_Incongruity the essential Element._--If we are required now to specify in what consists the essential character of the ludicrous, and of wit which may be regarded as the exciting or producing cause of the same, we should detect it in _the grouping_, _or bringing together in a sudden and unexpected manner_, _ideas or things that are in their nature incongruous_. The _incongruity_ of the objects thus brought into juxtaposition, and the _surprise_ felt at the _novel_ and _unexpected_ relation thus discovered, are, it seems to me, the true essential elements in the idea of the ludicrous. If we examine closely the different objects that give rise to this emotion, we shall find, I think, always something incongruous, and consequently unusual and unexpected, in the relations presented, whether of ideas or of things. It may be the result of accident, or of awkwardness, or of mental obtuseness, or of design; it matters not in what mode or from what source the thing proceeds; whenever these conditions are answered, the sense of the ludicrous is awakened. _Relation of Surprise to the ludicrous._--Surprise is an essential concomitant of the ludicrous. This is the state of mind into which we are thrown by the occurrence of any thing new, strange, out of the usual course, and, therefore, unexpected. Whatever is incongruous, is likely to be unusual, and of course unexpected, and hence strikes the mind with more or less surprise. Not every thing that surprises us, however, is witty. The sudden fall of a window near which we are sitting, or the unexpected discharge of a musket within a few paces of us, may cause us to start with surprise, but would not strike us probably as particularly facetious. We are surprised to hear of the death of a friend, or of some fearful accident, attended with loss of life to many, but there is no mirthfulness in such surprise. It is only that form of surprise which is awakened by the perception of the incongruous, and not the surprise we feel in general at any thing new and strange, that is related to the ludicrous. It is rather a concomitant, therefore, than strictly an element of the emotion we are now considering.