11 



lignedes, umiddelbart effcer at Observationerne vare tagne, 

 med Chronometer Frodsham, og hvis. Angivelser paa Stedet 



reduceredes til dotte. Ved Efteriuiddagsobservationerne 

 benyttede jeg Frodsham. 



Indexfejlen fandtes ved Middag = +"2' 8."8 ± .">". 5 Obs. 

 om Efterm. = +21.7 + 2. 3 .. 

 8 a. m. 2 p. in. s a. m. 



Barometer 750."""6 75Q."""6 749. n ""2 



Temperatur 8.°9 9.°0 8.°9 



Efter Tidssignal, observeret i Bodø den 24de Juni, 

 er for Frodshams Chronometer beregnet for Eftermiddags- 

 observationerne Correction til Greenwich Middeltid 



— 0" 52™ 12/7. 



Som foreløbiee Værdier er sat 



diately after taking the observations, was compared with 

 the Frodsham chronometer, and its several indications re- 

 duced on the spot to tliose of the latter timepiece. For 

 the afternoon-series, I used the Frodsham. 

 Index-error at Noon = + 2' 8."8±5". 5 Observations. 

 — after Noon = + 2 1. 7 ± 2 . 3 



8 a. m. 



Barometer 750.' 6 



Temperatufe 8.°9 ■ 



2 ]>. m. 



7.")i)." m 6 



9.0Q 



8 a. m. 



749.' _ 



8.»9 



The Frodsham correction to Greenwich mean time, as 



determined from the time-signals at Bodø on the 24th of 

 June. was found to be 



— 0" 52'" 12."7. 



As approximate values. 



(p = 67° 29' 50" and l = 0» 48™ 29/1 E. Greenwich. 



1877. Juni (June) 26. 



Chr 



Frodsham. 



2h' 



1 3 

 14 

 15 

 IQ 



20 



2 I 

 22 

 24 

 25 

 26 



27 



2q 

 29 

 30 



6/6 



6. 6 



6. 6 



6. 6 



36.6 



58.6 



36.6 



30. 6 



28. 6 



38.6 



46. 6 



8.6 



51,6 



54- 6 



ø 92' 



91 

 90 



13 

 13 

 12 

 10 

 8 



6 

 1 

 o 



59 

 57 

 55 

 54 

 5i 



45 

 20 



50 

 o 

 30 

 30 

 3» 

 35 

 10 



5 

 30 



30 . 

 o 



5° 



J 



+' 



6 

 3 

 3 



9 

 4 

 6 



+ 14 

 + 14 

 + 14 

 + 1 

 — 16 



Differentserne J mellem de observerede og beregnede 



Hojder ere tagne etterat den benyttede Solradius er for- 

 mindsket med l."'J foråt tilfredsstille Observationerne af 

 begge Solrender. 



Efter de mindste Kvadraters Methode bar Hr. Åstrand 



fundet 



The differences, J. between the observed and the 

 computed altitudes. were found after diminishing the as- 

 sumed semidiametér of the sun by 7. "2. to satisfy the ob- 

 servations of both limbs. 



By the niethod of the least squares, Mr. Åstrand 

 found 



å - ± 5."1; J( f 



2."6 + l."4; J). - + 0/69 ± 0/21. 



Forudsættes en sandsynlig constant Fejl af + 10", 

 bliver deus Virkning paa den beregnede Bredde + 9."9. 

 Og Resultatet bliver 



, f - 67° 29' 47/4 ± 10."O. 



Assuming a probable Constant error of ± 10". the 

 effect ou the computed latitude, will be ± 9. "9. and the 

 result therefore 



f f =67° 29' 47. "4 ± 10."0. 



