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City of London 1864

[Report of the Medical Officer of Health for London, City of ]

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Table: No. VI.—Meteorology of the City of London for each Month in the Year ending in September 1865, from, Observations made at the Engineer s Office, Guildhall, under the direction of Mr. Haywood.

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No. VI.—Meteorology of the City of London for each Month in the Year ending in September 1865, from, Observations made at the Engineer s Office, Guildhall, under the direction of Mr. Haywood.

MONTHS. 1864-65.	Barometer.			Dry Thermometer.				Wet Thermometer or Hygrometer.						Rain Gauges.
	Mean Pressure.	Highest Pressure.	Lowest Pressure.	Mean Temperature.	Highest Temperature.	Lowest Temperature.	Mean Daily Kange.	Mean Temperature.		Dew Point.	Degree of Humidity,	Weight of vapour iu 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.	Indies.	Inches.	Deg.	Deg.	Deg.	Deg.	Deg".	Deg	Dee.		Grns.	Grns.	In?.	Ins.	Ins.	Ins.	Ins.	Ins.
								October						29.787	30. 374	29. 092	52.0	61.0	43.6	9.1	48.9	52.0	45.9	80	3.5	0.9	0 .93	0.85	0.32	0 .31	0.02	O.O1
	November		29.732	30.516	28.770	44.1	54.5	33.7	9.7	42.3	44.1	39.6	84	2.8	0.5	21.5	22.4	0.99	1.00	0.01	0.02
December	29. 958	30.588	29.510	41.0	53.0	24.6	6.2	39.9	41.0	38.7	92	2.7	0.3	0.55	0.58	0.27	0.27	0.02	0.02
January	29.340	30.376	28.596	38.7	51.0	26.7	6.8	37.6	38.7	37.2	92	2.5	0.3	3.05	3.29	0.75	0.75	o.01	0.01
February	29.823	30.588	28.897	3.78	50.6	24.0	7.0	37. 0	37.8	35.6	91	2.4	0.3	1.66	1.93	0.38	0.39	0.03	0.03
March	29.063	30.332	29.216	37.5	51.6	2.70	8.6	35.1	37.5	31.5	80	2 .1	0 .6	0.89	0 96	0.13	0.14	0.02	0.02
April	30 .009	30.346	29.878	52.0	72.6	39.4	16.2	48.4	52.0	44.9	77	3.4	10	0.40	0.45	0.09	0.11	0.03	0.03
May	29.857	30388	29.534	56.5	73.7	39.3	15.0	51.8	56.5	47.4	70	3.7	l.5	3.20	3.35	0.75	0.77	0.02	0.02
June	30.142	30.552	29.324	60.5	77.5	47.5	14.0	55.2	60.5	50.6	70	4.1	1.8	1.58	1.64	0.78	0.81	0.03	0.04
July	29.703	30.398	29.700	64 .3	82.0	53.4	14. 0	58.5	64.3	54.0	67	4.5	2.1	2.64	2.69	1.07	1.07	0.02	0.02
August	29.873	30.324	29.528	59.7	72.0	48.5	12 .2	55.3	59.7	51.6	73	4.2	1.5	5.12	5.27	1.35	1.36	0 .01	0.01
September	30.176	30.500	29.954	63.9	81.0	50.0	13.8	59.3	63.9	55.8	74	4.9	1.6	0.34	0.42	0.20	0.28	0.01	0.01

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Barometer.—The highest readings were on October 11, November 7, December 24, January 7, February 10, March 3, April 6, May 20, June 8,
July 26, August 26. September 23. The lowest readings were on October 22, November 14, December 24, January 14, February 1, March 6,
April 3, May 10, June 30, July 1, August 23, September 8.
Temperature.—The highest were on October 2, November 17, December 5, January 10, February 28, March 31, April 23, May 22, June 23,
July 15, August 10, September 8. The lowest were on October 3, November 11, December 19, January 30, February 15, March 21, April 3,
May 2, June 12, July 12, August 3, September 23.
Rain.—The greatest fall on October 22, November 24, December 1, January 13. February 17, March 2, April 6, May 11, June 2, July 7, August 24,
September 21. The least fall on October 28, November 28, December 22, January 24, February 18, March 11, April 19, May 6, June 3,
July 13, August 19, September 22.
Electricity.—Positive generally throughout the year. WILLIAM HAYWOOD.

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City of London 1864

Table: No. VI.—Meteorology of the City of London for each Month in the Year ending in September 1865, from, Observations made at the Engineer s Office, Guildhall, under the direction of Mr. Haywood.

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