of the above-mentioned fragments of diapers on the wall within the arch, as well as on the other side of the mass, may perhaps justify us in concluding that these two surfaces are both of the same date, and that the archway was walled up originally. [Illustration: CAPITAL, SOUTH ARCADE OF NAVE (H. P. CLIFFORD DEL.).] It seems possible that we have, after all, a buttress to deal with here. It is known that the north transept and the north-west tower pier were raised before the adjoining parts to the south and west, but many have supposed that the north tower-arch was not thrown across until later. If it was built at the earlier time, a temporary support to the pier against its thrust may have been judged expedient, until the new work at the end of the nave should be completed. The mass that we are discussing seems to have been hurriedly raised with old materials at hand, and, from the carelessness which allowed fragments of old ornament to appear here and there on the surface, not to have been intended to be permanent. It was not until 1320, or later, apparently, that the design of rebuilding the nave was finally abandoned, and a junction of the new and the Norman work made. It seems, therefore, no great thing to suppose that the originally temporary support lingered on until 1327, to be then retained in connection with the oratory made, _in angulo navis_, for the Reserved Sacrament, for the parishioners of St. Nicholas. I have never seen or heard of any record as to which corner is the _angulum_ referred to. It is known, however, that provision for the reservation of the Blessed Sacrament was often made to the north of the altar, and that we find Sacrament Houses in this position in churches that possess them. [Illustration: THE NAVE, LOOKING EAST (FROM A PHOTOGRAPH BY H. DAN).] #The Aisle Walls# have the bays marked by flat pilasters, to be traced back perhaps to Early Norman vaulting shafts. Springings of the Early Decorated vaulting, that once covered the two eastern bays, are still to be seen, but the aisles are now roofed with wood throughout. String courses are continued beneath the windows, which latter have been described and commented on in our chapter on the exterior of the church. [Illustration: BAY OF NORMAN WORK IN NAVE (FROM A DRAWING BY H. P. CLIFFORD).]