Meteorological Observations. 
xxm 
Abstract of the Results of the Hourly Meteorological Observations 
talcen at the Surveyor General's Office, Calcutta, 
in the month of June , 1861. 
Monthly Results. 
Inches 
Mean height of the Barometer for the month, .. 29.572 
Max. height of the Barometer occurred at 9 A. M. on the 19th, 29.779 
Min. height of the Barometer occurred at 2 p. m. on the 13tb, 29.290 
Extreme range of the Barometer during the month, .. 0.489 
Mean of the Daily Max. Pressures, 29.625 
Ditto ditto Min. ditto, .. .. 29.506 
Mean daily range of the Barometer during the month, 0.119 
o 
Mean Dry Bulb Thermometer for the month, 83.3 
Max. Temperature occurred at 2 p. m. on the 1st, 94.9 
Min. Temperature occurred at 8 a. m. on the 10th, 76.0 
Extreme range of the Temperature during the month, 18.9 
Mean of the daily Max. Temperature, .. 88.2 
Ditto ditto Min. ditto, .. 79.6 
Mean daily range of the Temperature during the month, 8.6 
Mean Wet Bulb Thermometer for the month,.. .. 79.4 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer, 3.9 
Computed Mean Dew-point for the month, .. .. 77.4 
Mean Dry Bulb Thermometer above computed Mean Dew-point, 5.9 
Inches 
Mean Elastic force of Vapour for the month, 0.922 
Troy grains 
Mean Weight of Vapour for the month, 9.89 
Additional Weight of Vapour required for complete saturation, 2.04 
Mean degree of humidity for the month, complete saturation being unity, 0.83 
Rained 20 days, Max. fall of rain during 24 hours, 
Tot al amount of rain during the month, 
Prevailing direction of the Wind, .. 
Inches 
12.09 
26-44 
s. & s. w. 
