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Water Supply of Londen.--In 1874 water was supplied to 3,655,000 lodgers, in 511,000 houses; the daily quantity of water was 526,612 cubic metres, or a little less than 144"96 litres per head. Eight companies, with a total capital of 281,218,500 francs, perform this service, paying average dividends of 6"3 per cent. In 1877 the number of inhabitants was 8,796,000, lodging in 538,000 houses; the daily consumption rose to 600,225 cubic metres, giving, for the summer months, a daily supply of 158"55 litres per head. A moderately heavy fire may require the concentration, on a given point, of about one-tenth of the whole supply, or a quantity of water sufficient, during the same "time, for a city of 100,000 inhabitants. It has been proposed to have two distinct systems , of which one should be reserved for the extinction of fires. It would require only 135,000 cubic metres, a quantity which could probably be furnished by springs from the chalk-beds. It would be necessary to establish reservoirs at elevated points, and a new pipe system. The water department receives a subsidy of about 2,000,000 francs, or in the neighborhood of 574 francs per 1000 inhabitants.
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