Influences of Geographic Environment / On the Basis of Ratzel's System of Anthropo-Geography

by Ellen Churchill Semple

Schoolcraft, The Indian Tribes of the United States, Vol. I, pp. 198-200, 224. Philadelphia, 1853.

Ibid., Vol. I, pp. 231-232, 241.

Roosevelt, The Winning of the West, Vol. I, pp. 70-73, 88. New York, 1895.

McGee and Thomas, Prehistoric North America, pp. 392-393, 408, Vol. XIX, of History of North America, edited by Francis W. Thorpe, Philadelphia, 1905. Eleventh Census Report on the Indians, p. 51. Washington, 1894.

Hans Helmolt, History of the World, Vol. II, pp. 249-250. New York, 1902-1906.

Spencer and Gillen, Northern Tribes of Central Australia, pp. 13-15. London, 1904.

Ratzel, History of Mankind, Vol. I, p. 126. London, 1896-1898.

Roscher, National-Oekonomik des Ackerbaues, p. 24. Stuttgart, 1888.

Ratzel, History of Mankind, Vol. I, p. 131. London, 1896-1898.

Paul Ehrenreich, Die Einteilung und Verbreitung der Völkerstämme Brasiliens, Peterman's Geographische Mittheilungen, Vol. XXXVII, p. 85. Gotha, 1891.