CHAPTER VII.
Prairies in Minnesota and Iowa. — Boulders. — Glacial Drift. — Wild Rice. — Snow Storm. — Nebraska. — The Pawnees. — Human Sacrifices. — Note on Indian Customs in War and Cannibalism. — Prairie Fires. — Prairie-Dog Villages. — Rattlesnakes. — Variations in the succession of growths of Trees. — Causes of absence of Trees upon Prairies. — Shoshone Indians on the Western Deserts. — Note upon Ute Indians and Fuegians 124