/W 





Meteorological Observation 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the -month of April 1869. 



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



Height of the Cistern of the Standard Barometer above the sea level, 18.11 feet. 



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

 dependent thereon. 





=3 g 



Range c 



f the Barometer 



3 gj 



Range of the Tempera- 







dm 



ing the day. 



Gj 



ture dui 



ing the day. 





4) £ pq 



WrSo 









a a 







Date. 















^P-ifM 









S3 £l 









| 4, CO 



Max. 



Min. 



Diff. 



gj 



Max. 



Miii. Diff. 





1^^ ta 



r=3 









%^ 





' ' I 





Inches. 



Inches. 



Inches. 



Inches. 



o 



o 



I 

 o o 



1 



29.888 



29.968 



29.821 



0.147 



85.7 



95.5 



77.5 18.0 



2 



.845 



.942 



.762 



.180 



85.8 



95.5 



79.0 16.5 



3 



.805 



.875 



.753 



.122 



86.6 



96.8 



77.5 



19.3 



4 



.836 



.910 



.787 



.123 



86.7 



96.5 



77.9 



18.6 



5 



.828 



.924 



.745 



.179 



87.1 



98.0 



76.6 



2.1.4 



6 



.746 



.836 



.655 



.181 



88.2 



99.5 



79.0 



20.5 



7 



.710 



.806 



.625 



.181 



87.1 



95.5 



80.1 



15.4 



8 



.680 



.743 



.607 



.138 



87.2 



98.1 



79.0 



19.1 



• 9 



.703 



.766 



.656 



.110 



85.6 



93.0 



80.0 



13.0 



• 10 



.792 



.909 



.701 



.208 



84,8 



92.5 



79.5 



13.0 



11 



.819 



.914 



.756 



.158 



84.9 



95.2 



79.0 



16.2 



12 



.816 



.891 



.750 



.141 



85.4 



95.4 



77.5 



17.9 



13 



.786 



.850 



.711 



.139 



85.6 



93.8 



79.5 



14.3 



14 



.724 



.797 



.641 



.156 



85.3 



92.0 



80.8 



11.2 



15 



.673 



.767 



.566 



.201 



85.6 



91.0 



82.6 



8.4 



16 



.664 



- .742 



.530 



.212 



83.6 



91.8 



75.0 



16.8 



17 



.677 



.734 



.630 



.104 



87.3 



96.3 



81.5 



14.8 



18 



.714 



.782 



.643 



.139 



87.7 



95.6 



82.5 



13.1 



19 



.730 



.799 



.655 



.144 



86.2 



91.5 



80.6 



10.9 



20 



.769 



.830 



.718 



.112 



86.2 



92.2 



82.0 



10.2 



21 



.814 



.884 



.743 



.141 



86.5 



93.3 



81.5 



11.8 



22 



.796 



.877 



.681 



.196 



86.6 



93.3 



81.7 



11.6 



23 



.704 



.771 



.608 



.163 



87.2 



94.8 



81.5 



13.3 



24 



.664 



.739 



.578 



.161 



87.3 



95.4 



81.4 



14.0 



25 



.722 



.851 



.652 



.199 



87.1 



94.0 



76-5 



17.5 



26 



.762 



.820 



.704 



.116 



86.7 



96.4 



77.0 



1&4 



27 



.744 



.814 



.660 



.154 



87.6 



97.5 



81.7 



15.8 



' 28 



.725 



.805 



.659 



.146 



87.1 



98.5 



79.0 



19.5 



29 



.751 



.812 



.677 



.135 



87.7 



97.5 



80.5 



17.0 



30 



.796 



.860 



.725 



.135 



88.5 



98.2 



80.3 



17.9 



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

 Thermometer Means are derived, from the hourly observations, made during 

 Hie day. 



