370 I. P. Косн. 
stretches — mainly the east side of Store Koldewey — was it directly 
used for the drawing of the geographical maps, because later on a 
minute survey of the same parts was made by means of a plane 
table. 
Kocx surveyed the greater part of Annekssøen and considerable 
parts of Germania Land. 
LINDHARD and WEGENER took charge of the cartographic work 
during BERTELSEN's sledge trip in March 1908. Besides the terrain 
round the route indicated in the map, scale 1 : 500000, LiNDHARD and 
WEGENER in the course of this journey mapped out the greater part 
of Sælsoen and a small section of Annekssgen. 
CHARLES POULSEN made a croquis of the region west of Pustervig, 
as far as the interior of Hellefjord. 
C. B. THOSTRUP, in the course of the, sledge journey to Ile de 
France in April 1907, performed cartographic surveys on Ile de France 
and Germania Land. 
G. THosTRuUP on several occasions made surveys in the terrain 
round Kap Peschel. 
Nearly all of the members of the expedition have in a greater 
or lesser degree taken part in the survey work, and in various ways 
contributed to the compiling of the cartographic material. In parti- 
cular BERTELSEN must be mentioned, because he has taken part in 
the longest and most strenuous sledge expeditions, and because, 
through his excellent sketches, he has provided very good material 
for a figuration of the relief, which considering the circumstances is 
quite reliable. 
The symbols used in the map will in the main be understood 
direct or by means of the explanation of signs. It will, however, be 
justifiable to set forth a few more particulars: 
Contours are used not only to indicate the border line between 
land and water, but also to show the border line between land and 
inland ice, which line in nature often stands forth as sharply as a 
coast line. In the usual manner a fully drawn contour indicates the 
fact that the border line in question may be said to be plotted on 
the map, whereas a dotted line indicates a higher degree of un- 
certainty. - In the places where the circumscribing contour between 
land and inland ice is left out altogether and is replaced by a colour 
transition in the map, it does not mean that we have no conception 
at all of the position of the border line, but simply that this con- 
ceplion is so uncertain that it has not been possible to express it in 
the drawing. 
Where the coast line proper — the border line between land and 
water — is fully drawn, it may thus be considered as well determined. 
