67 



in this part of the country are found within the territory of 

 the archæan formation. But, as has been mentioned before, 

 the glaciers from the large bays, probably, seldom reach out 

 into the sea, and the archæan rock fragments which are found 

 at the bottom of the sea must therefore have another origin, 

 being derived either from moraines or rocks at the bottom of the 

 sea itself, or from the drift-ice which comes from the north. 



The moraines of the bottom of the sea will be especially 

 likely to contain a great quantity of rocks from the archæan 

 formation. During the ice-age the glaciers must everywhere 

 have reached the mouths of the bays, and perhaps even a 

 good way out into the sea, and the bottom — and surface — 

 moraines conveyed thither by them will therefore necessarily 

 contain an equal mixture of rocks from all the parts where 

 the ice passed through, as is seen in the moraines of Scan- 

 dinavia. And not only will much material from the archæan 

 formation have become deposited in the terminal moraine from 

 the ice-age, but the ice-bergs which were formed at that time 

 will probably have conveyed the same rocks farther out to sea. 

 The result will therefore be, that most of the rock-fragments 

 belonging to the archæan formation will occur either in or 

 outside the moraine which runs parallel with the coast. As 

 will be seen, a comparatively large amount of material from 

 the archæan formation was also found in the three first samples, 

 obtained rather far from the coast, as in No. 1, 4 fragments out 

 of 10 belong to this class, in INo. 2, 5 out of 7, and in No. 3, 

 b out of 9, whereas, in almost all the other samples found 

 nearer land, these are subordinate in quantity as compared 

 with the other ingredients. The rocks of the archæan formation 

 which were found in the samples obtained from within the moraine 

 were derived from solid rocks at the bottom of the sea, or 

 from drift-ice whcih has came from more distant pajts where 

 the archæan formation extends nearer to the coast. Of these 

 two factors now one, now the other predominates, and this point 



