Meteorolog ica I Observa tions . 



Lxxv 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor GeneraVs Office, Calcutta, 



in the month of October 1866. 



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

 dependent thereon. 





O o3 



Kange c 



>f the Barometer 



"3 ti 



Eange of the Tempera- 





+3 U 



81* 



for each hour during 





ture for each hour 





the month 







 p a 



during the month. 



Hour. 

















ejW CO 



Max. 



Min. 



Diff. 



|j 



Max. 



Min. 



Diff. 





w2 « 









&* 











Inches. 



Inches. 



Inches. 



Inches. 



















Mid- 



















night. 



29.842 



29.953 



29.560 



0.393 



79.8 



84.4 



75.2 



9.2 



1 



.834 



.949 



.534 



.415 



79.5 



84.2 



74.6 



9.6 



2 



.826 



.94-6 



.522 



.424 



79.2 



83.8 



74.0 



9.8 



3 



.819 



.939 



.421 



.408 



78.9 



84.0 



73.0 



11.0 



4 



.817 



.936 



.514 



.422 



78.7 



83.8 



72.7 



11.1 



6 



.830 



.954 



.523 



.431 



78.5 



83.6 



72.4 



11.2 



6 



.846 



.970 



.533 



.437 



78.3 



83.0 



71.9 



11.1 



7 



.861 



.987 



.562 



.425 



79.1 



83.8 



72.6 



11.2 



8 



.881 



30.001 



.596 



.405 



80.9 



86.8 



73.8 



13.0 



9 



.891 



.004 



.627 



.377 



82.7 



87.8 



74.6 



13.2 



10 



.895 



.004 



,648 



.356 



84.0 



90.4 



76.0 



14.4 



11 



.880 



29.998 



.645 



.353 



85.1 



91.0 



75.8 



15.2 



Noon. 



.856 



.965 



.631 



.334 



85.6 



91.2 



76.2 



15.0 



1 



.825 



.937 



.621 



.316 



86.3 



91.4 



76.8 



14.6 



2 



.800 



.921 



.606 



.315 



86.8 



92.2 



75.8 



16.4 



3 



.785 



.911 



.577 



.334 



86.4 



91.2 



74.8 



16.4 



4 



.787 



.904 



.577 



.327 



84.7 



90.4 



74.9 



15.5 



5 



.791 



.913 



.573 



.340 



84.2 



90.4 



75.1 



15.3 



6 



.804 



.923 



.571 



.352 



82.5 



88.0 



75.1 



12.9 



7 



.821 



.935 



.566 



.369 



81.7 



86.6 



76.8 



9.8 



8 



.842 



.945 



.590 



.355 



81.1 



86.0 



76.2 



9.8 



9 



.856 



.954 



.597 



.357 



80.6 



85.3 



75.4 



9.9 



10 



.862 



.961 



.588 



.373 



80.2 



85.2 



75.0 



10.2 



11 



.855 



1 



i 



.958 



.576 



.382 



79.8 



85.0 



74.7 



10.3 



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

 Thermometer Means are derived from the observations made at the several 

 hours during the month. 



