Meteorological Observations. vil 
Abstract of the Resulls of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, 
in the month of July 1871. 
Monruty Resvtrs. 
Inches. 
Mean height of the Barometer for the month.. »-. 29.551 
Max. height of the Barometer occurred at 11 A. 3t. on the 13th. wo. 29.724 
Min. height of the Barometer occurred at 4 P.M. on the 30th. ... 29.359 
Evireme range of the Barometer during the month ay see. 0.365 
Mean of the daily Max. Pressures... wa dh .. 29.606 
Ditto ditto Min. ditto Rie ve. 29.492 
Mean daily range of the Barometer during the month .., Sear 0.108 
oO 
Mean Dry Bulb Thermometer for the month __ .., oes ve «= 82.5 
Max. Temperature occurred at 1 p. mM. on the 29th. up! 90.5 
Min. Temperature occurred at 6 4. mM, on the 2nd. as 75.5 
Extreme range of the Te ‘mperature during the month s¢ 15.0 
Mean of the daily Max. Temperature .. 86.8 
Ditto ditto Min. ditto, E eG eer ie 
Mean daily range of the Temperature during the month... te 74 
Mean Wet Bulb Thermometer for the month ... 80.0 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 2.5 
Computed Mean Dew-point for the month as 78.2 
Mean Dry Bulb Thermometer above computed mean Dew point .. 4.3 
ATiphedl 
Mean Elastic force of Vapour for the month .., see ». 0.946 
Troy grain. 
Mean Weight of Vapour for the month ” egies 
Additional Weight of Vapour required for complete saturation ... 1.47 
Mean degree of humidity for the month, complete saturation being unity 0.87 
o 
Mean Max. Solar radiation Thermometer for the month .., 137.2 
Inches. 
Rained 30 days,—Max. fall of rain during 24 hours... vee 3.25 
Total amount of rain during the month . 15.93 
Total amount of rain indicated by the Gauge* attached to the amemo- 
meter during the month __... nee eee . 14.77 
Prevailing direction of the Wind... ee 8 by E,S&SS W. 
* Height 70 feet 10 inches above ground. 
