Meteorological Observations. XV 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, 
in the month of February 1871, 
Monrnty Resvutrs. 
Inches. 
Mean height of the Barometer for the month.. ... 29.907 
Max. height of the Barometer occurred at 10a. M.on the Ist. .., 30.116 
Min. height of the Barometer occurred at 3&4P.M. onthedth. ... 29.803 
KLetreme vange of the Barometer during the month a La Ola 
Mean of the daily Max. Pressures _... wif 43 ... 29.985 
Ditto ditto Min. ditto +P .. 29.849 
Mean daily range of the Barometer during the month Sag «. 0.136 
o 
Mean Dry Bulb Thermometer for the month Gs aS eye: 
Max. Temperature oceurred at 2 p. M. on the 5th. aes wn oO 
Min. Temperature occurred at 7 a.m, onthe 2nd. a te (606 
Eetreme range of the ate during the month 3 et) coe 
Mean of the daily Max. Temperature .. Pig are .. 84.0 
Ditto ditto Min. ditto, ; dee ye Oe 
Mean duily vange of the ‘Temperature during the month. 0 Lace 
Mean Wet Bulb Thermometer for the month... 67.1 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer (be 
Computed Mean Dew-point for the month ; » > 6Fe 
Mean Dry Bulb Thermometer above computed mean Dew-point .. 12.2 
‘Taare 
Mean Elastic force of Vapour for the month .., 1h s« OLGGR 
Troy grain, 
Mean Weight of Vapour for the month aa pe oe Coke 
Additional Weight of Vapour required for complete saturation ee a Se 
Mean degree of humidity for the month, complete saturation being unity 0.67 
te) 
Mean Max. Solar radiation Thermometer for the month .., 138.1 
Inches. 
Rained 3 days,—Max. fall of rain during 24 hours... én, O80 
Total amount of rain during the month we Og 
Total amount of rain indicated by the Gauge* attached to the anemo- 
meter during the month _.. i ii ee snont OfaD 
Prevailing direction of the Wind... .., SSW,&S W. 
* Height 70 feet 10 inches above ground, 
