DISCUSSION ON RAINFALL, EVAPORATION AND PERCOLATION. Free

UK, RIVER LEE, LONDON, THAMES, CROYDON, NENE, WITHAM, BOSTON, FENS, EVAPORATION, PERCOLATION, RAINFALL, RAIN, RIVERS, FLOW, WATERWORKS, WATER SUPPLY, WATER, EXPERIMENTS, GAUGES, MANURE, AGRICULTURE, FLOODS, HYDROLOGY, DRAINAGE, CHALK, FILTRATION, PURIFICATION, WELLS, TOWNS, CITIES, DEATHS, FEVERS, EPIDEMICS, DISEASES, PUBLIC HEALTH, GAUGING, BOURNES, FENS, RESERVOIRS, SOILS, MINES, DAMAGE, DISCHARGES, METEOROLOGY, FILTERS, BEDS, POROSITY, FISSURES, BANKS