Meteorological Observations. 



xlii 



Abstract of the Results of tlie Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of July, 1857. 



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. 













•° £ 











*» "£ jj 



Range 



of the Barometer 



a £ 



Range of the Tempera- 







during the day. 





ture during the 



day. 





= ffl^ 









o g 

























ean 

 the 



at c 



Max. 



Min. 



Diff. 





Max. 



Min. 



Diff. 



Q 



% 









s 











Inches. 



Inches. 



Inches. 



Inches. 



o 



o 











1 



29.422 



29.464 



29.373 



0.091 



79.7 



81.8 



77.8 



4.0 



2 



.413 



.466 



.372 



.094 



81.8 



85.9 



78.6 



7.3 



3 



.425 



.462 



.373 



.089 



81.6 



85.2 



79.2 



6.0 



4 



.409 



.449 



.351 



.098 



82.4 



86.0 



79.5 



6.5 



5 



Sunday. 

















6 



.381 



.426 



.328 



.098 



81.3 



84.8 



79.3 



5.5 



7 



.466 



.544 



.396 



.148 



81.7 



85.3 



78.8 



6.5 



8 



.543 



.595 



.501 



.094 



83.1 



87.2 



79.4 



7.8 



9 



.563 



.598 



.499 



.099 



83.7 



87.2 



80.4 



6.8 



10 



.528 



.575 



.478 



.097 



84.1 



90.0 



81.2 



8.8 



11 



.516 



.560 



.444 



.116 



82.0 



84.2 



80.2 



4.0 



12 



Sunday. 

















13 



.515 



.559 



.465 



.094 



84.7 



90.0 



81.2 



8.8 



14 



.514 



.551 



.450 



.101 



83.9 



89.4 



80.0 



9.4 



15 



.476 



.530 



.412 



.118 



84.3 



88.9 



81.0 



7.9 



16 



.476 



.521 



.423 



.098 



82.9 



84.8 



81.4 



3.4 



17 



.500 



.556 



.454 



.102 



82.5 



85.9 



79.6 



6.3 



18 



.531 



.598 



.477 



.121 



82.2 



85.6 



80.0 



5.6 



19 



Sunday. 

















20 



.584 



.628 



.541 



.087 



82.3 



85.3 



80.6 



4.7 



21 



.575 



.626 



.512 



.114 



81.7 



84.0 



79.6 



4.4 



22 



.594 



.645 



.543 



.102 



80.6 



86.6 



77.2 



9.4 



23 



.642 



.684 



.597 



.087 



79.5 



81.6 



77.4 



4.2 



24 



.678 



.732 



.636 



.096 



81.3 



87.5 



78.2 



9.3 



25 



.663 



.714 



.582 



.132 



82.9 



88.9 



79.0 



9.9 



26 



Sunday. 

















27 



.674 



.742 



.608 



.134 



81.7 



86.5 



78.6 



7.9 



28 



.709 



.756 



.654 



.102 



82.1 



88.4 



78.7 



9.7 



29 



.692 



.748 



.605 



.143 



81.8 



85.9 



78.8 



7.1 



30 



.643 



.691 



.558 



.133 



82.0 



87.5 



78.8 



8.7 



31 



.635 



.674 



.576 



.098 



81.5 



| 85.5 



79.0 



6.5 



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 

 the day. 



