Meteorological Observations. lv 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, in the 
month of July 1866. 
Montuiy ReEsvtrs. 
Inches. 
Mean height of the Barometer for the month,. ... 29.587 
Max. height of the Barometer occurred at 10 a. “M.on the 14th, ... 29.714 
Min. height of the Barometer occurred at 3 Pp. M. on the 9th, —... 29.433 
Extreme} range of the Barometer during the month, Se jou Onttell 
Mean of the daily Max. Pressures, ... a ~~ obo POOR! 
Ditto ditto Min. ditto bee ... 29.527 
Mean daily range of the Barometer during the ‘month, rou goo OIG) 
Oo 
Mean Dry Bulb Thermometer for the month, 83.1 
Max. Temperature occurred at 3 Pp. m. on the 9th 93.2 
Min. Temperature occurred at 5 a. M. on the 3rd . 74.4 
Extreme range of the Temperature ane the month, 18.8 
Mean of the daily Max. Temperature .. a 88.0 
Ditto ditto Min. ditto, oni owt 
Mean daily range of the Temperature during the month,.. 8.3 
Mean Wet Bulb Thermometer for the month, ... 80.1 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer, 3.0 
Computed Mean Dew-point for the month, 17820 
Mean Dry Bulb Thermometer above computed n mean Dew- -point. . 5.1 
oe 
Mean Elastic force of Vapour for the month, ... ae .. 0.940 
Troy grain. 
Mean Weight of Vapour for the month ba 10309 
Additional Weight of Vapour required for complete saturation, ... 1.77 
Mean degree of humidity for the month, complete saturation being unity 0.85 
Inches. 
Rained 26 days,—Max. fall of rain during 24 hours nak soa 083 
Total amount of rain during the month, .. 13.42 
Total amount of rain indicated by the Gauge attached to the anemo- 
meter during the month. spo lade 
Prevailing direction of the Wind, ORL ORR, CSR 
