136 PROFESSOR EDWARD HULL, M.A., LL.D., F.R.S., F.G.S., ON 



the interior snowfields and glaciers, during this depression of 

 the land, and that the effects of the previous intense cold had 

 not altogether passed away, we may well suppose that some 

 of the glaciers actually entered the arms of the sea, giving 

 rise to icebergs of greater or less size, as in Greenland at the 

 present day, and then passing down the fjords, laden with 

 boulders, stones and mud, would have carried these materials 

 into the North Sea, and as they melted would have deposited 

 their burdens over its floor. Indeed ^ve may go further and 

 suppose that the sea was crowded with small bergs and rafts 

 of ice at this period, which though very recent was probably 

 of long duration. In this way we may account for the 

 spread of glacial detritus over the floor of the North Sea, 

 which by the aid of the currents would naturally he carried 

 into the channels and depressions of any river-valleys eroded 

 through the solid rocks of which the floor Avas originally 

 formed. In this manner then, we may account for the fiUing 

 up of the channels which we may suppose are continuous 

 with those of the fjords under the waters of the North Sea 

 though undiscoverable by means of the sounding line. 

 These conditions appear to have continued until a pause in 

 the course of subsidence occurred ; after which a reverse 

 movement set in during which the land was re-elevated and 

 ultimately arrived at approximately the position it holds at 

 the present day.* 



Part IV. 



1. Comparison of the Scan dmavian features ivlth those of 

 Scotland. 



Allowance being made for the difference of size between 

 Norway and Scotland, there is a remarkable similarity 

 between the physical features of both countries, indicating 

 what may be termed sympathetic incidents in their physical 

 history. Briefly stated, the following are the points on which 

 this similarity is founded : — 



a. In both cases the rocks are mainly either of Archeean, 

 or of very ancient geological age. 



* During the ve-elevation there were doubtless pauses in the 

 movement represented by the successive terraces to which I have already 

 referred. 



