Meteorological Observations 



liv 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of July 1875. 



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



dependent thereon. 



Range of the Tempera- 

 ture for each hour 

 during the month. 



Hour. 



Mean Height of 



the Barometer at 



32° Faht. 



Range of the Barometer 



for each hour during 



the month. 



Mean Dry Bulb 

 Thermometer. 



Max. 



Min. 



Diff. 



Max. 



Min. 



Diff. 





Inches. In 



ches. 



Mid- 







night. 



29.524 2! 



3.718 



1 



.514 



.709 



2 



.502 



.696 



3 



.491 



.677 



4 



.485 



.670 



5 



.493 



.683 



6 



.506 



.705 



7 



.522 



.725 



8 



.536 



.740 



9 



.546 



.744 



10 



.547 



.742 



11 



.540 



.729 



Noon. 



.530 



.717 



1 



.512 



.713 



2 



.490 



.693 



3 



.472 



.680 



4 



.458 



.641 



5 



.455 



.633 



6 



.400 



.636 



7 



.485 



.653 



8 



.506 



.673 



9 



.526 



.695 



10 



.540 



.732 



11 



.538 



.726 



Inches. 



29.268 

 .274 

 .273 

 .266 

 .262 

 .274 

 .300 

 .331 

 .338 

 .353 

 .355 

 .358 



.330 

 .287 

 .276 

 .264 

 .260 

 .211 

 .210 

 .232 

 .299 

 .319 

 .317 

 .292 



Inches. 



0.450 

 .435 

 .423 

 .411 



.408 

 .409 

 .405 

 .394 

 .402 

 .391 

 .387 

 .371 



.387 

 .426 

 .417 

 .416 

 .381 

 .392 

 .426 

 .421 

 .374 

 -.376 

 .415 

 .434 



81.6 

 81.2 

 81.0 

 80.8 

 80.7 

 80.4 

 80.4 

 81.0 

 82.0 

 83.5 

 84,6 

 85,6 



86.1 



86.3' 



86.2 



86.4 



86.1 



85.5 



8 L i 



83.3 



82.8 



82.5 



82.2 



81.8 



84.5 

 84,2 

 84.0 

 84.0 

 84,0 

 84.0 

 83.6 

 84.5 

 86.2 

 88.5 

 89.5 

 89.3 



90.5 

 91.5 

 91.7 

 92.6 

 91.8 

 91.4 

 91.4 

 86.7 

 86.7 

 86.2 

 85.5 

 84-7 



78.5 

 78.0 

 77.7 

 77.5 

 '78.0 

 77.8 

 78.0 

 77.4 

 77.5 

 78.8 

 79.4 

 79.0 



80.0 

 79-4 

 78.0 

 78.5 

 78.7 

 79.0 

 79.3 

 78.6 

 79.0 

 7.85 

 78.5 

 78.5 



6.0 

 6.2 

 6.3 

 6.5 

 6.0 

 6.2 

 5.6 

 7.1 

 S.7 

 9.7 

 10.1 

 10.3 



10.5 



12.1 



13.7 



14.1 



13.1 



12.4 



12.1 



8.1 



7.7 



7.7 



7.0 



6.2 



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. 



