Meteorological Observations. 
xv 
Abstract of the Jesuits of the Hourly Meteorological Observations 
taken at the Surveyor General's Office , Calcutta , 
in the month of June, 1860. 
Monthly Hesults. 
Inches 
Mean height of the Barometer for the month, . . . . 29.544 
Max. height of the Barometer occurred at Midnight on the 7th, . . 29.74.2 
Min. height of the Barometer occurred at 4 p. H. on the I6th, .. 29.293 
Extreme range of the Barometer during the month, .. .. 0.449 
Mean of the daily Max. Pressures, . . . . . . 29.601 
Ditto ditto Min. ditto, .. .. .. 29.482 
Mean daily range of the Barometer during the month, . . . . 0.119 
o 
Mean Dry Bulb Thermometer for the month, . . . . 84.9 
Max. Temperature occurred at 1 p. M. on the 1st, . . . . 99.2 
Min. Temperature occurred at 3 r. M. on the 19th, .. . . 77.0 
Extreme range of the Temperature during the month, . . . . 22.2 
Mean of the daily Max. Temperature, .. .. .. 91.7 
Ditto ditto Min. ditto, .. .. .. 79.9 
Mean daily range of the Temperature during the month, . . 11,8 
o 
Mean Wet Bulb Thermometer for the month, .. .. 80.6 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer, . . 4.3 
Computed Mean Dew-point for the month, .. .. .. 78.4 
Mean Dry Bulb Thermometer above computed Mean Dew-point, .. 6.5 
Inches 
Mean Elastic force of Vapour for the month, . . . . 0.952 
Troy grains 
Mean Weight of Vapour for the month, .. .. .. 10.17 
Additional Weight of Vapour required for complete saturation, .. 2.32 
Mean degree of humidity for the month, complete saturation being unity, 0.81 
Inches 
Bained 21 days, Max. fall of rain during 24 hours, .. .. 1.32 
Total amount of rain during the month, .. .. .. 6.46 
Prevailing direction of the Wind, . . . . S. & E. 
