Meteorological Observations. lv 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of January, 1863. 
Mownruiy RKesucrs. 
Inches 
Mean height of the Barometer for the month, 96 ee 30.043 
Max. height of the Barometer occurred at 10 A.M. on the 26th, .. 30.189 
Min. height of the Barometer occurred at 6 P. M. on the 13th, oe 29.919 
Eutreme range of the Barometer during the month, 60 oe 0.270 
Mean of the daily Max. Pressures, 50 30 oe 30.121 
Ditto ditto Min. ditto, ie a .. 29.984; 
Mean daily range of the Barometer during the month, .. an 0.137 
to) 
Mean Dry Bulb Thermometer for the month, oe ee 67.3 
Max. Temperature occurred at 3 P. M. on the 2nd, ate Sts 79.9 
Min. Temperature occurred at 7 a. M. on the 13th, ve ete 54.8 
Lxtreme range of the Temperature during the month, .. 0 25.1 
Mean of the daily Max. Temperature, 50 a0 oe 76.5 
Ditto ditto Min. ditto, ate OC 50 59.5 
Mean daily range of the Temperature during the month, Ol 17.0 
() 
Mean Wet Bulb Thermometer for the month, a ae 61.2 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer,.. 6.1L 
Computed Mean Dew-point for the month, oo e 56.3 
Mean Dry Bulb Thermometer above computed Mean Dew-point, .. 11.0- 
Inches 
Mean Elastic force of Vapour for the month,.. ee ee 0.462 
Troy grains 
Mean Weight of Vapour for the month, oe ve oe 5.11 
Additional Weight of Vapour required for complete saturation, a0 2.26 
Mean degree of humidity for the month, complete saturation being unity, 0.69 
Inches 
Drizzled 1 day, Max. fall of rain during 24 hours, ae oe ap Nite 
Total amount of rain during the month, .. a6 8 Nil. 
Prevailing direction of the Wind, as oe oe N, 
