19 



En sandsynlig coristant Fejl af li»" i alle Højdef 

 bevirker en Fejl af 11. "6 i den beregnede Bredde og af 

 0/90 i den beregnede Længde. Resultatet bliver saaled^s 



(f - TS- 14' 48. "4 + ll."6 

 l - 15° 33' 58."5 + 16. 7 



15/9 + 1/11 



I Kgl. Svenska. Vetenskaps-Akadémiens EandMngar, 

 L3de Bind No. 9. tindes en Athandling af Dr. Aug. AVij- 

 ka mler: "Astniiininiska Observationer under den Svenska 1 

 Arktiska Expeditionen 1872—73. 1. Tids- ocb Orts-Be- 

 stamningar." I Fortegnelsen over Bredder og Længder 

 tindes lier. Side f>4. ogsaa Punkter ved Advent Baj. nem- 

 lig "Rysstugen" og "Mynningen af elfveii". begge bestemte 

 efter Observationer af Prof. Nordenskiold. 



Ved Hjelp af det af ('apt. Wille tegnede Kart over 

 Advent Baj kan jeg med Letlied reducere mine Bestem- 

 melser for ( tdden til de to nævnte Punkter. Jeg muler 



"Odden" Br. 78" 14' 48."4 L. 1? 2'» 15/92 



Red. til "Russestuen" —1.9 —2:31 



Russestuen 



do. etter Svenskerne 



78 14 46. 5 

 78 15 2. 



1 2 13.61 

 1 2 31.5 



Forskjel 



Red. t. "Mund. af Elven" 

 Muml. af Elven 

 do. efter Sv. Exp. 



— 15. "5 



29."5 



78° 14' 18. 9 

 78 14 11. 



— 17' 9. 



2/85 



P 2'» 13.(17 

 1 2 31.o 



Forskjel 



-f 7. "9 



17. 



Medens Bredderne stemme, i Middel, indenfor den 

 af tien sandsynlige Fejl betegnede Orændse. ere de Svenske 

 Expeditioners Længder c. 18' mere ostlige end mine. Da 

 Længden af Punkterne ved Advent Bay af Svenskerne er 

 henført til Længden af Sabine's Observatorium paa Indre 

 Norskoen. og der - som af Dr. Wijkander i nævnte At- 

 handling Side 48—49 fremhævet, — er flere Grunde til- 

 stede, der gjøre det sandsynligt. at Sabines Længde er 

 for stor østlig. 16 til 30 Tidssecunder. saa tør jeg anse 

 den af mig fundne Længde for Advent Baj for at være 

 nær den rigtige. og de 18 Tidssecunders Forskjel fra de 

 Svenske Expeditioners som Correction til Sabines Længde 

 af Observatoriet paa Indre Norskoen. 



A probable constant error of lo" in all the altitudes, 

 will entail an error of 11. ''li in the computed latitudes and 

 cl' 0/90 in the computed longitude. The result is tims — 



, f = 78' 14' 48."4 ±.11. "ti 



). - 15° 33' 58."o ± 16. "7 = P 2 



L5/9 + 1/11 



In Kgl. Svenska Vetenskaps-Akadémiens Handlingar. 

 \ ol. 13. No. '.'. Dr. Aug. Wijkander has furuished a paper 

 entitled "Astronomiska Observationer under den Svenska 

 Arktiska Expeditionen 1872—1873. I. Tids- och Orts-Be- 

 stamningar." The List of Latitudes and Longitudes. p. 

 54, includes tbose of two points at Advent Bay. viz. 

 "Rysstugen" and •'Mynningen of elfven," both determined 

 from the" observations of Professor Nordenskiold. 



By referring t<< ('apt. Wille's map of Advent Bay. I 

 could easily reduce my determinations for the tongue of 

 •land to those of the Swedish observer for the two points. 

 The results were as follows: — 



Tongue of land Lat 78- 14' 48/4 Long. P 2<" 15/92 



Red. to "Russian Hut" — . — 1.9 — —2.31 



Russian Hut _ 

 Do. Swed. Observ. 



7s 14 46.5 

 78 15 2 



Difference 



Red. to "Mouth of River" 

 Mouth of River 

 I )(> Swed. ( (bserv. 



- lo. "5 



29."5 

 78° .14' 18."9 



7s 14 11 



Difference 



17/ 9 



Whilst the mean of the latitudes agrees within the 

 limits of the probable error. the longitudes determined on 

 the Swedish Expeditions are about 18' farther east than 

 mine. The longitude of the points at Advent Bay being 

 referred by the Swedish observers to the longitude of Sa- 

 biner ( )bservatory on "Inner Norway Island." and several 

 reasons - - as adduced by Dr. Wijkander in the above- 

 liientioned paper. pp. 48. 49; - rendering it highly pro- 

 bable that Sabine's longitude is too far east, r - from 16 

 to 30 seconds in time. — I may regard my longitude for 

 Advent Bay as verv nearly correct. and the' 18 seconds in 

 time by which it differs from that determined on the 

 Swedish Expeditions. as a correction for Sabine's longitude 

 of the Observatory on Inner Norway Island. . 



9. Jan Mayen. 



Den 30te Juli 1877. om Ettermiddagen, da "Vørin- 

 gen" befandt sig i Mary Muss Bugten paa Vestsiden af 

 Jan Mayen, brød i kurte Stunder Solen igjennem Taagen. 

 on der observeredes to Solhøjder. netop som vi lettede fra 

 Ankerpladsen. 



9. Jan Mayen. 



In the afternoon of the 30th of July. 1877. — the 

 -Voringen" lying at anchor in Mary Muss Bay on the 

 west coast of Jan Mayen. — the sun broke at intervals 

 tbrougb the mist. and two solar altitudes were tåken, just 

 as we were getting under weigh. 



