threat of dissolving partnership between the two coinciding series. Every moment the whole thing threatens to break down, but manages to get patched up again; it is this diversion that excites laughter, far more than the oscillation of the mind between two contradictory ideas. It makes us laugh because it reveals to us the reciprocal interference of two independent series, the real source of the comic effect.
And so the stage-made misunderstanding is nothing more than one particular instance, one means—perhaps the most artificial—of illustrating the reciprocal interference of series, but it is not the only one. Instead of two contemporary series, you might take one series of events belonging to the past and another belonging to the present: if the two series happen to coincide in our imagination, there will be no resulting cross-purposes, and yet the same comic effect will continue to take place. Think of Bonivard, captive in the Castle of Chillon: one series of facts. Now picture to yourself Tartarin, travelling in Switzerland, arrested and imprisoned: second series, independent of the former. Now let
