37 



Etter færdig Ekvipering i Hammerfest til Spidsber- 

 gensturen (antagelig omkring den 29de Juli) scjles til Far- 

 vandet tnellem Beeren Eiland og Spidsbergen, hvilket an- 

 tages at kunne undersøges tilstrækkeligl veil ."> Tversnit. 

 Fra Sydkap sejles vestover til Grønlandsisen, nordover 

 langs Isgrændsen og derpaa østover mod Mundingen af Is- 

 fjorden. Det meste Tversnit tænkes lagt vestover fra Kings- 

 bay til Isgrændsen og det sidstc store Tversnit lidt norden- 

 for 80° Bredde. Den lier nævnte Del af Turen med 27 

 Stationer (25 Temperaturrækker, hvoraf tiere smaa, 11 

 Skrabninger) samt Tilbagerejse til Hammerfest beregnes 

 med 6 Mils Fart, til W, 1 ,. Døgn. 



Paa Optur soges Aibejdet paa Soen først fremmet 

 med den Hurtighech soni Undersøgelsernes Nøjagtighed kræ- 

 ver og Vejrforholdene tillade. Ere de sidste gunstige, an- 

 vendes de følgende Dage til mere specielle Undersøgelser 

 paa Spidsbergens Banker, i dens Fjorde. i Land. Under 

 tidligere indtræffende ugunstige Vejrforhold. tåges de sidst- 

 riævnte Arbejder i Mellemtiden, om muligt, og Arbejderne 

 i Soen under de gunstigere Perioder. Tilbagerejsen tiltræ- 

 des omkring den "24de August og gaar til Hammerfest eller 

 (nærmere) til Tromsø, hvor den kjendte Mand sættes af. 

 Herfra til Bergen, hvor Expeditionens derboende Deltagere 

 gaa fra Borde, hvorpaa Rejsen fortsættes til Christiania og 

 Horten, hvor Desarmeringen tinder Sted. og Fartojet gjøres 

 istand til Overleverelse til Rederiet. 



De videnskabelige Arbejder udføres væsentlig paa 

 samme Maade som i 1 s 7 7 . 



Ved Lodningerne og Temperaturrækkerne soges er- 

 holdt saamange fuldstændige Sammenligninger mellem de 

 forskjellige Slags Dybvandsthermometre, som Omstændighe- 

 derne tillade. En nojagtig Undersøgelse af de ved de to 

 første Togter benyttede Dybvandsthermometre ved Sammen- 

 ligning med nyere Sorter er af største Vigtighed for den 

 nøjagtige Bestemmelse af Temperaturen i Dybet paa, de af 

 Expeditioneh i 187(3 og 77 bésøgte Strækninger. Bund- 

 prøve tåges ved hvert Lodskud og opbevares. Temperatur- 

 rækkerne tåges saa tut. at en utvetydig Kundskab erholdes 

 om Varmefordelingen i Dybet. I Polarstrømmen kunne de 

 Heste Temperaturrækker indskramkes til de øverste Vand- 

 lag (til — 1"). idet et Par fuldstændige Rækker tåges gjen- 

 nem hele Dybet til Oonstatering af Temperaturforholdene. 

 Strømmaalinger forsøges. Ligeledes tåges om muligt ved 

 hvert Lodskud og paa enkelte Stationer. hvor det ansees 

 ønskeligt. i intermediære Dybder Vandprøver til Bestem- 

 metse af s))ecitisk Vægt og chemisk Lndersøgelse. Et 

 Piezometer bor medfølge hvert Lodskud. dels som Control 

 for Dvbden dels til Bestemmelse af Piezometrets Constanter. 



year's cruise, a singular anomaly of temperature was ob- 

 served. 



Having retitted at Bammerfest (by åbout the 29th of 



• I ulv i for the excursioD to Spit/bergen, the Expedition shall 



at once proeeed to the traCt hetweeii lieeren Eilaild 



and Spitzbergen, for investigating vvhich three trans- 



verse sections will probably prove sufficient. From Smith 

 ('ape thi' rimise will be west\v,'ird to the ( ireeiiland iee. 



then northward along the ice-barrier, and thea eastward 

 for the mouth of the [ce-Sound, The next transverse sec- 



tion should. it is opined. stretch westward from King's 

 Bay to the ice-barrier, and the last of the large transverse 

 sections lie north of the 80th parallel of latitude. This 

 third part of the entire cruise, with 27 Stations (25 serial 

 temperatures. several of them short, and 1 1 hauls of the 

 dredge), incliiding the run back to Hammerfest, is calcu- 

 lated, with a speed of 6 knots. to take 13days and a half. 



On the passage out. all deep-sea work shall be done 

 first, as expeditiously as may prove consistent with accura te 

 investigation and the state of the weather. Provided the 

 latter be favourable. some few ilays may then be devoted 

 to more special investigations on the banks of Spitz- 

 bergen. in the fjords of the island. and on shore. Bad 

 weather supervening, the exploratiou of the depths shall he 

 broken off. to he resumed under more favourable circum- 

 stances, and the work on the banks prosecuted. ifpossible, 

 in the interim. On the homeward passage — to commence 

 about the 24th of August - the Expedition will make for 

 Hammerfest, or possibly a nearer point, Tromsø, where 

 the pilot will (piit the ship. From here the homeward 

 course runs straight to Bergen, where the members of the 

 Scientific Staff resident in. that city disembark, after which 

 the vessel will proeeed to Christiania and Horten. At 

 Horten she will be paid off. and put in order previous to 

 being given up to her owners in Bergen. 



The scientific work of the Expedition to be prosecuted 

 essentially as in 1877. 



When taking soundiugs and serial temperatures, the 

 various kinds of deep-sea thermometers shall be compared 

 together as closely and as frequently as circumstances may 

 admit of. A rigorous testing of the deep-sea thermom- 

 eters employed on the two first cruises, by compæring them 

 with those of a later construction. is of the utmost impor- 

 tance as regards the true determination of the temperature 

 in the deeper strata of the ocean-tracts then visited by the 

 Expedition. A sample of the bottom shall be brought up 

 at every sounding. and preserved for subsequent examina- 

 tion. The serial temperatures shall be tåken sufficiently 

 close to afford a clear insight into the thermal condi- 

 tions throughout the ocean-depths. In the Polar current, 

 most of the serial temperatures may be confined to the lip- 

 per strata (to — 1 °), two complete series being tåken 

 throughout the entire ilepth. to substantiate the nature of, 

 the thermal couditions. Observations are. ifpossible, to 

 be tåken for ascertaining the rate and direction of currents. 

 Moreover, with every sounding. and at some stations from 

 intermediate depths, a sample of the sea-water shall. if 



