Survey of Northeast Greenland. 399 
The framework of the survey formed a series of stations, the 
position of which was determined by means of a polygonal measuring 
with the small universal instrument and measuring tape. The polygon 
was conveyed from the above-mentioned starting point, determined 
by means of station pointing, through the grotto, which was 800 
metres long, then through a hole in the upper part of the grotto 
and from there across the glacier back to the starting point. As the 
daylight could only penetrate into the grotto at the entrance, as well 
as in two places, where the roof had collapsed, the measuring of 
the greater part of the interior of the grotto could only be performed 
by means of lanterns and electric hand lamps. 
The very shape of the grotto was determined by measuring 
abscisses and ordinates in a suitable number of transverse sections 
by means of stadia and measuring tape. The surface of the grotto 
glacier was measured by means of the small universal instrument, 
the reticule of which was fitted up for measuring distances in the 
usual manner by means of a stadium. 
“Danmark”s Vinterkvarter (Winter quarters) 1906—08, scale 
1 : 2000. 
A description of the wintering place is given by G. Amprup in 
Medd. om Gronl. ХМ, pp. 72—77; in the same volume the map is 
published (PI. II). 
The survey, which was performed in October 1907 by myself, 
assisted by WEGENER, took place by means of the universal instru- 
ment, measuring tape and stadium, in a similar manner as in the 
case of the grotto glacier. 
The signatures of the gneiss particles exposed to daylight have 
unfortunately come out so badly in the reproduction, that it has be- 
come blurred and by no means clear. 
Map sketch of Pustervig (Fig. 62). 
The ice-free coast land of Northeast Greenland has in the main 
three landscape formations, the rounded hillocks (roches moutonnées), 
the plateau landscape and the alpine landscape. The topographic 
survey at the entrance to Dove Bugt was exclusively in the rounded 
hillocks, and this circumstance quite naturally made me wish also 
to represent the two other landscape formations in topographic maps. 
As far as the alpine landscape was concerned this was, however, 
impossible, as the distance between the wintering place and the 
nearest landscape of an alpine character was at least several days’ 
march. On the other hand it was not a priori excluded that an 
opportunity might arise of making a topographic map of a smaller 
XLVI. 26 
