Philadelphus (285–247), whose librarian was the celebrated Callimachus, bought up all Aristotle's collection of books, and also introduced a number of Jewish and Egyptian works. Among these appears to have been a portion of the Septuagint. Euergetes (247–222) increased the library by seizing on the original editions of the dramatists from the Athenian archives, and by compelling all travellers who arrived in Alexandria to leave a copy of any work they possessed.[2]