For the moment we will leave the ambulatory, and consider the =Choir and Sanctuary=. It will be interesting, before we examine the present state of these parts, to sketch briefly their aspect in the fourteenth century. Corrozet and De Breul have left us descriptions which have been illustrated and elucidated by the indefatigable Viollet-le-Duc. The entrance to the choir at the crossing was filled by a magnificent screen of stone richly adorned with carving. This was about eighteen feet high. The top formed the rood-loft, which was approached by two circular staircases placed at either end of the screen. In the centre was, of course, the entrance to the choir. When the doors were open the high altar could be seen from the end of the nave. Over this door was a decorated gable terminating in a great crucifix. According to De Breul this crucifix was a masterpiece of sculpture, as were the other statues which composed the group. The loft was broad, and had on both sides an open stone parapet, on which were placed carved lecterns. The west front of the screen had sculptured scenes of the Passion, which formed part of the series by Jehan Ravy and Jehan de Bouteiller lately described. On either side of the doorway, beneath the sculptures, were small altars. The choir-stalls of carved wood occupied much the same place as do those which we see to-day. Between the rows of stalls were low tombs with recumbent figures. The Sanctuary, approached by steps, was railed off, and filled the apse. The space between the columns was filled by a screen with carved scenes, which rose almost to the level of the bases of the capitals. The altar was low, and of stone, and possessed a re-table on which was placed a cross. Enclosing it on all sides, save that towards the church, was a screen with hangings of tapestry. At the four corners of this screen were tall figures of angels. Immediately behind the altar, and towering over it, was the shrine of St. Marcel, a lofty open structure of brass and other metals in two stages, ending in a gable at the apex of which rose a crucifix.