372 ACCOUNT OF TRIGONOMETRICAL 



the pole-star observations were made at Balroyndroog^ 

 the angle between its meridian and the station at 

 Alidlapunnabetta, could not be taken, we must there- 

 fore depend altogether on computations made with 

 the oblique arc, the latitude of MnUapunnabetta, and 

 the angle at thai station with the N. pole, and the 

 station at Balroyndroog. 



Let M and B be the 

 stations ai MiiUapurma- 

 hetta and Balroyndroog 

 respectively, and let P 

 be the pole, then hav- 

 ing given PM equal 77° 

 4' 54".41, BM the ob- 

 lique arc equal 52'42". 1 (2, 

 and the observed angle 

 PMB equal 75"52'54'.k.5, 

 we shall obtain by splie- 

 rical computation the 



side BP ~ 7(3" 5i2' 08".4 the co-latitude, and the an- 

 gle BPM 52' 28".94 the difference of longitude, 

 which add to the longitude of Savendroog from Ca- 

 raiigooly hill, and Mullopumiahetta from Scrcendroog, 

 there will be 4" 9.9' 05". 1.5, the longitude of Balroyn- 

 droog fi'om Carangooly hill. 



Taking the latitude thus found for computing the 

 azimuths, the pole-star observations at Balroyndroog 

 will stand as follow: 



