Apollonius of Rhodes
After Zenodotus either died or retired, Ptolemy II Philadelphus appointed Apollonius of Rhodes (lived 295– 215 BC), a native of Alexandria and a student of Callimachus, as the second head librarian of the Library of Alexandria. Philadelphus also appointed Apollonius of Rhodes as the tutor to his son, the future Ptolemy III Euergetes. Apollonius of Rhodes is best known as the author of the "Argonautica", an epic poem about the voyages of Jason and the Argonauts, which has survived to the present in its complete form. The "Argonautica" displays Apollonius's vast knowledge of history and literature and makes allusions to a vast array of events and texts, while simultaneously imitating the style of the Homeric poems. Some fragments of his scholarly writings have also survived, but he is generally more famous today as a poet than as a scholar.