proceeded to put in practice what he had in his view--viz., the enlargement of his church, and its dedication to divine service. On this work he expended the seventh part of the altar dues which fell to him, reserving them for his own use. But inasmuch as the outlay was small, the building made correspondingly small progress, until, by the Divine favour and the influence of the King, offerings flowed in, and the work went on apace. The basilica was thus founded, and in great part constructed.”--_Chronicles of the Picts and Scots_, p. 191. There can be little doubt that the building still surviving is the basilica of Bishop Robert. Its architectural features correspond with his date, and there is no other structure to which the above notice would apply. The similarity of St. Regulus’ in many points to the early churches of Northumbria has already been adverted to.[145] The edifice (Fig. 153) consists of a chamber 26 feet long and 19 feet 10 inches wide internally, with walls about 34 feet high. The great height of the building, as compared with its width and length, is one of the points which connect it with the pre-Norman structures of Northumbria. There appears to have been an eastern apse, of which only portions of the foundations next the main structure now remain. A lofty square tower (Fig. 154) at the west end of the oblong chamber is the most striking feature of the building. It is about 110 feet high, and measures about 21 feet 4 inches square over the walls. [Illustration: FIG. 154.--St. Regulus’. West Side of Tower.] At the east end of the main building a lofty archway (Fig. 155) opens towards what was probably the apse. The opening is 9 feet wide by [Illustration: FIG. 155.--St. Regulus’. View from South-East.] 25 feet 6 inches high. Each jamb has three attached shafts (Fig. 156), with somewhat rude caps and bases, and bold mouldings in the arch. The existence of this archway clearly indicates that there was a building towards the east of it, and we have no doubt that it was an apse; while the main building was the chancel, and the nave stood (as will be shown) to the west of the tower.