392 



They are slrowii willi a ^M'eal mimher ol" pebbles, partly angular, 

 flat bits of sand stone, partly water-groiiml, flatly oval or ovally 

 ball-shaped blocs ol" archaic rocks or basalt. Some of the 

 blocks have worn, sand-polished corners and edges, and a few 

 have the characteristic shapes of the "triangles". 



Fig. 16. Arctostuphiilos alpina on sandy flat; only the new slioots protrude. 

 Klitdalen. (From photo, by Chk. Krucse). 



They most often have a thin coat of clay or ooze. 



In the spring time some of the "Stensletter" are doubt- 

 less flooded for a shorter period and form extensive shallow 

 ponds with from 10 — 50 cm water upon them. This period 

 can but be of short duration; for did the flood last but a 

 couple of months mud must be forming and rests be found of 



