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56
works and the list of gases may be added to from time to time by order of the
Minister of Housing and Local Government. This Order came into operation on
the 1st June, 1958, and makes the additions set out in the Schedule attached
to the Order.
ATMOSPHERIC POLLUTION RECORDING APPARATUS
As in previous years apparatus for recording atmospheric pollution was
maintained at the following stations:-
(a) Grit, soot and other part icles, and sulphur dioxide (by the lead
peroxide method)
Station Instruments installed Maintained by
Town Hall Deposit Guage and Lead
Peroxide Instrument Hackney Borough Council
Buccleuch House do. Hackney Borough Council
Victoria Park do. London County Council
(b) Smoke, and Sulphur dioxide (by the volumetric method)
Station Apparatus installed Maintained by
Hillman Street Stores Volumetric sulphur dioxide
instrument with filter
attachment Hackney Borough Council
Lampard Grove Depot do. Hackney Borough Council
Ambulance Station, do. London County Council
Brooksby' s Walk
These instruments were augmented by the purchase of a Reflectometer which
gives a more accurate measurement of smoke concentration, as revealed by the
filter attachment.
Tables showing the extent of atmospheric pollution, as recorded at each
of the six stations in the Borough are set out on pages 17 & 18 of the Appendix,
During periods of heavy fog the volumetric smoke readings are taken at
three or four-hourly intervals and a record of any 'smog' periods is thereby
built up. These readings are of particular interest to the Department of
Scientific and Industrial Research who are engaged in determining why 'smog®
kills and what it contains. The following average daily figures illustrate
the increased pollution occurring during the foggy weather period January 30th
and 31st, 1958
Smoke per 100 cubic metres of air sampled
29th January 24 hours 46.4 milligrams
30th January „ 103.5 „
31st January „ 104,5 „
1st February „ 55.0 „
29th January
30th January
31st January
1st February
Sulphur Dioxide
3.1 parts per 100 ml.
17.3 „ „
30 9 „ „
11.8 „ „