33$ 



MEASUREMENT OF AN ARC 



Pole Star obfervations at Dodagoontah Station, and 

 the p of it ion of its Meridian. 



1805. 



Apparent Polar 

 Distance. 



"5 



Azimuth. 



Angle between 



the Pole Star 



and 



referring Lamp. 



Angle between the North! 

 Pole and referring 



Lamp. 



Month. 



July 



19 



/ /• 



1 43 58.2 





; 



1 46 42.16 



/ „ 



1 31 53 



/ // 



14 49.16 





22 



I 43 57.57 





1 46 41. 7 



1 31 56.25 



14 45.45 



Aug. 



8 



1 43 54.07 





1 46 38 1 



1 31 51.25 



14 46.85 





12 



1 43 53.05 



v o 



I 46 37.06 



1 31 48.5 



14 48. £6 





17 



1 43 51.7 



^o 



A 46 35.67 



1 31 46.25 



14 49.42 





18 



1 43 51.44 



o 



1 46 35.4 



1 31 47.5 



14 47.9 





19 



1 43 51,16 



o *» 



1 46 35.1 



1 31 45.5 



14 49.6 





23 



1 43 50.04 





1 46 33.97 



1 31 45.5 



14 48.47 





26 



1 43 49.09 





I 46 32.99 



1 31 43.5 



14 49.49 





27 



1 43 48.83 





1 46 32.73. 



1 31 44.5 



14 48.23 







Angle betwee 



n the N 



orth Pole and referring Lamp, 



14 48.31 N. E ly - 



»■■■■ i -- 





Angle betwee 

 single between 



a the ii 

 the No 



iferring Lamp and Su^endroog^ 

 rih Pole and Savendroog station, 



104 4 29.68 



103 49 41.37 N. W J y\ 



In this paper the latitude of Dodagoontah, which is the great ftation 

 for fix'ng the pofition of the meridian line, is laid down by reducing the 

 terreftrial arc between PutchapoUiam and Dodagoontah, to degrees and 

 minutes, taking the mean degree as given by the obfervations at Putcha- 

 poUiam and Namthabad near Gooiy, which is 60487.27 for latitude 

 .- // 

 1 3 ° 2 55 not differing much from the latitude of Dodagoontah. This 



gives an arc of 2 o 14.72 which added to the arc between Punnae and 

 PutchapoUiam gives 4 50 25 26, and this applied to the latitude of 

 Punnae, viz. 8 9 38.39 gives 13 00 03.65 for the latitude of Do- 

 dagoontah, This latitude exceeds that determined in 1805, by 3*74. 

 Therefore if this quantity be added to 13 4 87, the deduced latitude 



of the obfervatory [Afiatick Refearches, vol. 10th, page 374) we have 



• > i, . , . - 



13 4 12.44 the latitude of the obfervatory as corroded from the 



prefent operations. 





