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

by Ellen Churchill Semple

Tacitus, Germania, III.

Roscher, National-Oekonomik des Ackerbaues, p. 32, Note 15 on p. 36. Stuttgart, 1888.

E. Huntington, The Pulse of Asia, pp. 202, 203, 212, 213, 236-237. Boston, 1907.

Sheldon Jackson, Introduction of Domesticated Reindeer into Alaska, pp. 20, 25-29, 127-129. Washington, 1894.

Quoted in Alexander von Humboldt, Aspects of Nature in Different Lands, pp. 62, 139. Philadelphia, 1849.

Edward John Payne, History of the New World Called America, Vol. I, pp. 311-321. 333-354, 364-366. New York, 1892.

Prescott, Conquest of Peru, Vol. I, p. 47. New York, 1848.

McGee and Thomas, Prehistoric North America, Vol. XIX, pp. 151-161, of The History of North America, edited by Francis W. Thorpe, Philadelphia, 1905.

Ratzel, Anthropo-geographie, Vol. II, pp. 264-265.

Malthus, Principles of Population, Chapters V and VII. London, 1878.