The two next abbots were Andrew (1193-1200), and Acharius (1200-1210). To one or both of these may be assigned the western transept. By their time the Norman style was giving place to the lighter and more elegant architecture of the Early English period, the round arch was beginning to be superseded by the pointed arch, and the massive ornamentation which marks the earlier style was displaced by the conventional foliage that soon came to be very generally employed. Most wisely, however, the Peterborough builders made their work at the west end of the nave intentionally uniform with what was already built. Very numerous indications of this can be seen by careful observers. The bases of the western pillars, the change in the depth of the mouldings, characteristic changes in the capitals in the triforium range, and especially the grand arches below the transept towers, which are pointed, but enriched with ornamentation of pronounced Norman character, all point to the later date of this western transept. At the west wall of the church all trace of Norman work disappears. The arcade near the ground, the large round arch above the door, the great west window and its adjacent arches (not, of course, including the late tracery), are all of distinct Early English character. The whole of this wall may be held to be an integral part of the west front, and not of the transept which it bounds. When we come to the most distinctive feature of the cathedral, the glorious west front, we find we have no help whatever from the chronicles. Nowhere is there the smallest reference to its building. Other works raised by the Abbots of the period are named, but the noble western portico is never once mentioned. Perhaps the rapid succession of abbots after Acharius may account for this. The building must have taken some years, and the credit of the whole cannot be given to one. There were four Abbots after Acharius before the church was dedicated. They were Robert of Lindsey (1214-1222), Alexander (1222-1226), Martin of Ramsey (1226-1233), and Walter of S. Edmunds (1233-1245). During the abbacy of this last the church was dedicated on the 4th of October 1237, (according to the _Chronicon Angliæ Petriburgense_), or on the 28th of September 1238, according to Matthew Paris. The Bishop of Lincoln, Robert Grostête, took the chief part in the ceremony, assisted by William Brewer, Bishop of Exeter. The other chronicle calls the second bishop suffragan of the Bishop of Lincoln, which may mean no more than that he assisted on the occasion. The dedication took place in accordance with the provisions of certain constitutions which had been drawn up at a council held in London. No doubt the building had before this been completed. This date agrees well with the period which all architectural experts accept as the probable date of the erection of the west front. It may have been, and probably was, finished some few years before the dedication.