ON THE MERIDIAN. 



9 



1. Measurement of the Base Line in the Cqimbetoor. 



This base has been measured with the same apparatus, and in the same 

 manner as the base near Bangalore; an account of which has been given 

 in the loth volume of the Asiatick Researches; the whole operation has 

 been conducted under my own immediate inspection,, 



Experiments made for comparing the Chains. 



PREVIOUS TO THE MEASUREMENT. | AFTER THE MEASUREMENT. 



1 Excess of } I 



Excess of 



1806 



the REMARKS. 



1806 



the 



REMARKS. 





Old Chain.! j 





Old Chain. 



i 





DIVISIONS. 



| j 





DIVISIONS. 





March 19th 



19 



■ 



April 19th 



28 





at 6 A. M. 



19 



' 



at 6 A. M. 



26 







17.5 



i 





27.75 







17.25 

 17.5 



1 





28.25 

 27 





I 6 P. M. 



18.5 



I 





25.5 



. 



1 



18 



The mean tempera-} 



23.25 



The mean tempera- 





20 

 19.25 



lure during these ex- 



1 



22.25 

 23.25 



ture during these ex- 



1 



18.5 



periments was 86.12 





"2-2.25 ,'periments i was 81.1 



I 



17 







23.25 



' 



18 







25.75 j 



■ 



17.5 



j 



20th j 



24 •; 



1 



17.5 



. 



Ut6A. M. 



24 



, 









24.75 



1 







1 



24.75 I 



j Mean) 18.18 |. || Mean 



25 . r 1 



c 



