It has been remarked that the termination of the early chancel towards the east was an apse, and that round this was carried the north and south choir aisles in the form of a continuous ambulatory. From this enclosing aisle--a semi-circle itself in form--three chapels were projected, each with a semicircular apsidal termination. The central one of the three was the lady-chapel. This consisted then of the three western bays only of the present chapel. The lady-chapel was added about eighty years after the early part of the nave had been built, and has since been much altered. The presence of this grouping of features is indicative of that influence which Continental architecture had exercised upon English art, and now that Norman government had been established that influence became more directly French. But though so strongly affected by this means, Anglo-Saxon character was always evident in work which was a native expression of the thought and personality of those by whom it was executed. Thus we see that the plan which Ralph approved for the new church that was to be built for him at Chichester was devised according to accepted traditional arrangement. He adopted no new idea when he decided what general form the cathedral should follow. The disposition of the several parts differed in no wise from that which had been followed during centuries before. The requirements of ritual had decided long since what were those essential features of planning to be insisted upon, for the pattern in germ was shown in the arrangement of the Mosaic Tabernacle. In the earliest plans the same distribution of parts was observed, though at a later date the transept was introduced--an idea which no doubt had its origin in some practical necessity, and was afterwards retained as being representative of an ecclesiastical symbol. Of the practical and artistic character of the architectural details we shall see more in examining the exterior and the interior of the church. These will lead us, of necessity, to deal more with archaeology in its relation to the history of architecture rather than of this particular church as a building used for ecclesiastical purposes.