Meanwhile the betrayal of Boeotia into the hands of Hippocrates and Demosthenes, the1
Athenian generals, was on the eve of accomplishment. At the beginning of the ensuing winter Demosthenes and his fleet were to appear at Siphae, and Hippocrates simultaneously to march upon Delium. But there was a mistake about the day, and Demosthenes, with his Acarnanian and numerous other allies drawn from that neighbourhood, sailed to Siphae too soon. His attempt failed; for the plot was betrayed by Nicomachus a Phocian, of the town of Phanoteus, who told the Lacedaemonians, and they the Boeotians.
Whereupon there was a general levy of the Boeotians, for Hippocrates, who was to have been in the country and to have distracted their attention, had not yet arrived; and so they forestalled the Athenians by the occupation of Siphae and Chaeronea. When the conspirators in the Boeotian cities saw that there had been a mistake they made no movement from within.