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PHYSIOGRAPHY 



Area. Lake Superior, Lake Huron, Lake Michigan, Lake Erie, 

 and Lake Ontario are examples of great lakes. Taken altogether, 

 these five lakes have an area of nearly 95,000 square miles. Five 



Fig. 148. Lakes on the coast of New Jersey. The expanded part of Shark 

 River is virtually a lake. 



of the great lakes of the Dominion of Canada have an area of more 

 than 32,000 square miles. No other continent has so many lakes 

 of such great size. Lakes but a few square miles in extent are far 

 more numerous than larger ones. 



Altitude. Lakes have a great range in altitude, though most 

 large lakes are but a few hundred feet above the sea. The Yellow- 



