PACK-ICE. 



139 



FLOATING ICE. 



rated with the new ice of the succeeding winter ; 

 and not unfrequeiitly whale and discovery ships get 

 frozen into the pack, and remain there as firmly 

 embedded as if they lay high and dry on land. 

 When the pack is thus re-frozen, it usually remains 

 stationary ; but there are occasions and circum- 

 stances in which the entire body of a pack drifts 

 slowly southward even during the whole year; 

 showing clearly that oceanic circulation is by no 



