i;/..i(/.i/. i;hA)iA)Gy of xort// Greenland 771 



oil a plateau like that opposite the island of Disco could push 

 out across a body of water like the Waigat, and overspread the 

 island, witliout inflicting- pronounced wear on the east bluff-face 

 (stoss side) of that island. The freedom of the steep east side 

 of Disco from such marks as the moving ice should have left, 

 indicate that Cjreenland ice never surmounted it. 



I"\irther north in Whale Sound stands Herbert Island, distant 

 but a few miles from the coast of Greenland to the south. For 

 a considerable distance, the opposite coast of Greenland appears 

 to have been glaciated, at some relatively recent time, by ice 

 moving toward the coast ; but the topography of the south face 

 of Herbert Island gives no suggestion that the ice from the 

 mainland ever reached it. The north face of Herbert Island 

 likewise fronts a coast which may have been continuously 

 glaciated, but there is nothing in the topography of the north 

 face of the island, or so far as known in its drift, to indicate that 

 ice from the north ever bridged the water which separates it from 

 the land to the north. Other islands in similar relations might 

 be mentioned, showing similar phenomena. Professor Chamber- 

 lin has called attention to the phenomena of Dalrymple Island,^ 

 and Cone Island (Fig. i) near the entrance of Jones Sound is 

 equallv striking. 



There are then in the northern waters small islands, and their 

 number is considerable, lying near much larger bodies of land, 

 which appear not to have been glaciated except by ice origina- 

 ting on themselves. 



Along those parts of Greenland where the coast is less high 

 and rugged, and where the main ice-cap reaches the edge of the 

 upland, it does not push out to sea as a continuous sheet, but as 

 a series of glaciers, separated from one another by high hills of 

 the nunatak tvpe, though not completely surrounded by ice. 

 These ice-free mountains stand up several hundred, and in some 

 cases one or two thousand, feet above the ice on either side. This 

 shows that the valleys are sufficient avenues of discharge for the 

 ice-sheet, as now developed. The amount of snow fall and ice 



'Jour, ok Geol., Vol. II, p. 66i. 



