The _Lady Chapel_ is of Early English design, and was built about 1266, previous to the present choir. Many alterations were made subsequently, including the removal of the ancient steep and lofty roof and the substitution of a flat roof, and the insertion of Perpendicular windows. Most of these additions have been removed and the Early English character restored. The east window of five lights was designed by Scott, and the original form of the roof has been restored. The vault, which is original Early English, has a boss representing the murder of Thomas à Becket. The mosaics were designed by Sir A. Blomfield. Here the consistory court was held at the time of the Reformation, and George Marsh, the Chester martyr, was condemned to be burnt. The _Monuments_ in the choir and Lady Chapel are to the memory of Dean Howson, Bishop Graham (1865), Dean Arderne, an altar tomb to an unknown person, and the famous shrine of St. Werburgh, of fourteenth-century work, which is of exquisite design and construction. It was richly ornamented by figures. There was a great resort of pilgrims to this shrine in mediæval times. The pavement of the choir is worthy of attention. It is modern; around the lectern are the heads of the twelve Apostles, and of the four doctors of the Church--SS. Ambrose, Augustine, Athanasius and Chrysostom. On the east end are representations of the Passover, and some fragments of tesselated pavement are inserted here which came from the Temple at Jerusalem. The stained glass is all modern. The Cathedral has a rare treasure of the seventeenth century, a carved narwhal tusk, beautifully carved by a Flemish artist. It is thus described by the dean: "The leading subject is the Incarnation of our Lord Jesus Christ, passing on to the exaltation of the Cross.... A Jesse tree occupies about 3 feet, and above is seated the Blessed Virgin with the Holy Child. Higher up is the Cross with the figure of our Saviour, whose countenance is full of compassion.... St. Michael thrusting down Lucifer with a cross; the figures of SS. Peter and Paul and the four Evangelists; St. Anthony of Padua and another monk holding up a cross, and figures of angels, each holding in uplifted hands a cross." [Illustration SHRINE OF ST. WERBURGH]