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pollution, due to sulphur, at all observation points N. and N.E. of the works
as a function of the proportion of S. and S.W. wind, and by extrapolation to
zero S. and S.W. wind, it would appear that there would be a pollution of the
order of one daily unit, even if the works did not exist."
At the same time it was found that sulphuretted hydrogen was either
absent, or present in quite negligible amount.
To sum up, it would appear that normal operations in the vicinity do
not significantly increase the pollution of the atmosphere. Occasionally a
mechanical defect occurs and there is then a temporary pollution. Steps have
been taken to obviate these defects as much as possible and the whole question
remains under review.
Schools.
There are seven Elementary Schools in the district maintained by the
County Council and there are two Church Schools supervised by the County
Council. In addition there are five private schools. Secondary education is
provided for by the County Secondary School and by the Southall Technical
College.
All the Schools were inspected during the year and were found to be in a
satisfactory sanitary condition and to have a satisfactory water supply.
When infectious disease is reported from a school, the school is visited
by the Health Visitor and if necessary the children are inspected and other
measures, such as swabbing, exclusion from school, are taken for preventing
the spread of the infection.
The total number of children examined in the schools was 2,068.
Canal Boats.
During the year 53 visits were paid to the canal and 50 boats were
inspected. The general condition of the boats and their occupants was
satisfactory. Five infringements of the regulations were found, and by the end
of the year certificates of their having been rectified had been received. There
were no complaint notes issued by other authorities and no cases of infectious
disease were notified upon any of the boats. It has therefore not been necessary
to detain any vessel for the purpose of cleansing and disinfection.
Swimming Bath.
The swimming bath is normally open between the 30th April and the
30th September. The water is kept clean by a system of continuous filtration,
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