The side chapel _on the north_ has a groined roof, in which the cusps of the foils and other portions are pierced with minute circular hollows, adding much to the elaborate effect. The panelling of the west wall has been filled by the upper part of the monument of Bishop GODFRED, (died 1604). Below is an altar-tomb with effigy. The upper chapel, or oratory, is approached by a staircase on the west side, opening from the bay below; it has a lierne roof, with bosses of leafage. The _south_ chapel resembles the north; and contains a flat altar-tomb for THOMAS FITZWILLIAMS, (died 1579: it was repaired by his descendants in 1648). The east window is covered by the hideous monument of Bishop NICHOLSON, (died 1671). The upper chapel resembles that opposite. These chapels were apparently the chantries of the two abbots who built the Lady-chapel; the upper stories, in which there is no trace of an altar, serving as oratories. On the north side of the Lady-chapel is a monument with effigy for ELIZABETH WILLIAMS, daughter of Bishop Miles Smith of Gloucester, (died 1622). Below, again, is a full-length statue of Sir JOHN POWELL, (died 1713)[20]. XV. The _south choir-aisle_ resembles that opposite. The south-east chapel opening from it retains its Norman work more completely than the north-east. The Norman arches and windows remain; the latter filled with Perpendicular tracery. As in the chapel opposite, the altar did not front due east. A door on the platform above the steps descending to the transept opens to what was originally the east chapel of the transept itself. The arrangement resembled that of the south-east chapel. The arch of entrance from the transept (transitional Norman, and pointed) remains, walled up. Under the three eastern windows is a rich Perpendicular reredos, with three niches for figures. XVI. The _triforium_ of the choir is reached by the staircases at the angles of the transepts, and through the open arcade at their north and south sides. The triforium originally extended quite round the choir, the whole width of the choir-aisles, opening into chapels corresponding with those below. With the exception of the east end--between the south-east and north-east chapels--it remains entire; of late Norman character, with some alterations made during the Decorated period.