gation of the merits of
various processes of sewage treatment has been made by the corporation
of Salford; among others of my electrical process. As the matter is at
present under discussion by the council, I am not in a position to give
extracts from the reports of the engineers and chemists under whose
supervision and control the work was done, but I may go so far as to say
that the results of my system of electrical treatment have proved its
efficiency and applicability to sewages of even such a foul nature as
that of Salford and Pendleton. The system was controlled continuously
for the corporation by Mr. A. Jacob, B.A., C.E., the borough engineer;
Mr. J. Carter Bell, F.I.C., etc., county analyst; Messrs John Newton &
Sons, engineers, Manchester; Mr. Giles, of Messrs. Mather & Pratt,
electrical engineers, Manchester; Dr. Charles A. Burghardt, lecturer in
mineralogy at Owens College.

I would also refer you to a paper recently read before the Manchester
Section of this Society by Mr Carter Bell, the borough analyst for
Salford, in whose remarks Dr. Burghardt, an independent authority,
permits me to add that he concurs. He cannot give details until his
report has gone in, which will be very shortly.

Mr. Carter Bell's report _has_ gone in, and although he is precluded
also from giving full details, he has kindly put at my disposal samples
sealed by him of the effluents produced by the electrical treatment,
which I now submit, together with the analyses in the table.

The samples are taken at random.

Whether the process will or will not be adopted by the Salford
authorities I am of course unable to say, but I think I may safely say
that the electrical process has now absolutely proved its case in regard
to the solution of the sewage problem. It is simple, efficient and, I am
sure, more economical than any other known process where duration is
taken into account.

In regard to the Salford trials it may be interesting to give the
following particulars:

______________________________________________________________________
|
| Parts in 100,000.
|________________________________________________
| | | |
| May 15. | June 7. | June 30. | July 25.
|_____________|___________|___________|__________
|Not filt