These speeches were delivered on the occasion of Aeschines' prosecution of Ctesiphon, which was in fact a pretext to attack Demosthenes and the politics he had supported during the war against Macedonia. With his defence speech Demosthenes won the trial.
Citation:
Bouchard, Elsa. "Aeschines' Against Ctesiphon and Demosthenes' On the Crown".
The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=11288, accessed 21 May 2013.]