Meteorological Observations, Ixxiii 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, 
in the month of September 1871. 
Montuty Resvtrs. 
Inches. 
Mean height of the Barometer for the month.. ... 29.676 
Max. height of the Barometer occurred at 10 a. ‘at. on the 28th. .«. 29.884 
Min. height of the Barometer occurred at 3 p.m. on the 12th. .., 29.470 
Extreme range of the Barometer during the month i . 0.414 
Mean of the daily Max. Pressures .., nee bis wee 29.734 
Ditto ditto Min. ditto : sins ... 29.610 
Mean daily range of the Barometer during the month... oe 0.124 
o 
Mean Dry Bulb Thermometer for the month ,., vee ea 
Max. Temperature occurred at 2 ». M. on the 4th. oa ine 
Min. 'l'emperature occurred at 9 a. M, on the 13th. ae ee Ss 
Extreme range of the Temperature during the month sax saa ee 
Mean of the daily Max. Temperature ... pee as - 5 oe 
Ditto —_ ditto Min. ditto, . .. ia oe 
Mean daily range of the Temperature during the month,., in 7.9 
Mean Wet Bulb Thermometer for the month ... sf 80.0 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 2.5 
Computed Mean Dew-point for the month 78.2 
Mean Dry Bulb Thermometer above computed mean Dew- -point. ., 4.3 
 Soatiae 
Mean Elastic force of Vapour for the month .,., aes ». 0.946 
Troy grain. 
Mean Weight of Vapour for the month Si 35 te, 7 RO 
Additional ht of Vapour required for complete saturation... 1.47 
Mean degree of i iinidity for the month, complete saturation being unity 0.87 
° 
Mean Max. Solar radiation Thermometer for the month ,,, 141.9 
Inches. 
Rained 23 days,—Max. fall of rain during 24hours ad — 
Total amount of rain during the month 
Total amount of rain indicated by the Gauge* attached to the anemo- a 
meter during the month dl ons ee a 
Prevailing direction of the Wind... ... 's by W.S.S.E.&8 
* Height 70 feet 10 inches above ground. 
