Yet it is possible to reduce the drama to an even barer state than we find in Ibsen's gloomy tragedy in prose. Ibsen's characters speak; they reveal themselves in speech; and it is by words that they carry on the story. A story can be presented on the stage, however, without the use of words, without the aid of the human voice, by the employment of gesture only, by pure pantomime. No doubt, the drama makes a great sacrifice when it decides to do without that potent instrument of emotional appeal, the human voice; and yet it can find its profit, now and then, in this self-imposed deprivation. Certain stories there are, not many, and all of them necessarily simplified and made very clear, which gain by being bereft of the spoken word and by being presented only in the pantomime. And these stories, simple as they must be, if they are to be apprehended by sight alone without the aid of sound, are, nevertheless, capable of supporting an actual play with all the absolutely necessary elements of a drama. In his interesting and illuminating volume on the 'Theory of the Theater,' Mr. Clayton Hamilton has a carefully considered definition of a play. He asserts that "a play is a story devised to be presented by actors on a stage before an audience." Perhaps it might be possible to amend this by saying "in a theater," instead of "on a stage," since we are now pretty certain that there was no stage in the Greek theater when Sophocles was writing for it. But this is but a trifling correction, and the definition as a whole is excellent. It includes every possible kind of dramatic entertainment, Greek tragedy and Roman comedy, medieval farce and modern melodrama, the music-drama of Wagner and the problem-play of Ibsen, the summer song-show and the college boy's burlesque. Obviously it includes the wordless play, the story devised to be presented on a stage and before an audience by actors who use gesture only and who do not speak. In forgoing the aid of words the drama is only reducing itself to its absolutely necessary elements--a story, and a story which can be shown in action. It is not quite true that the skeleton of a good play is always a pantomime, since there are plays the plot of which cannot be conveyed to the audience except by actual speech. Yet some of the greatest plays have plots so transparent that the story is clear, even if we fail to hear what the actors are saying. It has been asserted that if 'Hamlet,' for example, were to be performed in a deaf-and-dumb asylum, the inmates would be able to understand it and to enjoy it. They would be deprived of the wonderful beauty of Shakspere's verse, no doubt, and they would scarcely be able even to guess at the deeper significance of the philosophy which enriches the tragedy; but the story would unroll itself clearly before their eyes so that they could follow the succession of scenes with adequate understanding.