Meteorological Observa tious. 



xvu 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of March 1866. 



Latitude 22° 23' 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 Hygrometrical elements 

 dependent thereon. 





o ^ 



Range of the Barometer 



""3 *h 



Range of the Tempera- 







during the day. 



PQ -2 



ture during the day. 



















Date. 























a ^ 











I *2 



Max. 



Min. 



Diff. 



M 



Max. 



Min. 



Diff. 













^ 











Inches. 



Inches. 



Inches. 



Inches. 











o 



o 



1 



29.789 



29.866 



29.74-0 



0.126 



81.4 



93.6 



72.8 



20.8 



2 



.821 



.898 



.748 



.150 



82.3 



92.8 



74.5 



18.3 



3 



.821 



.927 



.745 



.182 



81.4 



91.7 



72.4 



19.3- 



4 



.756 



.818 



.678 



.140 



81.8 



93.6 



72.0 



21.6. 



5 



.786 



.865 



.732 



.133 



82.4 



94.8 



72.4 



22.4 



6 



.816 



.892 



.757 



.135 



81.8 



94.0 



71.4 



22.6 



7 



.792 



.860 



.724 



.136 



82.6 



94.0 



75.4 



18.6, 



8 



.793 



.876 



.719 



.157 



83.4 



95.2 



72.5 



22.7 



9 



.800 



.872 



.732 



.140 



83.8 



95.0 



75.4 



19.6 



10 



.784 



.859 



.719 



.140 



83.4 



94.4 



76.7 



17.7 



11 



.858 



.937 



.775 



.162 



83.6 



92.4 



76.8 



15.6 



12 



.977 



30.060 



.900 



.160 



83.4 



92.4 



77.4 



15.0 



13 



.967 



.056 



.872 



.184 



83.3 



92.2 



77.8 



14.4 



14 



.845 



29.945 



.764 



.181 



86.4 



96.4 



77.9 



18.& 



15 



.828 



.924 



.761 



.163 



84.3 



94.0 



76.6 



17.4 



16 



.871 



.952 



.812 



.140 



84.5 



94.0 



79.0 



15.0 



17 



.885 



.970 



.822 



.148 



84.0 



94.4 



77.0 



17.4 



18 



.820 



.899 



.750 



.149 



83.4 



92.9 



77.0 



15.9 



19 



.798 



.869, 



.729 



.140 



84.5 



95.0 



77.6 



17.4 



20 



.842 



.921 



.779 



.142 



84.3 



94.0 



76.6 



17.4 



21 



.798 



.878 



.703 



.175 



85.5 



96.5 



76.8 



19.7 



22 



.717 



.803 



.619 



,184 



86.7 



98.6 



77.8 



20.8 



23 



.715 



.790 



.663 



.127 



86.4 



98.4 



77.8 



20.6 



24 



.751 



.838 



.684 



.154 



84.9 



95.3 



77.6 



17.7 



25 



.748 



.827 



.678 



.149 



86.4 



96.2 



81.0 



15.2 



26 



.700 



.769 



.626 



.143 



87.4 



97.4 



80.7 



16.7 



27 



.730 



.811 



.668 



.143 



86.1 



95.1 



79.5 



15.6 



28 



.812 



.914 



.743 



'.171 



84.9 



93.2 



76.0 



17.2 



29 



.859 



.960 



.771 



.189 



81.9 



91.6 



73.8 



17.8 



30 



.855 



.927 



.775 



.152 



81.0 



91.0 



72.4 



18.6 



31 



.806 



.887 



.739 



.148 



83.7 



93.0 



77.0 



16.0 



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

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

 the day. 



