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Lake Huron, the river St. Clair; and betweeil 

 Lake Huron and Lake Superior, the distance 

 is called the Narrows, or the Falls of St. Mary, 

 forming thus an uninterrupted connection of 

 2000 miles. Lake Superior, without the aid 

 of any great effort of imagination, may be con- 

 sidered as the inexhaustible spring from whence, 

 through unnumbered ages, the St. Lawrence 

 has continued to derive its ample stream. I am 

 not aware that the source of this river has thus 

 been defined before ; but examining the usual 

 mode of tracing large rivers from their heads 

 to their estuaries^ 1 venture to believe that I 

 am warranted in adopting the hypothesis. 

 This immense lake^ unequalled in magnitude 

 by any collection of fresh water upon the 

 globe, is almost of a triangular form ; its 

 greatest length is 381, its breadth l6l, and 

 its circumference little less than 1152 miles; 

 and as remarkable for the unrivalled trans- 

 parency of its waters, as for its extraordinary 

 depth. Its northern coast, indented with 

 many extensive bays, is high and rocky ; but 

 on the southern shore the land is generally 

 low and level ; a sea almost of itself, it is 

 subject to many vicissitudes of that element, 

 for here the storm rages, and the billows 

 break with a violence scarcely surpassed by 

 the tempests of the ocean. In the distant 



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