Meteorological Observations. 



Ixxxix 



Abstract of the Results of tlie Hourly Meteorological Observations 

 taken at the Surveyor General's Office, Calcutta, 



in the month of December, 1865. 

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



Height of the Cistern of the Standard Barometer above the Sea-level, 18 ft. 11 in. 



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

 dependent thereon. 





O D 









-° £ 









4J m - 



Range 



of the Barometer 



3 S, 

 hi 



Range of the Tempera- 





%lA 



during the d 



iy. 



ture during the day. 



















Date. 

















§ ~ a 



Max. 



Min. 



Diff. 



c J3 



Sh. 



Max. 



Min. 



Diff. 



. 



3 









w, 













Inches. 



Inches. 



Inches. 



Indies. 







o 











1 



29.970 



29.049 



29.906 



0.143 



72.9 



83.5 



65.1 



18.4 



2 



.9S4 



.051 



.928 



.123 



72.7 



82.6 



66.0 



16.6 



3 



30.011 



.079 



.955 



.124 



75.2 



85,6 



67.4 



18.2 



4 



.020 



.114 



.960 



.154 



74.9 



83.6 



67.8 



15.8 



5 



29.999 



.071 



.929 



.142 



74.0 



82.2 



68.2 



14.0 



6 



30.031 



.093 



.984 



.109 



72.8 



81.4 



64.8 



16.6 



7 



.013 



.098 



.957 



.141 



72.9 



81.8 



65.0 



16.8 



8 



29.972 



.051 



.927 



.124 



75.3 



83.4 



69.4 



14.0 



9 



30.010 



.090 



.964 



.126 



74.3 



82.2 



67.8 



14.4 



10 



.042 



.134 



.995 



.139 



69.9 



78.8 



61.4 



17.4 



11 



.060 



.164 



.975 



.189 



67.6 



76.3 



59.5 



16.8 



12 



.062 



.154 



30.005 



.149 



64.9 



74.5 



56.8 



17.7 



13 



.029 



.107 



29.950 



.157 



66.3 



76.2 



5S0 



18.2 



14 



.054 



.139 



.993 



.146 



67.1 



77.4 



58.6 



18.8 



15 



.066 



.150 



.995 



.155 



68.3 



77.8 



60.0 



17.8 



16 



.053 



.130 



.997 



.133 



68.3 



77.8 



60.2 



17.6 



17 



.031 



.103 



.985 



.118 



68.3 



78.7 



60.0 



18.7 



18 



.021 



.082 



.971 



.111 



69.0 



79.0 



60.6 



18.4 



19 



.037 



.112 



.974 



.138 



69.5 



79.4 



60.2 



19.2 



20 



.092 



.185 



30.048 



.137 



70.4 



80.6 



61.5 



19.1 



21 



.101 



.172 



.043 



.129 



72.0 



82.6 



62.8 



19.S 



22 



.126 



.196 



.064 



.132 



71.9 



81.2 



63.6 



17.6 



23 



.101 



.178 



.043 



.135 



71.0 



80.4 



62.8 



17.6 



24 



.068 



.139 



.005 



.134 



71.7 



81.0 



64.3 



16.7 



25 



■ .060 



.156 



29.975 



.181 



71.9 



81.8 



63.8 



18.0 



26 



.015 



.096 



.940 



.156 



72.7 



82.0 



64.8 



17.2 



27 



29.974 



.052 



.909 



.143 



74.2 



81.7 



67.0 



14,7 



28 



.940 



.016 



.883 



.133 



72.8 



81.0 



66.5 



14.5 



29 



30.011 



.070 



.965 



.105 



71.5 



76.2 



68.4 



7.8 



30 



.050 



.146 



.976 



.170 



68.1 



74.6 



62.6 



12.0 



31 



.035 



.134 



.966 



.168 



68.5 



78.0 



60.0 



18.0 



The Mean Height of the Barometer, as likewise the Dry and Wot Bulb Ther- 

 mometer Means are derived from the hourly Observations made during the day. 



