Meteorological Observations. 



1XT 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of September 1866. 



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 f-< 



Range of the Barometer 



J1 3j 



Range 



of Tempera- 





~j w -t-a 

 6£' C *9 



during tbe day. 



n| 



ture during the day. 





• >- 53 eo 

 W rgo 















Date. 















- "-M 









C *-> 









S - CO 



Max. 



Min. 



Diff. 



b3 2 



Max. 



Min. ! Diflf. 





a*" 









£ S 









Inches. 



Incbes. 



Inches. 



Inches. 



















1 



29.669 



29.730 



29.582 



0.148 



87.0 



93.2 



82.2 



11.0 



2 



.646 



.715 



.576 



.139 



86.8 



93.0 



82.2 



10.8 



3 



.51)8 



.669 



.517 



.152 



86.5 



92.0 



82.0 



10.0 



4 



.570 



.627 



.494 



.133 



83.1 



87.2 



80.0 



7.2 



5 



.612 



•683 



.550 



.133 



83.3 



89.4 



79.9 



9.5 



6 



.(H>o 



.726 



.615 



.111 



83.9 



88.4 



80.6 



7.8 



7 



.667 



.726 



.584 



.142 



85.7 



90.2 



81.6 



8.6 



8 



.571 



.652 



.473 



.179 



83.5 



89.0 



79.6 



9.4 



9 



.498 



.555 



.444 



.111 



80.8 



82.8 



79.0 



3.8 



10 



.548 



.607 



.504 



.103 



83.3 



87.3 



80.2 



7.1 



11 



.626 



.687 



.569 



.118 



83.2 



87.0 



80.6 



6.4 



12 



.615 



.672 



.534 



.138 



84.2 



90.1 



80.5 



9.6 



13 



.638 



.691 



.586 



.105 



84.9 



91.8 



81.8 



10.0 



14 



.642 



.694 



.575 



.119 



84.8 



88.0 



81.8 



6.2 



15 



.579 



.618 



.515 



.103 



85.8 



91.6 



81.8 



9.8 



16 



.579 



.622 



.511 



.111 



84,5 



92.8 



80.2 



12.6 



17 



.599 



.645 



.523 



.122 



82.9 



86.2 



80.2 



6.0 



18 



.643 



.724 



.576 



!l48 



82.9 



86.8 



79.8 



7.0 



19 



.730 



.786 



.674 



.112 



83.2 



89.0 



80.6 



8.4 



20 



.741 



.797 



.681 



.116 



82.5 



87.6 



80.4 



7.2 



21 



.712 



.762 



.645 



.117 



82.6 



87.5 



79.0 



8.5 



22 



.763 



.812 



.713 



.099 



84.1 



89.8 



79.6 



10.2 



23 



.802 



.855 



.746 



.109 



85.1 



90.8 



80.2 



10.6 



24 



.773 



.834 



.698 



.136 



84.1 



89.0 



79.0 



10.0 



25 



.729 



.776 



.657 



.119 



82.2 



84.0 



79.2 



4.8 



26 



.731 



.782 



.652 



.130 



83.9 



90.0 



78.0 



12.0 



27 



.767 



.842 



.688 



.154 



85.4 



91.2 



80.8 



10.4 



28 



.752 



.811 



.676 



.135 



86.2 



91.4 



82.2 



9.2 



29 



.751 



.803 



.676 



.127 



86.5 



93.2 



81.4 



11.8 



30 



.760 



.831 



.677 



.154 



86.5 



93.6 



81.8 



11.8 



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

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

 the day. 



