History of the Peloponnesian War

Whereupon Agis, their king, went out with a part of his army the same winter from Deceleia and levied money amongst the confederates for the building of a navy; and turning into the Melian gulf, upon an old grudge took a great booty from the Oetaeans, which he made money of, and forced those of Pthiotis, being Achaians, and others in those parts subjects to the Thessalians (the Thessalians complaining and unwilling) to give them hostages and money. The hostages he put into Corinth, and endeavoured to draw them into the league.

And the Lacedaemonians imposed upon the states confederate, the charge of building one hundred galleys; that is to say, on their own state and on the Boeotians, each twenty-five; on the Phoceans and Locrians, fifteen; on the Corinthians, fifteen; on the Arcadians, Sicyonians, and Pellenians, ten; and on the Megareans, Troezenians, and Hermionians, ten. And put all things else in readiness presently with the spring to begin the war.