Chapter 4

THE WATERS.

Land Artificially Won from the Waters--Great Works of Material Improvement--Draining of Lincolnshire Fens--Incursions of the Sea in the Netherlands--Origin of Sea-dikes--Gain and Loss of Land in the Netherlands--Marine Deposits on the Coast of Netherlands--Draining of Lake of Haarlem--Draining of the Zuiderzee--Geographical Effects of--Improvements in the Netherlands--Ancient Hydraulic Works--Draining of Lake Celano by Prince Torlonia--Incidental Consequences of Draining Lakes--Draining of Marshes--Agricultural Draining--Meteorological Effects of Draining--Geographical Effects of Draining--Geographical Effects of Aqueducts and Canals--Antiquity of Irrigation--Irrigation in Palestine, India, and Egypt--Irrigation in Europe--Meteorological Effects of Irrigation--Water withdrawn from Rivers for Irrigation--Injurious Effects of Rice-culture--Salts Deposited by Water of Irrigation--Subterranean Waters--Artesian Wells--Artificial Springs--Economizing Precipitation--Inundations in France--Basins of Reception--Diversion of Rivers--Glacier Lakes--River Embankments--Other Remedies against Inundations--Dikes of the Nile--Deposits of Tuscan Rivers--Improvements in Tuscan Maremma--Improvements in Val di Chiana--Coast of the Netherlands