Meteorological Observations. Ixxi 
Abstract of the Results of the Hourly Meteorological Observations 
tuken at the Surveyor Generals Office, Culcutta, in the 
mouth of Septemper 1866. 
Montruty Resutts. 
Inches. 
Mean height of the Barometer for the month.. ... 29.666 
Max. height of the Barometer occurred at 10 a. 3. on the 23rd... 29.855 
Min. height of the Barometer occurred at 3 p. M. on the 9th ... 29.444 
Extreme range of the Barometer during the month wi ze COrAMI 
Mean of the daily Max. Pressures... on ae ... 29.724 
Ditto ditto Min. ditto ee ... 29.597 
Mean daily range of the Barometer during the month ... ee OMT, 
) 
Mean Dry Bwb Thermometer for the month _.. moe .. = 83.4 
Max. Temperature occurred at 3 Pp. M. on the 30th “i Joo he eae 
Min. Temperature occurred at 5 a. M. on the 26th Hi eo | Cts) 
Extreme range of the Temperature during the month “fis wa > 18.6 
Mean of the daily Max. Temperature .. bet nae Be meh) 
Ditto ditto Min. ditto, + .. 80.5 
Mean daily range of the Temperature during the month.. ‘ 9.0 
Mean Wet Bulb Thermometer for the month... 81. 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 3. 
anNwsd 
Computed Mean Dew-point for the month Be Benin 
Mean Dry Bulb Thermometer above computed n mean Dew- -point ... 5.6 
Inches. 
Mean Elastic force of Vapour for the month ... son Soe ONION 
Troy grain. 
Mean Weight of Vapour for the month wh ee O29 
Additional Weight of Vapour required for complete saturation ... 1.99 
Mean degree of humidity for the month, complete saturation neue unity 6 8h 
Inches. 
Rained 23 days,—Max. fall of rain during 24 hours ae .. 3.84 
Total amount of rain during the month Bo ET 
Total amount of rain indicated by the Gauge attached to the anemo- 
meter during the month __.. on BE oD eo Or 
Prevailing direction of the Wind a oe 8.8. E.& 5. 
