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. | Calorific Power in Calories per cubic foot. | |
---|---|---|---|---|
Gross. | Net. | |||
April, 1911 | 14.7 | 25.8 | ||
May, ,, | 15.3 | 27.9 | ||
June, ,, | 15.3 | 24.5 | ||
July, ,, | 26.7 | |||
August, „ | 15.3 | 21.8 | ||
September, ,, | 14.9 | 26.0 | [126.l] | [112.3] |
October, ,, | I5.3 | 21.3 | 134.1 | 119.9 |
November, ,, | 14.7 | 20.5 | 134.4 | 120.6 |
December, „ | 15.0 | 22.9 | 136.4 | 121.7 |
January, 1912, ,, | 15.1 | 15.5 | 135.4 | 121.6 |
February, ,, | 14.7 | 17.8 | 133.3 | 120.1 |
March, ,, | 15.0 | 20.5 | 134.8 | 121.7 |
Average for the year ended 31st March, 1912 | 151 | 22.6 | 134.7 | 120.9 |