22 



Bay, saa ser man ud mellem Vogel-klip og Landet." 



Et Stykke 'fra HoepstocFs Bay -tinder man et Nes. 

 tvers af hvilket der ligger nogle Klipper, som kaldes de 

 Budsen" 1 ("Zeespiegel''). 



"Wairusch Gat" kaldes Kløften- udenfor det Nes, soin 

 skyder ud paa Nordsiden af English Bay. og udenfor hvil- 

 ket det "Brielske Taarn" staar. Se Fig. 3. 



Strås vestenfor Mary Muss Bugt staar paa "Zee- 

 spiegel'^ og Zorgdragers Kart en af Havet opragénde Klippe. 

 Nogen saadan saa vi ikke. men vel et Skjær, over hvilket 

 Soen brød. Klippen er styrtet i Havet. 



Paa Kartet i -Zeespiegel" stikker Fugleberget frem 

 som et langt Nes mod Nord. I Beskrivelsen hedder det: 

 "Fra Østpynten af Mary Muss Bay skyder en Bergfod fra 



Landet ud i Soen. meget stejl og høj ved sin Vest-Strand. 

 Nu er der intet saadant udskydende Nes. Men der ligger 

 en Boe udenfor Fugleberget. 



Af Sidekratere paa Jan Mayen have vi observéret 

 tiere end der er arlagt i de ældre Karter. Jeg henviser 

 til Rejsebeskri veisen ovenfor og Kartet samt Billederne. 

 De paa Kartet som Kratere betegnede Fjeldtoppe, der 

 ikke ere omtalte i Reisebeskrivelsen, ere aflagte etter Teg- 

 ningerne og. ere antagne, paa Grund af deres Forim der 

 er eller nærmer sia den koniske, fur at svare til dette Navn. 



Adskilt ved dybe Have fra alle nærmeste Lande ligger 

 Jan Mayen ensom ude i Grønlandshavet. Mellem Norge 

 og .lan .Maven er Havet 1760 Favne dybt, mod Spidsbergen 

 over 2000 Favne, mod Grønland over lotto Favne og mod 

 Island over 1000 Favne dybt. Øens Retning er fra NE. t 

 E. — SW.tW., -den peger mod Danmarkstrædet og ligger 

 parallel Heklas Vulkanlinie. Den er efter alt hvad derom 

 er blevet observéret, bygget udelukkende af vulkanske Bergr 

 arter, og disse synes alle at tilhøre den moderne Vulka- 

 nisme. Den er saaledes yngre end Færøerne og Island, 

 hvor ældre vulkanske Bergarter ere. eneraadende" eller 

 danne Grundvolden. Dens Længde er lidt over 7 1 / a geo- 

 grafisk Mil. Den dannes a'f to større Dele. den nordlige 

 og dm sydlige, der ere forenede ved en lavere og smalere 

 Landstrækning. Den nordlige Dels største 'Bredde er 

 lidt over 2 geografiske Mile, den sydliges D/a geografisk 

 Mil. og paa «let smaleste Sted er Bredden D/ 2 Kvartmil 



ii = Ir. roche = Klippe. 



15 fathoms in South Bay. you look out between Vogel-klip 

 and the land." 



A short distance from Hoepstock's Bay "there is a 

 noss. or promontory, off which are seen a tev rocks, called 

 de Budsen" 1 ("Zeespiegel"). 



■•Wairusch Gat" is the name given to the cjiasrn 

 ly ing without the promontory that juts forth on the north 

 shore of English Bay. and beyond which rises "Brielle 

 Tower" (see Fig. 3). 



A little west of Mary Muss Bay. both on the map 

 in the "Zeespiegel" and on that by Zorgdrager, there is a 

 rock projecting abruptly out of the- sea. We could discover 

 no such rock; hut we saw a shoal over which the sea was 

 breaking. The rock in question must at some later period 

 have toppled down into the sea. 



On the map in the "Zeespiegel." the Fugleberg pro- 

 jects towards the north as a long noss. or headland. de-. 

 scribed in the account as follows: — "From the east point 

 of Mary Muss Bay. the base of a- mountain, very lofty and 

 precipitous on its west side, juts out from the land into the 

 sea." Now there is no such projecting promontory. A 

 sunken rock. however. lies ofl' the Fugleberg. 



i >f parasitic craters on Jan Mayen, we observed a 

 greater number than are given in the earlier maps of the 

 island. For furtber information on this head. the reader 

 is referred to the above account of our exploratory work. 

 as also to the Map and the illustrations. The mountain 

 summits marked on the map as craters. though not meii- 

 tioned in the account of the island. have been laid down 

 from sketches. and are. by reason of tbeir form. which is 

 more or less conical, presumably entitled to the name. 



Cut ofl' on all sides by extensive ocean tracts from 

 the nearest land. the Island of Jan Mayen occupies an 

 isolated position in the Greenland Sea. Between Norway 

 and Jan Mayen the depth reaches 17(30 fathoms. towards 

 Spitzbergen upwards of 2OO0 fathoms. towards Greenland 

 upwards of 1300 fathoms. and towards Iceland upwards of 

 1000 fathoms. The direction of the island is ironi NE. by 

 E. to SW. by W.; it points towards Denmark Strait. and 

 lies parallel to the volcanic line of Mount Hecla. As 

 previously stated. Jan Mayen is 1 m ilt up of volcanic rocks, 

 all of which would appear. to belong to the modern group. 

 Hence the island is probably a later formation than are 

 the Færoes and Iceland. where the idd volcanic rocks prevail 

 either exclusively or in greater part. Its length slightly ex- 

 ceeds 7 1 / 2 geographical miles. It consists of two large 

 parts or divisions. a northern and a southern, connected 

 together hy a Lower and narrower tract. The greatest 



1 Rudsen : Pr. roche rock. 



