construct a culvert beneath the River Glen. It was to be maintained by John Heathcote, who owned the land. The culvert, subsequently known as Gilbert Heathcote's tunnel, allowed water to drain into the Slacker Dyke, now called the Counter Drain, from where it flowed to Pode Hole. The South Fen was enclosed in 1772, and ceased to pay taxes to the Adventurers by an Act of Parliament obtained in 1738. A subsequent Act ensured that if the Deeping Fen Trust ever lowered the bed of the Glen, they would first have to lower the culvert. A number of scoop wheels, powered by horses, were used to assist in the drainage of the fen. Under the powers of the Land Drainage Act 1861, the South Fen Drainage District was created in 1871. They hired a portable engine to drive a scoop wheel, and bought their own engine in 1872. The scoop wheel was supplemented by a centrifugal pump in 1887. In 1893, the engine was replaced by a new portable engine, and a new scoop wheel was manufactured in 1904. The drainage district became the Bourne South and Thurlby Fen Drainage Board in 1910, increasing its area by . In order to manage this larger area, a gas suction engine driving a scoop wheel was built nearer to the tunnel, to replace the previous engine. This worked until 1942, when it broke down. The fen became part of the Deeping Fen Drainage District in 1943, and until a new pumping station was built in 1949, portable pumps were used to maintain the water levels. The new station had two vertical spindle pumps driven by electric motors, and the station was altered in 1973, to lower the pumps. In 1973, the Baston, Langtoft and the Deepings Internal Drainage Board (IDB) as it was by then known, was abolished, together with three other nearby IDBs, and replaced by the Welland and Deepings IDB. Etymology Wheeler (1896) gives the name Bourne Old Ea to what is now the Bourne Eau and Bourne Ea or Brunne Ea to that part of the Glen downstream of Kate's Bridge. He then quotes Dugdale, and an act of Queen Elizabeth I: Brunne, River of, Brunne Hee,Burne Alde Ee. In Dugdale the Brunne Ee is describhed in the margin as 'now the Glene'...'Which had its course through the midst of the town of Pincbec.' The 'Ware' Dyke is described