[60] Westermarck, l. c., p. 546.
[61] Cf. Ratzel, l. c. I, pp. 318, 540.
[62] Ratzel, l. c. I, p. 106.
[63] Ratzel, l. c. I, p. 335.
[64] Ratzel, l. c. I, p. 346.
[65] Ratzel, l. c. I, p. 347.
[66] Buecher, Entstehung der Volkswirtschaft, Second Edition, Tübingen, 1898, p. 301.
[67] Cf., Ratzel, l. c. I, p. 271, speaking of the islanders of the Pacific Ocean: “Intercourse from tribe to tribe is carried on by inviolable heralds, preferably old women. These act also as intermediary agents in trades.” See also page 317 for the same practises among the Australians.
[68] German Translation by L. Katscher. Leipzig, 1907.
[69] Ratzel, l. c. I, p. 81.