The fronts of the main transepts show four stories, the two lower being divided into three bays by buttresses, and flanked by pinnacled buttresses at each side. The doors that had a ritual use have long since been walled up both on the north and south sides. A triplet window is in the lower stage, three-light windows with quatrefoil heads occupying the second, while the third has an arcade of six lancets below a floriated circle flanked by sunk panels and quatrefoils. The windows in the gable consist of two lesser windows, two-light, with quatrefoil heads, beneath a large octofoil, the whole grouped with blank panels at the side, beneath a cinquefoil moulding. The aisle has flying buttresses reaching to the clerestory, and good angle-pinnacles. The choir transept has no dividing buttresses, and a different grouping of windows. In the lower stage is a triple lancet; there is a group of three two-light windows in the story above, and in the upper one an arcade of four lancets grouped under a comprising arch with a quatrefoil in the head. The gable is lighted by a triplet window flanked with blind lancets, and terminates in a cross. [Illustration: ONE BAY OF THE NAVE (EXTERIOR), NORTH SIDE.] The transepts differ slightly in detail on their north and south fronts. It has also been pointed out that while in the one transept the lancet form rules, in the other the free employment of the circle and the quatrefoil almost foreshadows the Early Decorated style. The windows of both are so singularly pure in design and beautiful in proportion, that they have often been selected as typical examples of the best work in their style. The east front of the choir is flanked with square pinnacled buttresses. Above the Lady Chapel is an arcade with five members pierced with three windows, and in the gable a similar arrangement of five lancets, three being windows, arranged in harmony with the triangular space it fills. The flying buttresses on the south side were added by Bishop Beauchamp in 1450-58. The east front of the Lady Chapel is divided by buttresses into three bays, and has crocketed gables to each. The aisles show a lancet in the lower story, with a blind couplet beneath a quatrefoil in the gable; the central compartment has a triplet in each story. The south side corresponds in character to the north, but is partly hidden by the chapter house, the muniment room, the library, and cloisters. The walls of the latter are high, and the quadrangle they inclose entirely separated from the building, the long narrow space between being known as the Plumbery. Many consecration crosses of beautiful design are to be found on the building marking the spots touched by the oil of unction at the dedication of the edifice. (See initial letter, page 1.)