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62
This was the highest month for sulphur dioxide for all Stations, No. 4
having an average reading of 329, No. 1 of 298 and No. 3 of 275.
The highest daily reading of smoke was at No. 4 in January—815
micrograms per cubic meter. The highest daily average concentrations
were in February No. 2 being 211, No. 4 203 and No. 1 159 and No. 3,108.
The Stations have in a general way maintained this order in degree
of pollution throughout the year with the summer levels of sulphur
dioxide at 126 for No. 2, 57 for No. 4 and 54 No. 1. No average figures
have been obtainable for No. 3 between March and October but the
available figures point to a rate of the order of 40.
July smoke concentrations of 22 at No. 2, 16 at No. 4 and No. 1 were
the lowest recorded for the year.
It is interesting to learn from the Warren Spring Laboratory that as a
result of the information supplied by the co-operating authorities it is now
possible to forecast with reasonable accuracy the levels of pollution in a
given area from such basic information as population, geographical
situation and amount of industry.
The thanks of the department are once more due to the pupils and
teachers at the two schools and the factory laboratory staff for their
invaluable assistance in operating three of the stations.
THE INSPECTION AND SUPERVISION OF FOOD
On the 1st October the Meat Inspection Regulations 1963, came
into operation, replacing the Public Health (Meat) Regulations 1924-1952.
The main provisions of the Regulations deal with:—
(i) The movement from slaughterhouses of the carcases oi animals
slaughtered for sale for human consumption.
(ii) The marking of carcases inspected and found fit for human
consumption.
(iii) Method of inspection.
Inspection of Meat.
There was a slight reduction in the number of animals killed at the
three slaughterhouses in Harrow the total for 1963 being 6,616, compared
with 7,347 in 1962. Of these 5,506 were killed at 46 High Street, Wealdstone,
425 at 7 Northolt Road and 685 at 87 Stanmore Hill. For the first
time all the cattle killed in Harrow were found free from tuberculosis,
compared with the three years preceeding the war when the average
percentage affected with tuberculosis was 23.7% in cows and 12.6% in
cattle other than cows.