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

by Ellen Churchill Semple

E.F. Knight, Where Three Empires Meet, p. 218. London, 1897.

W.W. Rockhill, The Land of the Lamas, p. 212. New York, 1891.

G.A. Sherring, Western Tibet and the British Borderland, p. 188. London, 1906.

Westermarck, History of Human Marriage, pp. 451, 452. London, 1891.

Strabo, Book XVI, chap. IV, 25.

For authorities, see Westermarck, History of Human Marriage, pp. 452-455. London, 1891. McLennan, Primitive Marriage, pp. 178-179, 184-189. Edinburgh, 1865. G.A. Sherring, Western Tibet and the British Borderland, pp. 14, 15, 88-89, 177, 305. London, 1906.

Spencer, Principles of Sociology, Vol. 1, pp. 646-649. New York, 1887.

W.H.R. Rivers, The Todas, incorporated in W. I. Thomas' Source Book for Social Origins, pp. 485-486. Chicago, 1909.

Westermarck, History of Human Marriage, p. 463. London, 1891.

Sir Thomas Holdich, India, pp. 216, 217. London, 1905.