General View of Filters at Hamburg.
[Frontispiece.]
THE FILTRATION
OF
PUBLIC WATER-SUPPLIES.
BY
ALLEN HAZEN,
MEMBER OF THE AMERICAN SOCIETY OF CIVIL ENGINEERS, THE BOSTON SOCIETY OF CIVIL ENGINEERS, THE AMERICAN WATER-WORKS ASSOCIATION, THE NEW ENGLAND WATER-WORKS ASSOCIATION, THE AMERICAN CHEMICAL SOCIETY, THE AMERICAN PUBLIC HEALTH ASSOCIATION, ETC.
THIRD EDITION, REVISED AND ENLARGED.
SECOND THOUSAND.
NEW YORK:
JOHN WILEY & SONS.
London: CHAPMAN & HALL, Limited.
1905.
Copyright, 1900,
BY
ALLEN HAZEN.
ROBERT DRUMMOND, ELECTROTYPER AND PRINTER, NEW YORK.