Meteorological Observations. 
xlvii 
Abstract of the Jlesults of the Sourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of October, 1800. 
Monthly Hestjlts. 
Inches. 
Mean height of the Barometer for the month, .. .. 29.810 
Max. height of the Barometer, occurred at 10 A. M. on the 13th, . . 29.959 
Min. height of the Barometer, occurred at 3 p. M. on the 2nd, .. 29.570 
"Extreme range of the Barometer during the month, .. .. 0.389 
Mean of the Daily Max. Pressures, . . . . . . 29.876 
Ditto ditto Min. ditto, .. .. .. 29.754 
Mean daily range of the Barometer during the month, .. .. 0.122 
o 
Mean Dry Bulb Thermometer for the month, .. .. 81.9 
Max. Temperature occurred at 2 P. M. on the 6th, .. .. 91.2 
Min. Temperature occurred at 5 A. M. on the 27 th, .. .. 72.6 
Extreme range of the Temperature during the month, . . . . 18.6 
Mean of the daily Max. Temperature, .. .. .. 87.6 
Ditto ditto Min. ditto, .. .. .. 77.5 
Mean daily range of the Temperature during the month, .. 10.1 
o 
Mean Wet Bulb Thermometer for the month, .. .. 76.9 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer,.. 5.0 
Computed Mean Dew Point for the month, . . . . 74.4 
Moan Dry Bulb Thermometer above computed Mean Dew-point, .. 7.5 
Inches 
Mean Elastic force of vapour for the month, . . . . . . 0.838 
Troy grains 
Mean weight of Vapour for the month, .. .. .. 9.00 
Additional weight of Vapour required for complete saturation, .. 2.44 
Mean degree of humidity for the month, complete saturation being imity, 0.79 
Inches 
Rained 6 days, Max. fall of rain during 24 hours, . . . . 1.26 
Total amount of rain during the month, . . . . . . 1.68 
Prevailing direction of the Wind, .. .. S. & N. 
