All traces of this Saxon cathedral disappeared long ago, and its exact site was forgotten and remained unknown until portions of its foundations were discovered in 1889, during the underpinning, preparatory to restoration, of the present west front.[1] Beneath this front, but only for a little way within it, the older foundations extended. They were of hard concrete, from 4 to 5 feet deep and wide, and still carried fragments of the walls, about 2 feet 4 inches wide, of tufa, sarsen, and Roman brick. These remains, on examination, proved to have belonged to the east end of a building, which, in this direction, terminated in an apse that occupied almost the entire width. The southern junction of this apse was found first within the present church; and later, in lowering a gas main under the road outside, the north-east corner of the nave was discovered. The internal width of the building was then ascertained to be about 28 feet 6 inches. The lines of the north and south walls were followed by means of a probe across the old burial ground westwards as far as the road, running from the High Street to Boley Hill, and the foundations of the west wall lying along its side. These researches revealed no signs of aisles, quasi-transepts, or porch. If a western porch or apse ever existed, and has left any remains, these remains must lie beneath the road, so that excavation would be necessary to get at them. It has been conjectured that the west, as well as the east end, terminated apsidally. There would then have been placed, in the one apse, the high altar of St. Andrew, with the tombs of St. Paulinus, the apostle of Northumbria, and of St. Ythamar, the first Englishman to attain the episcopal dignity. Both of these died as bishops of Rochester, and they were buried in its cathedral in 644 and 655 respectively. The other apse, for this is possibly the right meaning to assign to "porticus" in the following quotation, would have contained the altar of St. Paul, and the tomb of Bishop Tobias, who is recorded to have been buried "in porticu Sancti Pauli apostoli, quam intra ecclesiam Sancti Andreae sibi ipse in locum sepulchri fecerat." The tracing of the foundations of a straight wall at the west end proves nothing, I think, against the existence of this "porticus," be it porch or apse, beyond. We know that it was a later addition by Bishop Tobias himself, and it is not to be supposed that, when he cut away part of the old wall to unite his work to the building, he would have taken the trouble to dig beneath the surface and remove the foundations too. It is to be hoped that at some time in the future all the remains of the old Saxon church, under the burial ground and under the road, will be uncovered, and its complete plan thus, beyond all cavil, ascertained. [1] A full account by the Rev. G. M. Livett in Archaeologia Cantiana, xviii.