0. E. SCHI0TZ. 



[NORW. POL. EXP. 



During the expedition, the observations were made by Lieut. Scott- 

 Hansen. Only one determination was made on shore, namely at Khabarova, 

 at the mouth of the Kara Sea, all other observations being carried out 

 while drifting with the ice. With the exception of the summer of 1895, when 

 on the 8th, 10th and llth June, the pendulum apparatus was set up on the 

 ice near the vessel, all the observations were taken on board in the winter. 

 The pendulum apparatus was set up on the iron cross belonging to it, with 

 nothing between it and the solid floor of the saloon, near one long wall; 

 while the coincidence apparatus was placed opposite to it, near the opposite wall, 

 with an underlayer of folios. During the experiments, the observer had to 



lie upon the floor parallel with the wall, and observe the greatest caution all 

 the time in his movements ; but the floor was so steady, that the level on the 

 pendulum apparatus moved only very slightly when any one went close up 

 to the apparatus. The observations were taken in the middle of the night, 

 when no one but the observer was up, so that the apparatus was not exposed 

 to any chance of disturbance. All the apparatuses were invariably set up very 

 nearly on the same spots. Their situation will be seen from the accompa- 

 nying sketch. 



