D, 



'uring the present year, I published a paper, „Nogle be- 

 merkninger om ra-perioden i Norge" (Some Remarks on the 

 Ra-period in Norway), in which paper I placed the Ra-stage as 

 a special one of the Ra-period. This Ra-stage, here mentioned, 

 is characterized by the occurrence of a double series of moraines as 

 is clearly shown in the sketch map on p. 17 of the above paper. 



In the surroundings of Fredrikshald, in the south-eastern 

 part of Norway, we find a råtner large, U-shaped, and ice- 

 scratched valley, leading in a direction from east-north-east to 

 west-south-west, the lower part of it, to the west of Fredriks- 

 hald, being entered by the sea and thus forming a rather narrow 

 fiord, while, at the same time, the upper part of it, to the east 

 of Fredrikshald, forms the Tistedal, most famous for its somewhat 

 wild scenery. 



Just in the neighbourhood of Fredrikshald, quite near to the 

 old fortress, we find a fine section through part of the older 

 or outer range of the moraines above mentioned. A little 

 farther up the valley, immediately outside the boundary of 

 Fredrikshald, we meet with another, and rather large moraine 

 crossing the valley. The range, here in question, consequently 

 proves to be double-formed. Outside the moraines just mentioned 

 we find some deposits of water-worn gravels and sand that may 

 be justly regarded to be of fluvio-glacial deposition. And, even 

 if it has not been possible to trace directly the connection be- 

 tween those layers of sandy material and some clay deposits in 

 Hvaler to the south-west, I do not hesitate to regard such a 

 deposit at Kolvik, near Edsholm in Kirko, to be of nearly the 



