Meteorological Observations, xevil 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Ofice, Calcutta, 
in the month of December 1871, 
. Montuty Rusvucis. 
Inches- 
Mean height of the Barometer for the month.., ... 80.043 
Max. height of the Barometer occurred at 10 A. “a. on the 14th. wv» 80.197 
Min. height of the Barometer occurred at 4 p.m. on the Ist. ... 29.880 
Extreme range of the Barometer during the month “4 ivet ODA. 
Mean of the daily Max. Pressures .., ‘ne oil »». 30.118 
Ditto ditto Min. ditto : aa ... 29.986 
Mean daily range of the Barometer during the month <a ti O33 
O) 
Mean Dry Bulb Thermometer for the month .., oh ee) Oe 
Max. Temperature occurred at 2 y. M. on the Ist. a ivy Ss Oa 
Min. Temperature occurred at 7 A. M, on the 29th. a) 266.0 
Extreme range of the ‘Temperature during the month ey Toe yf 
Mean of the daily Max. Temperature ., yea tae ih Oo 
_ Ditto — ditto Min. Gitko,. a. <<! NOLS 
Mean daily range of the Temperature during the month.. bas) SS 
Mean Wet Bulb Thermometer for the month os 63.1 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 5.9 
Computed Mean Dew-point for the month * 58.4 
Mean Dry Bulb Thermometer above computed m mean Dew- -point , 10.6. 
Teas 
Mean Elastic force of Vapour for the month .., se . 0.496 
Troy grain. 
Mean A of Vapour for the month MA ». 5.46 
Additional Weight of Vapour required for complete saturation ... 2.30 
Mean degree of humidity for the month, complete saturation being unity 0.70 
oO 
Mean Max. Solar radiation Thermometer for the month .., 133.6. 
Inches. 
Rained no days,—Max. fall of rain during 24 hours... » =Nil 
Total amount of rain during the month ven. aan 
Total amount of rain indicated by the Gauge* attached to the anemo- rs 
Ni 
meter during the month __.. ab oy ee 
Prevailing direction of the Wind... ... W.N.W.& NW. 
* Height 70 feet 10 inches above ground. 
