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 1961
[Report of the Medical Officer of Health for Edmonton]
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SUMMARY OF ANALYSES
| 1961 | Rainfall in Inches | DEPOSIT IN TONS PER SQUARE MILE | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Insoluble Deposits | Ash | Soluble Deposits | Total Solids | ||||||||||||
| (a) | (b) | (c) | (a) | (b) | (c) | (a) | (b) | (c) | (a) | (b) | (c) | (a) | (b) | (c) | |
| Jan. | 2.11 | 2.08 | 0.46 | 3.81 | 7.09 | 3.07 | 2.21 | 4.46 | 1.75 | 6.05 | 6.96 | 2.47 | 9.86 | 14.05 | 5.54 |
| Feb. | 2.27 | 2.19 | 0.43 | 4.78 | 7.50 | 3.64 | 2.41 | 3.79 | 1.62 | 5.84 | 6.04 | 2.76 | 10.62 | 13.54 | 6.40 |
| Mar. | .09 | .04 | .02 | 1.75 | 3.96 | 2.58 | 1.27 | 3.25 | 2.00 | 2.26 | 2.60 | 1.45 | 4.01 | 6.56 | 4.03 |
| Apr. | 2.48 | 2.33 | 0.83 | 5.05 | 8.74 | 4.13 | 2.94 | 5,97 | 2.74 | 4.86 | 5.72 | 2.47 | 9.91 | 14.46 | 6.60 |
| May | 0.78 | 0.82 | 0.41 | 5.89 | 6.08 | 2.02 | 2.68 | 3.69 | 0.66 | 2.22 | 2.89 | 1.72 | 8.11 | 8.97 | 3.74 |
| June | 1.35 | 1.18 | 0.26 | 2.41 | 4.98 | 4.03 | 0.99 | 3.46 | 2.70 | 3.92 | 3.20 | 1.57 | 6.33 | 8.18 | 5.60 |
| July | 0.48 | 1.40 | * | 1.11 | 6.52 | * | 0.28 | 4.17 | * | 4.31 | 4.00 | * | 5.42 | 10.52 | * |
| Aug. | 2.48 | * | ø | 3.89 | * | ø | 1.69 | * | ø | 5.02 | * | ø | 8.91 | * | |
| Sept. | 2.53 | 2.62 | * | 4.31 | 5.88 | * | 1.91 | 3.17 | * | 6.04 | 5.14 | * | 10.35 | 11.02 | * |
| Oct. | 2.69 | o | * | 3.08 | o | * | 1.31 | o | * | 8.19 | o | * | 11.27 | o | * |
| Nov. | 1.70 | 2.32 | * | 2.03 | 5.03 | * | 0.76 | 2.72 | * | 5.15 | 6.45 | * | 7.18 | 11.48 | * |
| Dec. | 2.45 | 3.77 | * | 4.72 | 7.27 | * | 2.88 | 4.43 | * | 8.99 | 7.93 | * | 13.71 | 15.20 | * |
| TOTAL | 8.93 | 21.23 | 2.41 | 38.94 | 66.94 | 19.47 | 19.64 | 40.80 | 11.47 | 57.83 | 55.95 | 12.44 | 96.77 | 122.89 | 31.91 |
(a) St. David's Hospital Site No.l.
(b) Town Hall Site No.2.
(c) Cuckoo Hall Lane School Site No.3. (Discontinued 30.6.61.)
0 August - No readings taken of St, David's deposit gauge
o October - Town Hall deposit gauge found broken - no readings
* 30.6.61 - Discontinued
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 recorded deposit for gauges (a) and (b) show an appreciable reduction in pollution
compared with the figures for 1960.
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. A second smoke filter was installed at
Cuckoo Hall School (now Mandeville School) on 1st July, 1961. Details of the readings of
the recorder installed at the Latymer School in May 1959 and Mandeville School, are set
out overleafo
25
It is intended to install three further smoke filters so as to give adequate information
on atmospheric pollution in the Borough; when the new apparatus is installed, the
use of the existing deposit gauges will be discontinued.