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
City of London 1968
[Report of the Medical Officer of Health for London, City of ]
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TABLE I
The rainwater collected at Guildhall during the year was more than the average for the past
five years. Whilst the insoluble deposits have increased, the soluble deposits have decreased,
compared to the last five years.
TABLE II
The concentration of smoke recorded during 1968 was less than the average for the past
five years.
TABLE III
There has been a very slight decrease in the amounts of SO2 averaged over the year and
less than the average for the past five years. Under the amended Clean Air Act chimneys come
within a stricter control with regard to their heights. The height of the chimney is related in
terms of the dispersal of SO2, so that the sulphur content of a fuel becomes a significant factor
in the design of chimneys.
TABLE 1 — Results obtained in 1968 of the monthly observations of rainfall and deposited matter by means of the deposit gauge
| MONTH | Rainfall collected in deposit gauge at Guildha11 | DEPOSITS | |||
|---|---|---|---|---|---|
| Equivalent to | Insoluble | Soluble | Total | ||