The wall of the #North Aisle# between the porch and the transept is divided into six compartments by Early English buttresses with gabled heads. This wall was built in Norman times, as may be seen from the small round-headed windows which light the clerestory, but was in Early English times faced with fresh ashlar, which conceals the Norman arcading of intersecting arches which ran along this wall. The triforium windows on this side are not, though they are on the south side, regularly arranged; there are none in the two western divisions, while between the easternmost buttress and the transept there are two. Six late thirteenth-century windows were cut through this wall--these are all of similar design; they consist of two lights under a comprising arch, with a circle in the head. The clerestory windows are of plainer character. Each window consists of two simple lancets set under a recessed arch without any hood moulding; the tympana also above the lancet heads are not pierced or decorated in any way; in fact, the whole clerestory is remarkably plain. Between the windows are flat buttresses. The aisles are covered with lean-to roofs of lead, the nave itself with a tiled roof of medium pitch. The gable at the east end of the nave, and indications on the east face of the tower, show that the pitch of the roof was once higher, and that it must have been lowered at some time after the tower was built in the fifteenth century. [Illustration: THE NORTH TRANSEPT IN 1810. (From Britton's "Architectural Antiquities.")]