18 



8. 



Magnetiske Iagttagelser. Daglige -- om. Vejret til- 

 lader det — Bestemmelser al' Misvisningen, Inclma- 

 tion og Intensitet. Observationernes Beregning saa- 

 vidt ske kan. Observationer paa Land- (Basis-)Sta- 

 tioner til Bestemmelse af de nødvendige magnetiske 

 Konstanter. 



Lejlighedsvise Iagttagelser, hvortilTid og Sted maatte 

 givé Anledning. _ saasom hydrografiske Undersøgelser, 

 astrononiisk-geografiske Stedbesteinmelser, geologiske 

 Iagttagelser m. m. 



Den 14de April blev Dampskibet "Vøringen" i Ber- 

 gen overtaget for Expeditionens Regning, og det overdro- 

 ges DHrr. Brunchorst & Dekke at udføre Forandringerne 

 og Indredningsarbejderne elter den vedtagne Plan. Mod 

 Slutningen al' "Maj Maaned var disse færdige og samtlige 

 Apparater . saavidt muligt paa Plads, hvoretter Expeditio- 

 nens Deltagere, Professorerne Mohn og Sårs, Dr. Daniels- 

 sen, Hrr. Friele. Hrr. Svendsen og Landskabsmaler Schiertz 

 embarkereae. Som Skiljsofficerer var 'antagne Premierlieut- 

 nant i Marinen R. M. Petersen og Skibsfører J. Grieg. 



< > i ii Morgenen den Iste Juni algik Expeditionen fra 

 Bergen og sejlede, iud i Sognefjorden, hvor den samme 

 Dags Ettermiddag ankrede i Esefjord. Eiter nogle Forbe- 

 redelser foretoges i Fjorden udenfor Esefjord de første 

 Lodninger og Skrabninger til Prove. Locbiingen foregik' 

 strax ilden Yanskelighed. Ved den første Skrabning havde 

 vi det Uheld, at Skrabetouget sprang, aden synderlig paa- 

 gaaende Kraft, paa Grund af en Fejl i Sannnenslagningen, 

 hvilket var saameget mere uheldigt, som det vakte Tvivl om 

 Tougverkets Grodhed. Dette Viste sig imidlertid senere ud- 

 mærket, og den første var den eneste Skrabe, der paa hele 

 Expeditionen gik tabt af denne Aarsag, Den næste Skrab- 

 ning var ogsaa uden Resultat, da Farten havde været for 

 stor, hvorved Skraberi strå x Løftedes fra Bunden, men her- 

 med yar ogsaa. den fornødne Erfaring indvunden med Hen- 

 syn til. denne Manøvre. 



Anden Pintsedag. den ote Juni. foretoges en Excur- 

 sion til Bojum-Bræen i Fjærland. Porøvrigt anvendtes 

 Tiden med Klargjøring af Lodde- og Skrabe-Apparaterne 

 og med deres Anvendelse paa Dybet. Den Hile Juni gik 

 vi udover Sognefjorden, tog nogle Lodskud udenfor Bøfjor- 

 den. hvpr Dybden endnu var 600 Favne "ti" ankrede mn 

 Aftenen paa n;evnte Sted. Den 9de,om Morgenen bestemtes 



Magnetical Observations (tåken daily, weather permit- 

 ting). to determine declination. inclination. and inten- 

 sity, so far as practicable. with computation of the 

 results. For determining the magnetic constants, ob- 

 servations will be instituted on shore, at base-stations. 



Occasional observations. for which time and place 

 may furnish opportunity, such as hydrographical ob- 

 servations, observations of latitude and longitude, geo- 

 loeical observations. &c. &c. 



On the 1-tth of April the S.S. "Vøringen," lying in 

 the port of Bergen, was tåken in charge for the Expe- 

 dition, and Messrs. Brunchorst & Dekke coinmissioued to 

 undertake the necessary alteratio.ns &c. in conformity 

 with the approved plan. By the latter end of May the 

 vessel was ready for sea; and all instruments and appa- 

 ratus having been got on board, and so far as possible 

 arranged. the several members of the Expedition. — Pro- 

 fessors Mohn and Sårs. Dr. Danielssen. Mr. Friele. Mr. 

 Svendsen, and an artist. Mr. Schiertz, forthwith embarked. 

 The chief- ofticers (exclusive 'of the captain) were — 

 H. M. Petersen, R.N., first lieutenant; J. Grieg, merchant- 

 captain. 



On .the morning of the Ist of June the Expedition 

 lett Bergen, steaming nortliward for the Sognefjord, which 

 it reached on the afternoon of that day. and east anchor 

 in the Esefjord, au arm of the above. After a few 

 preparations. the first soundings and dredgings were com- 

 menced. off the mouth of the Esefjord. No difficulty 

 whatever atteuded the former operation : hut at the first 

 trial with the dredge, the rope. tliough not exposed to any 

 considerable strain. unfortunately parted-, pwing to some 

 defect in the manufacture : which was the more to be regret- 

 ted, since it gave reason to apprehend that the general 

 quality of the rope-work supplied to the Expedition might 

 prove interiør. Happily. however. it turned out to be excel- 

 leut, and no otlier dredge was lost in this manner. The 

 next dredging also proved unsuecessfnl. from the speed of 

 the vessel. wliieli' was too great, causing the dredge to be 

 i lifted off the bottom. Meanwliile. sufficient experience had 

 been acquired in the use of the apparatus. 



( )n Whit Monday, the 5th of June. an excursion was 

 made to the Bojum glacier, in Fjærland. The following 

 days were occupied with gettihg in order the sounding and 

 dredging apparatas, and working tliem in deep water. 

 On the Stli of .lune we steajned out of "the Sognefjord, 

 took a few soundings uff the Bøfjord, where the depth was 

 still fouud to be not less tban ti(l() fathoms. and in the 



