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

by Ellen Churchill Semple

Journey of William de Rubruquis, pp. 18-27, Hakluyt Society, London, 1900.

Jerome Dowd, The Negro Races, Vol. I, pp. 225-232. New York, 1907.

Sir Francis Younghusband, The Heart of a Continent, pp. 85-98. London, 1904.

Ratzel, History of Mankind, Vol. I, p. 170. London, 1896-1898.

Heinrich Barth, Travels in North and Central Africa, Vol. I, pp. 148, 152, 204, 210, 303. New York, 1857.

J.L. Burckhardt, Notes on the Bedouins and Wahabys, Vol. I, pp. 115-119, 284-286, 296-300. London, 1831.

Gibbon, Decline and Fall of the Roman Empire, Vol. V, pp. 85-87. New York, 1857.

Jerome Dowd, The Negro Races, Vol. I, pp. 234-235. New York,1907.

Vambery, Reise in Mittel Asien, pp. 288-290. Leipzig, 1873.

James Bryce, Impressions of South Africa, pp. 108, 128, 129, 155, 199, 452-453. New York, 1897.