History of the Peloponnesian War

Now the Megareans that were in the city (when the Athenians also were gone home), all that had chief hand in the practice with the Athenians, knowing themselves discovered, presently slipt away; but the rest, after they had conferred with the friends of the outlaws, recalled them from Pegae, upon great oaths administered unto them no more to remember former quarrels, but to give the city their best advice.

These, when they came into office, took a view of the arms, and disposing bands of soldiers in divers quarters of the city, picked out of their enemies and of those that seemed most to have co-operated in the treason with the Athenians, about a hundred persons; and having constrained the people to give their sentence upon them openly, when they were condemned slew them, and established in the city the estate almost of an oligarchy.

And this change of government, made by a few upon sedition, did nevertheless continue for a long time after.

The same summer, when Antandros was to be furnished by the Mytilenaeans as they intended, Demodicus and Aristides, captains of certain galleys set forth by the Athenians to fetch in tribute, being then about Hellespont (for Lamachus that was the third in that commission, was gone with ten galleys into Pontus), having notice of the preparation made in that place, and thinking it would be dangerous to have it happen there as it had done in Anaea over against Samos, in which the Samian outlaws having settled themselves, aided the Peloponnesians in matters of the sea by sending them steersmen, and both bred trouble within the city and entertained such as fled out of it, levied an army amongst the confederates, and marched to it; and having overcome in fight those that came out of Antandros against them, recovered the place again.

And not long after, Lamachus that was gone into Pontus, as he lay at anchor in the river Calex in the territory of Heracleia, much rain having fallen above in the country and the stream of a land flood coming suddenly down, lost all his galleys and came himself and his army through the territory of the Bithynians (who are Thracians dwelling in Asia on the other side) to Chalcedon, a colony of the Megareans in the mouth of Pontus Euxinus, by land.