Summary Narrative of an Exploratory Expedition to the Sources of the Mississippi River, in 1820 Resumed and Completed, by the Discovery of its Origin in Itasca Lake, in 1832

CHAPTER XI.

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Physical traits of the Mississippi--The elevation of its sources--Its velocity and mean descent--Etymology of the name Mississippi--Descent of the river to Sandy Lake, and thence to the Falls of St. Anthony--Recross the great Bitobi Savanna--Pakagama formation--Description of the voyage from Sandy Lake to Pine River--Brief notices of the natural history 137