Meteorological Observations . 
cxi 
Abstract of the jResults of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta , 
in the month of May , 1862 . 
Monthly Hesults. 
Mean height of the Barometer for the month, 
Max. height of the Barometer occurred at 10 a. M. on the 6th, 
Min. height of the Barometer occurred at 5 p. m. on the 29th, 
Extreme range of the Barometer during the month, 
Mean of the daily Max. Pressures, 
Ditto ditto Min. ditto, 
Mean daily range of the Barometer during the month, .. 
Inches 
29.684 
29.919 
29.474 
0.445 
29.751 
29.614 
0.140 
Mean Dry Bulb Thermometer for the month, 
Max. Temperature occurred at 3 P. M. on the 28tli, 
Min. Temperature occurred at 7 a. m. on the 6th, 
Extreme range of the Temperature diming the month, 
Mean of the daily Max. Temperature, .. 
Ditto ditto Min. ditto, 
Mean daily range of the Temperatime during the month, 
o 
85.4 
103.2 
72.2 
31 0 
94.1 
78.5 
15.6 
o 
Mean Wet Bulb Thermometer for the month, .. .. 79.0 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer,.. 6.4 
Computed Mean Deiv-point for the month, .. .. 75.8 
Mean Dry Bulb Thermometer above computed Mean Dew-point, .. 9.6 
Inches 
Mean Elastic force of Vapour for the month,.. .. .. 0.876 
Troy grains. 
Mean Weight of Vapour for the month, .. .. .. 9.35 
Additional Weight of Vapour required for complete saturation, .. 3.33 
Mean degree of humidity for the month, complete saturation being unity, 0.74 
Inches 
1.26 
3.80 
S. 
Rained 11 days, Max. fall of rain during 24 hours, 
Total amount of rain during the month, 
Prevailing direction of the Wind, 
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