Meteor o log ica I Observations . 



xxv 



Abstract of tlie Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of April, 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 &> 



Range 



af the Barometer 



W 2 



Range of the Tern 



pera- 





.5Po£ 



during the d* 



•y- 



frl 



ture du 



•ing the 



day. 





^ M CM 

















Date. 

















csj" 









g -a 











35 - ±2 



Max. 



Min. 



Diff. 



________ 





Max. 



Min. 



Diff. 





Inches. 



Inches. 



Inches. 



Inches. 



o 



o 



o 



o 



1 



29.987 



30.060 



29.902 



0.158 



84.5 



92.8 



76.6 



16.2 



2 



.956 



.027 



.867 



.160 



84.9 



95.4 



77.0 



18.4 



3 



Sunday. 

















4 



.846 



29.921 



.787 



.134 



85.1 



96.4 



78.4 



18.0 



5 



.837 



.894 



.762 



.132 



85.1 



94.2 



77.9 



16.3 



6 



.814 



.890 



.737 



.153 



84.2 



92.8 



76.6 



16.2 



7 



.802 



.874 



.722 



.152 



85.1 



92.2 



78.8 



13.4 



8 



.799 



.859 



.712 



.147 



84.8 



92.6 



79.2 



13.4 



9 



.814 



.879 



.741 



.138 



81.7 



90.6 



74.2 



16.4 



10 



Sunday. 

















11 



.868 



.965 



.799 



.166 



78.7 



87.0 



68.9 



18.1 



12 



.833 



.922 



.739 



.183 



79.2 



89.6 



74.0 



15.6 



13 



.816 



.886 



.752 



.134 



80.9 



90.4 



73.0 



17.4 



14 



.822 



.909 



.745 



.164 



81.8 



92.6 



74.6 



18.0 



15 



.848 



.926 



.778 



.148 



81.2 



90.2 



73.6 



16.6 



16 



.827 



.902 



.758 



.144 



84.8 



94.8 



76.2 



18.6 



17 



Sunday. 

















18 



.746 



.840 



.683 



.157 



83.4 



91.8 



76.2 



15.6 



19 



.762 



.836 



.697 



.139 



84.9 



94.0 



78.8 



15.2 



20 



.759 



.816 



.686 



.130 



86.3 



95.4 



79.8 



15.6 



21 



.740 



.812 



.658 



.154 



87.2 



96.4 



79.8 



16.6 



22 



.724 



.794 



.647 



.147 



87.2 



98.0 



79.5 



18.5 



23 



.731 



.797 



.666 



.131 



86.4 



96.0 



79.2 



16.8 



24 



Sunday. 

















25 



.715 



.790 



.632 



.153 



86.6 



93.8 



80.8 



13.0 



26 



.754 



.806 



.672 



.134 



85.5 



928 



76.4 



16.4 



27 



.795 



.870 



.725 



.145 



85.7 



94. t 



75.6 



18.8 



28 



.830 



.892 



.748 



.144 



86.3 



95.8 



80.1 



15.7 



29 



.809 



.890 



.716 



.174 



87.1 



95.6 



79.6 



16.0 



30 



.795 



.878 



.701 



.177 



88.2 



97.2 



79.9 



1 



17.3 



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 



he day 



