§ 33. On leaving the quire by one of the upper entries, the Sunday procession first visited the altars in the transept on that side, and, while the celebrant sprinkled each with holy water, anthems were sung by the convent. The transept-chapels varied in number. In the great abbey churches of the Norman period, as at Norwich, Gloucester and Tewkesbury, a single apsidal chapel projected from the east wall of either transept. In churches with short presbyteries, such chapels formed an effective group with the apse and its chapels. Thus at St Mary's, York, and St Albans, where the plan of the eastern apse without a processional path was followed, the apse, projecting beyond the rest of the church, was flanked on either side by a row of three chapels, of which two opened out of the transept; and of these two, the inner one, nearest the aisle, projected further east than the outer. At Durham, Ely and Peterborough, the transepts were provided with eastern aisles, divided by low screens or perpeyn walls into three chapels on either side. There were thus in the plan of these three churches, eight altars in the transepts and presbytery aisles: at St Mary's, York, and St Albans there were six: at Westminster four; while at Norwich, Gloucester and Tewkesbury, where there was a processional path round the high altar, there were five. § 34. The lengthening of the eastern limbs of monastic churches, of which an early example was the enlargement of Canterbury cathedral, completed in 1130, provided additional chapels and a clear course for the procession at the back of the high altar. At Canterbury, the new eastern limb was as long as the nave and crossing together: the quire was moved into its western part, and additional transepts, each containing two chapels, were thrown out on either side of the new presbytery, while three chapels opened out of the processional path which encircled the apse. In this plan the night-entry was a doorway in the eastern transept. In the second rebuilding, some fifty years later, the plan was lengthened further to include a chapel for the shrine of St Thomas between the high altar and the ambulatory. Although in several cases, with the lengthening of the eastern limb, the quire was transferred to a position east of the transepts, this alteration was by no means general. In the thirteenth century rebuilding at Westminster, the high altar, presbytery and quire remained in their old places, and the additional space in the new apse was devoted to the chapel and shrine of St Edward. The plans of Canterbury and Westminster were both elaborate versions of the Norwich and Gloucester plan. But, while this type of plan prevailed in the great churches of France, the plan which was preferred in England from the beginning of the thirteenth century onward was a long rectangular eastern limb. At Winchester and St Albans, the longest of our great churches, the quire did not extend