Narrative of an Expedition Through the Upper Mississippi to Itasca Lake, the Actual Source of This River / Embracing an Exploratory Trip Through the St. Croix and Burntwood (or Broule) Rivers

by Henry Rowe Schoolcraft

BY WILLIAM COOPER.

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HELIX.

1. Helix albolabris, Say. Near Lake Michigan.

2. Helix alternata, Say. Banks of the Wabash, near and above the Tippecanoe. Mr. Say remarks, that these two species, so common in the Atlantic states, were not met with in Major Long’s second expedition, until their arrival in the secondary country at the eastern extremity of Lake Superior.

PLANORBIS.

3. Planorbis campanulatus, Say. Itasca (or La Biche) Lake, the source of the Mississippi.

4. Planorbis trivolvis, Say. Lake Michigan. These two species were also observed by Mr. Say, as far east as the Falls of Niagara.

LYMNEUS.

5. Lymneus umbrosus, Say. Am. Con. iv. pl. xxxi. fig. 1. Lake Winnipec, Upper Mississippi, and Rainy Lake.