256 I. P. Kocu. 
might furthermore be possible to determine the influence on the 
latitude and azimuth exercised by systematic errors of the observations 
performed in the Observatory by the Germaniaexpedition. Further, 
one might use the opportunity to mark off the site of the Observatory 
of the Germaniaexpedition and the cairn on Hvalrosgen or that on 
Hasenberg in a satisfactory manner. Such a marking off would be 
of great interest in the case of future determinations of the geo- 
graphical co-ordinates of the Observatory. 
Sabine Island or the neighbouring part of Greenland is very 
often visited by whalers as well as by tourist steamers. A visit ex- 
tending over a fortnight would thus hardly entail insurmountable 
difficulties in the way of expense. 
During my stay at Sabine Island in the month of November 1907 
the walls of the Observatory of the Germaniaexpedition were to a 
certain extent standing. The sandstone pillar on which the instru- 
ment had been placed was still in its place, but it was loose and 
could easily be removed. The cairn on the northern point of Hval- 
rosoen had, at any rate, not collapsed altogether. The cairn on 
Hasenberg which I visited in July 1900, was at that period nearly 
intact. 
In the Observatory a granite pillar ought to be made fast to the 
ground by means of cement. With a corresponding solidity the site 
of the cairns on Hvalrosøen or on Hasenberg ought to be marked off. 
Greenwich and Cambridge are situated at 51°28’.6 and 42°22’.8 N. latitude 
respectively. If after this one computes the drift towards the west, one gets: 
From 1866—1870 in all about 55 metres: yearly average about 14 metres. 
— 1870—1892 in all about 17 metres: yearly average about 1 metre. 
Note that the discrepancies between the three telegraphic determinations 
of longitude cannot very well be explained as a result of the uncertainty of 
the determinations. 
