Primitive Time-reckoning / A study in the origins and first development of the art of counting time among the primitive and early culture peoples

by Martin P. Nilsson

[509] Arcin, p. 394.

[510] Weeks, Bakongo, pp. 293 ff.

[511] Weeks, JRAI, 39, pp. 417 ff.

[512] Westermann, p. 104.

[513] Claus, p. 39.

[514] Junod, Thonga, II, 285.

[515] Loango Exp., III: 2, pp. 135 ff.

[516] Schulze, pp. 367 ff.

[517] Bleek, p. 108.

[518] Rivers, pp. 593 ff.