London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Edmonton 1963
[Report of the Medical Officer of Health for Edmonton]
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SMOKE CONTROL 3.
The deposit gauge at the Town Hall continued to be used. The results are as follows:-
SUMMARY OF ANALYSES Deposit Gauge
| 1963 | Rainfall in Inches | DEPOSIT IN TONS PER SQUARE MILE | ||
|---|---|---|---|---|
| Insoluble Deposits (inc.Ash) | Soluble Deposits | Total Solids. | ||
| Jan. | 0.69 | 7.51 | 4.83 | 12.34 |
| Feb. | 0.51 | 7.23 | 4.97 | 12.20 |
| Mar. | 2.49 | 13.44 | 3.82 | 17.26 |
| Apr. | 2.05 | 9.01 | 7.01 | 16.02 |
| May | 1.42 | 8.21 | 4.44 | 12.65 |
| June | 1.63 | 6.55 | 5.25 | 11.80 |
| July | 0.96 | 4.07 | 3.15 | 7.22 |
| Aug. | 2.65 | 7.91 | 7.13 | 15.04 |
| Sept. | 1.79 | 5.23 | 3.91 | 9.14 |
| Oct. | 1.37 | 8.44 | 5.63 | 14.07 |
| Nov. | 4.21 | 8.51 | 9.88 | 18.39 |
| Dec. | 0.61 | 7.98 | 4.79 | 12.77 |
| TOTAL | 20.38 | 94.09 | 64.81 | 158.90 |
The deposit gauge is a measure of deposit and records in the main
the larger particles of dust and grit. Pollution of the air itself is
better measured by volumetric filters. These instruments measure the smoke
and sulphur dioxide in a sample of air each day. A continuous flow of air
passes through the instrument, through a pump, and the sulphur dioxide is
chemically measured and the stain produced by smoke measured by means of
a filter paper.
The readings are taken every 24 hours.
Details of these readings are set out over leaf.