Nevertheless, there are frequent cases in which the end of a play depends on something very like the unravelling of a tangled skein; and still more often, perhaps, is it brought about through the loosening of some knot in the mind of one or more of the characters. This was the characteristic end of the old comedy. The heavy father, or cantankerous guardian, who for four acts and a half had stood between the lovers, suddenly changed his mind, and all was well. Even by our ancestors this was reckoned a rather too simple method of disentanglement. Lisideius, in Dryden's dialogue,[[99]] in enumerating the points in which the French drama is superior to the English notes that--

You never see any of their plays end with a conversion, or simple

change of will, which is the ordinary way which our poets use to end

theirs. It shew little art in the conclusion of a dramatick poem,

when they who have hindered the felicity during the four acts,

desist from it in the fifth, without some powerful cause to take

them off their design.

The remark of Lisideius is suggested by a passage in Corneille, who instances, as an apt and artistic method of bringing about the conversion of a heavy father, that his daughter's lover should earn his gratitude by rescuing him from assassination!

Conversions, closely examined, will be found to fall into two classes: changes in volition, and changes in sentiment. It was the former class that Dryden had in mind; and, with reference to this class, the principle he indicates remains a sound one. A change of resolve should never be due to a mere lapse of time--to the necessity for bringing the curtain down and letting the audience go home. It must always be rendered plausible by some new fact or new motive: some hitherto untried appeal to reason or emotion. This rule, however, is too obvious to require enforcement. It was not quite superfluous so long as the old convention of comedy endured. For a century and a half after Dryden's time, hard-hearted parents were apt to withdraw their opposition to their children's "felicity" for no better reason than that the fifth act was drawing to a close. But this formula is practically obsolete. Changes of will, on the modern stage, are not always adequately motived; but that is because of individual inexpertness, not because of any failure to recognize theoretically the necessity for adequate motivation.

Changes of sentiment are much more important and more difficult to handle. A change of will can always manifest itself in action but it is very difficult to externalize convincingly a mere change of heart. When the conclusion of a play hinges (as it frequently does) on a conversion of this nature, it becomes a matter of the first moment that it should not merely be asserted, but proved. Many a promising play has gone wrong because of the author's neglect, or inability, to comply with this condition.