Note 185 — Chapter IV · MEXICAN HIEROGLYPHICS—MANUSCRIPTS—ARITHMETIC—CHRONOLOGY—ASTRONOMY
Reading edition
This length, as computed by Zach, at 365d. 5h. 48m. 48sec., is only 2m. 9sec. longer than the Mexican; which corresponds with the celebrated calculation of the astronomers of the Caliph Almamon, that fell short about two minutes of the true time. See La Place, Exposition, p. 350.