Meteorological Observations. 
c*iu 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of April, 1862. 
Monthly Besitlts. 
Mean height of the Barometer for the month, .. 
Max. height of the Barometer occurred at 9 A. M. on the 12th, 
Min. height of the Barometer occurred at 6 p. m. on the 26th, 
.’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 
.. 29.752 
.. 29.959 
.. 29.536 
.. 0.423 
.. 29.827 
.. 29.673 
0.154 
Mean Dry Bulb Thermometer for the month, .. .. .. 
Max. Temperature occurred at 3 & 4 p. m. on the 14th, .. 
Min. Temperature occurred at 8 p. m. on the 29th, .. ». 
.Extreme range of the Temperature during the month, .. 
Mean of the daily Max. Temperature, .. .. .. 
Ditto ditto Min. ditto, .. .. .« .. 
Mean daily range of the Temperature during the month, .. .. 
Mean Wet Bulb Thermometer for 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, .. 
84.6 
100.2 
70.7 
29.5 
93.7 
76.8 
16.9 
76.9 
7.7 
73.0 
11.6 
Mean Elastic force of Vapour for the month, .. 
Inches 
0.801 
Troy grains 
Mean Weight of Vapour for the month, .. • • •• 8.5u 
Additional Weight of Vapour required for complete saturation, .. 3.84 
Mean degree of humidity for the month, complete saturation being unity, 0.69 
Inches 
.. 0.68 
2.53 
S. & S. W. 
Rained 8 days, Max. fall of rain during 24 hours, 
Total amount of rain during the month, 
Prevailing direction of the Wind, .. •• 
• • 
