Meteorological Observations. 



Ixvi 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the mouth of September 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 Hygrometrical elements 

 dependent thereon. 





"o o 



llange of the Bn 



•onieter 





llange of the Tempera- 







during the d 



ay. 





ture dm 



ing the day. 



Date. 

















^P-l-M 









s3 b 











S3 . CO 



Max. 



Min. 



DilF. 





Max. 



Min. 



Diff. 





Inches. 



Inches. 



Inches. 



Inches. 



O 



o 



o 



o 



1 



29.649 



29.710 



29.557 



0.153 



S4.7 



89.5 



80.5 



9.0 



2 



.611 



.680 



.541 



.139 



84.8 



91.0 



80.4 ' 



10.6 



3 



.629 



.681 



.579 



.102 



83.9 



87.6 



81.0 



6.6 



4 



.664 



.715 



.612 



.103 



81.9 



84.8 



80.2 



4.6 



5 



.685 



.740 



.626 



.114 



82.9 



87.3 



80.0 



7.3 



6 



.670 



.728 



.595 



.133 



84.0 



88.2 



81.4 



6.8 



7. 



.643 



.719 



.584 



.135 



84.2 



88.6 



80.0 



8.6 



8 



.639 



.688 



.574 



.114 



81.5 



83.4 



79.5 



3.9 



9 



.630 



.671 



.570 



.101 



82.4 



87.0 



80.0 



7.0 



10 



.653 



.718 



.590 



.128 



82.1 



86.8 



80.3 



6.5 



11 



.649 



.699 



.565 



.134 



81.5 



87.3 



79.4 



7.9 



12 



.678 



.748 



.610 



.138 



81.3 



87.2 



79.0 



8.2 



13 



.741 



.803 



.677 



.126 



82.4 



86.5 



79.0 



7.5 



14 



.753 



.824 



.661 



.163 



84.1 



89.3 



80.0 



9.3 



15 



.723 



.790 



.647 



.143 



85.0 



90.0 



81.0 



9.0 



18 



.683 



.749 



.604 



.145 



S4.5 



89.0 



80.9 



8.1 



17 



.670 



.724 



.593 



.13L 



84.7 



91.3 



81.2 



10.1 



18 



.683 



.745 



.611 



.134 



84.1 



88.8 



81.0 



7.8 



19 



.667 



.738 



.591 



.147 



84.1 



89.0 



80.5 



8.5 



20 



.660 



.705 



.612 



.093 



84.0 



90.0 



80.8 



9.2 



21 



.691 



.736 



.628 



.108 



84.2 



92.0 



80.0 



12.0 



22 



.697 



.765 



.633 



.132 



84.0 



90.4 



80.4 



10.0 



23 



.718 



.771 



.657 



.114 



81.2 



85.7 



78.0 



7.7 



24 



.726 



.799 



.660 



.139 



79.9 



81.6 



78.0 



3.6 



25 



.733 



.794 



.678 



.116 



80.3 



85.4 



78.5 



6.9 



26 



.727 



.782 



.664 



.118 



81.3 



85.5 



79.0 



6.5 



27 



.768 



.836 



.716 



.120 



83.3 



88.5 



79.0 



9.5 



28 



.760 



.820 



.701 



.119 



83.8 



89.2 



79.5 



9.7 



29 



.753 



.815 



.686 



.129 



84.0 



89.0 



80.7 



8.3 



30 



.783 



.841 



.706 



.135 



83.1 



89.0 



80.0 



9.0 



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

 Thermometer Means are derived, from the hourly obsei'vations, made during 

 the day. 



