=The Nave.=--The view of the interior of the cathedral from the inside of the west door is, as we have said, extremely beautiful. This beauty is much enhanced by the general appearance of unity in the whole design. There seems to be no mixture of styles, and though a closer examination of the details of the interior shows that there is a very marked difference between the style in which the nave is built and that which was in vogue when the Lady Chapel and presbytery were erected; yet the whole, having been built at a time when the Early English style was giving place gradually to the Decorated, or, in the more eastern portion, when that later style was well established, the general effect of the cathedral, seen from this aspect, is one of unity. The exact date of the nave cannot be determined, and there is no direct evidence on which to base a theory; but it is very clear, from a comparison of its style with that of churches whose history is known, that it must have been commenced and carried to a speedy conclusion about the middle of the thirteenth century. Professor Willis gives the date as 1250, and other archaeologists at various dates between that and 1280. There is no doubt, at any rate, that it was built at the transitional period of the Early English style, and it would be described by some as belonging to the Early Decorated period, and by others as belonging to the geometrical period of the Decorated style. The nave, including the western front, consists of eight bays, having aisles on the north and south sides, with the same number of bays; but the spaces underneath the two western towers are considerably larger than the other aisle bays, though not large enough to be looked upon as western transepts, as is possible in some churches where there is a similar arrangement. Many writers have complained of the insufficient height of the nave, and that the general effect is thereby spoilt, and to a very limited extent this may be true. Probably the nave roof was at one time of much higher pitch; the course on the outside of the great tower suggests it, as also does the fact that the great west window runs into the roof. Probably the roof was lowered when the presbytery was built, and the whole roofing of the cathedral brought down to the same level. [Illustration: A BAY OF THE CHOIR--INTERIOR.]