Meteorological Observafu 



xeiv 



Abstract of the Remits of the Hourly Meteorological Observation, 

 taken at the Surveyor General's Office, Calcutta, 

 in the mouth of December 1870. 



Hourly Means, *,. of the Observations and of the ffygrometrical elements 

 dependent thereon. 



Hon 







Uange of the Barometer 



for each hour during 



the month. 



Max. Min. Diff. 



Inch 



Mid- 





night. 



30.029 



1 



.021 



2 



.013 



3 



.006 



4 



.001 



6 



.011 



6 



.026 



7 



.050 



8 



.075 



9 



.096 



10 



.099 



" 



.081 



Noon, 

 1 

 2 

 3 

 4 



6 



7 



8 



9 

 10 

 11 



.050 

 .015 



29.992 

 .978 

 .973 

 .979 

 .989 



30.008 

 .025 

 .037 

 .040 

 .031 



Inches. 



30.108 

 .095 

 .088 

 .081 

 .074 

 .091 

 .106 

 .124 

 .164 

 .181 

 .184 

 .170 



.136 

 .100 

 .063 

 .051 

 .048 

 .057 

 .062 

 .088 

 .100 

 .110 

 ,120 

 ,119 



29.864 

 .858 

 .855 

 .848 

 .823 

 .834 

 .842 

 .853 

 .884 

 .906 

 .919 

 .894 



.859 

 .825 

 .803 

 .789 

 .790 

 .796 

 .807 

 .829 

 .845 

 .869 

 .876 

 .867 



Inches. 



0.244 

 .237 

 .233 

 .233 

 .251 

 .257 

 .264 

 .271 

 .280 

 .275 

 .265 

 .276 



.277 

 .275 

 .260 

 .262 

 .258 

 .261 

 .255 

 .259 

 .255 

 .241 

 .244 

 .252 



b a 



IS 



62.8 

 62.1 

 61-5 

 60.9 

 60.3 

 59.8 

 59.3 

 59.2 

 61.7 

 64.8 

 6S.5 

 71.3 



74.5 

 75.4 

 75.5 

 74.2 

 72.7 

 69.8 

 67.8 

 66.5 

 65.3 

 64.3 

 63.5 



Range of the Tempera- 

 ture Coy eaeii hour 

 during the month. 



Max. 



66.0 

 65.2 

 65.0 

 64.0 

 64,0 

 63.5 

 62.8 

 63.0 

 65.0 

 69.4 

 73.2 

 75.5 



77.1 



78.5 

 79.5 

 80.1 

 79.5 

 78.0 

 74.0 

 71.5 

 70.5 

 69.2 

 68.0 

 66.5 



Min. ; Dim 



60.2 

 59.5 

 59.0 

 59.0 

 58.3 

 57.4 

 57.0 

 57.0 

 58.5 

 60.8 

 64.0 

 66.7 



69.0 

 69.8 

 71.6 

 72.4 

 70.7 

 697 

 67.4 

 65.8 

 64.5 

 63.0 

 62.0 

 61.2 



5.8 

 57 

 6.0 

 5.0 

 5.7 

 6.1 

 5.8 

 6.0 

 6.5 

 8.6 

 9.2 

 8.8- 



8.1 

 8.7 

 7.9 

 7.7 

 8.8 

 8.3 

 6.6 

 5.7 

 6.0 

 6.2 

 6.0 

 5.3 



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. 



