344 DRIFT ICE AS AN ERODING AND TRANSPORTING AGENT PREST. 



regions. The narrow channels through which the water flows 

 from the north and northwest have been gradually getting 

 shallower and narrower, and should the present elevating process 

 continue the force and bulk of this current must be greatly 

 lessened, if not altogether extinguished. 



There is much room for investigation in this subject ; but 

 circumstances compel me to leave to my more professional 

 brethren the work of proving or disproving fully the conclusions 

 I have arrived at. 



