spent by the Greek fleets in cruising about the Ægean, doing the work of liberation. At first Spartan admirals were in command, but the Ionians disliked Dorian discipline, and Pausanias, the victor of Platæa, was puffed up with pride and power. So they turned to Athens, whose commanders were Kimon, the rich and generous son of Miltiades, Aristeides the Just, and Xanthippus, the father of Pericles, all men of the aristocracy, but loyal servants of Athens and capable seamen. Thus they formed the Confederacy of Delos, a league of maritime states, Ionians who worshipped the Delian Apollo. On his sacred island was to be the treasury of the league, and there the common synods were to meet. This league Athens soon transformed into an empire. From the first some of its members were too poor to supply the normal unit of subscription, the trireme galley. These, then, contributed money on the assessment of Aristeides.