Meteorological Observations. 



XXV 



Abstract of the Results of the Hourly Meteorological Olservations 

 taken at the Surveyor General's Office, Calcutta, 

 in the month of April 1868. 



Latitude 22° 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. 



si-s 



1 



2 

 3 



4 

 5 

 6 

 7 

 8 

 9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 



Inches, 



29.928 

 .898 

 .846 

 .869 

 .920 

 .897 

 .842 

 .796 

 .776 

 .765 

 .746 

 .737 

 .742 

 .740 

 .781 

 .784 

 .801 

 .762 

 .714 

 .684 

 .683 

 .650 

 .736 

 .798 

 .810 

 .783 

 .733 

 .663 

 .639 

 .706 



Range of the Barometer 

 during the day. 



Max. 



Min. 



Inches. 



30.016 

 29.983 

 .917 

 .949 

 .980 

 .976 

 .907 

 .856 

 .845 

 .814 

 .824 

 .803 

 .797 

 .808 

 .849 

 .937 

 .870 

 .833 

 .784 

 .750 

 .783 

 .707 

 .818 

 .854 

 .847 

 .862 

 .812 

 .724 

 .689 

 .790 



Inches. 



29.861 

 .823 

 .773 

 .802 

 .841 

 .803 

 .741 

 .712 

 .686 

 .674 

 .652 

 .644 

 .684 

 .671 

 .721 

 .664 

 .733 

 .696 

 .632 

 .615 

 .608 

 .569 

 .681 

 .693 

 .749 

 .700 

 .656 

 .571 

 .578 

 .646 



Diff. 



Inches. 



0.155 

 .160 

 .144 

 .147 

 .139 

 .173 

 .166 

 .144 

 .159 

 .140 

 .172 

 .159 

 .113 

 .137 

 .128 

 .273 

 .137 

 .137 

 .152 

 .135 

 .175 

 .138 

 .137 

 .161 

 •098 

 .162 

 .156 

 .153 

 .111 

 .144 



■ 8 



84.7 



85.2 



85.3 



85.2 



73.1 



77.6 



81.4 



82.1 



83.0 



83.2 



82.9 



81.4 



82.3 



83.6 



84.2 



82.4 



81.0 



83.5 



85.4 



86.3 



87.3 



88.0 



87.3 



82.6 



73.3 



76.6 



82.6 



85.3 



88.3 



88.7 



Bange of the Tempera- 

 ture during the day. 



Max. 



Min. 



Diff. 



94.8 

 95.2 

 95.4 

 97.5 



78.5 



89.8 



90.5 



90.0 



93.0 



91.0 



91.0 



92.0 



90.4 



90.0 



90.6 



90.4 



90.5 



93.4 



94.0 



94.5 



98.0 



97.8 



96.0 



93.5 



86.7 



84.5 



91.0 



91.5 



97.4 



98.5 



76.5 



76.8 



76.0 



76.5 



67.5 



67.5 



74.0 



75.5 



77.0 



77.0 



74.0 



75.0 



75.0 



79.0 



78.6 



70.4 



71.4 



75.6 



79.0 



80.5 



80.5 



80.0 



80.9 



73.0 



68.7 



68.4 



75.0 



80.0 



82.5 



81.5 



18.3 



18.4 



19.4 



21.0 



11.0 



22.3 



16.5 



14.5 



16.0 



14.0 



17.0 



17.0 



15.4 



11.0 



12.0 



20.0 



19.1 



17.8 



15.0 



14.0 



17.5 



17.8 



15.1 



20.5 



18.0 



16.1 



16.0 



11.5 



14,9 



17.0 



The Mean Height of the Barometer, as likewise the Dr7a!ndWe7BuTb 

 t t r d ;° meter McanS are de ^ ed > fc>* ^e hourly observations, made durbg 



