Removal of Iron from Ground Waters. A description of certain experiments.

Fowler. Jour. New England Water Works Assoc., XII., p. 209.

The Operation of a Slow Sand Filter. A most helpful and thorough description of the operation of sand filters at Poughkeepsie for a long period of years.

Fuller. Water Purification at Louisville. D. Van Nostrand Co., 1898.

A report upon a series of most exhaustive experiments carried out at Louisville, directed principally to the clarification of excessively muddy waters. Contains a full account of methods of coagulation, and of experiments with the electrical treatment of water.

—— Report on Water Filtration at Cincinnati. City document, 1899.

Account of experiments with sand filters, with and without coagulants, and with other processes applied to the Ohio River water at Cincinnati.

Gill. Filters at Muggel. Proc. Institute of Civil Engineers, 1894-5; vol. 119, p. 236.

A description of the new vaulted filter plant designed by the author for Berlin, Germany. Plans and views.

Goetze. Journal für Gasbeleuchtung und Wasserversorgung, 1897, p. 169.