Meteorological Observations. 



xxv 



Abstract of the Besults of the Hourly Meteorological Observations 

 taken at the Surveyor General's Office, Calcutta, 

 in the month of September, 1859. 



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 

 dependent thereon. 





O <u 



Range 



of the Barometer 



j£ .J 



13 « 



pq cu 



Range of the Tempera- 





SiJ 



during the d 



j y- 





ture during the 



day. 





















Date. 



Max. 



Min. 



Diff. 



Max. 



Min. 



Diff. 





rt 









3 











Inches. 



Inches. 



Inches. 



Inches. 



o 



o 



o 



o 



1 



29.540 



29.589 



29.474 



0.115 



86.0 



90.8 



82.8 



8.0 



2 



.611 



.664 



.561 



.103 



83.9 



88.8 



81.6 



7.2 



3 



.598 



.652 



.526 



.126 



82.7 



88.0 



80.3 



7.7 



4 



Sunday. 

















5 



.583 



.643 



.510 



.133 



83.5 



87.6 



80.0 



7.6 



6 



.585 



.634 



.527 



.107 



84.9 



90.2 



80.6 



9.6 



7 



.603 



.655 



.551 



.104 



85.4 



90.6 



81.8 



8.8 



8 



.569 



.62S 



.512 



.116 



85.0 



89.8 



82.0 



7.8 



9 



.544 



.598 



.489 



.109 



83.6 



90.4 



80.1 



10.3 



10 



.593 



.666 



.527 



.139 



83.8 



90.0 



80.4 



9.6 



11 



Sunday. 

















12 



.702 



.783 



.653 



.130 



84.4 



89.2 



80.3 



8.9 



13 



.693 



.755 



.625 



.130 



86.3 



91.6 



81.4 



10.2 



14 



.656 



.712 



.589 



.123 



86.9 



92.0 



81.8 



10.2 



15 



.658 



.728 



.597 



.131 



83.1 



85.6 



77.6 



8.0 



16 



.669 



.716 



.621 



.095 



79.9 



83.4 



77.4 



6.0 



17 



.682 



.741 



.620 



.121 



82.0 



86.6 



78.6 



8.0 



18 



Sunday. 

















19 



.742 



.799 



.695 



.104 



82.0 



87.2 



80.0 



7.2 



20 



.781 



.843 



.724 



.119 



79.2 



82.1 



76.0 



6.1 



21 



.820 



.874 



.778 



.096 



81.0 



84.4 



79.0 



5.4 



22 



.829 



.896 



.775 



.121 



82.4 



87.0 



78.0 



9.0 



23 



.778 



.845 



.721 



.124 



83.3 



88.0 



79.4 



8.6 



24 



.745 



.799 



.683 



.116 



85.0 



90.0 



78.6 



11.4 



25 



Sunday. 

















28 



.852 



.936 



.790 



.140 



86.0 



91.8 



82.0 



9.8 



27 



.840 



.907 



.768 



.139 



83.1 



87.0 



81.4 



5.6 



28 



.819 



.871 



.753 



.118 



81.9 



88.8 



80.0 



8.8 



29 



.838 



.908 



.780 



.122 



82.4 



86.8 



79.2 



7.6 



30 



.864 



.938 



.800 



.138 



83.5 



90.2 



79.2 



11.0 



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

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

 the day. 



