¹ The argument from the fact that εἰς would be written E C till 403 B. C. of course involves the be-setting confusion of signs and sounds. Whatever Aristophanes wrote, he and his contemporaries pronounced according to knowledge, and it is not to be supposed that only one MS. of his play—the original—was in existence till the sounds intended by his letters were forgotten. It is, besides, pure assumption that before 403 B.C. everything was written in the old alphabet.