Meteorological Observations. Ixxix 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Culcutla, in the 
mouth of October 1866. 
Montruty Resvtrts. 
Tnches. 
Mean height of ie Barometer for the month.. ... 29.838 
Max. height of the Barometer occurred at 9 & 10 4. xt. on the 28th... 30.004 
Min. height of the Barometer occurred at 4 a. M. on the 25th ... 29.514, 
Extreme runge of the Barometer during the month wee ... 0.490 
Mean of the daily Max. Pressures... cas oe ... 29.905 
Ditto ditto Min. ditto ae whe eo Dali Ces 
Mean daily range of the Barometer during the month ... goa WIE, 
Oo) 
Mean Dry Bulb Thermometer for the month oe San spars ONLY) 
Max. Temperature occurred at Zp. M. on the 2nd ma sco BH 
Min. Temperature occurred at 6 4. M. on the 26th te Bean ty) 
Letreme range of the Temperature during the month ie Pe see AOS) 
Mean of the daily Max. Temperature ... ite si bea. ed 
Ditto —_ditto Min. ditto, sue ; sth ae dda 
Mean daily range of the Temperature during the month.. sie 9.7 
Mean Wet Bulb Thermometer for the month _... lets 
Mean Dry Bulb Therinometer above Mean Wet Bulb Thermometer 4.2 
Computed Mean Dew-point for the month ie aoe ot alas) 
Mean Dry Bulb Thermometer above computed mean Dew- -point ... 7.1 
Inches. 
Mean Elastic force of Vapour for the mouth .., sf .. 0.849 
Troy grain. 
Mean Weight of Vapour for the month ra Hey ROS 
Additional W eight of Vapour required for complete saturation ... 2.31 
Mean degree of humidity for the month, complete saturation being unity 0.80 
Inches. 
Rained 12 days,—Max. fall of rain during 24 hours ie eee 00 
Total amount of rain during the month seen (tess) 
Total amount of rain indicated by the Gauge attached to the ancmo- 
meter during the month .. ae aoe Eee or 
Preyailing direction of the W ind a ees NGG N.W. & N. EE. 
