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
Ealing 1958
[Report of the Medical Officer of Health for Ealing]
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26
A Smoke Stain Reflectometer employing a photo electric
cell is now being used to assess the smoke filter papers
Until now visual estimation of the smoke stain with a
standard scale of shades has been employed The new
apparatus has a distinct advantage over this method as it
eliminates inaccuracies inherent in visual estimation
even by a trained observer,
The results obtained from these instruments are given in the following tables.
| 1958 | Deposited matter expressed as tons per square mile per month | Sulphur compounds by lead peroxide method expressed as milligrams SO3/day collected by 100 sq, cm.of Batch A Pb02 | ||||
|---|---|---|---|---|---|---|
| Long Drive | Longfield Depot | Greenford Green | Long Drive | Longfield Depot | Greenford Green | |
| Jan. | 14.07 | 14.74 | 8.86 | 2.56 | 4.04 | 2.35 |
| Feb. | 19.11 | 12.94 | 11.34 | 2.38 | 3.45 | 2.16 |
| March | 15.11 | 16.31 | 10.90 | 3.03 | 4.01 | 2.67 |
| April | 11.67 | 12.54 | 7.65 | 2. 11 | 2.44 | 1.26 |
| May | 15.01 | 15.10 | 14.84 | 1.04 | 1.73 | 0.90 |
| June | 15.17 | 13.01 | 11 95 | 1.09 | 1.67 | 0.93 |
| July | 9.98 | 10.47 | 9.76 | 0.71 | 1.52 | 0.67 |
| Birkbeck Avenue | Birkbeck Avenue | |||||
| Aug. | 6.21 | 7.70 | 5.27 | 0.73 | 1.33 | 0.47 |
| Sept. | 9.57 | 10.14 | 7.79 | 0.85 | 1.21 | 0.82 |
| Oct. | 10.54 | 11.94 | 8.72 | 1.00 | 1.46 | 0.97 |
| Nov. | 14.17 | 11.67 | 5.03 | 1.44 | 2.58 | 1.82 |
| Dec. | 18.74 | 17.21 | 8.96 | 1.37 | 2.49 | 1.94 |
Average Monthly Concentrations of Smoke and Sulphur Dioxide at the Town Hall
| 1958 | Smoke in Milligrammes per 100 cubic metres | Sulphur Dioxide in parts per hundred million |
| Jan, | 15.45 | 8.7 |
| Feb, | 13.21 | 8.0 |
| March | 15.22 | 10.8 |
| April | 8.97 | 5.9 |
| May | 4.16 | 3.2 |
| June | 6.38 | 2.7 |
| July | 4.12 | 2.8 |
| Aug, | 3.65 | 2.1 |
| Sept. | 6.92 | 3.7 |
| Oct. | 12.19 | 5.7 |
| Nov. | 23.77 | 11.5 |
| Dec, | 20.89 | 9.6 |
FOOD HYGIENE.
It is pleasing to report that excellent co-operation
between the food traders and the Public Health Department