46 



GEOIvOGY OF LA SAI^I^E COUNTY. 



ited; third, a part of the ocean, the Trenton period; 

 fourth, for a long- period dry land; fifth, a reg"ion of 

 forests, swamps and lagoons, with many sudden and 

 extensive changes, the Carbonic age; sixth, dry land 

 for ages; seventh, a desolate w^asteof ice and snow, a 

 polar desolation; eighth, the country much as we know^ 

 it today. 



The vast collection of granitic and hornblendyte 

 rocks in the west part of this cit}^ are also products of 

 glacial times. These rocks, it will be observed, form 

 a train running from about north, northeast to south, 

 southwest. It is formed of a great variety of mate- 

 rial, consequently the fragments of which it is com- 

 posed came from different localities, some of them 

 from the south shore of lake Superior, and w^ere, no 

 doubt, either frozen into the glacier or borne as 

 morainic material upon its surface. Their presence 

 indicates that there a fragment of the glacier melted 

 and discharged its burden, wrote its autograph indel- 

 ibly on'the face of our country. Other such trains are 

 found in various places, and all have the same lineage 

 and history — a romantic story could we but read it 

 aright, a wonderful tale, more strange than the 

 wildest vision that a feverish imagination has ever 

 dreamed. 



