4 P. A. ØYEN [No. 9 



indentations of the island and in the small hays of the neigh- 

 bouring mainland. 



In the follovving pages some phenomena vvill be described 

 as observed on the above-mentioned visit to this island in the 

 summer of 1909. Plate I gives a good view of part of the 

 agglomerate rock protruding in steep vvalls or precipices right 

 in to the sea, and in some places surrounded vvith a chaos of 

 fallen rock or large boulders of the rock itself, in other places 

 by a slope of débris and fragments. In the foreground of the picture 

 vve have a conspicuously terraced shore, vvith no less than five 

 lovv terraces rising. one above the other to the height of about 

 ten metres above sea-level. Each of these terraces has a relative 

 height of between one and two metres; and they are built up 

 of fine sand and coarse gravel and stones. Some samples were 

 tåken from each of them, in order to examine their constitution 

 and obtain an idea of the formation of these rather conspicuous 

 deposits. Numbering them from the present sea-level upwards, 

 vve have the folowing series. 



I. 



This terrace vvas constantly changing its shape and appea- 

 rance as the vvaves washed towards the shore and moved the 

 rolling stones to and fro. The material consequently proved to 

 be rather washed and rounded, the stones being from the size 

 of a pea up to a diameter of 57 mm. The sample proved to 

 consist of 



Grey, archæan gneiss 2 specimens 



Reddish-grey gneiss-granite .... 2 



Grey quartzitic sparagmite 1 



Light greenish-yellow sparagmite . . 1 — 



Black schist-hornfels 1 



Dark-coloured chalk-hornfels .... 2 



Fine-grained, dark-coloured gabbro . . 2 — 



"Rauer-agglomerate" 188 — 



Littorina littorea Lin 1 



