“ The development of this plan and the connection of the library with the museum was the work of Ptolemy II., Philadelphus, about 275 B.C., who collected books on a hitherto unknown scale and placed them at the disposal of the learned men gathered in the museum. The management was intrusted to a series of scholars, whose labors led them to a careful study of Greek literary history and the classification of writers, with results of great importance for the transmission of classical texts to our own time. ”

“ The first librarian was Zenodotus of Ephesus, under whom the poets were arranged. The first catalogue seems to have been the work of Callimachus, and included a classification of the authors, according to their principal themes, as historians, orators, etc. ”