ON THE

FILTRATION OF RIVER WATERS,

FOR THE SUPPLY OF CITIES,

AS PRACTISED IN EUROPE,

MADE TO THE

BOARD OF WATER COMMISSIONERS

OF THE

CITY OF ST. LOUIS.

BY

JAMES P. KIRKWOOD,

CIVIL ENGINEER.

PUBLISHED BY PERMISSION OF THE BOARD.

ILLUSTRATED BY THIRTY ENGRAVINGS.

NEW YORK:

D. VAN NOSTRAND, PUBLISHER,

23 MURRAY STREET AND 27 WARREN STREET (UP STAIRS).

LONDON: TRÜBNER & CO.

1869.

Entered according to Act of Congress, in the year 1869, by

D. VAN NOSTRAND,

in the Clerk's Office of the District Court of the United States, for the Southern District of New York.