Euripides introduces the story of Orestes into three of his tragedies, which were written at different times, and on no common plan; but they, nevertheless, follow the same general manner of treating the subject. Sophocles had apparently felt that he coxild best introduce novelty into the treatment of a subject already dramatized by the master hand of Æschylus, by bringing into prominence the sufferings of Electra, and her delivery by her brother Orestes. Euripides followed the same idea, and went farther.