IV DEPTHS AND DEPOSITS OF THE OCEAN 209 



the depth and steepness of the sounds between the Faroe Islands, the 

 great depth at which the seaward extension of the fjords in Iceland cut 

 the marine shelf, the submergence of shell banks between Iceland and 

 Jan Mayen referred to by Nansen, all point to the same conclusion. In 

 all probability there was either land connection with Greenland during 

 the glacial period, or a confluent ice barrier which prevented the Gulf 

 Stream from flowing into the Polar basin and deflected it towards 

 the south. 



J. M. 



Hooke's Sounding Machine and Water-Bottle, 1667. 

 (See page 2. ) 



