part of the Essex coast, a building known as St Peter's on the Wall, which appears to be connected architecturally with the Kentish group. Its history cannot be traced back earlier than about 653 A.D., when St Cedd was sent from Northumbria to preach to the East Saxons. One of his two chief missionary centres was the Roman city of Othona, then known as Ythanceaster, at the mouth of the Blackwater. Here he ordained and baptized: he also, says Bede, built churches in several places. St Peter's on the Wall, now long disused, stands on the site of the eastern gateway of Othona, and is largely built of re-used Roman material. It presents difficulties of site and plan which forbid us to connect it positively with St Cedd; but there is a high probability that it is his church, while, in point of plan, it is too closely allied to the Kentish group to admit of a doubt as to its connexion with those churches. The actual way in which the connexion came about is, however, a difficult problem to solve. § 2. There is much uncertainty with regard to the chronology of pre-Conquest architecture in England. From the actual masonry of the buildings it is difficult to gather much information. Saxon builders shewed little architectural skill: their methods were unprogressive; and the chief criterion by which we may estimate any degree of progress in their work is found in their efforts to develop the ground plan of their churches. The course of architectural evolution between the coming of St Augustine and the Norman conquest suffered more than one serious check. The later part of the seventh century, the age of Wilfrid and archbishop Theodore, was an epoch during which ecclesiastical art flourished. It is now that we arrive at the beginning of the history of the parish church as distinguished from the monastic missionary settlement of early Saxon times. The churches which Augustine and his companions had founded at Canterbury and Rochester were churches of monasteries, established as missionary centres in a heathen kingdom. The work of evangelisation was carried on for a century afterwards by the agency of monastic communities. The churches of Benedict Biscop at Monkwearmouth and Jarrow, Wilfrid's churches at Hexham and Ripon, the Mercian churches of Peterborough and Brixworth, were all churches of monks. But, as Christianity grew in the Saxon kingdoms, churches were naturally multiplied. Wilfrid himself was a large land-owner in Mercia, and may be credited with the building of churches upon his lands: the foundation of the monastery of Brixworth and the church of Barnack may be attributed to his influence. His example would be followed by others; and we shall not be far wrong if we look upon the private estate of Saxon times as identical with the early parish. Owners of large estates built churches upon their property; and undoubtedly the growth of church-building on private lands led to that organisation of the ecclesiastical system in