Meteorological Observations. cli 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, 
in the month of July, 1863. 
Montuty Resvrts. 
Inches 
Mean height of the Barometer for the month, .. ee se tu 2oLoLO 
Max. height of the Barometer occurred at 11 a.m. on the 10th, -- 29.688 
Min. height of the Barometer occurred at 5 Pp. M. on the 18th, «. 29.312 
Hixtreme range of the Barometer during the month, Be -- 0.376 
Mean of the Daily Max. Pressures, .. oe 50 .- 29.572 
Ditto ditto Min. ditto, .. O0 are «. 29.459 
Mean daily range of the Barometer during the month, .. e- 0.118 
oO 
Mean Dry Bulb Thermometer for the month, .. es ee 83.4, 
Max. Temperature occurred at 3 P. M. on the 25th, se oe 92.4 
Min. Temperature occurred at 5 a. M. on the 30th, ae ee 78.8 
Lixtreme range of the Temperature during the month, .. oe 13.6 
Mean of the daily Max. Temperature, OC es a 88.3 
Ditto ditto Min. ditto, .. Be es ate 80.2 
Mean daily range of the Temperature during the month, .. es 8.1 
Mean Wet Bulb Thermometer for the month, .. as a0 79.8 
Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer, .. 3.6 
Computed Mean Dew-point for the month, .. ae we 77.3 
Mean Dry Bulb Thermometer above computed Mean Dew-point, 66 6.1 
Inches 
Mean Elastic force of Vapour for the month, .. oe ee 0.919 
Troy grains 
Mean Weight of Vapour for the month, we 00 © ae 9.86 
Additional Weight of Vapour required for complete saturation, sis 2.10 
Mean degree of humidity for the month, complete saturation being unity, 0.82 
Inches 
Rained 25 days, Max. fall of rain during 24 hours, eo ee 1.96 
Total amount of rain during the month, ce oe no dll 24 
- Prevailing direction of the Wind, .. oe o 8.08. H,.& HX. 
