THE NORTH PART OF ST. LOUIS COUNTY, 1899. N. H. WINCHELL. 



* 



named lake Norwood, from Dr. J. GK Norwood, the first geologist who gave a descrip- 

 tion of this route to Vermilion lake.* 



The Vermilion moraine seems to have marked the southern limit of the northern 

 ice for a comparatively short period of time, and from it the ice margin apparently 

 retreated rapidly, leaving but a slight drift sheet, the country toward the northeast 

 being one which Nicollet designated one " of rocks and water." 



In the area of this plate are the great iron mining developments of the state, 

 viz., on the Vermilion Iron range at Tower and Ely, and on the Mesabi Iron range. 

 The geology of the rocks and of the iron industry must be learned from volumes iv 

 and v, as there is not space here even to give it in abstract. N. H. w. 



'Geological report of a survey of Iowa, Wisconsin and Minnesota. D. D. OWEN, 1847-1850, pp. 311-314. 



