[5] Die Soziale Verfassung des Inkareichs. Stuttgart, 1896, p. 51.

[6] Siedlung und Agrarwesen der Westgermanen, etc. Berlin, 1895, I, p. 273.

[7] l. c. I, p. 138.

[8] Ratzel, l. c. I, p. 702.

[9] Ratzel, l. c. II, p. 555.

[10] Ratzel, l. c. II, p. 555.

[11] For example with the Ovambo according to Ratzel, l. c. II, p. 214, who in part “seem to be found in slavelike status,” and according to Laveleye among the ancient Irish (Fuidhirs).

[12] Ratzel, l. c. I, p. 648.

[13] Ratzel, l. c. II, p. 99.