Abstract of the Results of the Hourly Meteorological Observations

taken at the Surveyor General's Office, Calcutta,

\i Cirri, i Cirro strati, i Cumuli, i Cumulo strati, i Nimbi, -i Strati i Cirro cumuli.

Abstract of the Results of the Hourly Meteorological Observations taken at the Surveyor General's Office, Calcutta,

in the month of July, 1861.

MONTHLY RESULTS.

Mean height of the Barometer for the month,

Inches

29.534

Mean daily range of the Barometer during the month,

Max. height of the Barometer occurred at 10 A. M. on the 13th,
Min. height of the Barometer occurred at 5 P. M. on the 17th,
Extreme range of the Barometer during the month,
Mean of the daily Max. Pressures,

Max. Temperature occurred at 3 P. M. on the 8th and 11th,
Min. Temperature occurred at 7 P. M. on the 30th,
Extreme range of the Temperature during the month,
Mean of the daily Max. Temperature,

13 2

87.3

Ditto ditto Min. ditto,

80.2

Mean daily range of the Temperature during the month,

Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer,..
Computed Mean Dew-point for the month,

Mean Dry Bulb Thermometer above computed Mean Dew-point,

Mean Weight of Vapour for the month,

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

Abstract of the Results of the Hourly Meteorological Observations taken at the Surveyor General's Office, Calcutta,

in the month of July, 1861.

MONTHLY RESULTS.

Table showing the number of days on which at a 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.

Abstract of the Results of the Hourly Meteorological Observations taken at the Surveyor General's Office, Calcutta,

in the month of August, 1861.

Latitude 22° 33' 1" North. Longitude 88° 20′ 34′′ East.

Feet.

Height of the Cistern of the Standard Barometer above the Sea-level, 18.11 Daily Means, &c. of the Observations and of the Hygrometrical elements

The Mean height of the Barometer, as likewise the Mean Dry and Wet Bulb Thermometers are derived from the twenty-four hourly Observations made during the day.

Abstract of the Results of the Hourly Meteorological Observations taken at the Surveyor General's Office, Calcutta,

in the month of August, 1861.

Daily Means, &c. of the Observations and of the Hygrometrical elements dependent thereon.—(Continued.)

All the Hygrometrical elements are computed by the Greenwich Constants.

ing unity.