At once the most comprehensive and detailed history of ancient astronomy undertaken. From Meton of Athens in the fifth century B.C. and the unnamed scribes of Babylon, through Hipparchus and Ptolemy, to the shadowy figures of Olympiodorus and Stephanus in the early period of the Byzantine Empire, from primitive shadow tables and calendars of star phases, through Babylonian ephemerides and the Almagest, to the odd fragments preserved in late astrologers, the entire panorama of astronomy is set forth.