Kontinentalglaciatiou og lokalnedisning. 5 



progressive motion, carried with them the masses o£ stone 

 which they had torn from the mountains. It is easy to 

 explain why no trace of these masses thus separated is to 

 be found immediately below the precipices thus formed. 

 As these mountain precipices are often from three, four, to 

 five thousand feet high, and the valleys over which they 

 hang are likewise several thousand feet in breadth, it must 

 be a matter of astonishment to think of such valleys being 

 filled with ice to the extent of several miles. This ice in 

 lower districts must have stretched a long way out into the 

 sea, and, on its thawing, large masses must have broke 

 loose, and gone out to sea, as we find takes place now in 

 the polar regions. I have no hesitation in affirming this, 

 when I survey the efifects of immense masses of ice, where 

 there is no room to be mistaken. I shall further mention 

 the supposed effects of glacier ice in another part of Nor- 

 way, at the level of the sea» (1. c. Pag. 118—119). Og 

 derpaa følger følgende skildring fra sundet mellem fastlandet 

 og østre Sulenø: «On this rock there seemed to me proofs 

 of the powerful operation of ice. I found that the pre- 

 cipices on the side of the mountain next the Sound were 

 several feet in height, and perfectly perpendicular ; and 

 though they were composed, as I have mentioned, of 

 boulders cemented together, they were perfectly even and 

 smooth. If these precipices had been the effect of rents, 

 attended with successive masses tumbling down, then the 

 boulders adjoining the rent must have been found adhering 

 sometimes to the one and sometimes to the other of the 

 separated masses, (those which have fallen into the sea are 

 no more to be seen); and, in that case, the boulders left in 

 one mass must have left a mark of itself in the correspon- 

 ding one. This, however, was by no means the case, as 



