MERIDIAN ON THE COAST OF COROMANDEL. l65 



North end of the Base from Perumbauk HilUo97^,^' 



No. 



Stations. 



Xorth end of the 



base, 

 Ptrumbauk hill, 

 Mount station. 



Obsened 

 Angles. 



Diff. 



81 21 r5,2 

 10 32 16,8 

 88 06 38,2 



—.03 

 —,02 

 —,03 



5C y 



[l£0 00 00,2J ,08 ,08 -4-,! ISO 



Error. 



Angles for 

 calculation. 



81 21 05,1 

 10 32 16,8 

 88 06 38,1 



1.,^ ^ ^ . . ( iNorth enJ of the base. 

 Mount station from < „ / 7 in 



^ Ftrumuauk hiil, - - 



Distances 

 in t'cet. 



8046,7 

 43495,4 



South End of the Base from Mount Station 40965,8. 



South end of the 



base. 

 Mount station, 

 Perumbauk hill, 



102 37 14,7 

 10 Zh 12,9 

 66 47 32,4 



1180 



„ , > r ^ South end of the base, 

 ^ Mount station, - - 



8189,2 



43495,5 



It appears from examining the above triangles, 

 that there is a difference in the distance from the 

 north end of the base and Moinit station, by the 

 first and second triangles, and also a dilfcrcnce in 

 the distance from the south end of the base to Pe- 

 rumbauk hill. It may be necessary to notice here, 

 that there was great difficulty in taking all these 

 angles, on account of the very thick vapour which 

 constantly floated near the surface of the fiat where 

 the base line runs, almost immediately after day- 

 light, to very near the time of sun-setting. Ail 

 the angles, and particularly at the north and south 

 end of the base line, have been repeatedly taken, 

 and tlKi only time when tlie flag-staff appeared dis- 

 tinctly, -was in the morning of the 7th of October^ 

 "- - - U 3 



