The _Nave_ is for the most part Norman. The clerestory is Perpendicular, also the windows in the north aisle. The _North Transept_ is Early English, but has been re-roofed at a much higher pitch by Sir G. Scott, who added the pinnacles and circular windows. On the east of this is _Gundulf's Tower_, built by the founder of the Norman church and probably intended for purposes of defence, and as a treasury. It seems that the only entrance to it was from the top, a bridge connecting it with a staircase in the neighbouring transept. It was afterwards used as a belfry. The north side of the choir shows its Early English character, and the presence of the dog-tooth ornament bespeaks its style. There is, however, much modern work. The high gables that call loudly for corresponding roofs were built by Scott, and perhaps some generous visitor will be willing to grant their silent appeal. The south side of the presbytery adjoins the chapter-house and library, built in the eighteenth century in place of the noble Norman chapter-house, the ruins of which still remain. The monastic buildings stood in an unusual position on the south side of the choir, and were mainly constructed by Ernulf. Gundulf's cloisters were on the south of the nave in the usual place for a Benedictine abbey, but these have entirely disappeared. In the ruins of Ernulf's monastic buildings there is much fine Norman work, zigzag and billet mouldings, his favourite diaper which is found at Canterbury, and a curious carving of the sacrifice of Isaac. Parts of the wall of the dormitory and the refectory, with a lavatory, remain. The south side of the choir and the choir transept were much restored by Cottingham in 1825. A fine Decorated window has been inserted in the south wall of the choir transept aisle. The _South Transept_ is Late Early English work. On its west side is the Lady Chapel, erected in the Perpendicular style about 1500. The lower part of the central tower, which is hardly worthy of the Cathedral, was built by Bishop Haymo de Hythe (1319-1352); all above the roof was erected by Cottingham in the restoration of 1825. The remains of the old wall which surrounded the precincts are still in existence. The Prior's Gate was built about the middle of the fourteenth century; and the other remaining gates are College Gate, and the Deanery Gate, both of which belong to the time of Edward IV. THE INTERIOR