London, 1896-1898.

[186] John Fiske, Discovery of America, Vol. I, pp. 316-317. Boston, 1893.

[187] Elliott Coues, History of the Lewis and Clark Expedition, Vol. I.

pp. 193-198, 203-212, 240. New York, 1893.

[188] Francis Parkman, La Salle and the Discovery of the Great West, pp.

39-40, Note 2. Boston, 1904.

[189] George G. Chisholm, Commercial Geography, pp. 56-57. London, 1904.

[190] Herodotus, Book II, 60.

[191] Encyclopaedia Britanica, Article Pilgrimages.

[192] E. Huntington, The Pulse of Asia, p. 88. Boston, 1907.

[193] Boyd Alexander, From the Niger to the Nile, Vol. II, pp. 3-7.

London, 1907.

[194] C.A. Sherring, Western Tibet and the British Borderland, pp. 3-4, 144-145, 280-284. London, 1906.

[195] Hans Helmolt, History of the World, Vol. I, pp. 189-191. Map p.

190. New York and London, 1902-1906.

[196] J.W. Powell, Map of Linguistic Stocks of American Indians, Annual Report of Bureau of Ethnology, Vol. VII.

[197] Archibald Little, The Far East, Ethnological Map, p. 8. Oxford, 1905.

[198] Census of India, 1901, General Report by H.H. Risley and E.A.

Gait, Vol. I, Part I, pp. 500-504; and Ethnographic Appendices by H.H.

Risley, Vol. I, map, p. 60. Calcutta, 1903. P. Vidal de la Blache, _Le Peuple de l'Inde, d'apres la serie des recensements_, pp. 431-434, _Annales de Geographie_, Vol. XV. Paris, 1906.

[199] Hans Helmolt, History of the World, Vol. III, pp. 422, 424, 434-436. New York, 1902-1906.

[200] D. Livingstone, Missionary Travels, pp. 97-102. New York, 1858.

[201] James Bryce, Migrations of the Races of Men Considered Historically, _Scottish Geographical Magazine_, Vol. VIII, pp. 400-421, May, 1892.

[202] Justus Perthes, _Taschen Atlas_, p. 78. Gotha, 1905.

[203] _Ibid._, p. 80.

[204] Hugh R. Mill, International Geography, p. 878. New York, 1902.

[205] Hans Helmolt, History of the World, Vol. I, pp. 189-191. New York, 1902-1906.

[206] Hodgkin, Italy and Her Invaders, Vol. VI, pp. 23-27, 38-42, 63-68, 83-87. Oxford, 1896.

[207] McGee and Thomas, Prehistoric North America, Chap. XXI, Vol. XIX of _History of North America_, Philadelphia, 1905.

[208] _Ibid._, pp. 83, 87, Map of Migrations, p. 3.

[209] Archibald Little, The Far East, pp. 34-38. Oxford, 1905.

[210] Strabo, Book VIII, chap. I, 2.

[211] Heinrich Barth, Travels in North and Central Africa, Vol. II, p.

548. New York, 1857.

[212] Joseph Partsch, Central Europe, pp. 104-105. London, 1903.

[213] E.F. im Thurn, Among the Indians of Guiana, pp. 167-171, 202-207.

London, 1883.

[214] W.Z. Ripley, Races of Europe, p. 237. New York, 1899.

[215] _Ibid._, p. 469.

[216] H. Barth, Human Society in Northern Central Africa, _Journal of the Royal Geog. Society_, Vol. XXX, p. 116. London, 1860.

[217] Moritz Wagner, _Die Entstehung der Arten durch raumliche Sonderung_. Basel, 1889.

[218] H.W. Conn, The Method of Evolution, pp. 282-295. New York, 1900.

[219] McGee and Thomas, Prehistoric North America, pp. 418, 424, Vol.

XIX of _History of North America_. Philadelphia, 1905.

[220] Ratzel, History of Mankind, Vol. II, pp. 280-283. London, 1896-1898.

[221] Caesar, _Bella Gallico_, Book II, chap. IV.

[222] H. Helmolt, History of the World, Vol. VI, pp. 32-33. New York, 1902-1906.

[223] Hodgkin, Italy and Her Invaders, Vol. I, Part I, pp. 75, 81, 82.

Oxford, 1895.

[224] W.Z. Ripley, Races of Europe, pp. 34, 341-342. New York, 1899.

[225] H. Helmolt, History of the World, Vol. III, pp. 400, 417, New York, 1902-1906.

[226] A.C. Haddon, The Study of Man, p. xix. New York and London, 1898.

[227] James Bryce, Migrations of the Races of Men Considered Historically, _Scottish Geographical Magazine_, Vol. VIII, pp. 400-421.

May, 1892.

[228] Eleventh Census, _Report on the Indians_, pp. 34-35. Washington, 1894.

[229] H. Helmolt, History of the World, Vol. III, p. 42. New York, 1902-1906.