• : ..ON THE MERIDIAN.'... 5.9 



For the purpose of reducing the terrestrial arc, the following angles, 

 with their including sides, have been used, to obtain sides more conve- 

 niently situated wjth the meridian of Dodagoontah station, to which the 

 whole Arc is reduced. - p 



The angle at the South East end of the base , between Parteemalli 

 and Putchapolliam station, corrected for the chords, equal 112 5 9.2 with 

 the including sides, Parteemalli from S. E, end of the base, equal 107454.5 

 feet, and S. E. end of the base from Putchapolliam, = 27 561. 2 feet; 

 hence the distance Parteemalli from. Putchapolliam == 120553.6 feet, and 

 the observed angle at the S. E- end of the base ^= 112 5 9.87. 



With the internal angle at Perrioormal 'li , equal 143 £7 32.7 corrected 

 for the chords, and the including sides, Perrioor'malli from Suddragherry t 

 equal 204679.3 feet, and Perrioornialli from Vullunkota, equal 152154.4 

 feet; by which the distance from Suddragherry to Vullunkota is found 

 339403.5 feet. The observed! artgle at Perrioormalli— 143 37 44.17. 



The internal angle of Munpotha, corrected for the chords, equal 144 29 

 34.42, with the including sides, Kunnimapotha from Munpotha, equal 

 88877 feet, and Munpotha from Punnae station, equal 427372 feet; the 

 direct distance from Kunnimapotha to Punnae station is found 126133.4 

 feet. Again, with the internal angle at Koodunkolum, corrected for the 

 chords, equal 97 44 36,' and the included sides Koodunkolum from Kun- 

 nimapotha, equal 121934.1 feet, and Koodunkolum from Punnae station, 

 equal 19779.5 feet, the same direct distance from Kunnimapotha to Pun- 

 nae station is found 126131.4 feet ; the mean of which is 126132.4 feet. 

 The angle at Kunnimapotha between Koodunkolum and Punnae station, 

 corrected for an observed one, is 8 56' 21,39, which is used in reducing 

 the Arc. 



