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140
LAUGHTER
CHAP.

clear it up thoroughly, we should have to enter upon a rather novel line of investigation, to analyse the artificial sympathy which we bring with us to the theatre, and determine upon the circumstances in which we accept and those in which we refuse to share imaginary joys and sorrows. There is an art of lulling sensibility to sleep and providing it with dreams, as happens in the case of a mesmerised person. And there is also an art of throwing a wet blanket upon sympathy at the very moment it might arise, the result being that the situation, though a serious one, is not taken seriously. This latter art would appear to be governed by two methods, which are applied more or less unconsciously by the comic poet. The first consists in isolating, within the soul of the character, the feeling attributed to him, and making it a parasitic organism, so to speak, endowed with an independent existence. As a general rule, an intense feeling successively encroaches upon all other mental states and colours them with its own peculiar hue; if, then, we are made to witness this gradual impregnation, we finally become impregnated ourselves with a corresponding emotion. To