286 Alf Trolle. 



С. Remarks on the soundings. 



The soundings have been in part marked down on a Chart of 

 the portion of the Greenland Sea, which hes ofï Kong Frederik VIII 

 Land between 76°— 78° N. lat. and 13°— 22° W. long. (PI. XIII). Part 

 of them, ^vith the permission of Nansen and B. Helland-Hansen, 

 have been added to their bathymétrie Chart of the Norwegian Sea 

 (PL XII). A portion of this Chart between 74°— 82° N. lat., is in- 

 cluded as it gives an excellent view of the bathymétrie conditions 

 in the Greenland Sea. 



It has been published as late as 1909 and even the most recent 

 soundings from the " Belgica" Expedition of the Duke of Orleans in 

 1905 are included, and the land contours of North-East Greenland 

 have been drawn in agreement with the discoveries of the Danmark 

 Expedition. 



The following are small corrections and additions to the Chart 

 as the result of the Danmark-Expedition : 



1. The 1500 m. curve obtains a somewhat different appearance 

 at ca. 75°— 76° N. lat. 



2. A number of new soundings have been added on the Con- 

 tinental Bank and along the coast between 76° and 78°N.lat., thus 

 filling out the isobath curves here. The soundings show, that there 

 is a sloping bank in the Greenland Sea off the coast of Greenland at 

 76°N. lat. extending from ca. 10° W. long, in towards the land. 



Similar banks occur everywhere off the Greenland coast at dif- 

 ferent latitudes, as can be seen from the bathymétrie Chart. 



This bank is the so-called Continental Bank, which, as known, forms 

 a continuation of the mainland under the sea with comparatively 

 shallow depths (less than 500 m.) and descends with a steep wall 

 towards the great depths of the Atlantic (the so-called Continental 

 Edge). 



The Bank is cut through by deeper, submarine fjords running in 

 the main direction E. N. E. and there are higher plateaus with fairly 

 uniform depths. It seems to be shallowest at some distance from 

 land (30—40 miles). 



At ca. 76°N.lat., 17° W. long, a depth of only 76 m. was found, 

 which was followed by a depth of over 300 m. some few kilometers 

 nearer the land. The so-called Belgica Bank, where the "Belgica" 

 in 1905 had a sounding of 56 m., is perhaps a similar ridge on the 

 Bank, the western edge of which at 78° N. lat. presumably lies just 

 at the place where the "Belgica" found the bank, as the shallowest 

 soundings seem to lie almost parallel with the coast in the main 

 direction N. N. E — S. S.W. and on an imaginary line connecting Green- 

 land N.E. Runding to Shannon Island (see PI. XII). 



Between the Ridge and the coast a deeper channel was found 

 (see PI. XII and XV). 



