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

[489] Bogoras, II, 307 ff.

[490] Egede, pp. 131 ff.

[491] Holm, 10, 142, and 39, 106 and 85.

[492] Schiefner, p. 204.

[493] Swanton, p. 427.

[494] Carver, p. 253.

[495] Heckewelder, p. 527.

[496] Fletcher and La Flesche, p. 110.

[497] Gatschett, p. 666.

[498] Dorsey and Swanton, p. 203.