Meteorological Observations. 



lvii 



Abstract of the Results of the Hourly Meteorological Observations 

 taken at the Surveyor General's Office, Calcutta, 

 in the month of December, 1860. 



Latitude 22° 33' 1" North. Longitude 88° 20' 34" East. 



Feet. 

 Height of the Cistern of the Standard Barometer above the Sea level, 18.11 



Daily Means, &c, of the Observations and of the Hygrometrical elements 

 ependent thereon. 



Date. 



Mean Height of 

 the Barometer 

 at 32° Faht. 





Inches. 



1 



29.984 



2 



Sunday. 



3 



.999 



4 



.9S9 



5 



.991 



6 



.977 



7 



.967 



8 



.994 



9 



Sunday. 



10 



30.016 



11 



.014 



12 



29.993 



13 



.980 



14 



.998 



15 



30.050 



16 



Sunday. 



17 



29.993 



18 



.984 



19 



.992 



20 



30.007 



21 



.033 



22 



.050 



23 



Sunday. 



24 



.050 



25 



.048 



26 



.034 



27 



.028 



28 



.023 



29 



.044 



30 



Sunday. 



31 



.086 



Range c 



f the Barometer 



pq <u 



Range of the Tempera- 



during the di 



F- 



b§ 



ture during the day. 









o a 



a A 







Max. 



Min. 



Diff. 



Max. 







Min. 



Diff. 



Inches. 



Inches. 



Inches. 







o 







30.058 



29.931 



0.127 



70.3 



80.4 



63.4 



17.0 



.056 



.950 



.106 



68.7 



79.0 



60.8 



18.2 



.075 



.943 



.132 



68.9 



77.0 



60.4 



16.6 



.069 



.937 



.132 



69.7 



78.6 



62.6 



16.0 



.048 



.926 



.122 



69.6 



79.2 



62.1 



17.1 



.049 



.905 



.144 



70.3 



80.0 



63.0 



17.0 



.090 



.947 



.143 



69.4 



79.9 



61.2 



18.7 



.092 



.964 



.128 



67.5 



77.6 



60.2 



17.4 



.100 



.951 



.149 



66.2 



77.2 



57.0 



20.2 



.072 



.932 



.140 



65.7 



77.2 



58.0 



19.2 



.069 



.935 



.134 



65.5 



77.0 



56.6 



20.4 



.OSO 



.946 



.134 



66.4 



78.6 



58.0 



20.6 



.149 



.994 



.155 



65.8 



77.8 



57.2 



20.6 



.078 



.932 



.146 



65.1 



76.6 



56.7 



19.9 



.072 



.925 



.147 



65,1 



76.4 



56.2 



20.2 



.063 



.937 



.126 



66.3 



77.0 



57.6 



19.4 



.083 



.937 



.146 



• 66.9 



77.6 



59.6 



18.0 



.097 



.975 



.122 



67.1 



78.0 



59.9 



18.1 



.133 



.973 



.160 



63.8 



75.4 



55.0 



20.4 



.124 



30.009 



.115 



67.7 



78.6 



58.4 



20.2 



.126 



.003 



.123 



67.8 



78.7 



59.0 



19.7 



.120 



29.974 



.146 



66.9 



77.6 



58.2 



19.4 



.110 



.990 



.120 



68.5 



79.4 



5S.8 



20.6 



.095 



.980 



.115 



67.7 



78.8 



58.9 



19.9 



.119 



30.001 



.118 



67.8 



78.6 



59.8 



18.S 



.172 



.035 



.137 



63.6 



75.6 



54.0 



1 21.6 



The Mean height of the Barometer, as likewise the Mean Dry and Wat Bulb 

 Thermometers are derived from the twenty-four hourly observatious made during 

 the day. 



