Meteorological Observations. Ixxi 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, 
in the month of March, 1863. 
Monrarty REsuLts. 
Inches 
Mean height of the Barometer for the month, b6 ie 29.826 
Max. height of the Barometer occurred at 11 a. M.on the 19th, .. 30.017 
Min. height of the Barometer occurred at 6 P. M. on the 31st, oe 29.676 
Extreme range of the Barometer during the month, De 30 0.3841 
Mean of the daily Max. Pressures, 90 os st 29.905 
Ditto ditto Min. ditto, ae 90 ae 29.763 
Mean daily range of the Barometer during the month, .. 50 0.142 
0) 
Mean Dry Bulb Thermometer for the month, 50 ee 82.9 
Max. Temperature occurred at 3 Pp. M. on the 31st, oe eo 99.0 
Min. Temperature occurred at 5 & 6 A. M. on the 18th, .. se 71.2 
Liztreme range of the Temperature during the mouth, .. 50 27.8 
Mean of the daily Max. Temperature, oe aie D0 93.3 
Ditto ditto Min. ditto, Ae 66 we 75.0 
Mean daily range of the Temperature during the month, ae 18.3 
Co) 
Mean Wet Bulb Thermometer for the month, 50 50 73.1 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometey,.. 9.8 
Computed Mean Dew-point for the month, 60 an 66.2 
Mean Dry Bulb Thermometer above computed Mean Dew-point, .. 16.7 
Inches 
Mean Elastic force of Vapour for the month,.. 06 es 0.642 
Troy grains 
Mean Weight of Vapour for the month, oe 50 oe 6.88 
Additional Weight of Vapour required for complete saturation, a5 A. 91 
Mean degree of humidity for the month, complete saturation being unity, 0.58 
Inches 
Rained No. days, Max. fall of rain during 24 hours, .. oc Nil. 
Total amount of rain during the month, .. ake ee Nil- 
Prevailing direction of the Wind, ee oe 8. &S. W. 
