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
Hornsey 1957
[Report of the Medical Officer of Health for Hornsey, Borough of]
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| Total number of foul manholes, 1,810. | ||||
|---|---|---|---|---|
| Dates of treatments: | 11th March to 13th April | 25th November to 20th December | ||
| Type of sewer | Soil | Surface water | Soil | Surface water |
| Manholes baited | 1,055 | 80 | 1,096 | 26 |
| Manholes showing complete prebait take | 563 | 6 | 606 | 6 |
| Manholes showing partial prebait take | 85 | 4 | 52 | 1 |
| Bait and poison used | Soaked bread and arsenic | Sausage rusk and zinc phosphide | ||
ATMOSPHERIC POLLUTION
The measurement of atmospheric pollution was continued during
1957. Two methods are in use, one dealing with solid deposits and the
other with smoke and sulphur dioxide. Three sites are in use for each
method, each chosen in consultation with the Department of Scientific
and Industrial Research, to whom monthly figures are given with the
object of establishing the pattern of atmospheric pollution over the
country as a whole.
The table overleaf gives monthly figures for each site. An examination
of the figures reveals the same "pattern" as in previous years with the
deposits in the gauge at the Wightman Road site consistently higher
than those from the other sites in the Borough. The average monthly
excess deposit during the five-year period 1952 to 1956 at this site is
15.5 tons per square mile.
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