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A HISTORY OF MATHEMATICAL NOTATIONS
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bearing beads, etc., to indicate the days. It is simply a string record. This is known from the Yakima of eastern Washington and some Interior Salish group of Nicola Valley,[1] B.C.
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Fig. 16.—A quipu, from ancient Chancay in Peru, now kept in the American Museum of Natural History (Museum No. B8713) in New York City.
- ↑ J. D. Leechman and M. R. Harrington, String Records of the Northwest, Indian Notes and Monographs (1921).
