"It is evident that the weight of the upper storey of the tower completed in 1321 had produced fearful settlements, the effects of which may still be seen in the triforium arches of the nave, and transepts next to the tower, which are dragged downwards and deformed, partly rebuilt, filled up, and otherwise exhibiting the signs so often seen under central towers, of a thorough repair. The great piers of the tower are cased and connected by a stone framework, which is placed under the north, south, and west tower-arches, but not under the east. This framework consists of a low pointed arch, upon which rests an inverted arch of the same form, so as to produce a figure somewhat resembling a St. Andrew's cross, to use the happy phrase applied by Leland to a similar contrivance introduced for a similar reason [but at a later date] into the central tower arches of Glastonbury." To this description there only needs to be added a mention of the circles which occupy the spandrels, and help to prevent the whole structure from seeming a mere inert mass of masonry. To appreciate the work fully, it should be looked at from some spot, such as the north-east corner of the north transept, whence the three great pairs of arches can be seen together. The effect from here is very fine, especially when the nave is lighted up, and strong shadows are cast. The extreme boldness of the mouldings, the absence of shafts and capitals and of all ornament, give them a primitive vigour, and their great intermingling curves, which contrast so magnificently with the little shafts of the piers beyond, seem more like a part of some great mountain cavern than a mere device of architectural utility. [Illustration: The Inverted Arches, From The North Transept.] At the same time as the arches were built, flying buttresses were inserted further to secure the tower, and they can be seen blocking up the triforium and clerestory of those bays, in nave, choir, and transepts, which adjoin it. Other repairs were necessary, for the pier-arches of the same bays in nave and transepts were completely shattered, and had to be replaced by the present ones, the queer-looking capitals of which contrast so oddly with the earlier work. It is instructive, also, to compare the lightness of these fourteenth-century mouldings with the boldness of those, wrought at exactly the same time, of the great inverted arches.