1 



Meteorological Observations. 



Abstract of tie Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of June 1868. 



Monthly Eesults. 



Mean height of the Barometer for the month... 



Max. height of the Barometer occurred at 9 a. m. on the 1st. 



Min. height of the Barometer occurred at 5 p. m. on the 13th. 



Extreme range of the Barometer during the month 



Mean of the daily Max. Pressures ... 



Ditto ditto Min. ditto 

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



Inches. 



, 29.552 

 29.804 

 , 29.309 

 . 0.495 

 . 29.606 

 . 29.495 

 . 0.111 



Mean Dry Bulb Thermometer for the month 

 Max. Temperature occurred at 3 p. m. on the 4th. 

 Min. Temperature occurred at 5 a. m. on the 13th. ... 

 Extreme range of the Temperature during the month 

 Mean of the daily Max. Temperature ... 



Ditto ditto Min. ditto, 

 Mean daily range of the Temperature during the month.. 



83.6 

 96.2 

 77.0 

 19.2 

 87.9 

 79.8 

 8.1 



Mean "Wet Bulb Thermometer for the month ... ... 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 

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



Mean Dry Bulb Thermometer above computed mean Dew-point 



Mean Elastic force of Vapour for the month 



80.3 

 3.3 



78.0 

 5.6 



Inches. 

 . 0.940 



Troy grain. 



Mean Weight of Vapour for the month ... ... , ... l°-°j[ 



Additional Weight of Vapour required for complete saturation ... 1.9b 

 Mean degree of humidity for the month, complete saturation being unity 0.84 



Rained 22 days,- 



-Max. fall of rain during 24 hours 



Inches. 



... 5.85 



Total amount" of rain during th e month ... ... • • • 26 - 61 



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



meter during the month ... ; « rn'o -nr i"a 



Prevailing direction of the Wind... 



* The amount of rain could not be determined by the Anemometer on \ 

 13th & 14th owing to the paper tearing. 



