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Abstract of the Results of the Hourly Meteorological Observations

taken at the Surveyor General’s Qfiice, Calcutta,
in the month of January, 1862.

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Abstract of the Results of the 1I0urZy Jlfeteorological Observations taken at the Surveyor General’s Ofiice, Calcutta, in the month of January, 1862.

Monrnmr Rasnnrs. Inches. Mean height of the Barometer for the month, .. .. 30.009 Max. height of the Barometer occurred at 10 A. M. on the 3rd, .. 30.183 Min. height of the Barometer occurred at 3 A. M. on the 27th, .. 29.768

Extreme range of the Barometer during the month, . . . . 0.415 Mean of the daily Max. Pressure, . . .. . . 30.084 Ditto ditto Min. ditto, .. .. . . 29.955 Mean daily range of the Barometer during the month, . . . . 0.129 0 Mean Dry Bulb Thermometer for the month, . . .. 67.0 Max. Temperature occurred at 3 P. M. on the 16th, . . . . 78.3 Min. Temperature occurred at 7 A. M. on the 20th & 29th, .. 55.2 Extreme range of the Temperature during the month, .. .. 23 1 Mean of the daily Max. Temperature, .. .. .. 75.0 Ditto ditto Min. ditto, . . . . . . 60.6 Mean daily range of the Temperature during the month, ,, 14.4. 0

Mean Wet Bulb Thermometer for the month, . . . . 61.8 Mean Dry Bulb Thermometer above Mean Wct Bulb Thermometer, . . 5.2 Computed Mean Dew-point for the month, . . . . 58.7 Mean Dry Bulb Thermometer above computed Mean Dew-point, .. 8.3 Inches

Mean Elastic force of Vapour for the montl1,. . .. . . 0.501

Troy grains

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Mean Weight of Vapour for the month, .. .. .. 5.55 Additional Weight of Vapour required for complete saturation, .. 1.75 Mean degree of humidity for the month, complete saturation being unity, 0.76

Inches Ruined 7 days, Max. fall of rain during 241 hours, .. . . 0.47 Total amount of rain during the month, . . .. .. 1.03 Prevailing direction of the Wind, .. on N.

Abstract qf the Results of the Hourly ll[eteor0lo_gical Observations taken at the Surveyor General’s Ofioe, Calcutta,

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Table showing the number of days on which at 11 given hour any particular wind blew, together with the number of days on which at the same hour, when any particular wind was blowing, it rained.

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Abstract of the Results of the Hourly llfeteorologioal Observations taken at the Sur-ve_1/or General’s Ofioe, Calcutta, in the month of February, 1862.

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Feet. Height of the Cistern of the Standard Barometer above the Sea-level, l8.ll

Daily Means, &c. of the Observations and of the Hygrmnetrical elements dependent thereon.

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The Mean height of the Barometer, as likewise the Mean Dry and Wet Bulb T1101-mometers are derived from the twenty—f0v.r hourly Observations made during the day.

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