NATURAL & ARTIFICIAL
SEWAGE TREATMENT
BY
LIEUT.-COL. ALFRED S. JONES, V.C.
ASSOC. M. INST. C.E., FELLOW AND MEMBER OF COUNCIL
OF THE SANITARY INSTITUTE, ETC.
AND
H. ALFRED ROECHLING
M. INST. C.E., F.G.S., FELLOW OF THE SANITARY INSTITUTE, ETC.
London