1870.] 



Observations in India. 



229 



Dehra. The two stations, it will be remembered, are about nine miles apart, 

 and situated nearly on a common meridian. 



(14) Collecting the results of observations, we obtain the following 

 from simultaneous groups only : — 



Table I. 







M * 



D * 



M — D. 







M. 



D. 



M-D. 





n m 



s 















h m s 









27th. 



11 49 



9 



in 



3 U 



1007 

 968 



876 



131 



3rd. 



11 14 30 



L 100 1 



J 



930 



7 1 





29 



3° 



941 



888 



53 





11 46 



45 



1 



\ 1013 



912 



IOI 

















j 







Mean 





972 



889 



83 





000 



1 c 

 j 



1006 

 101 c 



908 



Q2Q 

 y y 



98 

 86 



28th. 



1 1 40 



O 



955 



887 



68 

 86 





30 



1005 



924 



81 









O 



q6q 

 y y 



883 





O AC O 



1020 



937 



83 





21 



3° 



928 



884 



44 











































IOIO 



923 



87 



















Mean . 





95 1 



885 



66 









29th. 











4th. 



8 3 30 



847 



718 



129 



3 

 4 



30 

 30 



} 9S4 



J 



895 



89 





9 11 



IO O O 



943 

 996 



821 



070 



122 

 120 





21 



3° 



965 



907 



58 





II IO O 

 O II O 



| 1000 



909 



9 1 























Mean . 





975 



901 



74 





6 30 



986 



913 



73 



30th. 















1 8 



984 



892 



92 



11 40 

 1 





 30 



980 

 977 



912 



903 



68 

 74 





2 io 30 

 9 30 



j 9 6 4 



845 



119 





18 



30 



983 



919 



64 





3 9 3° 



911 



758 



153 

















4 9 3° 



775 



540 



235 





Mean . 







911 



69 















980 





Mean from 

 II h io m to 

 i h 8 m 



J 99° 



905 



85 



Collecting these average daily results for + 1 hour (about) from noon, 

 we have : — 



Table II. 





M. 



D. 



M-D. 



1869. Oct. 



27. 



972 



889 



83 





28. 



95i 



885 



66 





29. 



975 



901 



74 



Nov. 



30. 



980 



911 



69 



3- 



IOIO 



9 2 3 



87 





4- 



990 



905 



85 





980 



902 



77 



(15) In Tables I. and II. I have availed myself of none but actually si- 

 multaneous observations. We may, however, include every result at either 

 station, provided the curve at the other station exists for the required time. 

 * M stands for Mussoorie, D for Dehra. 



