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ordered to measure the concentration of smoke as recorded on the filter paper of
the volumetric recording apparatus. At present, this information is obtained by
the kind co-operation of the Hackney Borough Council.
The lead-dioxide candle and deposit gauge previously in use has been continued
as it is felt they will be of empirical value locally for comparison purposes when
the first smoke control areas have been brought into operation.
Details of the monthly results of recordings are as shown in Table VII.
The work of the Clean Air Section has been most effective. Very good cooperation
with industrial users has been achieved and a smoking factory chimney
in Poplar is now a rarity apart from occasional plant-failure.
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