[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 raeumliche 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.