Meteorological Observations. 



VII 



Abstract of the Results of the Hourly Meteorological Observations 

 taken at the Surveyor General's Office, Calcutta, 

 in the month of January 1868. 

 Monthly Results. 



Inches, 



Mean height of the Barometer for the month... „. 30 038- 



Max. height of the Barometer occurred at 9 a. m. on the 15th .. 30 207 



Mm. height of the Barometer occurred at 5 p. m. on the 23rd. \„ 29 877 



Extreme range of the Barometer during the month ... 330* 



Mean of the daily Max. Pressures ... ... 30 120 



Ditto ditto Min. ditto ... ',','. " # "' 29 978- 



Mean daily range of the Barometer during the month ... ,. 142 



Mean Dry Bulb Thermometer for the month ... 68 3 



Max Temperature occurred at 2 & 3 p. m. on the 28th, 29tli,"& 30th 80 



Min. lemperature occurred at 7 a. m. on the 3rd. ... 55 4 



Extreme range of the Temperature during the month '" 24 6 



Mean of the daily Max. Temperature... ... >jqq 



Ditto ditto Min. ditto, ... .'.'.' "' 61 ' 



Mean daily range of the Temperature during the month... " ,,. 156 



Mean Wet Bulb Thermometer for the month 6 1 q 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 6 7 



Computed Mean Dew-point for the month ... 56 V 



Mean Dry Bulb Thermometer above computed mean Dew-point ... 12.1 



Inches. 

 Mean Elastic force of Vapour for the month ... ,., 0.461 



Troy grain. 

 Mean Weight of Vapour for the month . 5 qs 



Additional Weight of Vapour required for complete saturation !" 2.52 

 Mean degree of humidity for the month, complete saturation beino- unity 67 



Inches. 

 Rained 1 day,— Max. fall of rain during 24 hours ... ... 05 



Total amount of rain during the month ... ... ." 05 



Total amount of rain indicated by the Gauge attached to the anemo- 

 meter during the month ... ... ... 02 



Prevailing direction of the Wind... ... "' j^ 



