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 II.
Date. | Illuminating Power in Standard Sperm Candles. | Pressure in inches of Water. |
---|---|---|
April 23rd, 1910 | 15.8 | 3.7 |
May 6th, „ | 16.5 | 2.6 |
„ 21 st, „ | 15.6 | 2.7 |
June 4th, ,, | 15.8 | 3.5 |
17th, ,, | 15.8 | 4.5 |
July 1st, „ | 15.6 | 3.0 |
„ 12th. „ | 15.8 | 3.1 |
„ 27th, ,, | 15.8 | 2.8 |
August 10th, „ | 15.4 | 3.6 |
„ 23rd, „ | 15.7 | 3.5 |
September 2nd, „ | 16.1 | 3.5 |
.. 24th ,, | 15.5 | 4.0 |
October 4th, „ | 15.4 | 3.8 |
„ 21th, „ | 16.0 | 3.6 |
November 4th, „ | 16.8 | 3.5 |
,, 19th ,, | 15.6 | 3.5 |
December 2nd, „ | 15.2 | 3.5 |
„ 16th, „ | 16.0 | 3.5 |
January 11th, 1911 | 15.4 | 3.6 |
,, 25th, ,, | 16.1 | 3.8 |
February 9th, ,, | 15.6 | 3.8 |
,, 23th, ,, | 16.3 | 4.0 |
March 10th, „ | 15.8 | 3.8 |
,, 24th, ,, | 15.8 | 4.3 |
Average for the year ended 31st March, 1911 | 158 | 3.6 |