416 



GEOLOGY. 



LEGEND 



re 

 Meters 



Depths are 

 Iven in 



Sea Level to 2O0M 

 200Mtol00OM 



deb 



over loooM 



Balhy metrical Chart 



of 



NORTH POLAR 

 SEAS 



fy Fridtjof Nansert 



Fig. 190. — Bathymetric chart of the north polar seas, suggesting routes of migration 

 for marine organisms. (After Nansen.) 



