In the course of the preparation of a series of articles for “Surveying
and the Civil Engineer,” dealing with the numerous and varied types of
appliances used in connection with Sewage Disposal Works, it occurred
to the Author that it might be useful to many Engineers, and especially
to Students, to have the whole series published in a permanent form
for reference. At the same time, it appeared to afford an excellent
opportunity to include full details of all the various methods of
design and construction in general use, and thus provide a complete
work dealing with the whole subject. The result is the present volume,
which, it is hoped, will prove of value to those engaged in this
branch of engineering. In any future editions that may be required,
it will be the endeavour of the Author to omit any details which may
have become obsolete, and to include particulars of any new methods of
construction, systems or appliances, which may be brought into use from
time to time, and he will therefore be glad to receive particulars of
new appliances and systems as they are introduced.