Having now referred to the very doubtful instances of continuity represented by fabrics in which there has been an adaptation of Roman materials, and having glanced at those churches which stand on the sites of earlier buildings, we turn to Christian edifices which have been built adjacent to Roman camps. At present, we will consider those cases in which there is actual contiguity, but only a suggestion of purposiveness. The ivy-clad church of Ashtead, in Surrey, stands within a rectangular earthwork, partially defaced, and the visitor will readily detect Roman tiles in the walls of the chancel. At Rivenhall, in Essex, tesserae and Roman pottery were dug up in the churchyard, and a villa was unearthed in the neighbouring field. From the data available, one cannot decide whether or not a camp is indicated[32]. In the same county, we notice Stoke-by-Nayland, while Suffolk supplies us with the camp Burghcastle--a most interesting example. St Furseus, or Fursey, built a monastery at this spot, but there remains only the church, which lies a little to the north of the Roman fortifications. Its walls contain triple bands of flints, faced by Roman workmen, while vases and potsherds have been discovered in the vicinity[33]. Squared flints of Roman workmanship were also found at Caister by Norwich[34]. The church of St Edmund, at the last-named village, was built by Mediaeval architects at one corner of a Roman earthwork, which encloses an area of 34 acres. The present church, as Professor Haverfield points out, is certainly not a Romano-British “sacellum” or temple[35], but, in the absence of excavations, one cannot assert that no earlier ruins lie buried underneath the edifice. The oft-quoted instance of Castle Acre, also in Norfolk, must be dismissed as spurious. Professor Haverfield, who has carefully examined the evidence, could find no proofs in support of the tradition of a camp, though there was evidence of Roman occupation in the neighbourhood[36]. Under the present section, however, we must include Market Overton and Great Casterton in Rutland. The church of the latter village is situated at the south-west angle of an earthwork, presumably Roman, though of earlier construction than the Roman road hard by[37]. At Market Overton, the church stands entirely within a square Roman camp[38]. In the adjoining county of Lincolnshire, we get examples at Caistor and Ancaster[39], places bearing tell-tale names. The church of Horncastle is within a few yards of a Roman wall, a portion of which remains visible above the land-surface[40]. Lincoln Cathedral is built partly within and partly without a Roman camp[41].