Meteorological Observations. XXill 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of October, 1863. 
Montuty Rrsuuts. 
Inches 
Mean height of the Barometer for the month, ete ate 29.814 
Max. height of the Barometer occurred at 9 a. M. on the 21st, ae 30.029 
Min. height of the Barometer occurred at 4 Pp. M. on the 5th, se 29,049 
Extreme range of the Barometer during the month, o6 06 0.480 
Mean of the daily Max. Pressures, 60 80 go 29.880 
Ditto ditto Min. ditto, 56 50 ee 29.756 
Mean daily range of the Barometer during the month, .. 3 0.124 
0 
Mean Dry Bulb Thermometer for the month, 50 ac 81.3 
Max. Temperature occurred at 2 P. M. on the 13th, 00 Oo 90.4 
Min. Temperature occurred at 5 a. M. on the 23rd, Me aa 79 9 
Betreme range of the Temperature during themonth, .. b6 18.2 
Mean of the daily Max. Temperature, die 6c ac 86.8 
Ditto ditto Min. ditto, ee AS Se 77.0 
Mean daily range of the Temperature during the month, ie 9.8 
) 
Mean Wet Bulb Thermometer for the month, os oc 76.5 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer,. . 4.8 
Computed Mean Dew-point for the month, fakes ob 73.1 
Mean Dry Bulb Thermometer above computed Mean Deck “point, .. 8.2 
Inches 
Mean Elastic force of Vapour for the month,.. ae oe 0.803 
Troy grains 
Mean Weight of Vapour for the month, ws oe oe 8.65 
Additional Weight of Vapour required for complete saturation, ne 2.59 
Mean degree of humidity for the month, complete saturation being unity, 0.77 
Inches 
Rained 9 days, Mas. fall of rain during 24 liours, Je eh) 1.08 
Total amount of rain during the month, .. a bo 3.48 
Prevailing direction of the Wind, ee oe N. & 8. 
