In this foundation Walter De Merton was the first to express the only true idea of a college. Once expressed, it was followed by every succeeding founder. The collegiate system revolutionised University life in England. Merton was never tired of insisting upon the one great claim which his community should have to the loyalty, affection and service of its members. It was this idea which has produced all that is good in the system. To individual study in the University schools was added common life; to private aims the idea of a common good. "The individual is called to other activities besides those of his own sole gain. Diversities of thought and training, of taste, ability, strength and character, brought into daily contact, bound fast together by ties of common interest, give birth to sympathy, broaden thought, and force enquiry, that haply in the issue may be formed that reasoned conviction and knowledge, that power of independent thought, to produce which is the great primary aim of our English University education" (Henderson). The founder, who had long been busy acquiring property in Oxford, had impropriated the Church of S. John the Baptist for the benefit of the college, and several houses in its immediate neighbourhood were made over to the scholars. The site thus acquired (1265-8) became their permanent home and was known henceforth as Merton Hall. Of the buildings which were now erected and on which the eyes of the founder may have rested in pride and hope, little now remains. The antique stone carving over the college gate, the great north door of the vestibule of the Hall, with its fantastic tracery of iron, perhaps the Treasury and Outer Sacristy are relics of the earliest past. But Chapel, Hall, Library and Quadrangle are later than the Founder. As if to emphasise the ecclesiastical character of the English college, he had begun at once to rebuild the parish church as a collegiate church. The high altar was dedicated in the year of his death, 1277; the rest of the chapel is of later dates. The choir belongs to the end of the thirteenth century (1297), (Pure Decorated); the transepts (Early Decorated, with later Perpendicular windows and doors) were finished in 1424, but begun perhaps as early as the choir; and the massive tower, with its soaring pinnacles, a fine specimen of Perpendicular work, was completed in 1451. It will be noticed that the chapel has no nave, but that, probably in imitation of William of Wykeham's then recently finished naveless chapel at New College, the nave which had evidently been intended was omitted at Merton (after 1386). Two arches blocked with masonry in the western wall and the construction of the west window indicate this original intention of adding a nave. The old thirteenth century glass in the Geometrical windows of the chancel is of great interest. The arms of Castile and the portrait [Illustration: Oriel College]