H.J. Mackinder, Britain and the British Seas, Ethnographic map, p. 184, and p. 306. London, 1904.
W.Z. Ripley, Races of Europe, pp. 22, 23, 150-151. New York, 1899.
Ibid., pp. 248, 258, 272.
Ibid., pp. 247, 273.
Ibid., pp. 403-409, and map.
F. Brinkley, Japan, Vol. I, pp. 38-42, 70, 75-80, 83-84, 126. Boston and Tokyo, 1901. W.E. Griffis, The Mikado's Empire, Vol. I, pp. 73, 83. New York, 1903.
Henry Dyer, Dai Nippon, pp. 59, 69. New York, 1904.
E.A. Freeman, Historical Geography of Europe, p. 558. London, 1882.
Ibid., pp. 559, 561. Gibbon, Decline and Fall of the Roman Empire, Vol. V, p. 248. New York, 1858.