Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Hackney]
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47
In Table I rooms having a floor area of less than 50 sq ft are not to be
included.
In Tables I and II -
1 unit - a person ten years old and over
½ unit - a child 1 year and over but under 10 years
No acoount shall be taken of a child under one year.