The next play of Dryden's which it is necessary to notice here might have ranked among his masterpieces if it had been entirely or even principally his own. It is sufficient praise for him to have followed Plautus and Molière with no unequal steps, and while borrowing, as he could not help, the substance of his piece from them, to have enriched their groundwork with original conceptions of his own. The plot of _Amphitryon_ may be considered common property. A better subject for the comic theatre cannot be conceived than the equivocations occasioned by Jupiter's assumption of Amphitryon's appearance, doubled, and, as it were, parodied over again by the comic poet's happy thought of introducing Mercury in the disguise of Amphitryon's valet. It is surprising that the theme should not have attracted the best poets of the Athenian Middle Comedy. So far as we know, however, it was only treated by a single author, and he not one of the highest reputation, Archippus. How far Plautus translated Archippus must remain a question, but considering that the Greek play attained no especial reputation, while the Latin is one of the best we have, it is only fair to give Plautus credit for having introduced a good deal of his own. His comedy has unfortunately reached us in a mutilated condition, wanting, probably, not less than three hundred verses in the fourth act, but enough remains to show how the action was conducted. Molière, the greatest of comic poets, could not fail to improve upon his model. The substance of the piece admitted of no material alteration, but Molière has greatly enriched and embellished it--first by the happy idea of the prologue between Mercury and Night, for which, however, he is as much indebted to Lucian as he is to Plautus for the rest--and even more by the amusing scene between Sosia and Cleanthis. His play, unlike most of his other performances, is written in a lyrical metre, and the language is a model of elegance, harmony, and polish. Dryden, writing in prose or negligent blank verse, could not rival Molière in this respect; but while losing nothing of the _vis comica_ of either of his predecessors, he has heightened the humour of the piece by a still further elaboration of the hints given by Molière. He was himself well acquainted with Lucian, from whom he has borrowed several additional strokes; and he has doubled the entertainment of the situation between Sosia and Cleanthis by the creation of Phædra, whose intrigue with Mercury makes the comedy of errors absolutely complete. We have now to consider the two plays of Dryden's on which his fame as a dramatist principally rests, and which, if in some respects less interesting than his other dramatic writings, as less intensely characteristic of the man and his age, are for that very reason better equipped for competition for a place among the dramas of all time.