Meteorological Observations. 



lxxi 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of October 1875. 



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



Height of the Cistern of the Standard Barometer above the sea level, ]8.1 1 feet. 



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



dependent thereon. 



Date. 



1 *" 







o 









~ 























"3 



o 



c3 



W 



KJ 







■M 



<w 



d 



a> 



co 



<o 



^ 



+3 



a 







Range of the Barometer 

 during the day. 



Max. 



Min. 



Diff. 



42 



"d ^ 



Range of the Tempera- 

 ture during the day. 



Max. 



Mi 



Diff. 



1 

 2 

 3 



4 

 5 

 6 

 7 

 8 

 9 



10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 31 



Inches. 



Inches. 



Inches. 



29.683 



29.729 



29.637 . 



.708 



.751 



.661 



.740 



.785 



.685 



.766 



.822 



.712 



.763 



.815 



.707 



.784 



.842 



.740 



.816 



.876 



.763 



.816 



.870 



.752 



.836 



.896 



.791 



.885 



.942 



.835 



.896 



.961 



.850 



.816 



.890 



.746 



.780 



.833 



.728 



.826 



.881 



.786 



.866 



.931 



.818 



.850 



.920 



.814 



.843 



.899 



.790 



.843 



.896 



.782 



.820 



.876 



.766 



.854 



.910 



.803 



.910 



.976 



.855 



.902 



.961 



.845 



.892 



.953 



.844 



.881 



.961 



.811 



.858 



.930 



.785 



.864 



.937 



.804 



.866 



.944 



.804 



.844 



.928 



.796 



.824 



.905 



.776 



.848 



.931 



.797 



.866 



.917 



.816 



Inches. 



0.092 

 .090 

 .100 

 .110 

 .108 

 .102 

 .113 

 .118 

 .105 

 .107 

 .111 

 .144 

 .105 

 .095 

 .113 

 .106 

 .109 

 .114 

 .110 

 .107 

 .121 

 .116 

 .109 

 .150 

 .145 

 .133 

 .140 

 .133 

 .129 

 .134 

 .131 



86.5 

 84,8 

 85.4 

 84,6 

 83.8 

 83.9 

 83.4 

 83.6 

 83.0 

 81.2 

 79.2 

 79.3 

 81.2 

 81.7 

 79.6 

 76.0 

 79:5 

 82.3 

 82.0 

 81.2 

 82.1 

 79.8 

 74.8 

 77.1 

 79.8 

 79.8 

 80.9 

 81.1 

 81.2 

 80.8 

 79.2 



91.8 

 90.0 

 91.5 



88.0 

 88.0 

 89.2 

 89.6 

 89.0 

 89.3 

 86.5 

 86.2 

 85.6 

 87.4 

 88.5 

 84.5 

 77.8 

 86.5 

 88.9 

 86.5 

 88.0 

 87.4 

 84.5 

 77.5 

 82.5 

 85.5 

 86.4 

 87.6 

 87.5 

 87.5 

 87.7 

 86.1 



82.2 

 81.8 

 79.5 

 81.0 

 81.0 

 79.5 

 77.0 

 78.7 

 77.5 

 75.5 

 ■73.0 

 73.0 

 76.0 

 74.5 

 76.5 

 74,7 

 75.0 

 77.0 

 78.5 

 78.2 

 79.0 

 77.9 

 73.0 

 73.0 

 74.8 

 73.5 

 75.0 i 

 74.3 

 76.5 

 75.0 

 73.0 



9.6 



8.2 



12.0 



7.0 



7.0 



9.7 



12.6 



10.3 



11.8 



11.0 



13.2 



12.6 



11.4 



14.0 



8.0 



3.1 



11.5 



11.9 



8.0 



9.8 



8.4 



6.6 



4.5 



9.5 



10.7 



12.9 



12.6 



13.2 



11.0 



12.7 



13.1 



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

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

 several hours during the day. 



