mediæval engineering may now be mentioned. If the western bays of the great transept next to the central tower be examined, it will be seen that in the clerestory and in the triforium these bays are exceedingly narrow, but that in the ground-story the narrow arch corresponding to the narrow bays of the triforium and clerestory has been moved, and a wider arch substituted. The fact is, when the transept was completed, the Norman nave, which was still standing, had a very narrow aisle. Consequently the builders of the transept built a pair of narrow arches, on either side of the central tower, leading from the transept into the Norman aisle. Later on, as we have seen, the Norman nave and aisles were pulled down, and the present nave was built. Its aisles are exceptionally broad. The result was that the piers of the two narrow arches found themselves in the very middle of the new broad aisles of the nave—a most awkward obstruction to processions passing from aisle to transept, or vice-versa. So the triforium and clerestory was underpinned, the Lancet piers next to the tower were taken down and then put up again clear of the aisles, and the two arches also on either side of the tower were taken down and rebuilt with the same stones, each in the place of the other. The result is that, counting from the end-walls of the transepts, in the triforium and clerestory there are three of the bays wide and one narrow, while in the ground-story there are two wide, one narrow, and one wide bay. Similar changes took place on the eastern side of the transept when the choir was built.
Later on, when the central tower was built, its great weight sank the piers on which it rests eight inches into the ground, and the adjoining masonry was dislocated. The result was that it was found necessary to rebuild the third piers on both sides of both transepts (counting from the end-walls) as well as the first pier on the western side of the north transept, and at the same time to block up all the four narrow arches with solid masonry (cf. Carlisle, and Exeter).
IV. The west front of the nave was not finished till the very end of the Curvilinear period, to which period belong also the treasury and sacristy, and also Archbishop Zouch’s chapel, unless the latter was rebuilt c. 1396.
CHAPTER-HOUSE ARCADE.
V. Immediately that the nave was roofed in, the canons commenced to rebuild the eastern limb. Meanwhile architectural fashions had changed. While the York people were lingering over their Geometrical nave, a whole architectural period had passed away, leaving behind few traces at York except in the west front. When the new choir was commenced in 1361, the Curvilinear style had disappeared before the new Perpendicular style, invented at Gloucester and taken up by Bishop Edingdon at Winchester. The style, however, was still new, and though the Winchester work is purely Perpendicular, the York design still retains in the window tracery reminiscences of the flow of curve that Edingdon and Wykeham had replaced by grilles of horizontal and vertical bars.
Only the eastern part of Archbishop Roger’s Transitional work was at first pulled down, the services going on without interruption in the western bays. The four new eastern bays—designed as a retro-choir, the altar standing originally one bay more to the west than at present—may be distinguished at once externally by the unusual feature of having an external instead of an internal arcade to the clerestory; this gives a fine play of light and shadow.