THE BASIN OF THE HUMBER. 



237 



titles by the Trent enabled them to attain this object, by spreading the soil over 

 the more inland parts of the plain, whilst deepening the drains which intersect the 



Fig. 116. — Warped Plain of the Ouse and the Tkext. 



Scale 1 • 300,000. 



5 Miles. 



seaward regions. This system of " warping " proved as successful here as it had 

 done m Italy. The lowlands along the coast are still known as " marshes," but 

 their soil is as firm as that of the neighbouring inland districts. Pure water was 



