MERIDIAN OX THE COAST OF COROMANDEL. 193 



POSTSCRIPT. 



vSince the above has been written, the triangles 

 derived from the side Maiimdoor and Poonauk, and 

 brouohtdown westerly as far as JForitty, have been 

 computed, and it appears that the distance be- 

 tween Maumdoor and JVorittij, which is common 

 to both series, exceeds the former by 6,9 feet; 

 so that the mean of tlie two, equal 13348o,0 feet, 

 has been taken for obtainina; anew both the meri- 

 dional and perpendicular arcs; the former of which 

 is 574337,04 feet, and the latter 290848,5 feet ; 

 Avhenre rhe degree en the meridian will be had 

 60495 fathoms nearly, and the degree perpendicu- 

 lar to the meridian at Carangoolij 6IO6I fathoms 

 nearly. 



The difference of (5,9 feet is more than what I 

 expected, but it has been occasioned by the great 

 difliculty in getting the angles in the great triangle, 

 Maumdoor, Jlluliapode, and Poonauk. But as it 

 appears that the side Alullapode and Maumdoor has 

 been in excess, and the side Poonauk and Maum- 

 door in defect, it must follow that the mean dis- 

 tance of Maumdoor and JToritty, brought out by 

 triangles derived from these two sides, must be 

 very near the truth. 



Now this latitude has been made use of to find the latitude of Cur- 

 natin-hiir, and the same process has been followed for finding the 

 length of a dei>ree on the perpendicular in the latitude oi Carangooly 

 as is here given ; and that degree taken, w ith the easting of the ob- 

 servatory from the meridian of Carangooly to compute the latitude 

 a second time, which came put 12° 32' 12'',27, and is here applied 

 for re-computing the perpendicular degree: but the ditlierence is 

 too trifling to aftect the difference of longitude, and therefore the 

 degree comes out the same. 



It is scarcely necessary to notice, that the distance of the obser- 

 vatory from the meridian of Trivandepoorum hexug so trifling, no 

 spheroidal correction has been thougiit requisite for obtaining the 

 latitude of tiie point M, and jimch less for that of C 



Vol. VIII. O 



