point at which the ribs converge. At Wells and Salisbury these shafts reach only to the top of the triforium. They are so insignificant as hardly even to suggest a vertical division. At Beverley they cease a little way above the capitals of the main piers, and are still very slender. At Exeter they are much more prominent, and terminate in rich corbels reaching to the capitals of the main piers; while in the later naves of Canterbury and Winchester, not only do they reach to the ground, but they are forced so far forward, and rendered so prominent by continuous mouldings on each side of them, that they become the most significant part of the whole structure. They seem to be the columns on which the vault is supported; and we have at last the avenue of stone. [Illustration: The Nave.] The nave of York Minster was built at an intermediate stage, in which neither the vertical nor the horizontal tendency predominated. We might have expected, therefore, a design something like that in the naves of Exeter or Worcester; but the York builders were ambitious. They were determined to build a nave both lofty and wide, and with a great space for the display of stained glass. It seems likely, though we have no evidence to support the theory, that they were influenced by French example. There can be no doubt, as Professor Freeman has pointed out, that the design is more French than that of any other large English church, hitherto built, except Westminster Abbey. The most casual observer will be struck at once by the large space occupied by the glass. The clerestory is unusually large; the main arches unusually high, and thus far the greater part of each bay is filled with the clerestory and the aisle windows. With so much space given to the highest and lowest storeys, it naturally follows that the triforium is almost squeezed out of existence. Indeed, out of a total height of 99 feet, there are only about 13 between the top of the main arches and the bottom of the clerestory. It would have been almost impossible to give so narrow a triforium a separate and independent design; and, therefore, by a device often found in French cathedrals, the triforium is merely a continuation of the mullions of the clerestory windows. Behind these mullions is the customary triforium passage; but the design really consists only of two parts, the clerestory and the main arches. It is as if the lower part of the light of the clerestory windows were divided from the rest by a transom, and pierced, but not glazed, so as to let in light to the passage behind them. This is the first example of this treatment, which was so happily followed in the naves of Winchester and Canterbury, in an English cathedral. In earlier examples, even where the triforium was decisively divided into bays and had ceased to be a continuous arcading, it was absolutely independent of the clerestory, as in the transepts of the minster. There can be no doubt that the plan