Meteorological Observations. 



Ix 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of August 1868. 



Latitude U° 33' 1" North. Longitude 88° 20' 34" East. 



Height of the Cistern of the Standard Barometer above the sea level, 18.11 feet. 



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

 dependent thereon. 



Date. 



1 

 2 

 3 



4 

 5 

 6 

 7 

 8 

 9 

 10 

 11 

 12 

 13 

 14 

 15 

 1G 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 31 



o f-> 



.tfg'S 



W rgo 



Range of the Barometer 

 during the day. 



Max. 



Min. Diff. 



A § 



a 1 



Range of the Tempera- 

 ture during the day. 



Inches. 



Inches. 



Inches. 



29.590 



29.635 



29.520 



.604 



.661 



.543 



.580 



.631 



.494 



.544 



.595 



.478 



.511 



.557 



.402 



.462 



.511 



.395 



.487 



.516 



.430 



.542 



.588 



.498 



.527 



.576 



.470 



.515 



.565 



.447 



.488 



.541 



.401 



.467 



.527 



.426 



.435 



.502 



.392 



.496 



.549 



.453 



.521 



.575 



.475 



.512 



.559 



.441 



.518 



.565 



.451 



.600 



.676 



.534 



.646 



.701 



.590 



.599 



.637 



.540 



.576 



.615 



.537 



.580 



.631 



.543 



.627 



.691 



.574 



.649 



.710 



.596 



.669 



.750 



.624 



.678 



.738 



.611 



.676 



.728 



.616 



.714 



.766 



.653 



.758 



.815 



.707 



.785 



.829 



.717 



.818 



.879 



.777 



Inches. 



0.115 

 .118 

 .137 

 .117 

 .095 

 .116 

 .116 

 .090 

 .106 

 .118 

 .140 

 .101 

 .110 

 .096 

 .100 

 .118 

 .111 

 .142 

 .111 

 .097 

 .078 

 .088 

 .117 

 .114 

 .126 

 .127 

 .112 

 .113 

 .108 

 .112 

 .102 



86.3 



82.3 

 85.5 

 85.9 

 85.8 

 83.6 

 82.9 

 80.6 

 83.3 

 86.4 

 82.2 

 78.6 

 79.2 

 79.2 

 80.2 

 82.6 

 80.1 

 81.8 

 84.7 

 85.0 

 84.3 

 86.6 

 85.8 

 85.8 

 83.5 

 83.1 

 84.1 

 84.1 

 82.7 

 83.7 

 83.5 



Max. 



Min. 



Diff. 



o 







91.0 



82.0 



85.0 



78.0 



91.0 



80.5 



90.2 



82.6 



92.4 



80.7 



87.0 



81.5 



86.8 



80.4 



82.5 



79.7 



91.3 



79.8 



91.5 



81.9 



88.4 



75.5 



81.2 



77.0 



80.5 



77.5 



82.4 



76.5 



82.0 



79.2 



86.0 



79.2 



82.0 



78.8 



84.6 



79.5 



89.4 



79.8 



89.5 



80.5 



89.5 



79.8 



91.8 



82.9 



91.6 



82.2 



90.1 



82.5 



85.5 



78.8 



88.4 



79.0 



88.0 



79.5 



89.5 



81.1 



87.5 



80.0 



90.5 



79.0 



88.0 



80.0 



9.0 

 7.0 



10.5 

 7.6 



11.7 

 5.5 

 6.4 

 2.8 



11.5 

 9.6 



12.9 

 4.2 

 3.0 

 5.9 

 2.8 

 6.8 

 3.2 

 5.1 

 9.6 

 9.0 

 9.7 

 8.9 

 9.4 

 7.6 

 6.7 

 9.4 

 8.5 

 8.4 

 7.5 



11.5 

 8.0 



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

 Thermometer Means are derived, from the hourly observations, made during 

 the day, a 



