Meteoro logica I Observa tions. 



lxvii 



Abstract of the Results of the Hourly Meteorological Observations 

 taken at the Surveyor General's Office, Calcutta, 

 in the month of September, 1857. 



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

 dependent thereon. 



Hour. 



Height of 

 Barometer 

 52° Faht. 



Ranee o 

 each 



:' the Barometer for 

 nour during the 

 month. 



5 •-" 

 3 53 



p a 



Range of the Tempera- 

 ture for each hour 

 during the 

 month. 

















CO ,2 -»-> 



Max. 



Min. 



Diff. 



CO r. 



Max. 



Min. 



Diff. 





S 







1 



S 











Inches. 



Inches. 



Inches. 



Inches. 



O 



o 



o 



o 



Mid- 

 night. 

 1 



29.719 



.707 



29.819 

 .803 



29.524 

 .511 



0.295 

 .292 



80.7 

 80.4 



84.2 

 83.6 



77.2 

 76.8 



7.0 

 6.8 



2 



.697 



.798 



.507 



.291 



80.2 



83.2 



76.8 



6.4 



3 



.687 



.785 



.491 



.294 



79.7 



83.0 



76.6 



6.4 



4 



.685 



.775 



.484 



.291 



79.7 



82.6 



76.0 



6.6 



5 



.696 



.787 



.478 



.309 



79.5 



82.4 



76.0 



6.4 



6 



.710 



.802 



.481 



.321 



79.5 



82.6 



75.6 



7.0 



7 



.729 



.822 



.500 



.322 



80.1 



82.8 



75.6 



7.2 



8 



.750 



.839 



.509 



.330 



81.9 



81,8 



77.3 



7.5 



9 



.759 



.845 



.490 



.355 



83.1 



86.4 



77.8 



8.6 



10 



.759 



.846 



.489 



.357 



83.8 



87.8 



76.8 



11.0 



11 



.745 



.848 



.456 



.392 



85.0 



89.0 



77.2 



11.8 



Noon. 



.726 



.833 



.445 



.388 



85.6 



90.1 



77.9 



12.2 



1 



.698 



.798 



.408 



.390 



86.2 



91.2 



78.0 



13.2 



2 



.671 



.797 



.374 



.423 



86.5 



91.6 



77.7 



13.9 



3 



.651 



.788 



.377 



.411 



86.0 



91.6 



77.2 



14.4 



4 



.644 



.763 



.388 



.375 



85.5 



90.8 



77.8 



13.0 



5 



.649 



.755 



.409 



.346 



84.2 



89.4 



77.2 



12.2 



6 



.663 



.755 



.447 



.308 



83.1 



87.8 



77.1 



10.7 



7 



.684 



.771 



.459 



.312 



82.2 



86.6 



76.6 



10.0 



8 



.711 



.789 



.483 



.306 



81.7 



85.2 



76.6 



8.6 



9 



.727 



.803 



.524 



.279 



81.5 



81,5 



78.1 



6.4 



10 



.734 



.813 



.528 



.285 



81.3 



83.8 



78.4 



5.4 



11 



.731 



.806 



.537 



.269 



81.0 



83.6 



78.4 



5.2 



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

 Thermometers are derived from the observation made at the several hours 

 during the month. 



