368 



with Stellaria humifusa (see fig. 6), Cochlearia officinalis f. 

 minor with numerous cotyledonous plants, Glyceria vilfoidea 

 or Dnjas^ now new ones, which are still standing with sharp 

 edges without any vegetation, or beginning ones, which are 

 as yet represented only by fine scratches. 



It was not until I saw the outmost, arched parts of the 

 check-field that I had a clear understanding of the formation 



Fig. 7. Sliding clay ("Rudemark") with semi-covered S^me-tufts. Fame 

 Islands. (From photo, by Chr. Kruuse). 



of this net of cracks. Here the clay was evidently in move- 

 ment in the wet season. In the spring the whole mass, soa- 

 ked and plastic, will slide gently downwards to the beach, 

 where the breakers successively lick it away. The bottom 

 is here naked, at the most covered with flat pebbles, but 

 here and there , with long intervals stand tufts of Silène 

 acaulis, Armeria sibirica, Arenaria ciliata, Taraxacum phy- 

 matocarpum, Stereocaulon denudatum v. pulvinatum, Cetraria 



