Meteorological Observations, Ixxxi 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, 
in the mouth of October 1871, 
Monrory Resvtrs. 
Inches. 
Mean height of the Barometer for the month.. ... 29.804 
Max. height of the Barometer occurred at 9 a. Me. on the 16th. sve SOROEL, 
Min. height of the Barometer occurred at 3 p.m. on the 26th. ,,, 29.624 
Extreme range of the Barometer during the month ie sah FOB bee 
Mean of the daily Max. Pressures... BA aa ... 29.867 
Ditto ditto Min. ditto ; Pe ». 29.748 
Mean daily range of the Barometer during the month ate sae OLS 
fe) 
Mean Dry Bulb Thermometer for the month ,,. eee ee 
Max. ‘Temperature oosnrred at 3 y. M. on the 4th. ret vb BO 
Min. Temperature occurred at 5 & 6 a. M, on the 26 th& 27th 4 GeO 
Extreme vange of the ‘Temperature during the month 2 mw 21.0 
Mean of the daily Max. Temperature .. oat a he. aed 
Ditto — ditto Min. ditto, : ries (21 
Mean daily range of the Temperature during the month.. vob, SOD 
Mean Wet Bulb Thermometer for the month ... 76.7 
Mean Dry Buib Thermometer above Mean Wet Bulb Thermometer 4.9 
Computed Mean Dew-point for the month 73:3 
Mean Dry Bulb Thermometer above computed mean Dew- -point .. 8.3 
tienes 
Mean Elastic force of Vapour for the month .., ove «. 0.809 
Troy grain. 
Mean Weight of Vapour for the month ah ..) SQ 
Additional Weight of Vapour requiréd for complete saturation ... 2.64 
Mean degree of humidity for the month, complete saturation being unity 0.77 
oO 
Mean Max. Solar radiation Thermometer for the month .., 145.6 
Inches. 
Rained 9 days,—Max. fall of rain during 24hours __... on, 2.58 
Total amount of rain during the month i 7.05 
Total amount of rain indicated by the Gauge* atiached to the anemo- ais 
meter during the month 
Prevailing direction ofthe Wind ... ... W. N. W, N. W. & S. by W. 
* Wojoht 70 feet 10 inches above ground. 
