BY THE RURICK. 305 



lunar distances were measured in the roads of 

 Tinian, on the 27th and 30th of September ; one 

 series on the l6th of September, when the ship 

 was 1° 26' to the east of Tinian, and the fourth, on 

 leaving Tinian, 2° 15' to the west of that island. 

 From these four series, which, as any one may con- 

 vince himself from the observations, differ very 

 little fi'om each other, the astronomer, Mr. Wales, 

 calculated the longitude of the roads of Tinian 

 145° 55' ^5" E. The true longitude is 145° 45'* j 

 the error according to this was only 10' : at 

 the islands of Boscawen and Keppell it was 13' ; 

 how then can we imagine an error of two degrees 

 and a half, to have been committed in the Pesca- 

 dores? The longitude of the Pescadores Mr. Wales 

 has deduced from the lunar distances measured on 

 the 27th of August, and on the 14th of September ; 

 on the first day the ship was in 5° east, and on the 

 last day 1(h° west of the Pescadores. The observ- 

 ations on the 27th of August, gave for the longi- 

 tude of these islands 192" 27' 30", and on the 14th 

 of September, 192° 51' 52"; the mean, therefore, 

 192° 39' 4", or 167° 20' 5^" east, t Consequently, 

 it is quite impossible that KutusofF*s Islands and 

 the Pescadores are the same. According to ac- 

 counts which Kotzebue received on these islands, 



* Espinosa Memorias sobre las Observaciones, &c. vol. ii. 

 p. 5. 



f Astronomical Observations made in the Voyages of 

 Byron, Wallis, &c. p. 12. 



VOL. II. X 



