Note 630 — Chapter VI · LUNAR CALENDARS AND THE WEEK

A. Cabaton, in Hastings’s Encyclopædia of Religion and Ethics, iii, 113, 345, 450. On the other hand a week of seven days, found in central Asia, has been borrowed from Persia, as its name hafta from the Persian heft, “seven,” indicates (H. Vámbéry, Die primitive Cultur des turko-tatarischen Volkes, Leipzig, 1879, p. 160). In northern Asia, again, the Russian advance has begun to lead to the use of the seven-day week by native tribes, such as the Yukaghir of northeastern Siberia (W. Jochelson, in Memoirs of the American Museum of Natural History, xiii, 42).