London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
City of London 1857
[Report of the Medical Officer of Health for London, City of ]
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No. IV.—
| MONTHS. 1857.8. | Barometer. | Dry Thermometer. | Wet Thermometer or Hygrometer. | Rain Gauges. | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean Pressure. | Highest Pressure. | Lowest Pressure. | Mean Temperature. | Highest Temperature. | Lowest 1 Temperature. | Mean Daily Range. | Mean Temperature. | Dew Point. | Degree of Humidity. | Weight of vapour in cubic foot of air. | Vapour required to saturate ditto. | Total Fall. | Greatest Fall. | Lowest Fall. | ||||||
| Wet Bulb. | Dry Bulb. | On Roof. | On Grnd. | On Roof. | On Grnd. | On Roof. | On Grnd. | |||||||||||||
| Inches. | Inches. | Inches. | Deg. | Deg. | Deg. | Deg. | Deg. | Deg. | Deg. | Deg | Grns. | Grns. | Ins. | Ins. | Ins. | Ins. | Ins. | Ins. | ||
| October | 29.872 | 30.290 | 28.842 | 53.9 | 65.5 | 38.0 | 10.8 | 52.8 | 54.8 | 50.9 | 0.87 | 4.2 | 0.7 | 4.16 | 4.08 | 1.87 | 1.78 | 0.01 | 0.01 | |
| November | 30.045 | 30.802 | 29.272 | 47.4 | 61.0 | 31.5 | 9.1 | 46.6 | 4.0 | 44.1 | 0.90 | 3.4 | 0.4 | 1.04 | 1.12 | 0.46 | 0.49 | 0.01 | 0.02 | |
| December | 30.277 | 30.760 | 29.810 | 47.6 | 57.5 | 31.0 | 9.0 | 46.4 | 48.4 | 44.2 | 0.86 | 3.3 | 0.5 | 0.61 | 0.61 | 0.33 | 0.33 | 0.01 | 0.01 | |
| January | 30.259 | 30.626 | 29.898 | 39.7 | 51.5 | 23.5 | 12.6 | 38.7 | 40.8 | 36.1 | 0.84 | 2.5 | 0.5 | 0.36 | 0.39 | 0.13 | 0.14 | 0.10 | 0.12 | |
| February | 29.968 | 30.378 | 29.546 | 36.3 | 51.5 | 19.5 | 10.3 | 35.5 | 36.9 | 33.6 | 0.88 | 2.3 | 0.3 | 2.28 | 2.28 | 1.10 | 1.10 | 0.01 | 0.01 | |
| March | 29.654 | 30.576 | 29.052 | 42.0 | 60.9 | 26.0 | 11.4 | 41.6 | 42.4 | 40.6 | 0.94 | 2. 9 | 0.2 | 0.75 | 0.75 | 0.17 | 0.17 | 0.01 | 0.01 | |
| April | 29.896 | 30.392 | 29.088 | | 47.4 | 69.9 | 32.0 | 13.8 | 44.2 | 47.4 | 40.7 | 0.79 | 2.9 | 0.8 | 2.60 | 2.69 | 0.67 | 0.67 | 0.02 | 0.03 | |
| May | 29.912 | 30.503 | 29.031 | 52.3 | 78.9 | 39.5 | 14.8 | 47.0 | 52.6 | 41.4 | 0.72 | 3.0 | 1.5 | 1.89 | 2.02 | 0.58 | 0.61 | 0.02 | 0.02 | |
| June | 30.030 | 30.324 | 29.728 | 65.1 | 89.9 | 51.5 | 21.8 | 60.1 | 66.3 | 55.1 | 0.69 | 4.8 | 2.1 | 0.66 | 0.68 | 0.49 | 0.51 | 0.03 | 0.03 | |
| July | 29.608 | 30.251 | 29.681 | 61.4 | 84.9 | 50.3 | 14.3 | 56.2 | 61.7 | 51.5 | 0.70 | 4.4 | 1.5 | 2.71 | 2.77 | 0.65 | 0.69 | 0.01 | 0.01 | |
| August | 29.925 | 30.474 | 29.724 | 62.9 | 80.6 | 49.6 | 14.8 | 58.8 | 63.1 | 53.5 | 0.71 | 4.5 | 1.9 | 1.59 | 1.63 | 0.48 | 0.48 | 0.01 | 0.01 | |
| September | 29.960 | 30.543 | 29.576 | 60.8 | 77.0 | 49.3 | 12.3 | 58.5 | 60.9 | 56.4 | 0.86 | 5.1 | 0.9 | 0.72 | 0.78 | 0.26 | 0.29 | 0.01 | 0.01 | |
Barometer.—The highest readings were on October 13, November 12, December 12, January 23, February 25, March 22, April 22, May 26, June 23,
July 3, August 7, September 25. The lowest readings were on October 8, November 24, December 3, January 20, February 4, March 6, April
30, May 1, June 17, July 6, August 30, September 30.
Temperature.—The highest were October 2, November 3, December 10, January 30, February 5, March 24, April 22, May 31, June 16, July 15,
August 12, September 13. The lowest were October 9, November 26, 28, December 31, January 7, February 3, March 5, April 12, May 7,
June 14, July 30, August 30, September 25.
Rain.—The greatest fall on October 23, November 24, December 4, January 11, February 15, March 13, April 29, May 25, June 5, July 28,
August 11, September 6. The least fall on October 24, 27, November 2, December 1, 2, January 8, February 4, March 17, 18, 19, 31, April 3,
May 5, 20, June 7, July 6, 21, 26, August 25, September 22.
Electricity.—Positive generally throughout the year. WILLIAM HAYWOOD.