longer is the pill a tidal inlet, being cut off by a more recent sea wall and sluice. Although the remains of a Romano-Celtic boat were discovered well inland at Barland's farm, just to the west of Magor village and Magor Pill, alluviation over the centuries and more recent drainage works and intense agricultural activity on the Caldicot Level has eliminated any signs of such trading and a short-lived activity as nineteenth century boat building. No pill of a suitable size for use by small trading ships now exists along this stretch of the coast. Between the mouths of the rivers Usk and Wye, only St Pierre Pill, not far from the mouth of the Wye, can be used by small boats. The Author Tony Jukes was born in Swindon and educated in Portsmouth and Birmingham University. In 1970 he became a research chemist at Coates Brothers in Machen before moving into teaching in 1980. Amongst his many local interests he is secretary of the Oxford House Industrial History Society in Risca. This is his second publication in this journal. Notes GwRO = Gwent Record Office 1. Colchester Pill is presumably Collister Pill. Undy parish is bounded by Magor Pill on the west and Collister Pill on the east, GwRO, D917.5, Undy parish tithe map and book of apportionment, 1842. 2. Monmouthshire Merlin, 9 January 1841. 3. See Tony Jukes, 'The Walfords The Worst Fences in Newport', Gwent Local History 92 (Spring 2002), pp. 49-56. 4. The registered tonnage was calculated from the vessel's measurement for payment of pilotage, lighthouse and harbour dues, and was always less than its true carrying capacity. 5. GwRO, D. 1847.2, Newport Shipping Register, p. 253. 6. The owners of a vessel held a proportion equivalent to their financial input of a total of 64 shares. 7. Monmouthshire Merlin, 24 June 1837. 8. Grahame E. Farr, Chepstow Ships, (the Chepstow Society and the Newport and Monmouthshire branch of the Historical Association, Chepstow, 1954). 9. GwRO, HO/107/746. 10. N. Nayling, D. Maynard and S. McGrail, 'Barland's Farm, Magor, Gwent: A Romano- Celtic Boat', Antiquity 68 (1994), pp.596-603 (Newport Reference Library, pM430.913.NAY). 11. Peter Cumberlidge, Bristol Channel and Severn Pilot, (Stanford Maritime Limited, London, 1988).