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

by Ellen Churchill Semple

Eleventh Census of the United States, Report on Population, Part I, map p. 23. Washington, 1894.

W.Z. Ripley, Races of Europe, Chapters 7, 8, 11. New York, 1899.

H.R. Mill, International Geography, p. 910. New York, 1902.

Ibid., pp. 832, 836.

Ratzel, History of Mankind, Vol. III, pp. 175, 257. London, 1896-1898.

E.C. Semple, American History and its Geographic Conditions, pp. 280-287. Boston, 1903.

C.E. Akers, History of South America, 1854-1894, pp. 501-502, 556-562. New York, 1904.

E.A. Freeman, Historical Geography of Europe, p. 14. London, 1882.

Helmolt, History of the World, Vol. VI, pp. 125-132, map. New York, 1902-1906. Ripley, Races of Europe, pp. 274, 297, 308, 472-473. New York, 1899.

H.J. Mackinder, Britain and the British Seas, pp. 183-191. London, 1904.