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 Wandsworth, Metropolitan Borough]
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TABLE I .
Date. | Illuminating Power in Standard Sperm Candles. | Grains of Sulphur in 100 cubic feet of gas. |
---|---|---|
April, 1909 | 14.8 | 25.2 |
May, „ | 15.2 | 25.2 |
June, ,, | 15.0 | 25.0 |
July, „ | 14.9 | 25.6 |
August, ,, | 14.8 | 23.4 |
September, ,, | 14.8 | 21.0 |
October, ,, | 14.9 | 22.5 |
November, ,, | 14.7 | 23.5 |
December, ,, | 14.4 | 22.4 |
January, 1910 | 14.5 | 23.2 |
February, ,, | 14.8 | 24.5 |
March, ,, | 14.7 | 26.0 |
Average for the year ended 31st March, 1910 | 14.8 | 24.0 |