Note 56 — Chapter III

For Mexican astronomy, in addition to the studies of the codices, see Sahagun, bk. vii; Tezozomoc, lxxxii; Seler, 28 BBE, "The Venus Period in the Picture Writings of the Borgian Codex Group" (tr. from art. in Berliner Gesellschaft für Anthropologie, Ethnologie und Urgeschichte, 1898); Hagar [a], [b]; Chavero [b]; and Nuttall [a], especially pp. 245-59. On the question of the zodiac, advocated by Hagar, see H. J. Spinden, "The Question of the Zodiac in America," in AA, new series, xviii (1916), and the bibliography there given.