 The "Third Philippic", for instance, contains text which does not appear in all of the manuscript traditions; it has been suggested that this was a later addition by another writer.Finally, one of the works which was transmitted as part of the Demosthenic corpus makes no claim to have been written by Demosthenes.This is number 12, the "Epistle of Philip", which claims to be the letter from Philip of Macedon to the people of Athens to which Demosthenes 11, the "Reply to Philip", is a response.