Meteorological Observations. 



in 



Abstract of the Results of the Hourly Meteorological Observations 

 taken at the Surveyor General's Office, Calcutta, 

 in the month of January, 1858. 



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

 dependent thereon. 



Hour. 



san Height of 

 the Barometer 

 at 32° Faht. 



Range of the Barometer for 



each hour during the 



month. 



3 c 



PP « 



q a 

 ,- *> 



CD t"^ 



itange of the Tempera- 

 ture for each hour 

 during the 

 month. 





Max. 



Min. 



Diff. 



Max. 



Min. 



Diff. 





§ 









s 











Inches. 



Inches. 



Inches. 



Inches. 















o 



Mid- 

 night. 

 1 



29.994 

 .989 



30.109 

 .102 



29.861 

 .859 



0.248 

 .243 



64.1 

 63.5 



69.0 

 68.1 



59.3 

 58.5 



9.7 



9.6 



2 



.977 



.095 



.845 



.250 



62.9 



67.8 



57.8 



10.0 



3 



.969 



.089 



.841 



.248 



62.3 



67.5 



57.1 



10.4 



4 



.973 



.080 



.865 



.215 



61.5 



67.0 



56.6 



10.4 



5 



.976 



.087 



.846 



.241 



61.3 



66.0 



56.7 



9.3 



6 



.993 



.107 



.863 



.244 



60.7 



65.5 



56.6 



8.9 



7 



30.015 



.125 



.872 



.253 



60.4 



65.4 



56.2 



9.2 



8 



.046 



.152 



.908 



.244 



62.3 



68.2 



58.5 



9.7 



9 



.071 



.195 



.930 



.265 



66.3 



69.8 



63.2 



6.6 



10 



.077 



.208 



.940 



.268 



69.8 



73.1 



66.8 



6.3 



11 



.056 



.189 



.923 



.266 



73.2 



76.8 



70.2 



6.6 



Noon. 



.023 



.170 



.903 



.267 



75.4 



80.1 



72.2 



7.9 



1 



29.990 



.123 



.873 



.250 



77.1 



82.2 



73.8 



8.4 



2 



.963 



.095 



.838 



.257 



77.8 



83.4 



73.6 



9.8 



3 



.943 



.072 



.824 



.248 



77.8 



84.0 



72.0 



12.0 



4 



.935 



.062 



.812 



.250 



76.2 



82.2 



72.4 



9.8 



5 



.942 



.062 



.822 



.240 



74.4 



80.6 



70.4 



10.2 



6 



.951 



.075 



.834 



.241 



71.6 



77.2 



68.0 



9.2 



7 



.968 



.095 



.825 



.270 



69.5 



75.1 



65.8 



9.3 



8 



.988 



.110 



.846 



.264 



67.8 



73.2 



64.0 



9.2 



9 



30.001 



.127 



.858 



.269 



66.5 



72.6 



62.4 



10.2 



10 



.007 



.149 



.864 



.285 



65.5 



72.0 



61.2 



10.8 



11 



.002 



.144 



.865 



.279 



64.8 



71.6 



60.4 



11.2 



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

 Thermometers are derived from the observations made at the several hour 

 during the month. 



