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14
tant. paa givet Signal, en Iagttager Yinkelen mellem Medet
og Toppen, og en anden Iagttager Toppens Højde over
Horizonten. Resultatet af Beregningen var 1945 Meter.
Om Eftermiddagen loddedes 340 Favne udenfor
Sydostkap. Kursen sattes nu nordover. Taagen begyndte at
omhylle Beerenberg og vi saa dens Top og Skuldre for
sidste (.lang. I Nordost for Nordostkap, 7 Kvartmil af,
fandtes en Dybde af 1040 Favne. Dette giver en midlere
Heldning af Havbunden udenfor Nordostkap af 8 Grader,
hvilket er noget brattere end Heldningen af Beerenbergs
Basis henimod Nordostkap (efter Kartet 6.°6), men mindre
bråt end Heldningen mod Sydostkap (10°). Paa
Skraanin-gen ned mod Nordostkap. saaes en- Eruptionskegle (Krater
Sars), som tindes i ældre Tegninger, naar man ser nøje
efter, saaledes i Vogt’s Rejse og paa Lieutenant Ring’s
Tegning Fig. 7. Paa Nordsiden af Øen saaes de 3
Isbræer trædende frem af dybe Dale foran den bratte, 60°
heldende, 300 Meter høje Fjeldvæg, Fig. 5. Hvad der laa
højere, var dækket af Skylaget. Vi lik saaledes desværre
ikke se Beerenberg og dens Grundstykke fra Nordsiden, og
de store Bræers Udspring fra Snegrændsen gik ligeledes
vor Iagttagelse forbi, da Taagen efterhaanden sænkede sig.
Efter at have taget en Række Lodskud i Nord og
Nordvest for Jan Mayen, og fundet over 1000 Favnes Dyb
paa vort vestligste Punkt, hvor Luftens Temperatur om
Natten var kun licit over Frysepunktet, men ingen Is var
at se, styredes tilbage mod Øens Vestside. Da vi om
Formiddagen den 3die August nærmede os Mary Muss Bugten,
var Vejret fremdeles meget taaget. Vi styrede videre langs
Landet sydvestover og spejdede opmerksoint efter en
Leilighed til at komme i Land paa Sydlandet, men forgjæves.
Ofte tog Taagen Udsigten til Land ganske bort. og overalt
saa vi Brændingen paa Stranden lige sterk som da vi
forgjæves prøvede at lande paa Østsiden. Vi stoppede paa et
Par Stationer og loddede — se Kartet — 98 og 156 Favne.
Fra disse Stationer og fra flere andre Punkter lik vi -gode
Skitser af enkelte Partier af de lavere Dele af Sydlandet.
Efter disse er saaledes Fig. G gjengivet. Man ser den
regelmæssige Eruptionskegle Hovberg ude mod Stranden.
Længere inde. ved Guinea Bugten, dukker et lidet, men
meget regelmæssigt kegleformigt Krater (Høsaaten) op af
Lavlandet. Den låve Sydpynt vender lige mod Tilskueren.
Bagenfor det foranliggende Lavland løfter sig med bratte
Vægge Sydlandets Højfjeld. Oppe paa dette sees et.
kegleformet Fjeld (Krater Vøringen), et Krater efter al
Sandsynlighed. De bratte Styrtninger mod Havet fortsætte
lige til Gap Sydvest. Her er en naturlig Port i Fjeldet,
gjennem hvilken Havet gaar. Udenfor Nesset sees de Syv
Klipper med sine fantastiske Former.
speed of the ship being read off every five minutes on the
scale of the water-log. At the beginning and the end of
this interval, at a given signal, one observer measured with
the sextant the angle subtending between the bearing and
the summit of the mountain, and another the height of the
summit above the horizon. The result of the computation
was (>380 feet.
In the afternoon we sounded in 340 fathoms off Cape
South-East. and then steered northward. Clouds had now
begun to gather round Beerenberg, and we had our last
view of the summit and upper part of the mountain.
Northeast of Cape North-East. 7 miles from land, the depth was
1040 fathoms. This shows a mean incline of the sea-bed
off Cape North-East of 8 degrees, which slightly exceeds
that of the base of Mount Beerenberg towards Cape
North-East (according to the Map 0.°6), but is somewhat less
than the slope towards Cape South-East (10°). On the
north-eastern declivity was seen a parasitic cone(Sars’s crater),
which may be found in earlier views of the island if
carefully looked for. for instance in a prospect in Vogt’s
Travels, and in one by Lieutenant Ring, Fig. 7. On the north
side of the island the 3 glaciers could be seen jutting out from
deep valleys beyond the precipitous mountain-wall, which
is here 900 feet high and shelves at an angle of 60°, Fig. 5.
Whatever lay at a greater elevation was wrapped in clouds.
Unfortunately, therefore, we got no view of Mount
Beerenberg from the north side of the island, and the -origin of
the glaciers at the snow-limit likewise escaped our
observation. the fog having gradually descended.
After having taken a series of soundings, to the north
and north-west of Jan Mayen, and found a depth of more
than a thousand fathoms at the most westerly station,
where the temperature of the atmosphere at night was only
a little above the freezing-point, though no ice was to be
seen, we steamed back to the west side of the island. In
the forenoon of August the 3rd, when bearing down on
Mary Muss Bay, the weather was exceedingly foggy. We
steered thence in a south-westerly direction along the coast,
carefully watching for an opportunity to land. — but in vain.
The fog frequently shut out the land; and a line of
breakers was everywhere observed along the shore, the swell
being no less heavy than on the occasion of our
unsuccess-full attempt to land on the east side of the island. We
stopped twice and sounded (see Map) in 98 and 156
fathoms. At these stations and several other, points we
succeeded in sketching the scenery of the low-lying tract
in the southern part of Jan Mayen. Fig. 6 is from these
sketches. Near the shore we see the parasitic crater
Hoy-berg; and farther inland, in the vicinity of Guinea Bay, a
conical crater. — the "hay-cock," — small but regular in
form, rises from the low-lying tract around it. The Low
South Point projects in a line with the point of view.
Behind the low tract in the foreground of the engraving,
towers with its precipitous walls the plateau of the
southern part of Jan Mayen. Here may be seen a
conical-shaped mount (the Yøringen crater), in all probability of
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