CORRESPONDENCE. STATISTICAL AND EXPERIMENTAL DATA ON FILTRATION AND THE SHEFFIELD WATER SUPPLY AND STATISTICS RELATING THERETO.

Keywords: FILTERS, FILTRATION, WATER SUPPLY, ORGANISMS, PURIFICATION, BACTERIA, WASTE, SAND, WELLS, RAINFALL, DISCHARGES, EVAPORATION, FLOW, MECHANICAL, STORAGE, CONSUMPTION, SCREENING, ORGANISMS, TREATMENT, RESERVOIRS, STATISTICS, EXPERIMENTS, SHEFFIELD, ENGLAND, CROYDON, NILE, ALEXANDRIA, AMSTERDAM, SYDNEY, UK, EGYPT, HOLLAND, NETHERLANDS, AUSTRALIA