166 THE ESSEX NATURALIST. was covered with oak forest, before deforestation was completed, and supported 40 swine at Domesday. An area on the northern margin of the creek is still known as the Buttery Farm ; like the low lands (wicks) bordering on many creeks in south-east Essex, it was the pasture of the sheep that produced the butter and cheese. The manor had two fisheries at Domesday, which were probably keddels or weirs placed in the outlets of the creek ; they were in existence in 1381 [40] and paid rent in the time of Henry VIII. [41]. Camden (1551-1623) refers to the parish as Sea Church, and in Gibson's translation in 1772 the parish is written Sea Church in the map. Richard Newcourt [42], in 1710, refers to the parish as Southchurch, but has Sea Church in his map. Nathaniel Salmon [43], in 1740, refers to Southchurch, as "on the Shore, called for that reason sometimes Sea-church." The manors were grouped around and the activities of the parish were centred on this saltwater arm of the estuary ; it even caused the substitution of Sea Church for the original name of South Church and the nomenclature was not considered inappropriate in the middle of the 18th century. The creek probably continued to a late date and the "inning" may have been the work of the Dutch engineers who walled Canvey Island and the coast and islands on the east of Rochford Hundred in the 17th century. Before the development of Thorpe Bay the barrier was 15-16ft. above O.D., the marshland behind 8-9 above O.D., draining through several sea-gutters into the Thames. My grateful thanks are due to Mr. Reginald A. Smith and Mr. Christopher Hawkes of the British Museum for classifying the pottery on which the approximate date of the causeway depends. Mr. A. S. Kennard identified the shells collected from different parts of the causeway and the Pleistocene bed at Bournesgreen Farm. The sequence of events in the Valley of Southchurch is based mainly on his research. I am deeply indebted to him for information on many of the points raised, for reading my notes, and offering many valuable suggestions. APPENDIX. The Shells of the Prehistoric Settlement of Southchurch. 1. Pleistocene freshwater shells. From blue clay bed in river gravels at Bournesgreen Farm. 3 species.