Meteorological OLserva /'ions. 



lxxxix 



Abstract of the "Results of the Hourly Meteorological Observations 

 taken at the Surveyor General's Office, Calcutta } 

 • in the month of December 1866. 



Latitude 2a° :3:i' 1" North. Longitude 88° 20' 34" East. 



Heightof the Cistern of 1 lie Standard Barometer above the sea level, 18.11 feet. 



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

 dependent thereon. 







Range of the Barometer 





Flange of the Tempera- 





Hii* 



during the day,. 



pq 2 



>-. 3 



S 



ture during the day. 





2SiS 













Date. 

















Sj2 



Max. 



Min. 



Diff. 





Max. 



Min. 



Diff. 





a- 10 









*s 











Inches. 



Inches. 



Inelies. 



[nches. 



















1 



30.023 



30.072 



29.962 



0.110 



71.7 



82.0 



64.0 



18.0 



2 



.01 7 



.088 



.935 



.153 



71.8 



80.6 



64.6 



16.0 



3 



.014 



.loo 



.9 17 



.153 



69.8 



80.6 



61.4 



19.2 



4 



.011 



.065 



.9 11 



.124 



68.4 



78.0 



60.2 



17.8 



5 



29.9S5 



•062 



.911 



.151 



68.2 



78.0 



60.0 



18.0 



6 



.961 



.044 



.904 



.140 



67.0 



76.6 



60.6 



16.0 



7 



30.000 



.071 



.944 



.127 



66.9 



77.0 



57.6 



19.4 



8 



.071 



.159 



30.000 



.159 



Oo.S 



76.0 



57.0 



19.0 



9 



.071 



.131 



mi) 



.102 



65.4 



76.0 



56.8 



19.2 



10 



.104 



.173 



.05 1- 



.119 



67.1 



76.4 



59.0 



17.4 



11 



.130 



.185 



.085 



.100 



(57.9 



78.0 



60.0 



18.0 



12 



.113 



.195 



.045 



.150 



67.0 



76.8 



59.0 



17.8 



13 



.025 



.096 



29.955 



.141 



67.5 



77.0 



59.6 



17.4 



14 



.014 



.078 



.959 



.119 



68.0 



77.2 



60.6 



16.6 



15 



.065 



.122 



30.022 



.100 



67.2 



77.2 



58.7 



18.5 



16 



.136 



.208 



.087 



.121 



67.9 



77.5 



59.8 



17.7 



17 



.145 



.222 



.076 



.146 



m.7 



76.6 



58.8 



17.8 



18 



.144 



.217 



.088 



.129 



68.0 



77.2 



61.0 



16.2 



19 



.171 



.256 



.119 



.137 



67.5 



77.3 



58.4 



18.9 



20 



.195 



.273 



.121 



.152 



66.9 



76.6 



58.6 



18.0 



21 



.164 



.226 



.108 



.118 



67.1 



76.0 



58.8 



17.2 



22 



.164 



.233 



,117 



.115 



67.1 



76.0 



58.8 



17.2 



23 



.158 



.231 



.097 



.134 



66.5 



76.0 



58.2 



17.8 



24 



.170 



.254 



.124 



.130 



66.0 



75.6 



58.0 



17.6 



25 



.163 



.249 



.096 



.153 



65.3 



74.2 



57.4 



16.8 



26 



.119 



.186 



.050 



.136 



65.4 



75.8 



56.6 



19.2 



27 



.075 



.138 



.012 



.126 



65.4 



75.4 



56.0 



19.4 



28 



.088 



.159 



.035 



.124 



65.1 



75.4 



56.4 



19.0 



29 



.023 



.113 



29.952 



.161 



64.8 



75.8 



56.8 



19.0 



30 



29.960 



.033 



.890 



.143 



65.4 



77.4 



55.6 



21. S 



31 



,979 



.049 



.934 



.115 



67.1 



77.0 



58.0 



19.0 



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. 



