Meteorological Observations. 



Ixxv 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor GeneraVs Office. Calcutta, 



in the month of October, 1864. 



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

 dependent thereon. 







Range 



of the Barometer 



*3 2 



Rang 



5 of the Te 



nperature 



Hour. 



£ * o 



for each hour during 

 the month. 



h o 

 c5 | 



for 



each hour during 

 the month. 





















Max. 



Min. 



Diff. 



5 jp 



Max. 



Min. 



Diff. 





S 









m 











Inches. 



Inches. 



Inches. 



Inches. 















o 



Mid- 

 night. 

 1 



29.874 



29.993 



29.712 



0.281 



78.0 



83.8 



72.2 



11.6 



.865 



.981 



.694 



.287 



77.6 



83.8 



72.4 



11.4 



2 



.853 



.971 



.656 



.315 



77.4 



83.4 



72.6 



10.8 



3 



.848 



.971 



.641 



.330 



76.7 



83.4 



72.2 



11.2 



4 



.846 



.972 



.616 



.356 



76.6 



83.0 



71.6 



11.4 



5 



.857 



.987 



.605 



.382 



76,7 



82.6 



70,6 



12.0 



6 



.874 



30.008 



.601 



.407 



76.2 



82.4 



69.1 



13 3 



7 



.893 



.025 



.588 



.437 



77.1 



83.8 



70.2 



13.6 



8 



.925 



.052 



.763 



.289 



79.5 



85.7 



70.4 



15.3 



9 



.924 



.062 



.554 



.508 



81.2 



87.4 



69.8 



17.6 



10 



.920 



.045 



.475 



.570 



82.6 



87.4 



70.3 



17.1 



11 



.896 



.027 



.333 



.694 



83.8 



89.0 



71.8 



17.2 



Moon. 



.865 



29.999 



.113 



.886 



84.3 



88.9 



72.5 



16.4 



1 



.832 



• .972 



28.850 



1.122 



84.7 



90.0 



72.4 



17.6 



2 



.801 



.953 



.681 



.272 



84.8 



90.8 



72.4 



18.4 



3 



.799 



.937 



.930 



.007 



85.0 



90.4 



72.4 



18.0 



4 



.801 



.935 



29.014 



0.921 



84.5 



90.6 



71.6 



19.0 



5 



.842 



.941 



,753 



.188 



83,4 



88.6 



71.4 



17.2 



6 



.840 



.954 



.539 



.415 



81.3 



86.8 



71.4 



15.4 



7 



.861 



,962 



.544 



.418 



80.2 



84.5 



71.4 



13.1 



8 



.882 



.977 



.622 



.355 



79,3 



82.6 



71.4 



11.2 



9 



.894 



.993 ' 



.686 



.307 



79.0 



82.6 



72.0 



10.6 



10 



.897 



.989 



.716 



.273 



78.5 



82.2 



72.2 



10.0 



11 



.890 



.979 



.719 



.260 



78.1 



82.2 



72.2 



10.0 



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

 mometer Means are derived from the Observations made at the several hours 

 daring the month. 



