Meteorological Observations. XXilL 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of March, 1865. 
Montuty Resvtrs. 
Inches 
Mean height of the Barometer for the month, .. o e. 29.920 
Max. height of the Barometer occurred at 10 a.M. on thelst & 16th,.. 30.094 
Min. height of the Barometer occurred at 5 Pp. M. on the 28th, es) 29,765 
Extreme range of the Barometer during the month, ee ee 0.329 
Mean of the Daily Max. Pressures,.. ee a e- 30.000 
Ditto ditto Min. ditto, .. aa as e. 29.859 
Mean daily range of the Barometer during the month, .. oe» = O14. 
o 
Mean Dry Bulb Thermometer for the month, .. ee eo 79.4 
Max. Temperature occurred at 3 P. M. on the 28th, ee ac 97.8 
Min. Temperature occurred at 7 a. M. on the 1st, Sc es 63.6 
Extreme range of the Temperature during the month, aa AF 34,2 
Mean of the daily Max. Temperature, ee ee an 88.5 
Ditto ditto Min. ditto, .. He ee oe 71.6 
Mean daily range of the Temperature during the month, .. ee 16.9 
Mean Wet Bulb Thermometer for the month, .. be. Ss 70.7 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer, .. 8.7 
Computed Mean Dew-point for the month, .. 50 ts 64.6 
Mean Dry Bulb Thermometer above computed Mean Dew-point, . .. 14.8 
Inches 
Mean Elastic force of Vapour for the month, .. we s- 0609 
Troy grains 
Mean Weight of Vapour for the month, ee ee ws 6.58 
Additional Weight of Vapour required for complete saturation, <a 4.04 
Mean degree of humidity for the month, complete saturation being unity, 0.62 
Inches 
Rained 6 days, Max. fall of rain during 24 hours, an & 1.08 
Total amount of rain during the month, ee ve Pe 1.96 
Prevailing direction of the Wind, ., ee . S.&W.& NW. 
