They first seized a small fortress on the frontier of Attica, when, their numbers rapidly increasing, they were able to seize the Piræus, where they entrenched themselves and defeated the force that was brought against them, killing, among others, Cri'ti-as, the chief of the tyrants. The loss of Critias threw the majority into the hands of a party who resolved to depose the Thirty and constitute a new oligarchy of Ten. The rule of the Thirty was overthrown; but the change in government was simply a reduction in the number of tyrants, as the Ten emulated the wickedness of their predecessors, and when the populace turned against them, applied to Sparta for assistance. Lysander again entered Athens at the head of a large force; but the Spartan councils became divided, Lysander was deposed from command, and eventually, by the aid of Sparta herself, the Ten were overthrown. The Spartans now withdrew their forces from Attica, and Athens again became a democracy (403 B.C.). Freed from foreign domination, she soon obtained internal peace; but her empire had vanished. CHAPTER XII. GRECIAN LITERATURE AND ART I FROM THE BEGINNING OF THE PERSIAN TO THE CLOSE OF THE PELOPONNESIAN WARS. (500-403 B.C.) LITERATURE. In a former chapter we briefly traced the growth of Grecian literature and art from their beginnings down to the time of the Persian wars. Within this period, as we noticed, their progress was the greatest in the Grecian colonies, while, of the cities of central Greece, the one destined to become pre-eminent in literature and the fine arts--Athens--contributed less than several others to intellectual advancement. "She produced no artists to be compared with those of Argos, Corinth, Si'cy-on, and of many other cities, while she could boast of no poets as celebrated as those of the Ionian and Æolian schools." But at the opening of the Persian wars the artistic and literary talent of Greece began to center in Athens, and with the close of that contest properly begins the era of Athenian greatness. Athens, hitherto inferior in magnitude and political importance, having borne the brunt and won the highest martial honor of the conflict with Persia, now took the lead, as well in intellectual progress as in political ascendancy. To this era PROFESSOR SYMONDS refers, as follows: