The windows in the south wall correspond generally with those in the north, and exhibit the same graduation of enrichment. In the window in the eastern bay there are two circular bosses of foliage in the spandrels of the internal tracery;[72] in the opposite window these circles are plain sunk circles without any sculpture: and it appears that the architect, wishing to avoid the expense of sinking the whole surface of the stone, so as to leave the sculpture in advance of it, let in his bosses into a rebate in the stone work. This is a very rare mode of construction, but appears to be perfectly lawful. The east window of the north aisle is richer than any of the others in the nave. It is of four lights, with two marble shafts in each jamb, and one in the centre monial. The tracery has quatrefoiled circles over the side-lights, under enclosing arches, and a large cusped circle in the head: the arch is extremely pointed. The mouldings throughout are more delicate than anywhere else in the church, and the large circle has a dogtooth enrichment. Externally this window is exceedingly simple: the rich mouldings of the interior being changed to a plain chamfer and broad flat tracery bars, very peculiar in their effect. This window was entirely blocked up, the cusping in the tracery concealed, and a four-centred brick arch under it connected the aisle with the Wilshyre chantry. We have taken away this brick arch, restored the old jambs and sill, and supported them on a flat stone arch. The flat roof of the chantry crosses the window just below the springing, and the portion above is to be glazed with stained glass, whilst that below is open through to the chantry. This was the best arrangement that could be made with the double object of preserving the old window in all its integrity and yet making the chantry available for use by the congregation. The east window of the south aisle is much less magnificent than that last described: it is of two lights, with two marble shafts in each jamb, and an engaged stone shaft in the monial. Externally this window is remarkable for the curious freak by which the outer chamfer is gathered in with a curve some six inches on each side just at the springing.