History of the Peloponnesian War

Against this town then Brasidas marched with his forces, starting from Arnae in Chalcidice. Having arrived about dusk at Aulon and Bromiscus, where the lake Bolbe empties itself into the sea, and there supped, he proceeded during the night. The weather was stormy, and it was snowing a little;

on which account he hurried or the more, wishing to surprise the people of Amphipolis, except those who were to betray it.

For there were residing in it some Argilians, (this people are a colony from Andros,) and some others, who were carrying on this intrigue together; some at the suggestion of Perdiccas, others at that of the Chalcidians.