Meteorological Observations. 



Ixxviii 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of October 1870. 



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



dependent thereon. 



Horn 



O tf 

 TV ^ "£ 



Iff 



C3 hH CO 



Hange of the Barometer 



for each hour during 



tlie month. 



Max. 



Min. 



Diff. 



pq 



CO 





H3 



> 



9 



u 



o 



p a 



g 



0) 



cr. 



r=i 



k— 1 



H 



r-n 





Eange of the Tempera- 

 ture for each, hour 

 during the month. 



Max. 



Min. 



Diff. 



Mid- 

 night. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 

 11 



Noon. 

 1 

 2 

 3 

 4 

 5 

 6 

 7 

 8 



10 

 11 



Inches. 



29.S31 

 .822 

 .8)5 

 .808 

 .806 

 .817 

 .834 

 .855 

 .875 

 .888 

 .885 

 .868 



.843 



.813 



.786 

 .772 

 .768 

 .775 

 .787 

 .806 

 .827 

 .840 

 .845 

 .842 



Inches. 



29 



.904 

 .893 

 .887 

 .883 

 .884 

 .904 

 .914 

 .929 

 .954 

 .968 

 .957 

 .939 



.912 

 .873 

 .854 

 .843 

 .839 

 .846 

 .861 

 .881 

 .891 

 .900 

 .913 

 .908 



Indies. 



29.736 

 .729 



.717 

 .708 

 .703 

 .718 

 .729 

 .745 

 .755 

 .78L 

 .787 



.752 

 .725 

 .684 



.6m 



.662 

 .677 

 .688 

 .704 

 .724 

 .733 

 .749 

 .747 



Inches. 



.168 

 .164 

 .170 

 .175 

 .181 

 .3 86 

 .185 

 .184 

 .199 

 .187 

 .170 

 .164 



.160 

 .148 

 .170 

 .177 

 .177 

 .169 

 .173 

 .177 

 .167 

 .167 

 .164 

 .161 



80.4 

 80.0 

 79-8 

 79.5 

 79.3 

 79.1 

 79.0 

 79.9 

 81.4 

 82.9 

 84.2 

 85.2 



86.1 

 86.6 

 87.2 

 86.8 

 86.0 

 84.9 

 83.3 

 82.3 

 81.8 

 81.3 

 80.9 

 80.6 



82.7 

 82.6 

 82.5 

 82.4 

 82.2 

 82.5 

 82.4 

 83.0 

 85.1 

 86.0 

 87.6 

 89.6 



90.6 

 91.2 

 91.6 

 91.6 

 90.0 

 89.2 

 87.2 

 86.3 

 85.0 

 84.0 

 83.5 

 83.0 



76.3 

 75.6 



75.0 



75.0 

 75.0 

 75.5 

 75.5 

 75.5 

 75.5 

 76.0 

 76.5 

 76.0 



77.0 

 76.5 

 77.0 

 78.0 

 78.0 

 76-0 

 76.3 

 76.5 

 76.8 

 77.0 

 77.0 

 76.7 



6.4 



7 



7.5 



7.4 



7.2 



7.0 



6.9 



7.5 



9.6 



10.0 



11.1 



13.6 



13.6 



14.7 



14.6 



13.6 



12.0 



13.2 



10.9 



9.8 



8.2 



7.0 



6.5 



6.3 



The Mean Height of the Barometer, as likewise the Dry and Wet l)u ] h 

 Thermometer Means are derived from the observations made at the several 

 hours during the month. 



