This edition is in part a new work, and partly a revised and expanded version of the Pitt Press edition by J.M. MacGregor (Cambridge University Press, 1915). The Introduction is based on MacGregor's, revised and with an additional sections on Olynthos and the Chalcidian League, and Demosthenes' oratory. There is a also a new bibliography. The Greek text follows, along with a completely new commentary by E.I. McQueen, concentrating mainly on questions of grammar and syntax. The two Appendixes, on the Order of the Olynthiac Speeches and the Theoric Fund, have been completely rewritten to take account of modern scholarship.