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(g) Measurement of Atmospheric Pollution
Three stations for the measurement of atmospheric pollution
by the daily volumetric method are in use. The
pollutants measured are smoke and sulphur dioxide.
Last year I reported that the method of measuring smoke
was not sufficiently accurate to warrant publication of the
figures. An electric reflectometer has now been obtained
for assessing smoke stains and the figures obtained are
thought to be sufficiently accurate for inclusion in this
report.
The measuring station at William Byrd School is situated
in fairly close proximity to the Bath Road and London Airport
but is a considerable distance away from any source
of smoke particularly in a southerly direction the station
at the Civil Defence Headquarters is in the centre of the
town where it is likely to receive the full effect of in
dustrial pollution, the station at Grange Park School is
in the middle of a modern residential area.