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, | 1907 | 14.9 | 22.6 |
May, | „ | 14.7 | 25.3 |
June, | „ | 14.7 | 25.5 |
July, | „ | 15.3 | 25.3 |
August, | „ | 14.9 | 25.3 |
September, | „ | 15.0 | 27.6 |
October, | „ | 15.0 | - |
November, | „ | 15.0 | 24.6 |
December, | „ | 14.8 | 27.3 |
January, | 1908 | 14.7 | 25.6 |
February, | „ | 15.0 | 26.3 |
March, | „ | 14.7 | 26.2 |
Average for the year ended 31st March, 1908 | 14.9 | 25.6 |