314 I. P. Koch. 
It will at once be evident that this arbitrary projection is a 
modification of Mercator’s conform cylindrical projection, and comes 
so near to the latter, that on the journey itself one may waive all 
scruples as regards the difference. 
The correction from azimuth to rhumb line need not be taken 
into consideration on the journey. 
Extract from Koch’s diary on Peary Land.') 
May 1907. 
The object of this extract from my diary is, by publishing in 
full the original cartographical material from a limited field, to throw 
light upon what has been said in the foregoing about the geographical 
survey of the Danmark-Ekspedition. But at the same time I wish 
to enable my readers fully to appreciate the work done, and for 
that purpose it is necessary not only to publish the cartographical 
material proper, but also to give a picture of the conditions, under 
which the material was procured. For these reasons I have thought 
it most correct to give a certain part of my diary in extenso. 
The reason for my choosing to publish the cartographical material 
from the east coast of Peary Land, is that the material has a special 
interest, owing to the fact that the country is very difficult of access. 
It is not improbable that centuries may pass, before its shores are 
again invaded by the foot of man. 
I give the diary exactly as it was written, without correcting the 
language. From the phraseology itself it will, therefore, be easy 
enough to distinguish the short notes jotted down on the march 
from the more consecutive description written in the tent. The 
names used in the diary correspond to those of the sketch map 
made during the voyage (see Pl. VIN); but they have been, in a great 
measure, altered during the process of preparing the final map. In 
my quotations from the diary I have filled in the headings of the 
observation tables; this I have, of course, not done in the original. 
The sketch map (Pl. VIF) has naturally been a good deal knocked 
about. The route which is only in part entered in it, is difficult to 
follow. Neither do the observation stations appear clearly on the 
sketch map. On the finished map (PI. IV) it will be easy enough to 
follow the route and find the observation stations, here indicated 
with a K with a date affixed. 
My sledge party consisted of AAGE BERTELSEN, the artist, the 
Eskimo TOBIAS GABRIELSEN and myself. We drove three sledges, and 
1) In Medd. om Grenl. XLI, р. 124 and the following Capt. Amprup has given a 
report of my voyage to Peary Land in 1907. 
