Meteorological Observations. lv 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Caleutta, 
in the month of July, 1865. 
Montuty Resvtrs. 
Inches 
Mean height of the Barometer for the month, .. an es 29.575 
Max. height of the Barometer oc¢urred at 9 & 10 A. M.on the 28th, .. 29.803 
Min. height of the Barometer occurred at 3 P. M. on the 7th, e. 29.380 
Extreme range of the Barometer during the month, 6 o- § «=: 0,428 
Mean of the Daily Max. Pressures,.. oe ee ee 29.625 
Ditto ditto Min. ditto, .. he ee ee 29,5019 
Mean daily range of the Barometer during the month, .. «+ 0,106 
‘ ° 
Mean Dry Bulb Thermometer for,the month, .. aa == 83.9 
Max. Temperature occurred at 1 P. M. on tho 3rd, a0 a 92.6 
Min. Temperature occurred at. Midnight on the 30th, oe ee 77.4 
Extreme range of the Temperature during the month, .. Ae 15,0 
Mean of the daily Max. Temperature, es a 35 88.5 
Ditto ditto Min. ditto, .. ee ee oe 80.5 
Mean daily range of the Temperature during the month,.. ae 8.0 
Mean Wet Bulb Thermometer for the month, .. ae aa 80.8 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer, .. 3.1 
Computed Mean Dew-point forthe month, .. oo ae 78.6 
Mean Dry Bulb Thermometer above computed Mean Dew-point, a 5.3 
' Inches 
Mean Elastic force of Vapour for the month, .. oe es 0,958 
Troy grains 
Mean Weight of Vapour for the month, ee ee s, 10:28 
Additional Weight of Vapour required for complete saturation, ae 1.85 
Mean degree of humidity for the month, complete saturation being unity, 0.85 
Inches 
Rained 29 days, Max. fall of rain during 24 hours, a sc 2.79 
Total amount of rain during the month, “ A se LATS 
Prevailing direction of the Wind, ..* ee es S.&S8. E. 
