Some observations made in North-Greenland 1928. 53 
Unfortunately however, I could find neither at Upernivik nor at 
Umanak sea-wrack of use in accessible places. 
At the factory (Udstedet) Proven conditions were far more pro- 
pitious, and I had opportunity to measure on the 23th of Aug. 1923. 
Redcoloured anchorage mark 
ESS I 
re 
= SNG ES AG 
S ИХ” A ls, yj 
if BL 
YLE 4 USAGE 
Ring-bolt 
Fig. 12. Boulder with ring-bolt at Proven. 
The result of my levelling to the top-edges of 13 stripes of sea-wrack 
was а medium-distance of 1,20 m below a chosen datum, which is that 
point on the topside of a large boulder in the beach where a ring-bolt 
is fastened in the boulder (further information in the fig. 12, which 
has been drawn from ship in anchorage). 
Former sinking and reelevation of the land. 
In the island of the colony Umanak I made an excursion to the 
Spraglede Bugt at the western side of that island. When mounting the 
hill (with a cairn) just south of Spraglede Bugt my attention was drawn 
to a multitude of very different-sized stones and boulders strewn all 
over the rather even upper part of the domical top of the said hill. 
As well the places and positions as also the forms of these stones impressed 
upon me the decided opinion, that this portion of the hill had not been 
inundated by the sea at any periode after the time, when the land 
had been denuded from the landice. The greater part of the said, irre- 
gularly spread stones on the hill top, could impossibly have remained 
in such positions as their present, if a surf had had an opportunity to 
work upon them. A fair portion of gravel was found on the hill top, 
but I suppose, that it origines from disintegration and frost-bursting. 
On the next hill to the south (also with a cairn) the case was a 
similar, but not so decidedly expressed; indeed this hill is also lower 
than the former. 
