Meteorological Observations. xxiii 
Abstract of the Results of the Hourly Meteorological Observations 
talcen at the Surveyor General's Office, Calcutta, 
in the month of July, 18G0. 
Monthly Results. 
Inches 
Mean height of the Barometer for the month, .. .. 29.532 
Max. height of the Barometer occurred at 8 A. M. on the 18th, . . 29.644 
Min. height of the Barometer occurred at 4 P. M. on the 11th, . . 29.373 
Extreme range of the Barometer during the month, .. .. 0.271 
Mean of the Daily Max. Pressures, .. .. .. 29.579 
Ditto ditto Min. ditto, .. .. .. .. 29.475 
Mean daily range of the Barometer during the month, . . . . 0.104 
o 
Mean Dry Bulb Thermometer for the month, . . . . 83.9 
Max. Temperature occurred at 2 & 3 P. M. on the 11th, .. .. 96.8 
Min. Temperature occurred at 4 A. M. on the 23rd, .. .. 77.0 
Extreme range of the Temperature during the month, .. .. 19.8 
Mean of the daily Max. Temperature, .. .. .. 88.8 
Ditto ditto Min. ditto, .. .. •• 80.3 
Mean daily range of the Temperature during the month, . . 8.5 
Mean Wet bulb Thermometer for the month, .. .. .. 80.7 
Mean Dry bulb Thermometer above mean Wet bulb Thermometer, .. 3.2 
Computed Mean-Dew point for the month, .. .. .. 79.1 
Mean Dry bulb Thermometer above computed mean Dew-point, .. 4.8 
Inches 
Mean Elastic force of Vapour for the month, .. .. .. 0.973 
Troy grains 
Mean Weight of Vapour for the month, .. .. .. 10.42 
Additional Weight of Vapour required for complete saturation, .. 1.71 
Mean degree of humidity for the month, complete sat uration being unity, 0.86 
Inches 
Knincd 23 days, Max. fall of rain during 24 hours, .. .. 2.84 
Total amount of rain during the month, .. .. .. 17.92 
Prevailing direction of the Wind, .. .. .. S. & S. E. 
