Some observations made in North-Greenland 1923. 47 
way of photogramtry, and he states, that in 1912 the vertical distance 
between stat. B and cote IT (practically the same as the nearest point 
of the ice) was — 2,40 m. My measurements with theodolite from stat. B, 
in using the horizontal distance of Mercanton, gives a vertical distance 
of + 0,26 м between В and the nearest point of the ice, which, just 
as in 1912, lay a little north of the glacier-brook. I have supposed the 
inclination of the ground in the vicinity of the edge to be 15° to 20° 
and I have got my supposition strengthened through calculations of 
the elevations between cote I & II and cote II & III respectively in 
M.’s sketch-map. Starting from the abovenamed change in vertical 
distance and the supposed inclination, I find that the edge of the ice 
has retracted about 10m from its position in 1912. I explain this 
retraction, small as it is in comparison with that of the northeast part 
of the glacier, in the quite natural way, that the southeast patch is 
extending down in a rather narrow valley, the sides of which and the 
close-to Unartorssuak will derive the glacier of direct sunshine a great 
part of the day, and further it may be the case, that this part of the 
glacier has not altogether ceased to move. 
On account of the change in form of the glacier I could not refind 
the points, which M. indicates as cote I & III, and consequently I 
could make no remeasurements. The close position of M.’s curves of 
level tells of a thickness and declination of the patch of the glacier, 
which was not traceable any more; accordingly I venture to say that 
also in this place the melting of the glacier goes on principally as re- 
duction in thickness. 
No more than in 1897 I got opportunity to visit the neighbour 
glacier to the north; however, I have calculated — as did also M. — 
from angels and estimated distances the retrogradation as well of glacier 
no. 2 as of no. 3 on the opposite side of the Blæsedalen, well knowing 
that the estimation of distances is very approximate only. The results 
are: 
Retrogr. Retrogr. 
1897—1912 1897—1923 
Glacier no. 2 (gl. Petersen acc. to M.).... 80m 150 m 
— - Э(- Pjetursson — - -).... 40 - 60 - 
Judging by local observations and the photographic material at 
hand I wish to point out some facts: 
The ice on the top of Unartorssuak to the right of aim 37°17’ (from 
stat. [) projected in 1923 as a pillow over the edge of the mountain, 
whereas the same part was ice-bare in 1897. The little bare rock in 
the middle of M.’s photo from stat. A has a rather steep wall against 
a partly ice-bare valley along the NW-side of the glacier. The glacier- 
