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 1960
[Report of the Medical Officer of Health for Edmonton]
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SUMMARY OF ANALYSES
DEPOSIT IN TONS PER SQUARE MILE
| 1960 | Rainfall in Inches | Insoluble Deposits | Ash | Soluble Deposits | Total Solids | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (a) | (b) | (c) | (a) | (b) | (C) | (a) | (b) | (c) | (a) | (b) | (c) | (a) | (b) | (C) | |
| Jan. | 1.30 | 1.69 | 1.41 | 3.96 | 5.63 | 5.67 | 2.20 | 3.57 | 3.43 | 3.69 | 5.48 | 3.97 | 7.65 | 11.11 | 9.64 |
| Feb. | 2.40 | 2.17 | 1.93 | 4.13 | 9.31 | 6.48 | 2.35 | 5.71 | 2.56 | 6.94 | 7.43 | 6.01 | 11.07 | 16.74 | 12.49 |
| Mar. | 1.49 | 1.34 | 0.70 | 5.05 | 8.12 | 5.38 | 3.07 | 5.32 | 3.33 | 6.25 | 5.50 | 3.94 | 11.30 | 13.62 | 9.32 |
| Apr. | 0.52 | 0.47 | 0.41 | 4.56 | 8.21 | 8.52 | 2.95 | 5.73 | 6.43 | 4.42 | 3.75 | 2.67 | 8.98 | 11.96 | 11.19 |
| May | 1.58 | 1.60 | 1.42 | 4.64 | 7.27 | 5.99 | 2.75 | 4.58 | 3.56 | 3.53 | 3.71 | 3.09 | 8.17 | 10.98 | 9.08 |
| June | 1.29 | 1.19 | 0.95 | 5.51 | 7.64 | 6.00 | 3.16 | 6.39 | 2.78 | 6.59 | 3.92 | 3.57 | 12.10 | 11.56 | 9.57 |
| July | 3.12 | 2.96 | 2.36 | 3.79 | 5.58 | 4.89 | 1.89 | 3.71 | 2.81 | 4.63 | 4.50 | 3.03 | 8.42 | 10.08 | 7.92 |
| Aug. | 1.75 | 2.17 | 2.11 | 4.91 | 5.99 | 4.29 | 2.21 | 3.66 | 2.30 | 3.71 | 4.72 | 3.40 | 8.62 | 10.71 | 7.69 |
| Sep. | 4.44 | 3.41 | 3.02 | 4.06 | 4.32 | 2.47 | 2.05 | 2.57 | 1.34 | 5.18 | 6.47 | 3.08 | 9.24 | 10.70 | 5. 55 |
| Oct. | 5.59 | 5.31 | 3.28 | 8.82 | 8. 89 | 5.60 | 6.13 | 5.63 | 3.28 | 7.07 | 7.88 | 5.77 | 15.89 | 16.77 | 11.37 |
| Nov. | 3.60 | 3.46 | 1.58 | 2.85 | 6.89 | 3.85 | 1.47 | 4.18 | 2.30 | 6.53 | 8.50 | 3.68 | 9.38 | 15.39 | 7.53 |
| Dec. | 2.77 | 0.49 | 2.84 | 3.81 | 3.76 | 8.70 | 2.00 | 1.99 | 5.11 | 5.64 | 2.73 | 7.75 | 9.45 | 6.49 | 16.45 |
| 29.85 | 26.26 | 22.01 | 56.09 | 81.61 | 67. 84 | 32.23 | 53.04 | 39.23 | 54.18 | 64.59 | 49.96 | 119.27 | 146.11 | 117.80 | |
(a) St. David's Hospital Site No.l.
(b) Town Hall Site No.2.
(c) Cuckoo Hall Lane School Site No.3.
Deposit gauges do not accurately measure pollution of the air itself. It is the
dust and grit falling through the air that they record, and it tends therefore to be pollution
from factories and possibly railway locomotives that is mainly shown in deposit gauge
results.
The average level of pollution continues to show a slight decrease.
A more accurate measure of air pollution is given by a volumetric filter which
measures smoke and sulphur dioxide in the air. Continuous flow of air is pumped through
the instrument and daily the sulphur dioxide is chemically measured and the stain produced
by smoke measured by means of a filter paper. Details of the readings of the recorder
installed at the Latymer School in May 1959 are set out overleaf.
It is intended to install further instruments to replace the deposit gauges
previously referred to.
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