The Euthydemus, though apt to be regarded by us only as an elaborate jest, has also a very serious purpose. It may fairly claim to be the oldest treatise on logic; for that science originates in the misunderstandings which necessarily accompany the first efforts of speculation. Several of the fallacies which are satirized in it reappear in the Sophistici Elenchi of Aristotle and are retained at the end of our manuals of logic. But if the order of history were followed, they should be placed not

PERSONS OF THE DIALOGUE: Socrates, who is the narrator of the Dialogue. Crito, Cleinias, Euthydemus, Dionysodorus, Ctesippus. SCENE: The Lyceum. CRITO: Who was the person, Socrates, with whom you were talking yesterday at the Lyceum? There was such a crowd around you that I could not get within hearing, but I caught a sight of him over their heads, and I made out, as I thought, that he was a stranger with whom you were talking: who was he? SOCRATES: There were two, Crito; which of them do you me