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110.
"2. That in connection with any interceptor hereafter
fixed on a main house drain, it is advisable to carry
up a ventilating pipe from the sewer side of the interceptor,
up the front, side, or back of the house, to the
satisfaction of the local sanitary authority, and that
the outlet drain from the interceptor shall not be
flap-trapped in sewer, unless required by the local
Sanitary Authority.
"3. That pipe ventilators up buildings, or otherwise,
when possible, should always be adopted, in addition
to surface ventilators."
The Engineer reported that—
"The general result of the conference confirmed the
action of the Main Drainage Committee and the
Council in recent years, and that the remedy for
sewer emanations is to be looked for from the maintenance
of more ventilating openings, both at the
street level and by means of pipes carried up houses
and other buildings."
Upon the recommendation of the Engineer, the Main
Drainage Committeedirected the report to be printed and copies
thereof to be sent "to each member of the Council, and to the
engineers and surveyors of the district boards and vestries in
the metropolis."
With the above expressed views of the engineers and surveyors,
their colleagues, the Medical Officers of Health (though
they were not consulted) are doubtless in general agreement.
The only recommendation, perhaps, containing much of novelty
is the second, which endorses a principle in the ventilation of
sewers set out by your Vestry's Surveyor in his abovementioned
report "On Sewer Ventilation and Sewer Smells " to
the effect" That in conjunction with any interceptor hereafter