270 ON THE ARCHITECTUEE OF 111 like manner, in St. David's Cathedral, the approach from the nave aisles into the transepts is not, as usual, by open arches, but by doorways exactly analogous to this, and similarly having their external face to the west, as indeed is but natural. The external juncture of the two chapels also presents some apparent difficulties. I have already alluded to the perceptible break in the masonry between them (at h). The appearance presented at first sight is that of an eastern buttress to the western chapel with the wall of the eastern cliapel built up against it. But besides that this is rendered impossible by the relative dates of the two chapels, otherwise distinctly proved, the piecing in the upper part of the wall is such as to show that it can hardly be a real buttress so treated. In part of the seam, how^ever, we may most certainly discern a quoin to the west with rubble built up against it to the east. This would, at first sight, seem to show that this wall is older than the south aisle of the choir. Yet in another part of the same seam the respective positions of the rubble and ashlar are reversed ; which brings the evidence back to where it before stood. The key to these perplexing appearances has been supplied by Professor Willis. The traces are traces of a buttress, not however of an eastern buttress of the western chapel, but of another of the pedimented buttresses of the eastern one, destroyed at the time of the western addition. A little consideration will readily show that its removal, and the consequent patching, might easily account for all the appearances already recounted. At the w^est end also, some alterations were made in the front previously erected. I am indebted to the same high authority quoted in the last paragraph for the fact that the small buttresses were now added to the turret in a different stone. Perhaps also the small pinnacles were added or tampered with. A western doorway was inserted, exactly similar to that in the south wall. The external string over this is of the later form, the same as that emplo^^ed on the south wall, while the original one, similar to that of the south choir aisle, is preserved on the turret.^ - The juncture of these strings is effected same stone. It has been ingeniously re- far more artificially than the similar marlved by Mr. Jones, that the later string, change in the north choir aisle ; at both which contains a cavetto, might have been points of contact they are worked in the hollowed out of the elder one.
