er, The Significance of the Frontier in American
History, in the _Annual Report of the American Historical Association_
for 1893, pp. 199-227. Washington, 1894.

[258] Hugh R. Mill, International Geography, pp. 150-152. New York,
1902.

[259] W.E. Griffis, The Mikado's Empire, Vol. I, pp. 75, 83. New York,
1903. Henry Dyer, Dai Nippon, pp. 59, 69. New York, 1904.

[260] Norway, Official Publication, pp. 4, 83, 99, and map. Christiania,
1900.

[261] D.G. Hogarth, The Nearer East, pp. 221-224, map. London, 1902.

[262] Heinrich von Treitschke, _Politik_, Vol. I, p. 224. Leipzig, 1897.

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

[264] Eleventh Census, _Report on the Indians_, pp. 36-37. Washington,
1894.

[265] John Fiske, Old Virginia and her Neighbors, Vol. II, p. 299.
Boston, 1897.

[266] Eleventh Census, _Report on the Indians_, pp. 30-31. Washington,
1894.

[267] Dr. William Junker, Travels in Africa, 1882-1886, pp. 30, 31, 34,
37, 44, 50-54, 64, 94-95, 140, 145-148. London, 1892.

[268] Ratzel, History of Mankind, Vol. III, pp. 193-195. London,
1896-1898.

[269] Anatole Leroy-Beaulieu, Empire of the Tsars, Vol. I, pp. 124-129.
Hew York, 1893.

[270] D.G. Brinton, The American Race, p. 266. Philadelphia, 1901.

[271] Helmolt, History of the World, Vol. III, pp. 484, 485. New York,
1902-06.

[272] Nordenskiold, The Voyage of the Vega, p. 291. New York, 1882.

[273] H.M. Stanley, Through the Dark Continent, Vol. II, pp. 100-103,
218. In Darkest Africa, Vol. I, pp. 208, 261, 374-375; Vol. II, pp.
40-44.

[274] Georg Schweinfurth, The Heart of Africa, Vol. II, chap. XI, 3rd
edition, London.

[275] Census of the Philippine Islands, Vol. I, pp. 411, 436, 532, 533.
Washington, 1903.

[276] Quatrefages, The Pygmies, pp. 24-51. New York, 1895.

[277] Sir T.H. Holdich, India, pp. 202-203, map. London, 1905.

[278] Darwin, Origin of Species, Vol. II, chap. XII. New York, 1895.

[279] Anatole Leroy-Beaulieu, The Empire of the Tsars, Vol. I, pp.
66-70, maps facing pp. 64 and 80. New York, 1893.

[280] Eleventh Census of the United States, _Report on Population_, Part
I, map p. 23. Washington, 1894.

[281] W.Z. Ripley, Races of Europe, Chapters 7, 8, 11. New York, 1899.

[282] H.R. Mill, International Geography, p. 910. New York, 1902.

[283] _Ibid._, pp. 832, 836.

[284] Ratzel, History of Mankind, Vol. III, pp. 175, 257. London,
1896-1898.

[285] E.C. Sem