88 POLAR PROBLEMS 



animals, not less important from the theoretical point of view, have 

 received less attention. The vertical and horizontal distribution of 

 different species is particularly important and must be carefully 

 checked. 



1 1 , The outcrops of ground ice should be examined and described 

 in detail. Special attention must be paid to the relation of the ice 

 layer to other formations, as well as to the topography of the locality. 

 The question of the origin of ground ice still awaits an acceptable 

 answer. 



November, 1026 



