sammenhængende paa hele Strækningen eller gjennem- 
brudt paa Midten i en Dybde af 1500 Favne, kan 
ikke med Sikkerhed afgjøres. Efter Temperaturforhol- 
dene i Dybet har jeg henlagt Lodskuddet paa 1500 
Favne (Station No. 298) til det nordlige Bækken. 
f) Lodskuddet 1200 Favne (Station No. 303, 75012’ N.Br., 
302’ FE. L.) har voldt mig ikke lidet Besvær. Det 
ligger midt imellem lutter større Dybder. Jeg har 
tegnet en Top, men det kan derfor gjerne være Til- 
fældet, at man har en fra Nord eller Syd udgaaende 
Ryg, der indeslutter en østenfor samme liggende For- 
dybning. Denne Usikkerhed har Indflydelse paa Frem- 
stillingen af Partiet ved den 77. Breddegrad. 
g) I Nordvest for Spidsbergen er det tegnede Bundrelief 
til en vis Grad hypothetisk, med den langstrakte Bank 
paa mindre end 500 Favne. Paa dennes Midtparti 
findes nemlig ikke noget Lodskud. 
Førend jeg beskriver det ved Lodningerne vundne 
Billede af Havbundens Form, vil det være hensigtsmæssigt 
at fastsætte nogle geografiske Benævnelser paa de forskjel- 
lige Dele af det europæiske Nordhav. 
Nordsøens nordlige Grændse sættes efter en Linie fra 
Stad til Shetland og Orknøerne. Mod Nordvest støder 
den til Færø-Shetland-Renden (Lightning Channel) mellem 
Shetland og Færøerne. 
Det norske Hav begrændses af Linien Stad—Shetland— 
Færøerne — Øst-Island —Jan Mayen — Syd-Spidsbergen — 
Nordkap— den norske Kyst fra Nordkap til Stad. 
Grønlandshavet begrændses af Nord-Island, Øst-Grønland, 
Vest-Spidsbergen, Linien Spidsbergen—Jan Mayen — Nord- 
Island. Gjennem Danmark-Strædet mellem Island og Grøn- 
land munder Grøndlandshavet ud i Nord-Atlanterhavet, 
gjennem Jan-Mayen-Renden staar det i Forbindelse med 
den sydlige Del af det norske Hav. 
Øst-Havet begrændses af Linien Syd-Spidsbergen— Nord- 
kap, Finmarkens Kyst, Ruslands Nordkyst, Novaja-Semlja, 
Øst-Spidsbergen. 
Havbundens Form. I Kartets sydvestlige Hjørne møde 
vi Nordatlanterhavets Dybder, hvis Arme omspænde Rockall- 
Banken og som støde op til Bankerne vestenfor Irland, 
Skotland og Færøerne, sondenfor og vestenfor Island. De 
britiske Øer ligge samtlige paa den Bank, der danner 
Nordsøens Bund, og som har et brat Affald mod Vest. 
Mellem den sydvestlige Færø-Bank og Nordsøbanken, i 
Nord for Hebriderne, i Nordvest for Orknøerne, er der 
en sammenhængende smal Ryg, Wyville Thomson-Ryggen, 
der paa Dybder større end 330 Favne fuldstændig adskil- 
ler Nordatlanterhavets Dyb fra vort Nordhavs. Denne 
Adskillelse fortsættes uden Afbrydelse af dybere Steder 
over Færø-Bankerne og videre mod Nordvest over Island 
indtil Grønland. Mellem Færø-Banken og Øst-Island hæ- 
ver sig en bredere Ryg paa omkring 250 Favnes Dybde. 
Dens dybeste Punkt ligger paa ikke mere end 277 Favne, 
be wholly continuous throughout the entire tract or 
disrupted in the middle at a depth of 1500 fathoms, 
cannot with certainty be determined. Reasoning from 
the temperature in the deep strata, I have placed 
the 1500-fathom sounding (Station No. 298) in the 
north basin. 
f) The 1200-fathom sounding (Station No. 303, lat. 
75° 12’ N, long. 3° 2’ EK) has occasioned me not a 
little perplexity. It lies midway between great depths. 
I have figured a summit; but just as likely may a 
ridge be found to extend from the north or south, 
enclosing an eastward-lying recess. This uncertainty 
exerts its influence when figuring the part of the bed 
on the 77th parallel of latitude. 
¢) North-west of Spitzbergen, the contours of the bottom, 
as given in the plate, with the far-stretching bank at 
a depth of less than 500 fathoms, is to a certain extent 
hypothetical. In the middle part, namely, no sounding 
has yet been taken. 
Before proceeding to describe the figure of the 
sea-bed as shown by the soundings, it will be advisable to 
state a few geographical appellations for the various parts 
of the North Ocean of Europe. 
The northern boundary of the North Sea is held to 
be congruent with a line extending from Stad in Norway to 
the Shetland and Orkney Islands. Towards the north-west, 
it meets the Hæroe-Shetland Channel (Lightning-Channel), 
between Shetland and the Feroes. 
The Norwegian Sea is bounded by the line Stad—Shetland— 
Færoes— East Iceland—Jan Mayen—South Spitzbergen— 
North Cape—Norwegian coast from North Cape to Stad. 
The Greenland Sea is bounded by North Iceland, Fast 
Greenland, West Spitzbergen, and the line Spitzbergen— 
Jan Mayen—North Iceland. Through the Denmark Stratt, 
between Iceland and Greenland, the Greenland Sea disem- 
bogues into the North Atlantic; through the Jan-Mayen 
Channel it is connected with the southern part of the 
Norwegian Sea. 
The Barents Sea is bounded by the line South Spitzber- 
gen—North Cape, as also the Coast of Finmark, the North 
Coast of Russia, Novaja-Semlja, and East Spitzbergen. 
Contours of the Sea-Bed. — In the south-west corner of 
the chart, we have the depths of the North Atlantic, the 
arms of which enclose the Rockall Bank and meet the banks 
west of Ireland, Scotland, and the Færoes, as also those 
south and west of Iceland. The British Islands rest one 
and all on the bank forming the bed of the North Sea 
and having a steep decline towards the west. Between the 
south-western Færoe-Bank'and the North-Sea Bank, north 
of the Hebrides, extends, north-west of the Orkney Islands, 
a narrow continuous ridge, the Wiyville-Thomson Ridge, 
which, at depths of more than 530 fathoms, wholly separ: 
ates the North-Atlantic Deep from that of the North Ocean. 
This separation proceeds continuously, without interruption 
from deeper parts, past Iceland up to Greenland. Between 
the Færoe-Bank and East Iceland rises a broader ridge, up 
to a depth of about 250 fathoms. Its deepest summit lies 
